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Mass die-offs from human impact and planetary response to the assault could occur by early 2016

Posts Tagged ‘earthquake’

Ohio Finally Links Fracking to Earthquakes

Posted by feww on April 12, 2014

ENVIRONMENTAL HOLOCAUST
FRACKING-RELATED SEISMIC HAZARD
HEIGHTENED SEISMICITY IN OKLAHOMA
.

Earthquakes Continue to Rattle Oklahomans

The Ohio Department of Natural Resources (ODNR) has finally conceded that the hydraulic fracturing process (fracking), which involves injecting sand, water and chemicals at high pressure deep underground to help release oil and gas, may have produced earthquakes in Poland Township in March.

“Regarding the seismic events in Poland Township, ODNR geologists believe the sand and water injected into the well during the hydraulic fracturing process may have increased pressure on an unknown microfault in the area,” said ODNR in a statement release on Friday.

At least 161 earthquakes measuring magnitude 2.5 or greater, occurring  in and near the state, have rattled Oklahomans in the past 30 days.

OK quakes to April 12
Updated: 2014-04-12 07:59:47 UTC. 30 Days, Magnitude 2.5+ (161 earthquakes in map area). Source; USGS/EHP.

Magnitude 4.2+ Since March 30

At least 7 quakes measuring 4.0 or greater have struck Oklahoma in the past three weeks including 4 shocks measuring 4.2 or greater occurring since Mach 30.

  • M4.2 about 6km SSW of Langston, Oklahoma 2014-04-07 at 16:03:03 UTC at a  depth of 5.2 km
  • M4.2 about 6km SSW of Langston, Oklahoma 2014-04-06 at 14:58:54 UTC at a  depth of5.1 km
  • M4.3 about 20km N of Crescent, Oklahoma 2014-03-30 at 08:42:36 UTC at a  depth of 5.0 km
  • M4.3 about 21km N of Crescent, Oklahoma 2014-03-30 at 06:51:56 UTC at a  depth of 5.0 km

In Another Shallow Quake Strikes Oklahoma posted on April 6, 2014 the blog said: FIRE-EARTH Models show Oklahoma seismicity WILL continue intensifying

That post and all other FIRE-EARTH blog entries concerning disasters or ‘impending’ disasters in the U.S. continue to be heavily censored, blocked or buried by Google, WordPress and others.

FIRE-EARTH Earthquake Forecast

For the next FIRE-EARTH Earthquake Forecast see April 12 Bulletin, which would be released later today – members only.

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M7.1 EQ Strikes Near Panguna, PNG

Posted by feww on April 11, 2014

SEISMIC HAZARD
.

M7.1 quake strikes 57km SW of Panguna, Papua New Guinea

Centered at 6.625°S, 155.064°E, the quake struck at a depth of 50.0km (31.1mi) on Friday, April 11, 2014 at 07:07:21 UTC.

The mainshock was followed by at least four significant aftershocks measuring 4.8Mw or greater. The largest aftershock measured 6.5Mw and was centered at  6.855°S 155.017°E, occurring at a depth of 39.4km.

Tsunami Evaluation

The quakes did NOT produce a widespread destructive tsunami.

Latest Seismicity Around PRF

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‘This is the worst disaster the nation has seen’

Posted by feww on April 4, 2014

EXTREME WEATHER & CLIMATIC EVENTS
EXTREME RAIN EVENTS
DEADLY FLASH FLOODS
NATIONAL DISASTER
STATE OF EMERGENCY
.

Dozens Dead or Missing, Thousands Homeless in Solomons Flooding

Flash flooding has claimed at least 6 lives, left dozens missing and more than 10,000 homeless in the Solomon Islands’ capital Honiara (population: ∼ 70,000), prompting authorities to declare a state of emergency.

“This is the worst disaster the nation has seen,”  said the  Solomon Star newspaper.

Extreme Rain Events lasting for about a week  caused the main Matanikau River to burst its banks, sweeping away entire communities. The rain and flooding continue.

A spokesperson from the National Disaster Management Office said the office will assess the damage to map out the cost but said it will be costly.

“Homes were swept away by flash floods, lives were lost, properties damaged but the real extent of the damage is still sketchy,” the spokesman said.

“Matanikau River caused significant damage and there are other reports from other parts of Guadalcanal that were hard hit on Thursday.”

He said the Guadalcanal plains were also affected.

“Reports from those areas were that homes were flooded and food gardens wiped out.

“Lunga River also unleashed her might yesterday affecting a lot of residents in Lunga.”

The old one-lane Mataniko bridge is gone. On the Guadalcanal plains, hundreds of villagers headed for the hills last night as flooding took away  homes. This is the worst disaster the nation has seenSolomon Star News

Strong Quake Strike Solomon Islands

Meanwhile a magnitude 6Mw quake struck about 28km WSW of Kirakira, Solomon Islands.

Magnitude: 6.0Mw
Event Time: 2014-04-04 11:40:32 UTC
Location: 10.530°S 161.672°E
Depth: 63.8km (39.6mi)
Nearby Cities: 28km (17mi) WSW of Kirakira, Solomon Islands
224km (139mi) ESE of Honiara, Solomon Islands
Source: USGS/EHP

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Disaster Declared for Chile Quake Zone

Posted by feww on April 2, 2014

SEISMIC HAZARD
LARGE EARTHQUAKE ALONG PERU-CHILE TRENCH
DISASTER DECLARED FOR EQ ZONE
.

Chile declares disaster zones after major earthquake

Chilean President has declared parts of northern Chile disaster areas after a large earthquake measuring 8.2Mw struck offshore about 95km NW of Iquique.

The quake struck off the northern coast of Chile late Tuesday, triggering tsunami waves of up to 2.1m that hit the coastal areas.

There have been reports of large landslides, fires, power cuts and prison escapes. The landslides reportedly blocked highways, hampering mass evacuation efforts.

Quake-related deaths stood at five, with more than 80,000 people displaced as of posting,  reported the interior ministry.

President Bachelet said she would visit Arica and Tarapaca regions on Wednesday, and would dispatch the military  to the disaster areas to prevent looting and disorder.

Earthquake Details

Magnitude: 8.2Mw
Location: 19.642°S, 70.817°W
Depth: 20.1km (12.5mi)
Date/Time: 2014-04-01 at 23:46:46 UTC
Nearby Cities: 95km (59mi) NW of Iquique, Chile

Aftershocks

Dozens of aftershocks, including at least 27 significant shocks measuring up to 6.2Mw have struck the area as of posting.

Chile afters 2apr14
Earthquake Location Map. Source: USGS/EHP

Since march 16, hundreds of earthquakes have occurred along the Peru-Chile trench off the northern coast of Chile. A 6.7 magnitude quake struck the region on March 16, prompting the authorities to evacuate about 120,000 people in low-lying areas.

FIRE-EARTH Earthquake Forecast for Chile

On March 17, 2014, FIRE-EARTH posted an Earthquake Forecast for Chile, which was immediately hacked. The update was posted at Another Significant Aftershock Strikes Coastal Chile, on the same day, which stated:

FIRE-EARTH Models show a large earthquake could strike along Peru-Chile Trench in the coming weeks.

Tsunami Forecast: Large tsunami waves highly probable.

Forecast Details

  • Magnitude: ≥8.2Mw
  • Location: 23.6°S, 70.8ºW
  • Depth: 30km
  • Time: March 17 – April 29, 2014
  • Probability of Occurrence: 0.75
  • Total Earthquake Energy for the Episode ≥ 0.25EJ

Tsunami Warning/ Watch/ Advisory

A TSUNAMI ADVISORY CONTINUES IN EFFECT FOR THE STATE OF HAWAII, according to NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI.

