Abstract

Sitka Alaska Coastal DEM Development for Tsunami Inundation Modeling/Mapping
Track: Disaster and Emergency Management
Authors: Peter Hickman

The Alaska Earthquake Information Center (AEIC) and the Geographic Information Network of Alaska (GINA), with the assistance of the National Geophysical Data Center (NGDC), have developed an 8/15 arc-second horizontal resolution seamless bathymetric-topographic digital elevation model (DEM) centered on Sitka Harbor and the City of Sitka, Alaska. This DEM has been developed to support the ongoing AEIC project "Tsunami Inundation Mapping of Alaska Coastal Communities. The DEM has been designed to fit within a nested hierarchy of similar DEMs of larger spatial extent but coarser resolution. The grid was assembled from a wide variety of bathymetric and topographic data sources. This presentation summarizes the data sources and the methods used to integrate these data into the single DEM.