Survey Identifier: M25-4
Format Acronym: MGD77
Data Center File Number: 83050029
Parameters Surveyed Code: 50000
File Creation Date (yyyymmdd): 19971024
Source Institution: Bundesamt Seeschiffahrt HydrographieBSH
Country: Germany
Platform Name: R/V Meteor
Platform Type Code: 1
Platform Type: SHIP
Survey Departure Date (yyyymmdd): 19930723
Survey Arrival Date (yyyymmdd): 19930820
Navigation Instrumentation: GPS (INS)
Geodetic Datum/Position: Transit satellite navigation
Bathymetry Instrumentation: Atlas Hydrosweep DS
Topmost Latitude of Survey: +40
Bottommost Latitude: +33
Leftmost Longitude: +014
Rightmost Longitude: +026
General Digitizing Rate of Bathymetry: 010
General Sampling Rate of Bathymetry: VAR W/ DEPTH
Interpolation Scheme: 1 MINUTE EXTRACTIONS CLOSEST TO THE MINUTE (VERTICAL BM)
Additional Documentation: Atlas Hydrosweep DS is a hydrographic "multi-beam echosounder" which provides, measurements of depths, signal strengths, and a "mean velocity of sound in, water" by 59 performed beams (PFBs) which cover a sector of 90 degrees below, the ship. In the "survey mode" the fan of PFBs is oriented across the ship's, axis, in the "calibration mode" it is oriented along the ship's axis. MBSystem's (LDEO) mbcopy command was used to convert the raw format to a URI, VAX byte order format from which the vertical beam was then extracted.
Number of Data Records: 28249
Min/Max Data Record:
Date: 1993 07 23
Latitude: +33.20898
Longitude: +14.62050
Bathymetry, Corrected Depth: 640.0
Min/Max Data Record:
Date: 1993 08 20
Latitude: +39.26938
Longitude: +25.11488
Bathymetry, Corrected Depth: 4690.0