Survey Identifier: LY72C


Format Acronym: MGD77
Data Center File Number: 09260014
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): JOHONSON,G.L. , BANCHERO,L.
Survey Departure Date (yyyymmdd): 19720808
Port of Departure: REYKJAVIK
Survey Arrival Date (yyyymmdd): 19720821
Port of Arrival: TROMSO
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: +79
Bottommost Latitude: +62
Leftmost Longitude: -027
Rightmost Longitude: +018
General Digitizing Rate of Bathymetry: 66
General Sampling Rate of Bathymetry: 1 SEC SWEEP
Assumed Sound Velocity: 14630
Bathymetric Datum Code: 00
General Digitizing Rate of Magnetics: 15
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: 10953

Min/Max Data Record:
Date: 1972 08 08
Latitude: +62.82720
Longitude: -26.73930
Bathymetry, 2- Way Traveltime: 000499
Bathymetry, Corrected Depth: 37.0
Magnetics Total Field, 1st Sensor: 502510
Magnetics Residual Field: -17694

Min/Max Data Record:
Date: 1972 08 21
Latitude: +78.01680
Longitude: +17.02760
Bathymetry, 2- Way Traveltime: 047724
Bathymetry, Corrected Depth: 3517.0
Magnetics Total Field, 1st Sensor: 557230
Magnetics Residual Field: +28266