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M8.2 Strikes Coast of Chile

Posted by feww on April 2, 2014

SEISMIC HAZARD
LARGE EARTHQUAKE ALONG PERU-CHILE TRENCH
TSUNAMI WARNING
MASS EVACUATIONS
.

Major Earthquake Hits Northern Chile Coastal Area Triggering a Tsunami

10 Significant aftershocks have struck the quake zone including magnitudes 5.7, 6.2, 5.8, 5.7, 5.6, 5.5, 5.4, 5.3, 4.7, 5.2, 4.8, as of posting.

FIRE-EARTH Forecast for the Total Earthquake Energy associated with this Episode ≥ 0.25EJ. See Another significant aftershock… posted on March 17, 2014.

Earthquake Details [USGS/EHP]

Magnitude: 8.2Mw
Location: 19.642°S, 70.817°W
Depth: 20.1km (12.5mi)
Date/Time: 2014-04-01 at 23:46:46 UTC

Nearby Cities:

  • 95km (59mi) NW of Iquique, Chile
  • 139km (86mi) SSW of Arica, Chile
  • 190km (118mi) SSW of Tacna, Peru
  • 228km (142mi) SSE of Ilo, Peru
  • 447km (278mi) SW of La Paz, Bolivia

m8-2 chile 2apr14
Large earthquake strikes Chile, April 1, 2014. Source: USGS/EHP

  • Tsunami waves are hitting Pisagua, Patache and Iquique, CHILE, as the  authorities evacuate coastal areas.
  • Multiple landslides have blocked several highways,  hampering mass evacuations along coastal areas.
  • The quake rattled buildings in Peru and Bolivian capital of La Paz, about 450km (278 miles) away.

Tsunami Warning/Watch

The first tsunami wave hit the coastal area within 45 minutes of the earthquake, said authorities. A tsunami warning has been issued for all of South and Central America’s Pacific coast.

The following bulletin was issued by the Pacific Tsunami Center.

PACIFIC TSUNAMI WARNING CENTER/NOAA/NWS
ISSUED AT 0131Z 02 APR 2014

THIS BULLETIN IS ISSUED AS ADVICE TO GOVERNMENT AGENCIES. ONLY
NATIONAL AND LOCAL GOVERNMENT AGENCIES HAVE THE AUTHORITY TO MAKE
DECISIONS REGARDING THE OFFICIAL STATE OF ALERT IN THEIR AREA AND
ANY ACTIONS TO BE TAKEN IN RESPONSE.

AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS

ORIGIN TIME – 2347Z 01 APR 2014
COORDINATES – 19.8 SOUTH 70.8 WEST
DEPTH – 10 KM
LOCATION – NEAR THE COAST OF NORTHERN CHILE
MAGNITUDE – 8.2

MEASUREMENTS OR REPORTS OF TSUNAMI WAVE ACTIVITY

GAUGE LOCATION LAT LON TIME AMPL PER
——————- —– —— —– ————— —–
MEJILLONES CL 23.1S 70.5W 0103Z 0.86M / 2.8FT 32MIN
MATARANI PE 17.0S 72.1W 0108Z 0.56M / 1.8FT 10MIN
TOCOPILLA CL 22.1S 70.2W 0109Z 0.42M / 1.4FT 10MIN
PISAGUA CL 19.6S 70.2W 0055Z 1.96M / 6.4FT 12MIN
ARICA CL 18.5S 70.3W 0021Z 0.98M / 3.2FT 36MIN
ANTOFAGASTA CL 23.7S 70.4W 0034Z 0.25M / 0.8FT 18MIN
PATACHE CL 20.8S 70.2W 0015Z 1.51M / 5.0FT 10MIN
IQUIQUE CL 20.2S 70.1W 0005Z 2.11M / 6.9FT 12MIN

LAT – LATITUDE (N-NORTH, S-SOUTH)
LON – LONGITUDE (E-EAST, W-WEST)
TIME – TIME OF THE MEASUREMENT (Z IS UTC IS GREENWICH TIME)
AMPL – TSUNAMI AMPLITUDE MEASURED RELATIVE TO NORMAL SEA LEVEL.
IT IS …NOT… CREST-TO-TROUGH WAVE HEIGHT.
VALUES ARE GIVEN IN BOTH METERS(M) AND FEET(FT).
PER – PERIOD OF TIME IN MINUTES(MIN) FROM ONE WAVE TO THE NEXT.

NOTE – DART MEASUREMENTS ARE FROM THE DEEP OCEAN AND THEY
ARE GENERALLY MUCH SMALLER THAN WOULD BE COASTAL
MEASUREMENTS AT SIMILAR LOCATIONS.

EVALUATION

SEA LEVEL READINGS INDICATE A TSUNAMI WAS GENERATED. IT MAY HAVE
BEEN DESTRUCTIVE ALONG COASTS NEAR THE EARTHQUAKE EPICENTER AND
COULD ALSO BE A THREAT TO MORE DISTANT COASTS. AUTHORITIES SHOULD
TAKE APPROPRIATE ACTION IN RESPONSE TO THIS POSSIBILITY. THIS
CENTER WILL CONTINUE TO MONITOR SEA LEVEL DATA TO DETERMINE THE
EXTENT AND SEVERITY OF THE THREAT.

FOR ALL AREAS – WHEN NO MAJOR WAVES ARE OBSERVED FOR TWO HOURS
AFTER THE ESTIMATED TIME OF ARRIVAL OR DAMAGING WAVES HAVE NOT
OCCURRED FOR AT LEAST TWO HOURS THEN LOCAL AUTHORITIES CAN ASSUME
THE THREAT IS PASSED. DANGER TO BOATS AND COASTAL STRUCTURES CAN
CONTINUE FOR SEVERAL HOURS DUE TO RAPID CURRENTS. AS LOCAL
CONDITIONS CAN CAUSE A WIDE VARIATION IN TSUNAMI WAVE ACTION THE
ALL CLEAR DETERMINATION MUST BE MADE BY LOCAL AUTHORITIES.

ESTIMATED INITIAL TSUNAMI WAVE ARRIVAL TIMES AT FORECAST POINTS
WITHIN THE WARNING AND WATCH AREAS ARE GIVEN BELOW. ACTUAL
ARRIVAL TIMES MAY DIFFER AND THE INITIAL WAVE MAY NOT BE THE
LARGEST. A TSUNAMI IS A SERIES OF WAVES AND THE TIME BETWEEN
SUCCESSIVE WAVES CAN BE FIVE MINUTES TO ONE HOUR.

