Tsunami Quantifying tsunami risk submarine slides submarine slides 1881 Mw=7.9 1941 Mw=8.0 using SRTM digital elevation data and scenario earthquakes Partial.

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Presentation transcript:

Tsunami Quantifying tsunami risk submarine slides submarine slides 1881 Mw= Mw=8.0 using SRTM digital elevation data and scenario earthquakes Partial text of a NASA sponsored talk given in Bangalore June 2004 View-->notes for narrative 1524,1845 Makran

W. coasts of Andaman & Nicobar Islands repeatedly uplift by tsunamigenic earthquakes W. coasts of Andaman & Nicobar Islands repeatedly uplift by tsunamigenic earthquakes Andaman plate Andaman plate Next slide shows SRTM evidence for incremental uplift of North Sentinal Island zone of coseismic uplift

10 m 20 m 30 m Marine terraces suggest a history of great earthquakes

1m Chennai Tsunami run-up estimates from SRTM data for different tsunami maxima suggest that large tsunamis may leave a record in coastal swamps

3m Chennai Tsunami run-up estimates from SRTM data for different tsunami maxima suggest that large tsunamis may leave a record in coastal swamps

5 m Chennai Tsunami run-up estimates from SRTM data for different tsunami maxima suggest that large tsunamis may leave a record in coastal swamps

7m Chennai Tsunami run-up estimates from SRTM data for different tsunami maxima suggest that large tsunamis may leave a record in coastal swamps

9m 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 risk 4. Predicting earthquakes not possible but identifying damage within minutes of an earthquake an important application.

-an incomplete 600 year history