Survey Identifier: LY71C
Format Acronym: MGD77
Data Center File Number: 09260008
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): 19710609
Port of Departure: REYKJAVIK
Survey Arrival Date (yyyymmdd): 19710630
Port of Arrival: ST JOHNS
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: +65
Bottommost Latitude: +51
Leftmost Longitude: -052
Rightmost Longitude: -023
General Digitizing Rate of Bathymetry: 83
General Sampling Rate of Bathymetry: 1 SEC SWEEP
Assumed Sound Velocity: 14630
Bathymetric Datum Code: 00
General Digitizing Rate of Magnetics: 96
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: 4718
Min/Max Data Record:
Date: 1971 06 09
Latitude: +51.05550
Longitude: -51.78430
Bathymetry, 2- Way Traveltime: 000027
Bathymetry, Corrected Depth: 2.0
Magnetics Total Field, 1st Sensor: 217300
Magnetics Residual Field: -09522
Min/Max Data Record:
Date: 1971 06 29
Latitude: +64.45540
Longitude: -23.07360
Bathymetry, 2- Way Traveltime: 052500
Bathymetry, Corrected Depth: 3930.0
Magnetics Total Field, 1st Sensor: 559850
Magnetics Residual Field: +14309