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Open-File Report 2012-1266

Bathymetric Terrain Model of the Atlantic Margin for Marine Geological Investigations

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By Brian D. Andrews, Jason D. Chaytor, Uri S. ten Brink, Daniel S. Brothers, James V. Gardner, Elizabeth A. Lobecker, and Brian R. Calder

Abstract

A bathymetric terrain model of the Atlantic margin covering almost 725,000 square kilometers of seafloor from the New England Seamounts in the north to the Blake Basin in the south is compiled from existing multibeam bathymetric data for marine geological investigations. Although other terrain models of the same area are extant, they are produced from either satellite-derived bathymetry at coarse resolution (ETOPO1), or use older bathymetric data collected by using a combination of single beam and multibeam sonars (Coastal Relief Model). The new multibeam data used to produce this terrain model have been edited by using hydrographic data processing software to maximize the quality, usability, and cartographic presentation of the combined 100-meter resolution grid. The final grid provides the largest high-resolution, seamless terrain model of the Atlantic margin.

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