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2007 EM300 and EM3002D Multibeam Sonar Data from Cruise Hi'ialakai HI0702 - Commonwealth of the Northern Mariana Islands

Published by Pacific Islands Benthic Habitat Mapping Center (PIBHMC), Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA) | National Oceanic and Atmospheric Administration, Department of Commerce | Metadata Last Checked: January 27, 2026 | Last Modified: 2007-08-24T00:00:00.000+00:00
EM300 and EM3002D multibeam Data were collected from May 12-22, 2007, aboard NOAA Ship Hi'ialakai at Santa Rosa Reef, Guam Island, Rota Island, Aguijan Island, Tinian Island, and Saipan Island during cruise HI0702. These multibeam data were collected using SAIC ISS-2000 software in the Generic Sensor Format and processed using SABER editing software. Surface sound velocity values were supplied by a Seabird SBE-45 MicroTSG and a SBE-38 remote temperature probe. Sound velocity corrections from a Seabird 911 CTD sensor and motion corrections from a POS-MV vertical reference were applied to the data in real time. Predicted tides were applied to the data in real time. Horizontal accuracy is 20 m (no differential GPS correctors applied), vertical accuracy is depth dependent (~1% of water depth), WGS84 datum. These data are not to be used for navigation. Depths mapped range from ~20-3000 m. Concurrent mapping at Santa Rosa Reef, Guam Island, Rota Island, Tinian Island, and Saipan Island was done by the R/V AHI in water depths ranging from ~10-350m with the data set being AHI0702; (metadata for AHI0702 are submitted separately.)

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