Swath Data File: wgom2.0324.0.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: 2139 Bathymetry Data (121 beams): Number of Beams: 258819 Number of Good Beams: 126386 48.83% Number of Zero Beams: 132433 51.17% Number of Flagged Beams: 0 0.00% Amplitude Data (121 beams): Number of Beams: 258819 Number of Good Beams: 126386 48.83% Number of Zero Beams: 132433 51.17% Number of Flagged Beams: 0 0.00% Sidescan Data (1024 pixels): Number of Pixels: 2190336 Number of Good Pixels: 1593952 72.77% Number of Zero Pixels: 0 0.00% Number of Flagged Pixels: 596384 27.23% Navigation Totals: Total Time: 0.2883 hours Total Track Length: 4.7135 km Average Speed: 16.3497 km/hr ( 8.8377 knots) Start of Data: Time: 06 24 2002 14:23:24.820000 JD175 (2002-06-24T14:23:24.820000) Lon: -93.270160000 Lat: 27.894365000 Depth: 93.3200 meters Speed: 59122139.7488 km/hr (31957913.3778 knots) Heading: 268.1000 degrees Sonar Depth: -0.0400 m Sonar Altitude: 93.6000 m End of Data: Time: 06 24 2002 14:40:42.670000 JD175 (2002-06-24T14:40:42.670000) Lon: -93.317769600 Lat: 27.894043333 Depth: 84.3200 meters Speed: 15.7246 km/hr ( 8.4998 knots) Heading: 269.3000 degrees Sonar Depth: -0.1300 m Sonar Altitude: 84.4500 m Limits: Minimum Longitude: -93.317824647 Maximum Longitude: -93.270150974 Minimum Latitude: 27.892353328 Maximum Latitude: 27.895788120 Minimum Sonar Depth: -0.2000 Maximum Sonar Depth: 0.2500 Minimum Altitude: -0.0900 Maximum Altitude: 93.6000 Minimum Depth: 37.7000 Maximum Depth: 96.3000 Minimum Amplitude: -59.5000 Maximum Amplitude: -3.5000 Minimum Sidescan: -64.0000 Maximum Sidescan: -1.0000 Data Record Type Notices: DN: 2139 MB_DATA_DATA (ID=1): survey data DN: 1 MB_DATA_VELOCITY_PROFILE (ID=6): SVP DN: 2282 MB_DATA_NAV (ID=12): Navigation record Nonfatal Error Notices: EN: 2283 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: 1 0 1 1 0 0 0 0 0 1 CM: 1 1 1 1 1 1 1 1 0 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: 1 1 0 0 0 0 0 1 1 1 CM: 1 0 0 0 0 0 0 0 0 1