Swath Data File: wgom2.0273.0.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: 5148 Bathymetry Data (121 beams): Number of Beams: 622908 Number of Good Beams: 239401 38.43% Number of Zero Beams: 383507 61.57% Number of Flagged Beams: 0 0.00% Amplitude Data (121 beams): Number of Beams: 622908 Number of Good Beams: 239401 38.43% Number of Zero Beams: 383507 61.57% Number of Flagged Beams: 0 0.00% Sidescan Data (1024 pixels): Number of Pixels: 5271552 Number of Good Pixels: 3304354 62.68% Number of Zero Pixels: 0 0.00% Number of Flagged Pixels: 1967198 37.32% Navigation Totals: Total Time: 1.4853 hours Total Track Length: 24.4233 km Average Speed: 16.4429 km/hr ( 8.8880 knots) Start of Data: Time: 06 22 2002 12:10:17.850000 JD173 (2002-06-22T12:10:17.850000) Lon: -93.472463333 Lat: 27.850993179 Depth: 145.6000 meters Speed: 26684740.2767 km/hr (14424183.9333 knots) Heading: 94.6000 degrees Sonar Depth: -0.3700 m Sonar Altitude: 145.6900 m End of Data: Time: 06 22 2002 13:39:25.080000 JD173 (2002-06-22T13:39:25.080000) Lon: -93.224797333 Lat: 27.850723333 Depth: 161.3400 meters Speed: 16.5475 km/hr ( 8.9446 knots) Heading: 93.4000 degrees Sonar Depth: 0.0500 m Sonar Altitude: 161.2900 m Limits: Minimum Longitude: -93.472667950 Maximum Longitude: -93.224503069 Minimum Latitude: 27.846229466 Maximum Latitude: 27.854673662 Minimum Sonar Depth: -1.3600 Maximum Sonar Depth: 1.2400 Minimum Altitude: -0.4700 Maximum Altitude: 298.4000 Minimum Depth: 31.8200 Maximum Depth: 298.6200 Minimum Amplitude: -59.5000 Maximum Amplitude: -2.5000 Minimum Sidescan: -64.0000 Maximum Sidescan: 21.5000 Data Record Type Notices: DN: 5148 MB_DATA_DATA (ID=1): survey data DN: 1 MB_DATA_VELOCITY_PROFILE (ID=6): SVP DN: 11161 MB_DATA_NAV (ID=12): Navigation record Nonfatal Error Notices: EN: 11162 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: 1 DATA PROBLEM (ID=4): Average speed exceeds 25 km/hr Coverage Mask: CM dimensions: 10 10 CM: 0 0 0 0 0 1 1 1 1 1 CM: 1 0 0 0 1 1 1 1 1 1 CM: 1 1 1 1 1 1 1 1 1 1 CM: 1 1 1 1 1 1 1 1 1 1 CM: 1 1 1 1 1 1 1 1 1 1 CM: 1 1 1 1 1 1 1 1 1 1 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 1 0 1 1 1 1 1 CM: 0 0 0 0 0 1 1 1 1 1