LOCATION FORECAST POINT COORDINATES ARRIVAL TIME
——————————– ———— ————
CHILE IQUIQUE 20.2S 289.9E 0002Z 02 APR
ARICA 18.5S 289.7E 0011Z 02 APR
ANTOFAGASTA 23.3S 289.6E 0017Z 02 APR
CALDERA 27.1S 289.2E 0046Z 02 APR
COQUIMBO 29.9S 288.6E 0111Z 02 APR
VALPARAISO 33.0S 288.4E 0135Z 02 APR
TALCAHUANO 36.7S 286.9E 0219Z 02 APR
CORRAL 39.8S 286.5E 0251Z 02 APR
GOLFO_DE_PENAS 47.1S 285.1E 0403Z 02 APR
EASTER_ISLAND 27.1S 250.6E 0532Z 02 APR
PUERTO_MONTT 41.5S 287.0E 0546Z 02 APR
PERU MOLLENDO 17.1S 288.0E 0021Z 02 APR
SAN_JUAN 15.3S 284.8E 0039Z 02 APR
LA_PUNTA 12.1S 282.8E 0131Z 02 APR
TALARA 4.6S 278.5E 0218Z 02 APR
CHIMBOTE 9.0S 281.2E 0225Z 02 APR
PIMENTAL 6.9S 280.0E 0250Z 02 APR
ECUADOR LA_LIBERTAD 2.2S 278.8E 0239Z 02 APR
ESMERELDAS 1.2N 280.2E 0327Z 02 APR
BALTRA_ISLAND 0.5S 269.7E 0429Z 02 APR
COLOMBIA TUMACO 1.8N 281.1E 0346Z 02 APR
BAHIA_SOLANO 6.3N 282.6E 0417Z 02 APR
BUENAVENTURA 3.8N 282.8E 0433Z 02 APR
PANAMA PUERTO_PINA 7.4N 282.0E 0427Z 02 APR
PUNTA_MALA 7.5N 280.0E 0429Z 02 APR
PUNTA_BURICA 8.0N 277.1E 0441Z 02 APR
BALBOA_HEIGHTS 9.0N 280.4E 0645Z 02 APR
COSTA RICA CABO_MATAPALO 8.4N 276.7E 0441Z 02 APR
PUERTO_QUEPOS 9.4N 275.8E 0514Z 02 APR
CABO_SAN_ELENA 10.9N 274.0E 0531Z 02 APR
NICARAGUA SAN_JUAN_DL_SUR 11.2N 274.1E 0557Z 02 APR
PUERTO_SANDINO 12.2N 273.2E 0609Z 02 APR
CORINTO 12.5N 272.8E 0609Z 02 APR
EL SALVADOR ACAJUTLA 13.6N 270.2E 0628Z 02 APR
GUATEMALA SIPICATE 13.9N 268.8E 0642Z 02 APR
MEXICO PUERTO_MADERO 14.8N 267.5E 0649Z 02 APR
ACAPULCO 16.9N 260.1E 0711Z 02 APR
SALINA_CRUZ 16.5N 264.8E 0713Z 02 APR
HONDURAS AMAPALA 13.2N 272.4E 0655Z 02 APR

BULLETINS WILL BE ISSUED HOURLY OR SOONER IF CONDITIONS WARRANT.
THE TSUNAMI WARNING AND WATCH WILL REMAIN IN EFFECT UNTIL
FURTHER NOTICE.

THE U.S. NATIONAL TSUNAMI WARNING CENTER WILL ISSUE PRODUCTS
FOR ALASKA…BRITISH COLUMBIA…WASHINGTON…OREGON…CALIFORNIA.

See also:

FIRE-EARTH Earthquake Forecast for Chile (March 17, 2014) and the update posted at Another Significant Aftershock Strikes Coastal Chile.

FIRE-EARTH Models show a large earthquake could strike along Peru-Chile Trench in the coming weeks.

Tsunami Forecast: Large tsunami waves highly probable.

Forecast Details

  • Magnitude: ≥8.2Mw
  • Location: 23.6°S, 70.8ºW
  • Depth: 30km
  • Time: March 17 – April 29, 2014
  • Probability of Occurrence: 0.75
  • Total Earthquake Energy for the Episode ≥ 0.25EJ

Related Links

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More than Two Dozen Quakes Strike YNP

Posted by feww on March 31, 2014

SEISMIC HAZARD
.

Swarm of earthquakes rattle Yellowstone National Park, Wyoming

The quakes included a magnitude 4.8Mw shock, the largest shock at Yellowstone since February 22, 1980, according to Yellowstone Volcano Observatory (YVO).

The swarm, which began striking the area on March 27, also included a magnitude 3.1Mw event.

The seismicity occurred in an area of uplift that has been elevated for about 7 months, said YVO.

Elevated seismicity was also observed in the same region during a previous period of uplift between 1996 and 2003.

YVO says there is no indication of other geologic activity, i.e., a volcanic eruption, except for the continuing seismicity (!)

Hawaii Earthquake

Meanwhile, a shallow 3.0Mw earthquake struck about 62km west of Kalaoa, Hawaii.

The quake, centered at 19.825°N 156.570°W, struck at a depth of 5.6km and was timed at 02:08:02 UTC on Monday, March 31, 2014, said USGS/EHP.

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Significant Quakes Strike Oklahoma, Wyoming

Posted by feww on March 30, 2014

SEISMIC HAZARD
.

Swarms of significant quakes rattle Oklahoma

A large cluster of earthquakes including more than a dozen shocks measuring 2.7Mw to 4.4Mw struck Oklahoma between 03:08UTC and 14:09 UTC on March 30, 2014.

The most significant quakes in the cluster so far include three shocks measuring 4.3 and 4.4Mw.

  • Magnitude 4.4, 20km NNW of Crescent, Oklahoma at 14:09:59 UTC  2014-03-30,   36.129°N 97.647°W, Depth= 4.7km
  • M 4.3,  20km N of Crescent, Oklahoma at  08:42:36 UTC 2014-03-30, 36.140°N 97.616°W, Depth=5.0km
  • M 4.3, 21km N of Crescent, Oklahoma at 06:51:56 UTC 2014-03-30, 36.142°N 97.592°W, Depth=5.0km

Oklahoma quakes 30march14
Oklahoma Earthquake Location Map. Source: USGS/EHP

Since March 2, 2014 at least 112 earthquakes measuring 2.5Mw to 4.4Mw  have struck the state of Oklahoma.

M4.8 Strikes 37km ENE of West Yellowstone, Montana

A swarm of earthquakes including a magnitude 4.8Mw shock struck the Yellowstone national park about 37km ENE of West Yellowstone, Montana earlier today.

Earthquake Details

Magnitude: 4.8Mw
Event Time: 2014-03-30 12:34:39 UTC
Location: 44.778°N 110.683°W depth=6.8km (4.2mi)
Nearby Cities:

  • 37km (23mi) ENE of West Yellowstone, Montana

Earthquake Location Map

YNP quakes 30mar2014
Source: USGS/EHP

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M4.1 Quake Strike Near Los Angeles

Posted by feww on March 30, 2014

SEISMIC HAZARD
.

Magnitude 4.1Mw earthquake strikes near Rowland Heights, California

 Centered at 33.961°N, 117.892°W the quake struck at a depth of about 9.4km, according to USGS/EHP.

The latest temblor  was the 14th quake measuring 2.5Mw or greater to strike the area since a magnitude 5.1 quake on Friday caused scattered damage around the LA area.

54 people Displaced

The Friday quake left at least 54 people displaced in Fullerton, about 8km south of the epicenter, due to damage to their homes, authorities said.

“The quake also shook items off tables, rattled chandeliers and resulted in scattered damage to cars and property, including setting off a rockslide in the Orange County city of Brea that flipped a car on its roof,” Reuters reported.

A swarm of at least 140 smaller aftershocks have rattled the area since Friday.

