GIS MAPS
Base Map
A
base map with extent of 160°E 62°N to 128°W 75°N was built
with information from three different sources:
72°N 160°E to 75°N 128°W: NGDC 5 minute Digital Elevation
Model
62°N 160°E to 72°N 128°W: UCSD
Global sea floor topography data
Landmasses: USGS, Global 30 Arc Second Elevation Data
Set, GTOPO30
Point elevations were
incorporated into the program Topogrid in ArcInfo. A grid was built with cell
size of 1km by 1km.
Click here for enlargement: 
