Swath Data File: wgom2.0070.0.em1000.mb51 MBIO Data Format ID: 51 Format name: MBF_EMOLDRAW Informal Description: Old Simrad vendor multibeam format Attributes: Simrad EM1000, EM12S, EM12D, and EM121 multibeam sonars, bathymetry, amplitude, and sidescan, 60 beams for EM1000, 81 beams for EM12S/D, 121 beams for EM121, variable pixels, ascii + binary, Simrad. Data Totals: Number of Records: 8186 Bathymetry Data (121 beams): Number of Beams: 990506 Number of Good Beams: 486686 49.14% Number of Zero Beams: 503820 50.86% Number of Flagged Beams: 0 0.00% Amplitude Data (121 beams): Number of Beams: 990506 Number of Good Beams: 486686 49.14% Number of Zero Beams: 503820 50.86% Number of Flagged Beams: 0 0.00% Sidescan Data (1024 pixels): Number of Pixels: 8382464 Number of Good Pixels: 6080297 72.54% Number of Zero Pixels: 0 0.00% Number of Flagged Pixels: 2302167 27.46% Navigation Totals: Total Time: 1.1024 hours Total Track Length: 15.4215 km Average Speed: 13.9886 km/hr ( 7.5614 knots) Start of Data: Time: 06 13 2002 14:16:07.770000 JD164 (2002-06-13T14:16:07.770000) Lon: -92.376081667 Lat: 28.330653333 Depth: 63.6000 meters Speed: 73433035.6550 km/hr (39693532.7865 knots) Heading: 279.9000 degrees Sonar Depth: 0.0300 m Sonar Altitude: 63.4700 m End of Data: Time: 06 13 2002 15:22:16.540000 JD164 (2002-06-13T15:22:16.540000) Lon: -92.532771933 Lat: 28.330019800 Depth: 61.0000 meters Speed: 13.5983 km/hr ( 7.3504 knots) Heading: 262.8000 degrees Sonar Depth: 0.0800 m Sonar Altitude: 60.9200 m Limits: Minimum Longitude: -92.532939711 Maximum Longitude: -92.375884553 Minimum Latitude: 28.313052547 Maximum Latitude: 28.332380640 Minimum Sonar Depth: -0.3600 Maximum Sonar Depth: 0.3100 Minimum Altitude: -0.0800 Maximum Altitude: 76.8300 Minimum Depth: 4.2200 Maximum Depth: 755.9800 Minimum Amplitude: -48.5000 Maximum Amplitude: 0.0000 Minimum Sidescan: -64.0000 Maximum Sidescan: -4.5000 Data Record Type Notices: DN: 8186 MB_DATA_DATA (ID=1): survey data DN: 9012 MB_DATA_NAV (ID=12): Navigation record Nonfatal Error Notices: EN: 9012 MB_ERROR_OTHER (ID=-8): Neither a data record nor a comment record EN: 1 MB_ERROR_NOT_ENOUGH_DATA (ID=-21): Not enough data to perform spline interpolation Problem Notices: PN: 1 DATA PROBLEM (ID=3): Instantaneous speed exceeds 25 km/hr PN: 4 DATA PROBLEM (ID=4): Average speed exceeds 25 km/hr Coverage Mask: CM dimensions: 10 10 CM: 1 1 1 1 1 1 1 1 1 1 CM: 1 1 1 1 1 1 1 1 1 1 CM: 0 0 0 0 0 0 0 0 0 0 CM: 0 0 0 0 0 0 0 0 0 0 CM: 0 0 0 0 0 0 0 0 0 0 CM: 0 0 0 0 0 0 0 0 0 0 CM: 0 0 0 0 0 0 0 0 0 0 CM: 0 0 0 0 0 0 0 0 0 0 CM: 0 0 0 0 0 0 0 0 1 0 CM: 0 0 0 0 0 0 0 0 1 0