Extended Drill Case Range01/03/2010 |
| Barum and Dewar's extended range of drill cases will be on display at their stand P350 at Oceanology International 2010. The cases are the 1740 Case, internal dimensions 1059 * 345 * 302mm, and the 1770 Case, measuring 1386 * 407 * 216mm. |
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Supplier: Barum and Dewar More news from this supplier: Water-Tight Cases Barum & Dewar appoints UK Sales Manager Offshore Survey Frame Agreement ROV Survey of the Costa Concordia Grounding Site (video) 44 PMGS Transponders for Earthquake and Tsunami Research Underwater Vision to Fugro Subsea Services Award for Brazilian Hydrographic Paper Demonstrating a 'Deeper Understanding' First Real-Time Seafloor Earthquake Observatory Theme of Hydrography Day 2012: International Cooperation Finistère and Mediterranean Bathymetric Lidar Surveys Precise Positioning For BP Vessels 
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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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