Survey Identifier: LY73F
Format Acronym: MGD77
Data Center File Number: 09260020
Parameters Surveyed Code: 55000
File Creation Date (yyyymmdd): 19810609
Source Institution: NAVAL OCEAN RESEARCH AND DEV. ACTIVITY
Country: USA
Platform Name: LYNCH
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): G.L.JOHNSON
Survey Departure Date (yyyymmdd): 19731007
Port of Departure: REYJAVIK ICELAND
Survey Arrival Date (yyyymmdd): 19731020
Port of Arrival: LISBON PORTUGAL
Navigation Instrumentation: SATALLITE
Geodetic Datum/Position: SATELLITE/DEAD RECONKING
Bathymetry Instrumentation: 3.5 OR 12 KHZ FATHOMETER
Additional Forms of Bathymetric Data: ANALOG
Magnetics Instrumentation: PROTON PRECESSION
Additional Forms of Magnetics Data: ANALOG
Topmost Latitude of Survey: +64
Bottommost Latitude: +39
Leftmost Longitude: -042
Rightmost Longitude: -010
General Digitizing Rate of Bathymetry: 15
General Sampling Rate of Bathymetry: 1 SEC SWEEP
Assumed Sound Velocity: 14630
Bathymetric Datum Code: 00
General Digitizing Rate of Magnetics: 41
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: 15591
Min/Max Data Record:
Date: 1973 10 07
Latitude: +39.04430
Longitude: -41.25440
Bathymetry, 2- Way Traveltime: 002126
Bathymetry, Corrected Depth: 159.0
Magnetics Total Field, 1st Sensor: 435290
Magnetics Residual Field: -06167
Min/Max Data Record:
Date: 1973 10 20
Latitude: +63.65170
Longitude: -10.18160
Bathymetry, 2- Way Traveltime: 071052
Bathymetry, Corrected Depth: 5385.0
Magnetics Total Field, 1st Sensor: 540830
Magnetics Residual Field: +11489