Earthquake Details

Magnitude
: 4.1Mw
Event Time:2014-03-29 21:32:45 UTC
Location: 33.961°N, 117.892°W
Depth: 9.4km (5.9mi)
Nearby Cities:

  • 2km (1mi) SE of Rowland Heights, California
  • 5km (3mi) NNE of Brea, California
  • 5km (3mi) SSE of South San Jose Hills, California
  • 6km (4mi) ENE of La Habra, California

Earthquake Location Map

m4-1 la habra heights
Earthquake Location Map. Source: USGS/EHP

Details of other Shocks Measuring ≥ 2.5Mw

3.4 2km S of La Habra, California 2014-03-30 at 17:02:06 UTC, depth of 1.3 km
2.5 4km SSW of La Habra, California 2014-03-29 at 14:48:12, depth of 0.2 km
2.5 1km NNW of Brea, California 2014-03-29 at 12:04:27,  depth of 0.1 km
2.8 2km S of La Habra, California 2014-03-29 at 10:31:51, depth of 0.9 km
2.6 2km SSW of La Habra, California 2014-03-29 at 09:49:40, depth of 0.3 km
3.1 0km NNE of Brea, California 2014-03-29 at 05:37:14, depth of 3.6 km

2.6 2km NNW of Brea, California 2014-03-29 05:05:31 UTC, depth= 2.4 km
2.7 1km E of La Habra, California 2014-03-29 05:05:31 UTC, depth=0.7 km
2.7 2km NNW of Brea, California 2014-03-29 04:53:57 UTC, depth= 1.3 km
2.9 2km NNW of Brea, California 2014-03-29 04:47:13 UTC, depth= 5.3 km
2.7 2km N of Brea, California 2014-03-29 04:45:37 UTC, depth= 1.3 km
3.6 2km SE of La Habra, California 2014-03-29 04:30:51 UTC, depth= 0.1 km
3.4 2km ESE of La Habra, California 2014-03-29 04:11:53 UTC, depth= 0.1 km

FIRE-EARTH Earthquake Forecasts for California

Due to the reasons explained previously on this blog, FIRE-EARTH Science Team has suspended its research on California seismicity.

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M5.1 Quake Strike Near Los Angeles

Posted by feww on March 29, 2014

SEISMIC HAZARD
.

Magnitude 5.1Mw earthquake strikes 1km S of La Habra, California

The quake was preceded by a magnitude 3.6Mw foreshock which occurred about an hour earlier, and was followed by at least 8 aftershocks as of posting.

Earthquake Details

Magnitude
: 5.1Mw
Event Time:04:09:42 UTC 2014-03-29
Location: 33.919°N 117.944°W depth=7.5km (4.6mi)
Nearby Cities

  • 1km (1mi) S of La Habra, California
  • 4km (2mi) W of Brea, California
  • 5km (3mi) NNW of Fullerton, California
  • 6km (4mi) E of La Mirada, California
  • 30km E of downtown Los Angeles

Earthquake Location Map

Calif quake 29mar14
Earthquake Location Map. Source: USGS/EHP

Details of Foreshock

M 3.6 – 1km ESE of La Habra, California
Time: 2014-03-29 03:03:39 UTC
Location: 33.923°N 117.929°W
Depth: 6.8km

Details of Aftershocks

3.1 2km NE of Brea, California 2014-03-29 05:37:14 UTC, depth= 1.1 km
2.6 2km NNW of Brea, California 2014-03-29 05:05:31 UTC, depth= 2.4 km
2.7 1km E of La Habra, California 2014-03-29 05:05:31 UTC, depth=0.7 km
2.7 2km NNW of Brea, California 2014-03-29 04:53:57 UTC, depth= 1.3 km
2.9 2km NNW of Brea, California 2014-03-29 04:47:13 UTC, depth= 5.3 km
2.7 2km N of Brea, California 2014-03-29 04:45:37 UTC, depth= 1.3 km
3.6 2km SE of La Habra, California 2014-03-29 04:30:51 UTC, depth= 0.1 km
3.4 2km ESE of La Habra, California 2014-03-29 04:11:53 UTC, depth= 0.1 km

FIRE-EARTH Earthquake Forecasts for California

Due to the reasons explained previously on this blog, FIRE-EARTH Science Team has suspended its research on California seismicity.

Related Links

 

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M6.5 Strikes South of the Fiji Islands

Posted by feww on March 26, 2014

15 M7.5+ earthquakes recorded near New Zealand since 1900

Earthquake Details

Magnitude: 6.5Mw
Event Time: 2014-03-26 03:29:36 UTC
Location: 26.092°S 179.279°E depth=493.1km (306.4mi)
Nearby Cities:

  • 448km (278mi) NW of Raoul Island, New Zealand
  • 786km (488mi) SW of Nuku`alofa, Tonga
  • 884km (549mi) S of Suva, Fiji

Seismotectonics of the Eastern Margin of the Australia Plate

Excerpts from the Tectonic Summary [sourced from USGS]

Since 1900 there have been 15 M7.5+ earthquakes recorded near New Zealand. Nine of these, and the four largest, occurred along or near the Macquarie Ridge, including the 1989 M8.2 event on the ridge itself, and the 2004 M8.1 event 200 km to the west of the plate boundary, reflecting intraplate deformation. The largest recorded earthquake in New Zealand itself was the 1931 M7.8 Hawke’s Bay earthquake, which killed 256 people.

Large earthquakes are common along the North New Hebrides trench and have mechanisms associated with subduction tectonics, though occasional strike slip earthquakes occur near the subduction of the D’Entrecasteaux ridge. Within the subduction zone 34 M7.5+ earthquakes have been recorded since 1900. On October 7, 2009, a large interplate thrust fault earthquake (M7.6) in the northern North New Hebrides subduction zone was followed 15 minutes later by an even larger interplate event (M7.8) 60 km to the north. It is likely that the first event triggered the second of the so-called earthquake “doublet”.

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M6.5 Quake Strikes Andaman Sea near Nicobar Islands

Posted by feww on March 21, 2014

SEISMIC HAZARD
.

Strong Quake, Significant Aftershocks Occur E of Mohean, Nicobar Islands

Centered at 7.769°N, 94.325°, the quake struck at a depth of about 10km on Friday 21, 2014 at 13:41:07 UTC, according to the USGS/EHP.

At least 8 significant aftershocks followed, as of posting.

andaman sea quakes 21-3-14
Explanation Map for Seismotectonics of the Sumatra Region (Partial). Source: USGS

Earthquake Details  – [USGS/EHP]

Magnitude: 6.5Mw
Event Time: 2014-03-21 13:41:07 UTC
Location: 7.769°N 94.325°E depth=10.0km (6.2mi)
Nearby Cities:

  • 113km (70mi) E of Mohean, India
  • 234km (145mi) NNW of Sabang, Indonesia

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Another Significant Aftershock Strikes Coastal Chile

Posted by feww on March 17, 2014

MAJOR EARTHQUAKE WARNING
.

M6.2 aftershock strikes near Iquique, Chile

The event registered as a 6.2Mw shock occurring 80km WNW of Iquique, coastal Chile.

Earthquake Details

  • Magnitude: 6.2Mw [USGS/EHP]
  • Epicenter: 20.003°S 70.874°W depth=17.0km (10.6mi)
  • Event Time: 2014-03-17 05:11:34 UTC
  • Distances: 80km (50mi) WNW of Iquique, Chile

Tsunami Status

No Tsunami Warnings, Advisories or Watches are in effect.

