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Posts Tagged ‘vanuatu quake’

M7.6 Quake Strikes Vanuatu Region

Posted by feww on December 25, 2010

Powerful 7.6Mw Quake Strikes Near Isangel, Vanuatu

The earthquake struck at a depth of 20 km, possibly creating a local tsunami

This earthquake was preceded by at least 3 significant foreshocks in the past 48 hours, the largest of which measured 5.7Mw.

FIRE-EARTH Forecast:  A megaquake could strike Vanuatu Region/ Kermadec Islands Region/New Zealand with a probability of 68%.

10-degree Map Centered at 20°S,170°E


EQ Location Map. Source: USGS. Map enhanced by FIRE-EARTH

Tsunami Warning/Advisory

Pacific Tsunami Warning Center has just issued the following Bulletin

WEPA40 PHEB 251326
TSUPAC

TSUNAMI BULLETIN NUMBER 001
PACIFIC TSUNAMI WARNING CENTER/NOAA/NWS
ISSUED AT 1326Z 25 DEC 2010

THIS BULLETIN APPLIES TO AREAS WITHIN AND BORDERING THE PACIFIC
OCEAN AND ADJACENT SEAS…EXCEPT ALASKA…BRITISH COLUMBIA…
WASHINGTON…OREGON AND CALIFORNIA.

… A TSUNAMI WARNING IS IN EFFECT …

A TSUNAMI WARNING IS IN EFFECT FOR

VANUATU / NEW CALEDONIA / FIJI

FOR ALL OTHER AREAS COVERED BY THIS BULLETIN… IT IS FOR
INFORMATION ONLY AT THIS TIME.

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 – 1317Z 25 DEC 2010
COORDINATES – 19.7 SOUTH 168.0 EAST
DEPTH – 33 KM
LOCATION – VANUATU ISLANDS REGION
MAGNITUDE – 7.6

EVALUATION

IT IS NOT KNOWN THAT A TSUNAMI WAS GENERATED. THIS WARNING IS
BASED ONLY ON THE EARTHQUAKE EVALUATION. AN EARTHQUAKE OF THIS
SIZE HAS THE POTENTIAL TO GENERATE A DESTRUCTIVE TSUNAMI THAT CAN
STRIKE COASTLINES IN THE REGION NEAR THE EPICENTER WITHIN MINUTES
TO HOURS. AUTHORITIES IN THE REGION SHOULD TAKE APPROPRIATE
ACTION IN RESPONSE TO THIS POSSIBILITY. THIS CENTER WILL MONITOR
SEA LEVEL GAUGES NEAREST THE REGION AND REPORT IF ANY TSUNAMI
WAVE ACTIVITY IS OBSERVED. THE WARNING WILL NOT EXPAND TO OTHER
AREAS OF THE PACIFIC UNLESS ADDITIONAL DATA ARE RECEIVED TO
WARRANT SUCH AN EXPANSION.

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
——————————– ———— ————
VANUATU ANATOM IS. 20.2S 169.9E 1338Z 25 DEC
ESPERITU SANTO 15.1S 167.3E 1404Z 25 DEC
NEW CALEDONIA NOUMEA 22.3S 166.5E 1359Z 25 DEC
FIJI SUVA 18.5S 178.5E 1512Z 25 DEC

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

THE WEST COAST/ALASKA TSUNAMI WARNING CENTER WILL ISSUE PRODUCTS
FOR ALASKA…BRITISH COLUMBIA…WASHINGTON…OREGON…CALIFORNIA.

Earthquake Details

GFZ Potsdam – Earthquake Bulletin
Region: Vanuatu Islands Region
Time: 2010-12-25 13:16:38.7 UTC
Magnitude: 7.7
Epicenter: 167.96°E, 19.76°S
Depth: 20 km
Status: manually revised

USGS/EHP

  • Magnitude: 7.6
  • Date-Time: Saturday, December 25, 2010 at 13:16:38 UTC
  • Location: 19.759°S, 167.974°E
  • Depth: 24.4 km (15.2 miles)
  • Region: VANUATU REGION
  • Distances
    • 138 km (86 miles) W (259°) from Isangel, Vanuatu
    • 196 km (122 miles) N (3°) from Tadine, Loyalty Islands, New Caledonia
    • 226 km (140 miles) S (189°) from PORT-VILA, Vanuatu
    • 1,749 km (1087 miles) ENE (64°) from Brisbane, Australia
  • Location Uncertainty:
    • horizontal +/- 16.3 km (10.1 miles);
    • depth +/- 1.4 km (0.9 miles)
  • Source: U.S. Geological Survey, National Earthquake Information Center: World Data Center for Seismology, Denver
  • Event ID usc0000usf

Aftershocks

Hundreds of aftershocks should be expected to strike the area in the coming days and weeks.

