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Posts Tagged ‘seismograms’

Magnitude 6.3 quake strikes Taiwan region

Posted by feww on July 13, 2009

Strong Quake Strikes Taiwan – March 4

FOR March 4, 2010 Quake in Taiwan Click the Link ABOVE

A Magnitude 6.3 earthquake occurred near east coast of Taiwan.

A Magnitude 6.3 mainshock followed by a M5.1 aftershock struck about 60km east of the coastal town of Hua-lien, Taiwan, at a depth of 24.7 km, USGS reported.

The quake occurred about 40km east of an unnamed volcano [Volcano Number: 0801-03= ; Latitude: 24.00°N,  Longitude: 121.83°E] where according to the Global Volcanism Program:

A submarine eruption observed by the U.S. Navy boat “Southampton” took place on October 29, 1853 in the Philippine Sea offshore from the city of Hualien about 18 km from the eastern coast of Taiwan. Several days later another ship, the “Macedonian,” passed the same location and reported white ash covering its curtains.

Subject to further seismic activity in the area FEWW will publish the probability of eruption at volcano 0801-03.

10-degree Map Centered at 25°N,120°E

Tw - us2009jabu
Earthquake location. Original Map: USGS

Earthquake Details:

  • Magnitude: 6.3
  • Date-Tim:
    • Monday, July 13, 2009 at 18:05:02 UTC
    • Tuesday, July 14, 2009 at 02:05:02 AM at epicenter
  • Location:  23.997°N, 122.177°E
  • Depth:  24.7 km (15.3 miles)
  • Region:  TAIWAN REGION
  • Distances:
    • 60 km (40 miles) E of Hua-lien, Taiwan
    • 75 km (45 miles) SSE of Su-ao, Taiwan
    • 135 km (85 miles) SSE of T’AI-PEI, Taiwan
    • 150 km (95 miles) SE of Hsin-chu, Taiwan
  • Location Uncertainty:  horizontal +/- 6.9 km (4.3 miles); depth +/- 20 km (12.4 miles)
  • Parameters NST= 95, Nph= 95, Dmin=62.3 km, Rmss=0.72 sec, Gp= 50°, M-type=teleseismic moment magnitude (Mw), Version=6
  • Source:  USGS NEIC (WDCS-D)
  • Event ID: us2009jabu

Seismic Hazard Map – USGS


Major Tectonic Boundaries: Subduction Zones -purple, Ridges -red and Transform Faults -green

Historic Seismicity [7+ shocks sine 1900] – USGS



Major Tectonic Boundaries: Subduction Zones -purple, Ridges -red and Transform Faults -green

Related Links:

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