Earthquake Location Map

chile 6-2 AFSH- 17 Mar14

List of the latest Events Occurring in the Peru-Chile Trench

  • 5.0Mw 82km WNW of Iquique, Chile 2014-03-17  05:19:34UTC  Depth 12.0 km
  • 6.2Mw 80km WNW of Iquique, Chile 2014-03-17  05:11:34UTC  Depth 17.0 km
  • 4.8Mw 18km W of Tacna, Peru 2014-03-17 04:14:51UTC  Depth 94.5 km
  • 4.6Mw 65km WNW of Iquique, Chile 2014-03-17 03:28:21UTC  Depth 10.0 km
  • 4.6Mw 88km WNW of Iquique, Chile 2014-03-17 02:05:58UTC  Depth 23.6 km
  • 5.2Mw 70km WNW of Iquique, Chile 2014-03-17 01:34:55UTC Depth 10.0 km
  • 4.9Mw 65km WNW of Iquique, Chile 2014-03-17 00:55:03UTC  Depth 10.0 km
  • 5.1Mw 55km WNW of Iquique, Chile 2014-03-17 00:12:09UTC  Depth 10.0 km
  • 4.9Mw 61km W of Iquique, Chile 2014-03-16 23:08:11UTC  Depth 10.0 km
  • 4.9Mw 68km SE of Arica, Chile 2014-03-16 22:54:09UTC  Depth 11.9 km
  • 4.9Mw 84km WNW of Iquique, Chile 2014-03-16 21:29:35UTC  Depth 10.9 km
  • 5.1Mw 36km NNW of Iquique, Chile 2014-03-16 21:26:27UTC Depth 35.0 km
  • 6.7Mw 60km WNW of Iquique, Chile 2014-03-16 21:16:30UTC  Depth 20.0 km

FIRE-EARTH Earthquake Forecast for Chile

FIRE-EARTH Models show a large earthquake could strike along Peru-Chile Trench in the coming weeks.

Tsunami Forecast: Large tsunami waves highly probable.

(NOTE: This post was hacked. Correct information reinstated on March 22, 2013)

Forecast Details

  • Magnitude: ≥8.2Mw
  • Location: 23.6°S, 70.8ºW
  • Depth: 30km
  • Time: March 17 – April 29, 2014
  • Probability of Occurrence: 0.75
  • Total Earthquake Energy for the Episode ≥ 0.25EJ

Related Links

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Strong Quake Strikes Coastal Northern Chile

Posted by feww on March 17, 2014

SEISMIC HAZARD
.

M6.7  quake strikes offshore  near Iquique, Chile

Centered at 19.925°S, 70.628°W the strong quake struck at a depth of about 20.0km (12.4mi) on March 16, 2014 at a depth of about 20km, according to USGS/EHP.

The event, followed by at least 7 significant aftershocks, confirmed ongoing intense seismicity at the Peru-Chile Trench.

Tsunami Status

No Tsunami Warnings, Advisories or Watches are in effect.

Chile’s National Office of Emergency of the Interior Ministry (ONEMI) confirmed a 32cm local tsunami.

Earthquake Details

Magnitude: 6.7Mw (downgraded from 7.0)
Location:19.925°S 70.628°W
Depth:20.0km
Time: 21:16:30UTC on 2014-03-16

Earthquake Location Map

chile quake 16mar14
Chile quake and aftershocks as of 02:03UTC, Monday 17,March 2014. Map: USGS/EHP

Related Links

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Intense Seismicity Along Peru-Chile Trench

Posted by feww on March 16, 2014

SEISMIC HAZARD
.

Intense Seismicity Along Peru-Chile Trench

The events include (Magnitude ≥5.4Mw)

  • M6.3 – 6km W of Sechura, Peru; 5.566°S, 80.879°W depth=9.8km (6.1mi), at 2014-03-15 23:51:30 UTC
  • M6.1 – 27km SSW of Paracas, Peru; 14.107°S 76.324°W depth=15.0km (9.3mi), at 2014-03-15 08:59:20 UTC
  • M5.6 – 53km WSW of Tumaco, Colombia;  1.645°N, 79.274°W depth=11.8km (7.3mi), at 2014-03-09 20:29:54 UTC
  • M5.4 – 35km WSW of Santa Cruz, Chile; 34.726°S, 71.740°W depth=44.8km (27.8mi), at 2014-03-15 14:46:27 UTC

peru-chile trench
Earthquake Location map. 7 Days, Magnitude 4.5+ East Pacific partial map. Updated: 2014-03-16 02:29UTC. Source: USGS/EHP

global seismicity
Earthquake Location map. 7 Days, Magnitude 4.5+ Worldwide. Updated: 2014-03-16 02:39UTC. Source: USGS/EHP

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M6.1 Quake Strikes Japan

Posted by feww on March 13, 2014

Strong Quake Strikes Iyo-nada, Japan

The quake struck at a depth of 80km rattling the entire southern tip of Japan, according to JMA.

NO Tsunami Warning or Advisories are in effect: JMA

Sendai, Ikata and Genkai Nuclear Power Plants

The quake which occurred less than three days after the third anniversary of the triple meltdown at the Fukushima nuclear station, also coincided with the announcement by Japan’s Nuclear Regulation Authority (NRA) that two reactors operated by Kyushu Electric Power Co have been placed on a list for priority screening at a meeting of officials reviewing restart applications.

The quake occurred about 250km NE of Kyushu Electric’s Sendai Nuclear Power Plant (31.83°N 130.19°E), less than 57km NW of Ikata Nuclear Power Plant (three reactors) located in Ehime Prefecture, and about 180km east of Genkai Nuclear Power Plant (4 reactors) in Saga Pref.

WE consider both the timing and location of this powerful seismic warning as perfect!

Japanese authorities should base any and all of their nuclear planning on one factor alone: There’ll be NO more warning before the big ones…

japan quake locmap 14mar2014 - Sendai NPP
Earthquake Location Map with the location of Sendai Nuclear Power Plant marked by FIRE-EARTH.  (Map sourced from USGS)

JPNUKE facilities en
Japan’s Nuclear Facilities. Copyright © Nuclear Regulation Authority (NRA, Japan). All Rights Reserved.

20140314021224493-140207 -regional

Magnitude: 6.1Mw (6.3Mw by USGS/EHP)
Time and Date: 02:07 JST  (UTC + 9:00 hrs) on 14 Mar 2014
Epicenter: 33.7°N, 131.9°E (33.683°N, 131.737°E -USGS)
Depth: 80 km  (82.9km -USGS)
Region: Iyo-nada (The Seto Inland Sea)
Source: Japan Meteorological Agency (JMA)

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Another Swarm of Shallow Quakes Strikes Close to Oklahoma City

Posted by feww on February 18, 2014

Earthquake Hazard
.

It Doesn’t Look Good!

At least 16 more shallow quakes measuring between M2.7 and M3.8 (possibly as large as 4.3Mw) struck Oklahoma February 15 – 17.

The latest cluster, one of several to strike Oklahoma since late last year,  occurred yet closer to Oklahoma City.

The swarm  raises the total number of shocks that have occurred in the Sooner State to 41 in the past 30 days, according to USGS/EHP.

OK EQs 18feb14
Earthquake Location Map. Oklahoma Earthquakes since February 15, 2014. Source: USGS/EHP

Details of the Most Significant Quake in the Past 24 Hours

  • Magnitude: 3.8Mw
  • Event Time:  04:54:59 UTC on 2014-02-17
  • Location: 35.785°N 97.471°W depth=4.8km (3.0mi)
  • Nearby Cities:
    • 11km (7mi) SSW of Guthrie, Oklahoma
    • 35km (22mi) N of Oklahoma City, Oklahoma

Tectonic Summary

Earthquakes in the Stable Continental Region – Natural Occurring Earthquake Activity
[Excerpts from USGS/EHP]

Most of North America east of the Rocky Mountains has infrequent earthquakes. Here and there earthquakes are more numerous, for example in the New Madrid seismic zone centered on southeastern Missouri, in the Charlevoix-Kamouraska seismic zone of eastern Quebec, in New England, in the New York – Philadelphia – Wilmington urban corridor, and elsewhere. However, most of the enormous region from the Rockies to the Atlantic can go years without an earthquake large enough to be felt, and several U.S. states have never reported a damaging earthquake.

