Magnitude 6.3 quake strikes Taiwan region

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

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:

• FEWW Earthquake Links
• Volcanoes
• FEWW Volcano Links

Bangladesh Town Threatened by Flooded River

Image of the Day: Bangladesh Town Threatened by Flooding

Sirajganj town is under threat of flooding after parts of its flood protection embankment on the Jamuna River at Sashanghat collapsed. Heavy rain and swollen river raised the threat against The Jamuna bridge, and a vast stretch of Sirajganj town’s flood barrier. Photo: The Daily Star. Image may be subject to copyright.

“Hundreds of people including soldiers and police were struggling to stop a town being washed away by the choppy Jamuna river in Bangladesh over the last two days, officials said Saturday.

“Boulders, concrete blocks, brick slabs and sand bags were being dropped by volunteers, government staff and troops along a partially eroded river bank at Sirajganj district town 160 km (100 miles) northwest of the capital Dhaka.” Reuters reported.

Related Links:

• Drought and Deluge