GIS in Mapping Ocean Floor04/03/2010 |
| Ocean Globe from ESRI Press examines bathymetry from its early history through today's use of geographic information systems (GIS) and other technologies to map the ocean floor. With contributions from oceanographers, explorers, and historians, this new book is a valuable resource for those interested in coastal management, seafloor mapping, and marine biology. |
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Hydrographic Survey of Riverbed Erosion |
Members of the US Geological Survey were filmed while out on the Missouri River at Williston, North Dakota, USA, performing a hydrographic survey to monitor the state of riverbed erosion. They were using a multibeam echo sounder which transmits sound energy and analyses the return signal (echo) that has bounced off the riverbed or other objects. Multibeam sonars emit sound waves from directly beneath a ship's hull to produce fan-shaped coverage of the riverbed.
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The anthology addresses how recent developments in bathymetry and seafloor