Sonar of ocean floor off Louisiana, USA

Sonar of ocean floor off Louisiana, USA

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This image is part of the feature Animal Super Senses
This image is part of the feature Sea Floor Images

Credit: W.HAXBY, LAMONT-DOHERTY EARTH OBSERVATORY/SCIENCE PHOTO LIBRARY

Caption: Sea floor off Louisiana. High-definition coloured sonar image of the continental shelf off the Louisiana coast, USA. This most detailed mapping of the Gulf of Mexico ocean floor off the North American coast was made by ships recording sound echos from the ocean bottom. Colours show depths of the ocean floor: white (near sea level), orange (1000 metres), yellow (2000 m), blue (3000 m). On this continental shelf sediments have been deposited by the Mississippi river. Buried salt and its movement beneath these sediments creates a pock-marked landscape that resembles the moon. The salt arose from evaporation in the Gulf of Mexico.

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Keywords: american, continent, continental, continental shelf, continental shf, continents, gulf of mexico, louisiana, margin, margins, n. america, n.america, north america, ocean floor, sea floor, seafloor, shelf, submarine mountains, united states, usa

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