Project Description
Six short-period seismic stations were installed in Sumatra in May 2005 to better determine the locations of aftershocks of the December 26, 2004 and March 28, 2005 great earthquakes in the Sunda Trench. Each site, co-located with GPS stations of the SuGAr array, has an L4 1-Hz verticle seismometer recorded by a Nanometrics Taurus 24-bit logger. The data are continuously recorded on site and are retrieved every 3 to 5 months.

Preliminary analysis of the data is done using the software program SEISAN, and initial results indicate a far greater level of seismicity in the region than reported by the NEIC and other agencies, especially in the area around Nyang Nyang.

Available Data
Click here for station location, here for figure indicating data availability for each station, and here for information regarding when data was retrieved from each station along with the time span the data covers. Click here for sample waveforms and here for information regarding station data quality.

Results
Click here for information regarding earthquake locations, cross-sections, and station coverage.

Meetings, Publications, etc.
AGU 2006 Poster
AGU 2006 Abstract
TO 2006 Meeting Poster
TO 2006 Progress Report

Links
TO Sumatra Plate Boundary Project
National Earthquake Information Center (NEIC)
Earthquake Search (NEIC)

Contact information
Natalia Deligne
email: