Study of the Tsunami
Helene HEBERT : helene.hebert@cea.fr
(Laboratoire de Détection Géophysique, CEA, Paris, France)

- The tsunami modeling was carried out with the following (preliminary)
parameters:
Seismic moment 1.3 10^21 Nm
Fault dimensions: 240x100 km^2
Strike, dip, rake : 259°, 28°, 59°
- The hydrodynamic equations are solved using a finite difference method, with a bathymetric grid 
describing the Pacific Ocean (grid cell ~ 9 km). The rectangle displayed on the animation and on 
the hmax figure shows the area of the Marquesas Islands where tsunami amplification are
usually the most important in French Polynesia.
- Further modeling is required in this region to explain the tide gauge records in Hiva Oa 
(~ 4 cm peak-to-through) and in Nuku Hiva (~12 cm) for the Hokkaido 2003 tsunami.

Several recent references about the tsunamis in French Polynesia:
- Guibourg, S., P. Heinrich and R. Roche, Numerical modeling of the 1995 Chilean tsunami.
 Impact on French Polynesia, Geophysical Research Letters, 24, 775-778, 1997.
- Heinrich, P., F. Schindelé, S. Guibourg and P.F. Ihmlé, Modeling of the February 1996 Peruvian tsunami, 
Geophysical Research Letters, 25, 2687-2690, 1998.
- Hébert, H., P. Heinrich, F. Schindelé, and A. Piatanesi, Far-field simulation of tsunami propagation
 in the Pacific Ocean: impact on the Marquesas Islands (French Polynesia), Journal of Geophysical Research,
106, C5, 9161-9278, 2001.

GIF animation of the tsunami
MPEG animation of the tsunami
Maximum water height after 13 hours