Below is a map showing the topography and bathymetry of southern South America.
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There are several world maps that show bathymetry out on the internets available for download.
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This first one is a map showing the bathymetry and location of the seismic surveys.
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The maps cover both bathymetry -or the shape of the ocean floor -along with the continent's tectonic origins.
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Okay, so this week's Seafloor Sunday isn't really the sea, but it is some great bathymetry data so I'm going to show it anyway.
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The image below is from this website describing a research cruise in 2008-2009 that acquired multibeam bathymetry data and cores.
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Below are excerpts from an article discussing the upcoming addition to GoogleEarth -adding higher resolution bathymetry data (you can read the whole article here).