Navigation and Zoom &rarr

Earth Topology (Ocean at 2-minute, Land at 30-second)

Sea Level off

NGDC - National Geophysical Data Center
NOAA - National Oceanic & Atmospheric Administration

ETopo2v2 (2006) — Two-minute data grid downloaded, merged, and expanded to thirty-second database at one-meter elevation tolerance. Provides land and ocean data.

GTOPO30 (1996) — Thirty-second data grid downloaded and merged representing elevations at a one-meter tolerance. Data has been modified by source to force lowland coastal areas to have an elevation of one-meter. Source is also void of ocean data.

Both databases merged for complete global coverage with a bias towards higher accuracy. All images generated and copyright protected by John F Gregorek © 2007. Website and navigation tools designed and developed by John F Gregorek; are also copyright protected.

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