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Home » Special Events » Magnitude 7.9 earthquake near Eastern Sichuan, China
last updated: 05/12/08 23:34.17 (PDT)
On Sunday May 11 2008 at 11:28 PM (PDT) the USArray seismic network recorded an earthquake (preliminary Mw 7.9) located near Eastern Sichuan, China.
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, A05A) for the USArray is 10070 km (90.58 degrees).
If you felt the quake, the USGS would like to know. Please add your comments to the USGS page "Did you feel it?".
Location Maps
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, which are represented by a diamond symbol) and colored by network. Gray lines are major rivers.
Global View:
Regional View:
| Transportable Array (TA) | |
| UC San Diego (AZ) | |
| CalTech (CI) | |
| UN Reno (NN) | |
| Uni. Utah (UU) | |
| ANSS backbone stations (US) |
Solution Parameters
| Solution Parameters | |
|---|---|
| Local Date: | Sunday May 11, 2008 |
| Local Time: | 11:28 PM PST |
| Universal Time: | 05/12/08 (133) 06:28.01 UTC |
| Magnitude: | 7.9 Mw |
| Latitude: | 31.021 |
| Longitude: | 103.367 |
| Depth: | 10 km |
| Author: | QED |
| Authoritative: | yes |
Waveforms
You may view plots showing this event as recorded by USArray instruments:
- Vertical components from every USArray station that recorded the event across the whole network, from the closest station to the furthest station (Network code_Station code):
- 1 (TA_A05A) – 50 (TA_D12A)
- 51 (TA_G08A) – 100 (TA_H13A)
- 101 (US_BOZ) – 150 (TA_N12A)
- 151 (TA_L15A) – 200 (TA_O17A)
- 201 (TA_Q14A) – 250 (CI_GSC)
- 251 (TA_U12A) – 300 (TA_X13A)
- 301 (TA_T19A) – 350 (TA_Y19A)
- 351 (TA_Z17A) – 400 (TA_125A)
- 401 (TA_224A) – 420 (TA_627A)
- 3 components recorded by the closest USArray station to the event
- 3 components recorded by the closest USArray station to the event (large)
Proximity to Population Centers
- 98 km (61 miles) NW (305°) of Chengdu, Sichuan, China
- 146 km (90 miles) WSW (257°) of Mianyang, Sichuan, China
- 177 km (110 miles) NNW (346°) of Leshan, Sichuan, China
- 1153 km (716 miles) NNW (347°) of Hanoi, Vietnam
News Links
- USGS page for this event
- Times Online: "China quake: at least 10,000 dead, but 10,000 more are buried"
- LA Times: "Death toll in China quake put at 10,000"
- Bloomberg: "Chinese Rescuers Struggle to Reach Areas Hit by Quake (Update1)"
- BBC: "'Hundreds buried' by China quake"
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).
