Ocean Mapping Group (OMG)20112011 Multibeam Sonar Data collected from the CCGS AmundsenOMG Merged Files, ESRI Grids and ImagesFredericton, New Brunswick, CanadaOcean Mapping Group, University of New Brunswickhttp://www.omg.unb.ca/Projects/Arctic/index.htmlOcean Mapping Group binary format data generated from the 2011 multibeam sonar survey on the 2011 CCGS Amundsen ArcticNet Cruise. The data include high-resolution bathymetry, acoustic backscatter and watercolumn backscatter.Multibeam Surveys were carried out as part of the Ocean Mapping Group role in the ArcticNet program.Information for Ocean Mapping Group activities are online at http://omg.unb.ca2011071920111101NULLAs needed-137-557746NULLMultibeamMapsBathymetryBackscatterHydrographyOcean Mapping GroupAcousticNULLArcticCanadaQuebecLabradorBeaufort SeaNorth West PassagePublicNot to be used for navigationOcean Mapping GroupJohn Hughes ClarkeChair in Ocean Mappingmailing and physical addressDepartment of Geodesy and Geomatics Engineering University of New Brunswick 15 Dineen Drive P.O. Box 4400FrederictonNew BrunswickE3B 5A3Canada506-453-4568506-453 4943jhc@omg.unb.cahttp://www.omg.unb.ca/Projects/Arctic/google/index.htmlGoogle Maps Interface of the Amundsen Multibeam DataTiled Google MapsAll sounding data was inspected in real-time and in post-processing and then all overlapping data was checked to ensure reliability.NULLData is collected 24 hours a day during the entire cruise. Data gaps may exist when the ship was on station as data is only collected while the ship is moving.1.0 meter (95% confidence) from CNav RTG GPSTidal accuracy estimated at 0.3 m (95% confidence) from Arctic9 tidal modelMultibeam bathymetry, watercolumn and backscatter data were collected using a Kongsberg Simrad EM302 multibeam sonar system. Standard collection settings used dual-ping, FM pulse, auto depth mode, angular coverage of +/- 60 degrees and highdensity equidistant beamforming. SIS was used to collect the data, while near realtime cleaning of data outliers was done using the Ocean Mapping Group's Swathed toolkit after conversion to OMG binary format. IMU data was parsed by the SIS software from a POSMv 320 v.4. RTG GPS data from the CNav GPS was used to correct and improve the position output from the POSMv. Soundspeed information was either from CTD Rossette casts, MVP300 data or the simulated from the World Ocean Atlas 2001 database.POSMv Firmware Version: 4SIS Version: 3.8.3, Build 89, DBVersion 19.0; Installed July, 2011EM302 PU Version:CNav Unit: 2000WaterColumn Settings: x_log_offset = 2020120101James MuggahOcean Mapping Group (OMG)Research Assistantmailing and physical addressDepartment of Geodesy and Geomatics Engineering University of New Brunswick 15 Dineen Drive P.O. Box 4400FrederictonNew BrunswickE3B 5A3Canada506-453-5146jmuggah@unb.ca- Multibeam Data was converted from the Kongsberg binary format to the Ocean Mapping Group binary format. - Primary navigation was set as the POSMv output position.- The Attitude information was merged with the sounding data.- The Navigation data was merged with the sounding data- Tides were applied using predicted tides from the Arctic9 tide model data. Depths are referenced to MSL.- Backscatter data was generated- Watercolumn data was extracted from the Kongsberg binary wcd format20120101James MuggahOcean Mapping Group (OMG)Research Assistantmailing and physical addressDepartment of Geodesy and Geomatics Engineering University of New Brunswick 15 Dineen Drive P.O. Box 4400FrederictonNew BrunswickE3B 5A3Canada506-453-5146jmuggah@unb.ca- The sounding data was re-raytraced using collected CTD profiles and sound speed profiles generated from the World Ocean Atlas 2001 database. Sound Speed Processing was completed using the soundscape software package. - The data was checked for integrity to ensure that previous processing steps were not missed. - The bathymetry and backscatter data was gridded into our 15'x30' basemap series. (http://www.omg.unb.ca/Projects/Arctic/basemaps/index.html)- The bathymetry, backscatter and sub-bottom data was to generate the stripmap map series. (http://www.omg.unb.ca/Projects/Arctic/stripmaps/index.html)- The bathymetry and backscatter basemap tiles were used to generate the google map tiles. (http://www.omg.unb.ca/Projects/Arctic/google/index.html)20120101James MuggahOcean Mapping Group (OMG)Research Assistantmailing and physical addressDepartment of Geodesy and Geomatics Engineering University of New Brunswick 15 Dineen Drive P.O. Box 4400FrederictonNew BrunswickE3B 5A3Canada506-453-5146jmuggah@unb.ca0.000010.00001Decimal degreesWGS84 (G1150)WGS846378137.00 meters298.257 223 563Ocean Mapping Group (OMG)mailing and physical addressDepartment of Geodesy and Geomatics Engineering University of New Brunswick 15 Dineen Drive P.O. Box 4400FrederictonNBE3B 5A3Canada506-453-4568Research programs, the Ocean Mapping Group, or ArcticNet take no liability for the use or transmission of this dataESRI Grid and Imagehttp://omg.unb.caNone2011090320110929James MuggahOcean Mapping Group (OMG)Research Assistantmailing and physical addressDepartment of Geodesy and Geomatics Engineering University of New Brunswick 15 Dineen Drive P.O. Box 4400FrederictonNBE3B 5A3Canada(506) 453-5146jmuggah@unb.caFGDC Content Standards for Digital Geospatial MetadataFGDC-STD-001-1998universal time