Related Links:

Posted in earthquake, earthquake 2010, earthquake forecast, Earthquake news, earthquake report | Tagged: , , , | 6 Comments »

M 7.4 Quake Strikes Vanuatu Islands

Posted by feww on August 10, 2010

A Powerful Earthquake Measuring at least 7.4Mw Strikes Vanuatu Islands, Triggers Local Tsunami

The earthquake, epicentered at 168.02°E, 17.48°S, struck at about 05:24UTC  at a depth of about 45km, creating a small tsunami measuring up to a height of about 70 – 80cm.

There were no reports of casualties or major damage, as of posting; however, according to eyewitness reports the powerful quake shook the ground for about 10 seconds.

At last a dozen aftershocks, some measuring greater than 5.0Mw, have so far occurred. More aftershocks should be expected.

Earthquake Details:

Region: Vanuatu Islands
Time: 2010-08-10 05:23:47.8 UTC
Magnitude: 7.4
Epicenter: 168.02°E 17.48°S
Depth: 45 km
Source: GFZ Potsdam – Earthquake Bulletin

Related Links:

Posted in earthquake warning Honshu, Earthquakes 2010, Espiritu Santo | Tagged: , , , | Leave a Comment »

Strong Quake Strikes Vanuatu – March 4

Posted by feww on March 4, 2010

Strong Earthquake Measuring Up to 6.6Mw Strikes 210 km N of Luganville, Espiritu Santo, Vanuatu

The quake struck at a depth of about 180km on Thursday, March 04, 2010 at 14:02:30 local time.

The mainshock was preceded by a Magnitude 5.0 foreshock.

Location
The epicenter was located at 13.616°S, 167.135°E, USGS said.

Tsunami Status
The hypocenter of this event was located too deep below the ocean floor to cause  a significant tsunami.

10-degree Map Centered at 15°S,165°E


EQ Location Map. Source: USGS/EHP. Image Edited and Enhanced by FEWW.

The quake occurred near 3 volcanoes: Gaua (80km), Suretamatai (40km) and Motlav (60km).

Gaua has been active sporadically since September 2009.

According to Global Volcanism Program website

On 29 January, the Vanuatu Geohazards Observatory reported significant changes in Gaua’s activity over the previous two weeks. They noted that since 16 January more gas was emitted and multiple explosions produced denser and darker ash plumes. During 22-29 January, the water level in the river to the E that Lake Letas feeds rose 10 cm. Gas-and-ash plumes rose 3 km and drifted S and W. On 24 January nearby villagers reported seeing ejected material from Strombolian activity. The Wellington VAAC reported that on 27 January an ash cloud was seen on satellite imagery. Strong explosions were seen and heard from East Gaua on 29 January. According to the VAAC, the Vanuatu Geohazards Observatory reported that gas-and-ash plumes rose to altitudes of 3 km (10,000 ft) a.s.l. and drifted S and W that same day.

Fire-Earth Moderators believe Gaua could resume activity in the coming days.

Related Links:

      Posted in 32421912, earthquake, Gaua, Motlav, Suretamatai, volcanism | Tagged: , , , , , , , | Leave a Comment »

      Earth undergoing significant geophysical disturbances

      Posted by feww on October 8, 2009

      More Powerful Quakes Strike Vanuatu, Santa Cruz Islands

      FEWW Moderators believe Earth may be undergoing significant geophysical disturbances with cataclysmic consequences for humans

      [The disturbances and disasters that spawn from them are enhanced by human activity.]

      Powerful earthquake measuring up to 7.3Mw strikes Vanuatu, Santa Cruz Islands, the fifth shock in less than 11 hrs

      Since Wednesday, October 07, 2009 at 22:03 UTC, about 11 hours from time of posting, a total of 19 shocks have struck Vanuatu and Santa Cruz Islands Regions. The Mainshock which measured up to 8.2 Mw struck Vanuatu region, followed by 18 additional shocks in the two neighboring regions.

      The most powerful of these shocks measured up to 8.1, 7.6 , 7.0 and 7.3 Mw. [Source of initial data: USGS/EHP; maximum quake magnitudes estimated by FEWW.]

      10-degree Map Centered at 15°S,165°E

      Vanuatu - 2
      Earthquake Location Map. Source: USGS/EHP. Enhanced by FEWW


      Related Links:

      Recent Human Enhanced Disasters Asia-Pacific

      See also:

      Posted in earthquake forecast, Earthquakes, large earthquakes, significant geophysical disturbances | Tagged: , , , , , | 14 Comments »