Earthquake harazds along the epicentral regiona of the Mw 9.3 Andaman-Aceh earthquake



Pandang, Sumatra.

The The great Aceh-Andaman earthquake of December 2004 an unprecedented opportunity to learn more about great subduction zone earthquakes while at the same time this event provided a sobering reminder of the social and economic cost of such earthquakes. Over 230,000 fatalities and billions of dollars of damage repair and replacement income amply demonstrate the socio-economic importance of better understanding such earthquakes.

The 2004 Andaman-Aceh earthquake and tsunami focused global attention on the northernmost part of the Sumatran subduction zone and raised questions about the past geologic history of the Sunda megathrust offshore of northernmost Sumatra.

During the summer of 2007, we began our reconnaissance paleoseismic investigations along the northernmost part of the Sumatran subduction zone, western Sumatra. The objective of our field studies is chronicle the long-term seismic behavior of the Sunda megathrust that integrates paleoseismology, geodesy, geochronology and paleoenvironmental reconstruction using microfossils.

Our work is supported by the National Science Foundation