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IUGG XXIV General Assembly July 2-13, 2007 Perugia, Italy<br />

(S) - <strong>IASPEI</strong> - International Association of Seismology and Physics of the Earth's<br />

Interior<br />

JSS002 Poster presentation 1808<br />

Comprehensive analysis of the bathymetric data for the North Pacific<br />

Dr. Andrey Marchuk<br />

International Tsunami Commission Member of the International Tsunami Commission <strong>IASPEI</strong><br />

Anatoly Bezhaev<br />

Gridded digital bathymetry is widely used for numerical modeling of tsunami generation, propagation<br />

and run-up. The quality of these data is of great importance for reliability of the results of numerical<br />

simulation of tsunami. At present time tsunami investigators mainly use segments of the global Smith-<br />

Sandwell and GEBCO digital gridded bathymetry. The comparison of these data, bathymetric and<br />

navigation charts for the Aleutian-Alaska region discover some significant data mismatches. The user<br />

interface for gridded, vector and raster bathymetric data comparison was created. Using this interface<br />

make it possible to find areas with insufficient density of existing digital data and to choose data for<br />

digitizing and for further creating the new gridded bathymetry.<br />

Keywords: digital, bathymerty

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