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Posts Tagged ‘Bulletin NO. 84’

Powerful EQ Strikes New Britain Trench

Posted by feww on April 20, 2014

SEISMIC HAZARD
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M7.5 Strikes SW of Panguna, PNG

The powerful quake was the latest in a cluster of shocks rattling the North Solomons Region and follows a M7.1 quake that struck near the boundary of Australia plate and overriding Pacific plate, some 57km SW of Panguna, on April 11, 2014.

FIRE-EARTH Earthquake Forecast

FIRE-EARTH released details of a forecast for a MEGA EARTHQUAKE in SOLOMON ISLANDS in Bulletin NO. 84, which was released on April 12.

The next FIRE-EARTH Earthquake Forecast will appear in Bulletin No. 89, which will be published later today (April 20, 2014).

Earthquake Details

Magnitude: 7.5Mw
Event Time: 2014-04-19 13:27:59UTC
Location: 6.720°S, 154.931°E
Depth: 30.9km (19.2mi)
Nearby Cities

  • 75km (47mi) SW of Panguna, Papua New Guinea
  • 87km (54mi) SW of Arawa, Papua New Guinea

EQ Location Map

one-day PNG
One-day significant quakes North Solomons, PNG. Source: USGS/EHP.

7-day png
7-day significant quakes North Solomons, PNG. Source: USGS/EHP.

30-day PNG
30-day significant quakes North Solomons, PNG. Source: USGS/EHP.

Boundary between Australia and Pacific Plates – PNG Region

The boundary between Australia and Pacific plates in the PNG  region has produced 35 M 7+ events within 250 km of the April 19, 2014 earthquake in the last 100 years, said USGS/EHP. The largest was M 8.0 about 175 km NW of the April 19, 2014  event, one of two M8+ earthquakes 140 km apart in July 1971. The M 8.1 Solomon Islands earthquake in April 2007, which caused a devastating tsunami, occurred about 300 km southeast of the April 19, 2014 quake.

Tsunami Update

A Tsunami Warning that was issued immediately after the quake has since been canceled.

A tsunami was detected, however there’s currently NO threat of a destructive Pacific-wide tsunami as a result of the above earthquake.

Related Links and Recent Significant Seismic Events

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Another Powerful Quake Strikes Solomon Islands

Posted by feww on April 13, 2014

SEISMIC HAZARD
INTENSE SEISMICITY

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M7.4 Strikes 111km S of Kirakira, Solomon Islands

The quake was the second powerful quake occurring along the South Solomon Trench since 20:14UTC on Saturday, and the latest event in the ongoing episode of intense seismicity on or near the boundary between the Australia and Pacific plates.

FIRE-EARTH Earthquake Forecast

MEGA EARTHQUAKE COULD STRIKE SOLOMON ISLANDS

A  detailed FIRE-EARTH Earthquake Forecast appeared in the Bulletin NO. 84, which was released on April 12.

The next FIRE-EARTH Earthquake Forecast will be issued together with the April 13 Bulletin, later today.

EQ Details
Magnitude: 7.4Mw
Event Time:  12:36:18 UTC on 2014-04-13
Location:11.451°S 162.069°E depth=35.0km (21.7mi)
Nearby Cities

  • 111km (69mi) S of Kirakira, Solomon Islands
  • 321km (199mi) SE of Honiara, Solomon Islands

South Solomon Trench 7M4
Source: USGS/EHP

solomon islands - EQS 13apr14

 

Tsunami Evaluation

PACIFIC TSUNAMI WARNING CENTER/NOAA/NWS
ISSUED AT 13:18UTC 13 APR 2014

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 continue to 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
 --------------------------------    ------------    ------------
 SOLOMON ISLANDS  KIRAKIRA           10.4S 161.9E    1258Z 13 APR
                  SANTA_CRUZ_ISLA    10.9S 165.9E    1314Z 13 APR
                  AUKI                8.8S 160.6E    1318Z 13 APR
                  HONIARA             9.3S 160.0E    1324Z 13 APR
                  MUNDA               8.4S 157.2E    1336Z 13 APR
                  GHATERE             7.8S 159.2E    1341Z 13 APR
                  FALAMAE             7.4S 155.6E    1355Z 13 APR
                  PANGGOE             6.9S 157.2E    1359Z 13 APR
 VANUATU          ESPERITU_SANTO     15.1S 167.3E    1341Z 13 APR
 PAPUA NEW GUINE  WOODLARK_ISLAND     9.0S 152.9E    1408Z 13 APR
                  AMUN                6.0S 154.7E    1409Z 13 APR
                  KIETA               6.1S 155.6E    1418Z 13 APR

Related Links

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