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Archive for the ‘Indian Ocean tsunami’ Category

Powerful Earthquake Strikes Southern Sumatra, Indonesia

Posted by feww on September 30, 2009

More Megaquakes May Strike PRF Anytime

Magnitude 7.9 earthquake strikes southern Sumatra, Indonesia

Magnitude 7.9 earthquake struck southern Sumatra, Indonesia, 50 km (30 miles) WNW of Padang, at a depth  of about 85 km on Wednesday, September 30, 2009 at 10:16 UTC, USGS/EHP reported.

Only hours ago, having briefly analyzed details of the Samoan earthquake, FEWW had foretasted that up to 3 more powerful quakes could strike the Pacific Ring of Fire in 2009.

Four weeks ago a deadly earthquake measuring  7.3 to 7.6 Mw struck off the coast of Java, Indonesia, killing more than 80 people and injuring at least another 1,250.

Tsunami Warning

Pacific Tsunami Warning Center (NOAA) has issued a tsunami warning based on the size and location of the earthquake for countries bordering Indian Ocean: Indonesia, India, Thailand and Malaysia.

Damage Report

“People are panicking. They are running out of the buildings… There are many collapsed buildings,” an eye-witness in Padang told a local TV station.

“Hundreds of houses have been damaged along the road. There are some fires, bridges are cut and there is extreme panic here maybe because water pipes are broken and there is flooding in the streets,” another witness told Reuters.

“Hundreds of houses have been damaged along the road,” another eye-witness in Padang said.

“There are some fires, bridges are cut and there is extreme panic here maybe because water pipes are broken and there is flooding in the streets.”

Padang has a population of just under 1,000,000 people. There were no reports of casualties as of posting; however, given that so many buildings have collapsed, it’s more than likely that many people would have been killed or injured.

According to a local report, power and phone lines are down in Pandang and several other parts of Indonesia.

The mainshock was followed by a strong aftershock measuring 6.0  GFZ Potsdam/ Earthquake Bulletin reported. More strong aftershocks are highly probable.

10-degree Map Centered at 0°N,100°E

Southern Sumatara - 30 September 2009
Earthquake Location Map.
Source USGS/EHP

GFZ Potsdam – Earthquake Bulletin
Region:     Southern Sumatra, Indonesia
Time:     2009-09-30 10:16:10.4 UTC
Magnitude:     7.8
Epicenter:     99.87°E   0.80°S
Depth:     84 km
Status:     manually revised

Earthquake Details (according to USGS)

  • Magnitude: 7.9
  • Date-Time:
    • Wednesday, September 30, 2009 at 10:16:10 UTC
    • Wednesday, September 30, 2009 at 05:16:10 PM at epicenter
  • Location: 0.797°S, 99.925°E
  • Depth: 85 km (52.8 miles)
  • Region: SOUTHERN SUMATRA, INDONESIA
    Distances:

    • 50 km (30 miles) WNW of Padang, Sumatra, Indonesia
    • 225 km (140 miles) SW of Pekanbaru, Sumatra, Indonesia
    • 475 km (295 miles) SSW of KUALA LUMPUR, Malaysia
    • 960 km (600 miles) NW of JAKARTA, Java, Indonesia
  • Location Uncertainty: horizontal +/- 10.6 km (6.6 miles); depth +/- 16.1 km (10.0 miles)
    Parameters:  NST= 44, Nph= 44, Dmin=523.2 km, Rmss=1.44 sec, Gp= 47°,   M-type=teleseismic moment magnitude (Mw), Version=7
  • Source: USGS NEIC (WDCS-D)
  • Event ID: us2009mebz

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Posted in Indian Ocean tsunami, Indonesia tsunami, large earthquakes, megaquakes, sumatra tsunami | Tagged: , , , , , , | 5 Comments »

Latest Earthquakes Magnitude 5.5 +

Posted by feww on September 19, 2009

Latest Earthquakes Measuring Magnitude 5.5 or Larger since September 18, 2009

The following significant earthquakes occurred within a 12-hour period.

The Bali Earthquake detailed below was reported as a Magnitude  6.0  shock by the  European-Mediterranean Seismological Center. 

GFZ Potsdam – Earthquake Bulletin
Region: South of Bali, Indonesia
Time: 2009-09-18 at 23:06:59.5 UTC
Magnitude: 5.9
Epicenter: 115.42°E 9.47°S
Depth: 77 km
Status: automatic
gfz2009simp location map

The quake was described as “very strong” by a number of people who sopke to the media. People were reportedly jumping from building and running away from their homes in panic after the quake struck. Up to a dozen people have been injured, some hurt jumping from buildings while others were hit by falling debris, according to news reports quoting officials.  No tsunami warning was issued.

An earthquake on the main Indonesian island of Java left more than 50 dead on September 2, 2009.

The 9.3 Mw Sumatra-Andaman earthquake which caused the 2004 Indian Ocean tsunami that killed an estimated quarter of million people in 11 countries, was the second largest earthquake recorded on a seismograph. The earthquake was also characterized by the longest ever duration of faulting lasting about 10 minutes, which made the entire planet to vibrate about 1 cm triggering earthquakes as far north as in Alaska.

FEWW Comments: More Mega-quakes should be expected in this region and other areas in the coming months. FEWW will post a separate [disturbing] forecast later.

Magnitude 5.6 – REVILLA GIGEDO ISLANDS REGION

  • Date-Time:  Friday, September 18, 2009 at 18:46:08 UTC [Friday, September 18, 2009 at 11:46:08 AM at epicenter]
  • Location: 19.239°N, 108.494°W
  • Depth 10 km (6.2 miles)
  • Distances: 265 km (165 miles) ENE of Socorro Island, Mexico
  • Source: USGS NEIC (WDCS-D)

10-degree Map Centered at 20°N,110°W

REVILLA GIGEDO ISLANDS REGION
EQ Location Map. Source of original map: USGS

GFZ Potsdam – Earthquake Bulletin

Region: Halmahera, Indonesia
Time: 2009-09-18 at 18:34:25.6 UTC
Magnitude: 5.7
Epicenter: 127.16°E 1.80°N
Depth: 110 km

Status: manually revised
gfz2009sidp location map

GFZ Potsdam – Earthquake Bulletin

GFZ Potsdam – Earthquake Bulletin
Region: Mindanao, Philippines
Time: 2009-09-18 11:53:50.2 UTC
Magnitude: 5.5
Epicenter: 124.71°E 6.51°N
Depth: 23 km
Status: manually revised

gfz2009shqk location map
GFZ Potsdam Images
© Helmholtz-Zentrum Potsdam Deutsches GeoForschungsZentrum – GFZ

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Posted in Alaska quake, Bali quake, Indian Ocean tsunami, Java Quake, Mega-Quakes, REVILLA GIGEDO ISLANDS, Sumatra-Andaman earthquake, tsunami warning | Tagged: , , , , , , , , , | Leave a Comment »