Survey Identifier: LY72B
Format Acronym: MGD77
Data Center File Number: 09260013
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): JOHNSON,G.L.
Survey Departure Date (yyyymmdd): 19720725
Port of Departure: REYKJAVIK
Survey Arrival Date (yyyymmdd): 19720804
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: +66
Bottommost Latitude: +60
Leftmost Longitude: -042
Rightmost Longitude: -020
General Digitizing Rate of Bathymetry: 59
General Sampling Rate of Bathymetry: 1 SEC SWEEP
Assumed Sound Velocity: 14630
Bathymetric Datum Code: 00
General Digitizing Rate of Magnetics: 28
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: 7583
Min/Max Data Record:
Date: 1972 07 25
Latitude: +60.78530
Longitude: -80.26060
Bathymetry, 2- Way Traveltime: 000351
Bathymetry, Corrected Depth: 26.0
Magnetics Total Field, 1st Sensor: 511410
Magnetics Residual Field: -95421
Min/Max Data Record:
Date: 1972 08 04
Latitude: +65.51840
Longitude: -20.52010
Bathymetry, 2- Way Traveltime: 039526
Bathymetry, Corrected Depth: 2942.0
Magnetics Total Field, 1st Sensor: 543810
Magnetics Residual Field: +26067