Survey Identifier: LY73G
Format Acronym: MGD77
Data Center File Number: 09260022
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): J.A.BA LARD
Survey Departure Date (yyyymmdd): 19731108
Port of Departure: ROTA
Survey Arrival Date (yyyymmdd): 19731130
Port of Arrival: TERICERA
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: +38
Bottommost Latitude: +22
Leftmost Longitude: -030
Rightmost Longitude: -006
General Digitizing Rate of Bathymetry: 35
General Sampling Rate of Bathymetry: 1 SEC SWEEP
Assumed Sound Velocity: 14630
Bathymetric Datum Code: 00
General Digitizing Rate of Magnetics: 31
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: 15237
Min/Max Data Record:
Date: 1973 11 08
Latitude: +22.92180
Longitude: -29.03500
Bathymetry, 2- Way Traveltime: 006900
Bathymetry, Corrected Depth: 520.0
Magnetics Total Field, 1st Sensor: 364940
Magnetics Residual Field: -13547
Min/Max Data Record:
Date: 1973 11 29
Latitude: +37.51460
Longitude: -6.75780
Bathymetry, 2- Way Traveltime: 074875
Bathymetry, Corrected Depth: 5681.0
Magnetics Total Field, 1st Sensor: 448960
Magnetics Residual Field: +09758