Survey Identifier: LY72D


Format Acronym: MGD77
Data Center File Number: 09260015
Parameters Surveyed Code: 55003
File Creation Date (yyyymmdd): 19810604
Source Institution: NAVAL OCEAN RESEARCH AND DEV. ACTIVITY
Country: U.S.A.
Platform Name: USNS LYNCH
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): PENNYEGION,J.,BANCHERO,L.
Survey Departure Date (yyyymmdd): 19720914
Port of Departure: TROMSO
Survey Arrival Date (yyyymmdd): 19720928
Port of Arrival: REYKJAVIK
Navigation Instrumentation: SATELLITE
Geodetic Datum/Position: SATELLITE/DEAD RECONKING
Bathymetry Instrumentation: 3.5 ON 12KHZ FATHOMETER
Additional Forms of Bathymetric Data: ANALOG
Magnetics Instrumentation: PROTON PRECESSION
Additional Forms of Magnetics Data: ANALOG
Topmost Latitude of Survey: +78
Bottommost Latitude: +62
Leftmost Longitude: -027
Rightmost Longitude: +000
General Digitizing Rate of Bathymetry: 90
General Sampling Rate of Bathymetry: 1 SEC SWEEP
Assumed Sound Velocity: 14630
Bathymetric Datum Code: 00
General Digitizing Rate of Magnetics: 20
General Sampling Rate of Magnetics: 03
Magnetic Sensor Tow Distance: 1000
Reference Field Code: 03
Reference Field: IGRF-65
Method of Applying Residual Field: INTERPOLATION BETWEEN NAV POINTS
Number of Data Records: 4545

Min/Max Data Record:
Date: 1972 09 14
Latitude: +62.95960
Longitude: -26.41890
Bathymetry, 2- Way Traveltime: 002501
Bathymetry, Corrected Depth: 188.0
Magnetics Total Field, 1st Sensor: 504750
Magnetics Residual Field: -05639

Min/Max Data Record:
Date: 1972 09 26
Latitude: +77.93390
Longitude: -0.87510
Bathymetry, 2- Way Traveltime: 050299
Bathymetry, Corrected Depth: 3710.0
Magnetics Total Field, 1st Sensor: 535200
Magnetics Residual Field: +14447