Tsunami

Tsunami

Tsunami

Tsunami

Tsunami

Quantifying tsunami risk

submarine slides

submarine slides

1881 Mw=7.9

1941 Mw=8.0

using SRTM digital elevation data and scenario earthquakesPartial text of a NASA sponsored talk given in Bangalore June 2004

View-->notes for narrative

1524,1845Makran

1881

1941

W. coasts of Andaman

& Nicobar Islands repeatedly uplift

by tsunamigenicearthquakes

W. coasts of Andaman

& Nicobar Islands repeatedly uplift

by tsunamigenicearthquakes

Andamanplate

Andamanplate

Next slide showsSRTM evidence

for incremental uplift ofNorth Sentinal Island

zone of coseismic uplift

10 m20 m30 m

Marine terraces suggest a history of great earthquakes

1m1m

Chennai

Tsunami run-up estimates from SRTM data for different tsunami maxima suggest that large

tsunamis may leave a record in coastal swamps

3m3m

Chennai

Tsunami run-up estimates from SRTM data for different tsunami maxima suggest that large

tsunamis may leave a record in coastal swamps

5 m5 m

Chennai

Tsunami run-up estimates from SRTM data for different tsunami maxima suggest that large

tsunamis may leave a record in coastal swamps

7m7m

Chennai

Tsunami run-up estimates from SRTM data for different tsunami maxima suggest that large

tsunamis may leave a record in coastal swamps

9m9m

Chennai

Tsunami run-up estimates from SRTM data for different tsunami maxima suggest that large

tsunamis may leave a record in coastal swamps

Summary: Remote sensing India's earthquakes

1. Monitoring mechanics of earthquakes 2. Quantifying India's earthquake history 3. Quantifying tsunami risk4. Predicting earthquakes not possible but identifying damage within minutes of an earthquake an important application.

-an incomplete600 year history