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Home » Special Events » Magnitude 7.6 earthquake in southern Sumatra, Indonesia
last updated: 09/30/09 09:15.45 (PDT)
On Wednesday September 30 2009 at 3:16 AM (PDT) the USArray seismic network recorded an earthquake (preliminary Mw 7.6) located in southern Sumatra, Indonesia.
Initial source parameters for this tremor are indicated below. The epicentral distance (i.e. distance separating the epicenter and the closest station in the recording network, NEW) for the USArray is 13679 km (122.94 degrees).
If you felt the quake, the USGS would like to know. Please add your comments to the USGS page "Did you feel it?".
Summary
| Solution Parameters | |
|---|---|
| Local Date: | Wednesday September 30, 2009 |
| Local Time: | 3:16 AM PST |
| Universal Time: | 09/30/09 (273) 10:16.11 UTC |
| Magnitude: | 7.6 Mw |
| Latitude: | -0.7890 |
| Longitude: | 99.9610 |
| Depth: | 80 km |
| Author: | USGS NEIC |
| Authoritative: | yes |
Proximity to Population Centers
- 45 km (30 miles) WNW of Padang, Sumatra, Indonesia
- 220 km (135 miles) SW of Pekanbaru, Sumatra, Indonesia
- 475 km (295 miles) SSW of Kuala Lumpur, Malaysia
- 960 km (590 miles) NW of Jakarta, Java, Indonesia
Maps
Mercator projection regional view
The red star denotes the earthquake epicenter. Triangle symbols are active stations at the time of the earthquake in the USArray (excluding ANSS backbone stations and GSN stations, which are represented by a diamond symbol) and colored by network. Gray lines are major rivers.
| Transportable Array (TA) | |
| UC San Diego (AZ) | |
| CalTech (CI) | |
| Uni. Utah (UU) | |
| ANSS backbone stations (US) | |
| Global Seismograph Network (IU) |
Regional satellite view
The red marker denotes the earthquake epicenter.
Detailed terrain view
The red marker denotes the earthquake epicenter.
Waveforms
You may view plots showing this event as recorded by USArray instruments:
- 3 components recorded by NEW, the closest USArray station to the event
- Large 3 components recorded by NEW, the closest USArray station to the event
- Vertical components from every eighth USArray station that recorded the event across the whole network
3 components recorded by NEW, the closest USArray station to the event:
News links
- USGS page for this event
- The New York Times: "Sumatra Earthquake Traps Thousands, Official Says"
- BBC: "Dozens dead in Indonesian quake "
- CNN: "Red Cross: Indonesia quake death toll reaches 75"
Search the internet
To search the internet for more information about this event, click on the button below:
Current seismic activity measured by USArray
Click the links below to observe near real time maps of earthquakes recorded by the USArray deployment:
Further information
Learn more about the Array Network Facility (ANF) component of USArray, the USArray experiment, the EarthScope project, and the Incorporated Research Institutions for Seismology (IRIS).