Induced Seismicity

As is the case elsewhere in the world, there is evidence that some central and eastern North America earthquakes have been triggered or caused by human activities that have altered the stress conditions in earth’s crust sufficiently to induce faulting. Activities that have induced felt earthquakes in some geologic environments have included impoundment of water behind dams, injection of fluid into the earth’s crust, extraction of fluid or gas, and removal of rock in mining or quarrying operations. In much of eastern and central North America, the number of earthquakes suspected of having been induced is much smaller than the number of natural earthquakes, but in some regions, such as the south-central states of the U.S., a significant majority of recent earthquakes are thought by many seismologists to have been human-induced. Even within areas with many human-induced earthquakes, however, the activity that seems to induce seismicity at one location may be taking place at many other locations without inducing felt earthquakes. In addition, regions with frequent induced earthquakes may also be subject to damaging earthquakes that would have occurred independently of human activity. Making a strong scientific case for a causative link between a particular human activity and a particular sequence of earthquakes typically involves special studies devoted specifically to the question. Such investigations usually address the process by which the suspected triggering activity might have significantly altered stresses in the bedrock at the earthquake source, and they commonly address the ways in which the characteristics of the suspected human-triggered earthquakes differ from the characteristics of natural earthquakes in the region.

Related Links

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More Quakes Strike Oklahoma

Posted by feww on February 11, 2014

Earthquake Hazard
.

Significant Quakes Continue to Strike Oklahoma

At least 10 shallow quakes measuring up to 4.1Mw have occurred in Oklahoma February 5 – 11, 2014.

The quakes have occurred at shallow depths of 3.6 – 5.2km. At least 27 earthquakes have occurred in the state of Oklahoma over the past 30 days.

OK quakes 11feb2014
Earthquake location map. Source: USGS/EHP.

Details of the Most Significant Quake in 30 Days

  • Magnitude: 4.1Mw
  • Event Time: 2014-02-09 02:16:01 UTC
  • Location;: 35.876°N, 97.261°W depth=4.8km (3.0mi)
  • Nearby Cities:
    • 7km (4mi) S of Langston, Oklahoma
    • 50km (31mi) NNE of Oklahoma City

Tectonic Summary

Earthquakes in the Stable Continental Region – Natural Occurring Earthquake Activity
[Excerpts from USGS/EHP]

Most of North America east of the Rocky Mountains has infrequent earthquakes. Here and there earthquakes are more numerous, for example in the New Madrid seismic zone centered on southeastern Missouri, in the Charlevoix-Kamouraska seismic zone of eastern Quebec, in New England, in the New York – Philadelphia – Wilmington urban corridor, and elsewhere. However, most of the enormous region from the Rockies to the Atlantic can go years without an earthquake large enough to be felt, and several U.S. states have never reported a damaging earthquake.

Induced Seismicity

As is the case elsewhere in the world, there is evidence that some central and eastern North America earthquakes have been triggered or caused by human activities that have altered the stress conditions in earth’s crust sufficiently to induce faulting. Activities that have induced felt earthquakes in some geologic environments have included impoundment of water behind dams, injection of fluid into the earth’s crust, extraction of fluid or gas, and removal of rock in mining or quarrying operations. In much of eastern and central North America, the number of earthquakes suspected of having been induced is much smaller than the number of natural earthquakes, but in some regions, such as the south-central states of the U.S., a significant majority of recent earthquakes are thought by many seismologists to have been human-induced. Even within areas with many human-induced earthquakes, however, the activity that seems to induce seismicity at one location may be taking place at many other locations without inducing felt earthquakes. In addition, regions with frequent induced earthquakes may also be subject to damaging earthquakes that would have occurred independently of human activity. Making a strong scientific case for a causative link between a particular human activity and a particular sequence of earthquakes typically involves special studies devoted specifically to the question. Such investigations usually address the process by which the suspected triggering activity might have significantly altered stresses in the bedrock at the earthquake source, and they commonly address the ways in which the characteristics of the suspected human-triggered earthquakes differ from the characteristics of natural earthquakes in the region.

Related Links

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Earthquakes – Feb. 3, 2014

Posted by feww on February 3, 2014

SEISMIC HAZARD
.

Significant Quakes strike a dozen countries

Greece
M6.1 – 12km NW of Lixourion, Greece 2014-02-03 03:08:46 UTC
Location: 38.292°N, 20.337°E depth=13.7km (8.5mi)
Distances: 298km (185mi) W of Athens, Greece

Romania
M4.1 – 18km ESE of Comandau, Romania 2014-02-03 00:26:31 UTC
Location: 45.674°N, 26.471°E depth=135.0km (83.9mi)
140km (87mi) NNE of Bucharest, Romania

United States
M3.9 – 18km NW of Caldwell, Kansas 2014-02-03 09:03:21 UTC
Location: 37.128°N, 97.772°W depth=5.0km (3.1mi)
185km (115mi) N of Oklahoma City, Oklahoma

sig quakes 3feb14
Earthquake Location Map, logged at 14:24:34 UTC on 2014-02-03 . Source: USGS/EHP

Iran
M5.3 – 89km SE of Minab, Iran 2014-02-02 14:26:47 UTC
Location: 26.579°N, 57.717°E depth=25.0km (15.5mi)
340km (211mi) NNW of Muscat, Oman

Burma
M5.1 – 53km WNW of Mawlaik, Burma 2014-01-29 13:46:50 UTC
23.862°N 93.949°E depth=59.1km (36.7mi)
59km (37mi) SSE of Churachandpur, India

India
M5.2 – 260km ENE of Port Blair, India 2014-02-02 23:44:01 UTC
12.285°N 95.061°E depth=34.6km (21.5mi)
385km (239mi) W of Myeik, Burma

Indonesia
M5.1 – 119km ENE of Dofa, Indonesia 2014-02-02 02:59:24 UTC
1.311°S 126.317°E depth=45.7km (28.4mi)
259km (161mi) SSW of Kota Ternate, Indonesia

Philippines
M5.2 – 168km W of Sabtang, Philippines 2014-02-02 18:51:09 UTC
20.239°N 120.262°E depth=10.0km (6.2mi)
201km (125mi) SSW of Hengchun, Taiwan

PNG
M5.5 – 95km SE of Taron, Papua New Guinea 2014-02-03 04:25:59 UTC
4.947°S 153.752°E depth=93.8km (58.3mi)
177km (110mi) ESE of Kokopo, Papua New Guinea

New Zealand
M6.5 – 192km SSE of L’Esperance Rock, New Zealand 2014-02-02 09:26:37
32.908°S, 177.822°W depth=40.4km (25.1mi)
1,138km (707mi) NE of Wellington, New Zealand

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Severe Quake Rattles Lower North Island, NZ

Posted by feww on January 20, 2014

EARTHQUAKE HAZARD
.

M6.2  strikes near Palmerston North, New Zealand

The quake was felt thoroughout New Zealand’s North Island, from Invercargill to Auckland, and as far south as Canterbury in the South Island, according to local reports.

The mainshock was followed by a swarm of aftershocks, with the largest measuring 3.7Mw, as of posting.

The quakes have caused damage to buildings and roads in the lower North Island between Wellington and Manawatu, said reports.

The quake was felt widely in the capital Wellington, leaving “people screaming and ducking for cover as items fell from shelves,” in a shopping mall, said a report.

The shock knocked power to thousands of customers  in Tararua, Manawatu and Taranaki, according to the local power company.

