6.6 quake offshore Indonesia

EQ-20100505-176757-ID
Magnitude: 6.6
Mercalli scale: 8
Date-Time [UTC]: 05 May, 2010 at 16:29:03 UTC
Local Date/Time: Wednesday, May 05, 2010 at 16:29 in the afternoon at epicenter
Location: 4° 17.100, 100° 55.320
Depth: 33.00 km (20.51 miles)
Region: Indonesian archipelago
Country: Indonesia
Distances: 200.6 km (124.65 miles) S of Curup, Propinsi Bengkulu

Source: USGS-RSOE

hisz.rsoe.hu...

No details yet

(Reuters) - A magnitude 6.3 earthquake struck off the coast of Sumatra in Indonesia on Wednesday, the U.S. Geological Survey said. World | Natural Disasters

The quake, which was earlier reported to be of 6.6. magnitude, occurred at 11:29 p.m. local time (1629 GMT) and was centered about 137 km (85 miles) southwest of Bengkulu in Sumatra, the USGS said. The depth was 18 km (11 miles).

There were no immediate reports of damage or injuries.

The Pacific Tsunami Warning Center said there was no threat of a destructive, widespread tsunami although there was a small possibility of a local tsunami near the area of the quake.

reply to post by apacheman


www.reuters.com...

Thanks for posting this - I saw it on my eQuake but can't start new threads yet. Also noticed there was another one a minute ago in Papua New Guinea (5.6M).

[edit on 5-5-2010 by Quikslvr]

theres been 3 mag 6 eqs in indonesia and roughly in the same area. Something to watch for I think like Volcanic activity

reply to post by apacheman


Could someone explain how the depth of the earthquake effects the outcome? I see it all of the time and I'm not sure if the shallower earthquakes are more dangerous or not. I would assume so but I'm not a geologist. Thanks...

EQ-20100505-176760-PG
5.6
Mercalli scale: 6
Date-Time [UTC]: 05 May, 2010 at 17:09:11 UTC
Local Date/Time: Wednesday, May 05, 2010 at 17:09 in the afternoon at epicenter
Location: 6° 22.800, 154° 53.400
Depth: 75.00 km (46.60 miles)
Region: Indonesian archipelago
Country: Papua New Guinea
Distances: 68.97 km (42.86 miles) S of Panguna,
Source: USGS-RSOE

hisz.rsoe.hu...

Seems like a seperate event, not an aftershock.

Presages a general movement in the area perhaps?

[edit on 5-5-2010 by apacheman]

reply to post by ararisq


Generally speaking, shallower quakes are more dangerous than deep ones.

But which direction is important, too, i.e., lateral movement vs up-and-down movement. Undersea quakes with up-and-down movement generate tsunamis. Lateral ones tend not to.

reply to post by ararisq

Shallow-focus earthquakes are much more common than deep-focus ones, and they are usually larger, which in turn makes them more dangerous.

Source

TSUNAMI BULLETIN NUMBER 001
PACIFIC TSUNAMI WARNING CENTER/NOAA/NWS
ISSUED AT 1639Z 05 MAY 2010

THIS BULLETIN IS FOR ALL AREAS OF THE INDIAN OCEAN.

... TSUNAMI INFORMATION BULLETIN ...

THIS MESSAGE IS FOR INFORMATION ONLY.

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 - 1629Z 05 MAY 2010
COORDINATES - 4.2 SOUTH 101.0 EAST
LOCATION - SOUTHERN SUMATRA INDONESIA
MAGNITUDE - 6.5

EVALUATION

A DESTRUCTIVE WIDESPREAD TSUNAMI THREAT DOES NOT EXIST BASED ON
HISTORICAL EARTHQUAKE AND TSUNAMI DATA.

HOWEVER - THERE IS A VERY SMALL POSSIBILITY OF A LOCAL TSUNAMI
THAT COULD AFFECT COASTS LOCATED USUALLY NO MORE THAN A HUNDRED
KILOMETERS FROM THE EARTHQUAKE EPICENTER. AUTHORITIES IN THE
REGION NEAR THE EPICENTER SHOULD BE MADE AWARE OF THIS
POSSIBILITY.

THIS WILL BE THE ONLY BULLETIN ISSUED BY THE PACIFIC TSUNAMI
WARNING CENTER FOR THIS EVENT UNLESS ADDITIONAL INFORMATION
BECOMES AVAILABLE.

THE JAPAN METEOROLOGICAL AGENCY MAY ISSUE ADDITIONAL INFORMATION
FOR THIS EVENT. IN THE CASE OF CONFLICTING INFORMATION...THE
MORE CONSERVATIVE INFORMATION SHOULD BE USED FOR SAFETY.

hisz.rsoe.hu...#

These appear to be seperate quakes,
Papua is on the very East end of the Archipelago and western Sumatra is on the West side. About 50 degrees of longitude between the two.

PEACE,
RK