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Acoustic estimates of methane gas flux from the seabed in a 6000 km2 region in the Northern Gulf of Mexico
Seeps of free methane gas escaping the seabed can be found throughout the ocean basins. To understand the role of methane gas seeps in the global carbon cycle—including both gas added to theExpand
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An airborne synthetic aperture radar (SAR) experiment to support RADARSAT-2 ground moving target indication (GMTI)
As part of the preparatory work for the RADARSAT-2 moving object detection experiment (MODEX special operating mode), an airborne experiment was conducted at Canadian Forces Base Petawawa in JulyExpand
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So, How Deep Is the Mariana Trench?
HMS Challenger made the first sounding of Challenger Deep in 1875 of 8184 m. Many have since claimed depths deeper than Challenger's 8184 m, but few have provided details of how the determination wasExpand
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Geometric and Radiometric Correction of Multibeam Backscatter Derived from Reson 8101 Systems
A common by-product of multibeam surveys is a measure of the backscattered acoustic intensity from the seafloor. These data are of immense interest to geologists and geoscientists since maps of theExpand
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A detailed seabed signature from Hurricane Sandy revealed in bedforms and scour
[1] On 30 October 2012, Hurricane Sandy made landfall near Brigantine New Jersey bringing widespread erosion and damage to the coastline. We have obtained a unique set of high-resolution before andExpand
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Ice keel seabed features in marine channels of the central Canadian Arctic Archipelago: evidence for former ice streams and iceberg scouring
Abstract The study area lies within the central part of the Canadian Arctic Archipelago; a region that was covered by the Laurentide Ice Sheet during the Late Wisconsinan glaciation and earlier.Expand
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Setting the stage for multi-spectral acoustic backscatter research
The establishment of multibeam echosounders (MBES) as a mainstream tool in ocean mapping has facilitated integrative approaches towards nautical charting, benthic habitat mapping, and seafloorExpand
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Global Shoreline Mapping from an Airborne Polarimetric SAR: Assessment for RADARSAT 2 Polarimetric Modes
Abstract : A project between two agencies, DREO and NIMA was initiated in 1998 to study shoreline extraction from imagery. DREO researched SAR applications with an emphasis on Radarsat products. TheExpand
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Multispectral Multibeam Echo Sounder Backscatter as a Tool for Improved Seafloor Characterization
The establishment of multibeam echosounders (MBES), as a mainstream tool in ocean mapping, has facilitated integrative approaches towards nautical charting, benthic habitat mapping, and seafloorExpand
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Application of Surface Sound Speed Measurements in Post-processing for Multi-Sector Multibeam Echosounders
Given sufficient data from ancillary sensors, swath sonar systems can generate sounding solutions in real time. The absolute accuracy o f these solutions depends both on the sonar-relative range andExpand
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