NZ 20jan2014
Earthquake Location Map. Source: USGS/EHP

Earthquake Details [USGS/EHP]

  • Event Time: 2014-01-20 @ 02:52:45 UTC
  • Location: 40.634°S 175.776°E depth=28.0km (17.4mi)
  • Nearby Cities
    • 34km (21mi) SSE of Palmerston North, New Zealand
    • 37km (23mi) NNE of Masterton, New Zealand
    • 42km (26mi) E of Levin, New Zealand
    • 71km (44mi) ENE of Paraparaumu, New Zealand
    • 111km (69mi) NE of Wellington, New Zealand

Tectonic Summary

The January 20, 2014 M6.2 earthquake northeast of Masterton in the North Island of New Zealand is located approximately 115 km northeast of Wellington. The earthquake resulted from northeast-southwest oriented normal faulting 175 km to the west of the Hikurangi Trench, where the Pacific plate subducts westward beneath the North Island. At the latitude of this event, the Pacific plate moves towards the west-southwest with respect to the Australia plate at a rate of approximately 42 mm/yr. The faulting character, location and depth of this earthquake indicate it is an intraplate event either within Australia plate crust above the subducting Pacific plate, or within the interior of subducted Pacific slab, rather than a plate boundary event on the subduction zone thrust interface.

New Zealand experiences fairly frequent moderate-sized earthquakes; the region within 200 km of the January 20, 2014 event has experienced 35 earthquakes of M 5.5 or larger over the past century. The 2014 event is just a few kilometers to the east of a M 7.3 earthquake in March of 1934, and approximately 40 km southwest of two M6.2 and 6.4 earthquakes near Dannevirke in March and May of 1990, respectively. The 1990 events did not cause significant damage or fatalities. —USGS/EHP

For more information on earthquakes, including forecasts and warnings, search blog content.

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Significant Quakes January 4 – 5, 2014

Posted by feww on January 5, 2014

Global Earthquakes: 1 Day, Magnitude 2.5+

20 earthquakes struck globally in the 24 hours to 07:23:31UTC on January 5, 2014.

M 5.3 – 40km W of El Dovio, Colombia
Time: 2014-01-05 03:36:41 UTC
Location: 4.558°N 76.600°W
Depth: 61.4km

M 5.1 – 292km E of Chul’man, Russia
Time: 2014-01-04 19:34:27 UTC
Location: 56.714°N 129.683°E
Depth: 12.3km

M3.7 – 17km NNW of Langston, Oklahoma
Time: 2014-01-04 23:33:32 UTC
Location: 36.099°N 97.306°W
Depth; 4.6km

M3.5 – 2km NNE of Cherokee, Oklahoma
Time: 2014-01-04 20:35:32 UTC
Location: 36.772°N 98.347°W
Depth: 12.6km

M3.2 – 15km NNW of Chandler, Oklahoma
Time: 2014-01-04 21:26:17 UTC
Location: 35.838°N 96.934°W
Depth: 5.0km

M 4.9 – Kuril Islands
Time: 2014-01-04 16:10:17 UTC
Location: 47.252°N 153.014°E
Depth: 51.5km

M 4.7 – 157km ENE of Hachijo-jima, Japan
Time: 2014-01-04 18:12:20 UTC
Location: 33.757°N 141.288°E
Depth: 36.8km

[Source: USGS/EHP]

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U.S. Earthquakes 24 Hrs

Posted by feww on December 31, 2013

U.S. Earthquakes  24 Hrs to 02:30UTC – December 31, 2013

Of the 28 earthquakes measuring magnitude 2.5+ that have occurred globally in the past 24 hours, 6 have struck the Lower 48, including 2 in Oklahoma, as of posting.

Of the 171 earthquakes (all magnitudes) that have struck the globe in the past 24 hours, 102 have occurred in the Contiguous U.S., mostly in California, 39 in Alaska and 3 in Hawaii, as of posting, with the most significant quake measuring 3.7Mw, striking 4km SSW of Idyllwild, California at a depth of 19.4km (Also M3.8 event occurred 35km SW of Anchor Point, Alaska at a depth of 83.2km). Source: USGS/EHP.

Related Links

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Significant Quake Strikes Ibaraki, Japan

Posted by feww on December 31, 2013

M5.4 Earthquake Strikes Near Ibaraki,  Japan

The event was centered near 36.7ºN, 140.7ºE and occurred at a depth of 10km. The quake was followed by several aftershocks, with the largest measuring 3.6Mw, as of posting.

EQ Details [USGS/EHP]

  • Magnitude: 5.1Mw
  • Event Time: 2013-12-31 01:03:00 UTC
  • Location: 36.789°N 140.591°E depth=9.9km (6.2mi)
  • Nearby Cities:
    • 13km (8mi) NW of Takahagi, Japan
    • 14km (9mi) W of Kitaibaraki, Japan
    • 21km (13mi) NNW of Hitachi, Japan
    • 21km (13mi) E of Daigo, Japan
    • 146km (91mi) NNE of Tokyo, Japan

Japan quake 123113 location map
Earthquake Location Map. Source: USGS/EHP

EQ Details [JMA]
Magnitude: 5.4Mw
Event Time: 2013-12-31 01:03:00 UTC
Location: 36.7°N 140.7°E depth=10km
Region:  Ibaraki-ken Hokubu

earthquake location map JMA 311213
Earthquake Location Map.  Maximum intensity of 5 on Japan’s 1-7 scale recorded near epicenter. Source: Japan Meteorological Agency (JMA).

.

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Significant Earthquakes Strike Oklahoma

Posted by feww on December 29, 2013

9 Percent of the day’s global seismicity occurred in Oklahoma, 17 percent in Lower 48!!

M4.1 earthquakes strikes near Langston, Oklahoma

The quake was centered at 35.896°N, 97.306°W and struck at a depth of about 5.0km (3.1mi). 

Earthquake Details

  • Magnitude: 4.1Mw
  • Event Time: 2013-12-29 08:14:36 UTC
  • Location: 35.896°N 97.306°W depth=5.0km (3.1mi)
  • Nearby Cities:
    • 7km (4mi) SW of Langston, Oklahoma
    • 10km (6mi) E of Guthrie, Oklahoma
    • 31km (19mi) NNE of Edmond, Oklahoma
    • 33km (21mi) SW of Stillwater, Oklahoma
    • 51km (32mi) NNE of Oklahoma City, Oklahoma

Olahoma eq locmap
Oklahoma Earthquakes Location Map.

The event followed two smaller earthquakes measuring

  • M3.4  (Location 36.870°N 97.622°W depth=4.3km; 155km N of Oklahoma City) and
  • M3.1 (36.141°N 97.329°W depth=5.0km; 76km NNE of Oklahoma City).

30 day EQs in Oklahoma and Texas
30 Days, Magnitude 2.5+ Earthquakes in Texas, Oklahoma and Kansas. 40 Earthquakes in the map area. Global map includes 1012 earthquakes – Updated: 2013-12-29 10:06:05UTC. Source: USGS/EHP

About 17  percent of the global seismicity in the past 30 days, in terms of number of events measuring M2.5+, occurred in or near contiguous United States.

Oklahoma Earthquakes in November

At least 41 earthquakes measuring 2.5Mw or greater struck the state of Oklahoma in November 2013, according to data provided by USGS/EHP.

The largest shock in the cluster (No. 11 on the table below) measured 3.8Mw, striking at a depth of 5.9km on November 11, 2013 some 5km WNW of Jones, Oklahoma.

ok quakes nov2013-s
List of Oklahoma Earthquakes measuring 2.5Mw or greater, November 2013.

