Marine Geophysics Viewer

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	All Parameters
	Bathymetry
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Geophysical parameters collected:

For more information about Marine Geophysical Trackline Data at NGDC, see http://ngdc.noaa.gov/mgg/geodas/trackline.html.

Basemap and reference layers:

GEBCO_08 (30 arc-second grid) shaded-relief map
ETOPO1 Global Relief Model (1 arc-minute grid) shaded-relief map
Simple background: GSHHS version 2.0 (Global Self-consistent, Hierarchical, High-resolution Shoreline Database)
Imagery: ESRI World Imagery
National Geographic: ESRI/National Geographic Basemap
Ocean: ESRI Ocean Basemap
Boundaries/Labels:

World Maritime Boundaries: VLIZ Maritime Boundaries Geodatabase (version 5.0, 2009)
U.S. Exclusive Economic Zone: NOAA Office of Coast Survey
World City Locations: ESRI Data and Maps DVDs
Geographic/marine region labels, country boundaries, state/province boundaries, rivers, lakes: Natural Earth Data

Map projection:WGS84 Web Mercator (Auxiliary Sphere); EPSG:3857.

Disclaimer: All international boundaries, maritime boundaries, and placenames are shown for general orientation and reference only; they do not necessarily represent official U.S. policy.

Version: 1.2, last updated Jan. 2012