Survey Identifier: LY70D


Format Acronym: MGD77
Data Center File Number: 09260004
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): PENNYLEGION,J.
Survey Departure Date (yyyymmdd): 19700604
Port of Departure: ROTA,SPAIN
Survey Arrival Date (yyyymmdd): 19700629
Port of Arrival: CHARLESTON
Navigation Instrumentation: SATELLITE
Geodetic Datum/Position: SATELLITE/DEAD RECONKING
Bathymetry Instrumentation: 3.5 ON 12 KHZ FATHOMETER
Additional Forms of Bathymetric Data: ANALOG
Magnetics Instrumentation: PROTON PRECESSION
Additional Forms of Magnetics Data: ANALOG
Topmost Latitude of Survey: +37
Bottommost Latitude: +24
Leftmost Longitude: -079
Rightmost Longitude: -008
General Digitizing Rate of Bathymetry: 40
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: 16213

Min/Max Data Record:
Date: 1970 06 04
Latitude: +24.53340
Longitude: -78.25950
Bathymetry, 2- Way Traveltime: 000029
Bathymetry, Corrected Depth: 2.0
Magnetics Total Field, 1st Sensor: 418340
Magnetics Residual Field: -05377

Min/Max Data Record:
Date: 1970 06 29
Latitude: +36.39530
Longitude: -8.14800
Bathymetry, 2- Way Traveltime: 084827
Bathymetry, Corrected Depth: 6460.0
Magnetics Total Field, 1st Sensor: 518500
Magnetics Residual Field: +07395