Funded in part by
NSF grant 0538333

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Six short-period seismic stations have been installed on Sumatra in order to better determine the locations of aftershocks of the Dec 26, 2004 and Mar 28, 2005 great earthquakes in the Sunda Trench.  The sites are located as indicated in following table and figure. Each site has an L4 1-Hz vertical seismometer recorded by a Nanometerics Taurus 24-bit logger.  The data are recorded on site and are retrieved at regular intervals up to 3 months apart. The instruments were installed starting May 20, 2005, co-located with GPS stations of the SuGAr array.

Link to data

Site names and locations

Code
Latitude (degrees)
Longitude (degrees)
Site

ABGS

0.22082

99.38749

Air Bangis

NGNG

-1.7995

99.26829

NyangNyang

PBAI

-0.03164

98.52622

Pulau Bais

PSKI

-1.12473

100.35339

Pulau Sikuai

SLBU

-2.76634

100.00967

Silabu

LHWA

1.39688

97.17194

Lahewa, Nias

The following people helped install this network.

Danny Hidayat, Penn State University
Danny Natawidjaja, LIPI/Caltech
Bambang Suwargadi, LIPI
Dudi Prayudi, LIPI
Imam Suprihanto, LIPI
John Galetzka, Caltech
Kerry Sieh, Caltech
Rob Clayton, Caltech
Rich Briggs, Caltech
Aron Meltzner, Caltech


Air Bangis station - enlarge image

Silabu station with village people clustered around.
enlarge image

Silabu village with the station in the middle of the dirt area; blue-roofed church at right.
enlarge image
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© 2004 Tectonics Observatory and the California Institute of Technology