HR: 1340h
AN: S53A-1023    [Abstracts]
TI: Derivative-based Sensitivity Analysis for Tsunami Scenario Computations in Support of the German Contribution to the Indonesian Tsunami Early Warning System for the Indian Ocean
AU: * Mentrup, L
EM: lars.mentrup@awi.de
AF: Alfred-Wegener-Institute for Polar and Marine Research, Am Handelshafen 12, Bremerhaven, 27570, Germany
AU: Behrens, J
EM: joern.behrens@awi.de
AF: Alfred-Wegener-Institute for Polar and Marine Research, Am Handelshafen 12, Bremerhaven, 27570, Germany
AU: Harig, S
EM: sven.harig@awi.de
AF: Alfred-Wegener-Institute for Polar and Marine Research, Am Handelshafen 12, Bremerhaven, 27570, Germany
AU: Pranowo, W
EM: widodo.pranowo@awi.de
AF: Alfred-Wegener-Institute for Polar and Marine Research, Am Handelshafen 12, Bremerhaven, 27570, Germany
AU: Schröter, J
EM: jens.schroeter@awi.de
AF: Alfred-Wegener-Institute for Polar and Marine Research, Am Handelshafen 12, Bremerhaven, 27570, Germany
AB: The tsunami in December 2004 set the starting point for the establishment of a German-Indonesian Tsunami Early Warning System (GITEWS). The unstructured grid tsunami propagation and inundation model TsunAWI is under development at Alfred-Wegener-Institute (AWI), Bremerhaven. For either scenario computations as well as the early warning simulation support, input data are not exact but include measurement errors. In order to assess the error bounds of simulation results a rigorous sensitivity analysis has been conducted. Questions are: How sensitive are simulation results on input data like bathymetry and topography? What impact has the inexact determination of the rupture zone to the inundation in coastal areas? We present a derivative-based sensitivity analysis approach to test the relation of perturbed input data to output data.
DE: 0520 Data analysis: algorithms and implementation
DE: 0550 Model verification and validation
DE: 3252 Spatial analysis (0500)
DE: 4255 Numerical modeling (0545, 0560)
DE: 4564 Tsunamis and storm surges
SC: Seismology [S]
MN: 2007 Fall Meeting