Tectonic Summary [USGS/EHP]

Induced Seismicity. As is the case elsewhere in the world, there is evidence that some central and eastern North America earthquakes have been triggered or caused by human activities that have altered the stress conditions in earth’s crust sufficiently to induce faulting. Activities that have induced felt earthquakes in some geologic environments have included impoundment of water behind dams, injection of fluid into the earth’s crust, extraction of fluid or gas, and removal of rock in mining or quarrying operations. In much of eastern and central North America, the number of earthquakes suspected of having been induced is much smaller than the number of natural earthquakes, but in some regions, such as the south-central states of the U.S., a significant majority of recent earthquakes are thought by many seismologists to have been human-induced. Even within areas with many human-induced earthquakes, however, the activity that seems to induce seismicity at one location may be taking place at many other locations without inducing felt earthquakes. In addition, regions with frequent induced earthquakes may also be subject to damaging earthquakes that would have occurred independently of human activity. Making a strong scientific case for a causative link between a particular human activity and a particular sequence of earthquakes typically involves special studies devoted specifically to the question. Such investigations usually address the process by which the suspected triggering activity might have significantly altered stresses in the bedrock at the earthquake source, and they commonly address the ways in which the characteristics of the suspected human-triggered earthquakes differ from the characteristics of natural earthquakes in the region.

one-day quakes worldwide 28-29 december 13
Earthquake Location Map. 1 Day, Magnitude 2.5+ Earthquakes Worldwide. 34 earthquakes shown on the map, updated at 2013-12-29 09:49:36 UTC. Source: USGS/EHP

M5.8 Quake Strikes Off the Coast of Turkey

  • Event Time:2013-12-28 15:21:05 UTC
  • Location: 35.980°N 31.340°E depth=51.1km (31.7mi)
  • Nearby Cities
    • 80km (50mi) SSW of Avsallar, Turkey
    • 204km (127mi) WNW of Nicosia, Cyprus

Tectonic Summary: Seismotectonics of the Mediterranean Region and Vicinity

The Mediterranean region is seismically active due to the northward convergence (4-10 mm/yr) of the African plate with respect to the Eurasian plate along a complex plate boundary. This convergence began approximately 50 Ma and was associated with the closure of the Tethys Sea. The modern day remnant of the Tethys Sea is the Mediterranean Sea. The highest rates of seismicity in the Mediterranean region are found along the Hellenic subduction zone of southern Greece, along the North Anatolian Fault Zone of western Turkey and the Calabrian subduction zone of southern Italy. Local high rates of convergence at the Hellenic subduction zone (35mm/yr) are associated with back-arc spreading throughout Greece and western Turkey above the subducting Mediterranean oceanic crust.

 
The region of the Marmara Sea is a transition zone between this extensional regime, to the west, and the strike-slip regime of the North Anatolian Fault Zone, to the east. The North Anatolian Fault accommodates much of the right-lateral horizontal motion (23-24 mm/yr) between the Anatolian micro-plate and Eurasian plate as the Anatolian micro-plate is being pushed westward to further accommodate closure of the Mediterranean basin caused by the collision of the African and Arabian plates in southeastern Turkey. Subduction of the Mediterranean Sea floor beneath the Tyrrhenian Sea at the Calabrian subduction zone causes a significant zone of seismicity around Sicily and southern Italy. Active volcanoes are located above intermediate depth earthquakes in the Cyclades of the Aegean Sea and in southern Italy.

In the Mediterranean region there is a written record, several centuries long, documenting pre-instrumental seismicity (pre-20th century). Earthquakes have historically caused widespread damage across central and southern Greece, Cyprus, Sicily, Crete, the Nile Delta, Northern Libya, the Atlas Mountains of North Africa and the Iberian Peninsula. The 1903 M8.2 Kythera earthquake and the 1926 M7.8 Rhodes earthquakes are the largest instrumentally recorded Mediterranean earthquakes, both of which are associated with subduction zone tectonics. Between 1939 and 1999 a series of devastating M7+ strike-slip earthquakes propagated westward along the North Anatolian Fault Zone, beginning with the 1939 M7.8 Erzincan earthquake on the eastern end of the North Anatolian Fault system. The 1999 M7.6 Izmit earthquake, located on the westward end of the fault, struck one of Turkey’s most densely populated and industrialized urban areas killing, more than 17,000 people. Although seismicity rates are comparatively low along the northern margin of the African continent, large destructive earthquakes have been recorded and reported from Morocco in the western Mediterranean, to the Dead Sea in the eastern Mediterranean. The 1980 M7.3 El Asnam earthquake was one of Africa’s largest and most destructive earthquakes within the 20th century.

Large earthquakes throughout the Mediterranean region have also been known to produce significant and damaging tsunamis. One of the more prominent historical earthquakes within the region is the Lisbon earthquake of November 1, 1755, whose magnitude has been estimated from non-instrumental data to be about 8.0. The 1755 Lisbon earthquake is thought to have occurred within or near the Azores-Gibraltar transform fault, which defines the boundary between the African and Eurasian plates off the west coast of Morocco and Portugal. The earthquake is notable for both a large death toll of approximately 60,000 people and for generating a tsunami that swept up the Portuguese coast inundating coastal villages and Lisbon. An earthquake of approximately M8.0 near Sicily in 1693 generated a large tsunami wave that destroyed numerous towns along Sicily’s east coast. The M7.2 December 28, 1908 Messina earthquake is the deadliest documented European earthquake. The combination of severe ground shaking and a local tsunami caused an estimated 60,000 to 120,000 fatalities.  [Source:USGS National Earthquake Information Center.]

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Significant Quake Strikes near Frontera, Canary Islands

Posted by feww on December 28, 2013

SIGNIFICANT EARTHQUAKES 2013

Magnitude 5.4 earthquake strikes 31km NW of Frontera, Canary Islands, Spain

The earthquake, centered at 27.915°N, 18.271°W, about 31km NW of El Hierro, struck at a depth  of about 23 km [ GEOFON Program reported depth as 10km.]

El Hierro (area: 280 km², Elevation 1,500; population: 14,000) is a steeply mountainous volcanic island, which emerged from the ocean about 1.2 million year ago following three successive explosive eruptions. The only recorded eruption on the island in recent times occurred in 1793, which lasted for more than 30 days and produced lava flows, after the Volcan de Lomo Negro vented.

Earthquake Location Map

earthquake location map frontera 2013 dec 27
Source: USGS/EHP. Map enhanced by FIRE-EARTH Blog.

Quake Details [USGS/EHP]

  • Event Time: 2013-12-27 at 17:46UTC
  • Location: 27.915°N 18.271°W; Depth=22.8km [18.19°W, 27.87°N; Depth: 10km GEOFON Program]
  • Nearby Cities
    • 31km (19mi) NW of Frontera, Spain
    • 89km (55mi) SSW of Los Llanos de Aridane, Spain
    • 98km (61mi) SSW of Santa Cruz de la Palma, Spain
    • 148km (92mi) WSW of Santiago del Teide, Spain
    • 507km (315mi) W of Laayoune / El Aaiun, Western Sahara

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Magnitude 5.5 Quake Shakes Tokyo

Posted by feww on December 14, 2013

Significant earthquake strikes offshore eastern Japan

Quake Details [USGS/EHP]

Magnitude: 5.4
Event Time: 2013-12-14 04:06:14UTC
Epicenter: 35.621°N, 140.686°E
Depth: 36.0km (22.4mi)
Nearby Cities
11km (7mi) SSE of Asahi, Japan
90km (56mi) E of Tokyo, Japan

Quake Details [Japan Met]
Magnitude: 5.5
Time:  13:06 JST 14 Dec 2013 (JST)
Epicenter: 35.6ºN, 140.8ºE ( Chiba-ken, Toho-oki)
Depth: 50 km
Max JMA Seismic Intensity: 4

Earthquake Location Map

google logo of the day 2
Earthquake Location Map. Source: USGS/EHP.

google logo of the day 2
Earthquake Location Map. Source: Japan Met

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