Survey Identifier: WI343731
Format Acronym: MGD77
Data Center File Number: 09780025
Parameters Surveyed Code: 55133
File Creation Date (yyyymmdd): 19800919
Source Institution: US NAVAL OCEANOGRAPHIC OFFICE
Country: USA
Platform Name: USNS WILKES
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): NAVOCEANO CODE 7220
Project: I.O. TRACK 6, TRACK 7
Funding: NAVOCEANO
Survey Departure Date (yyyymmdd): 19770905
Port of Departure: PORT LOUIS, MAURITIUS
Survey Arrival Date (yyyymmdd): 19771030
Port of Arrival: KARACHI, PAKISTAN
Navigation Instrumentation: MX706 SATNAV
Geodetic Datum/Position: PRIM SATELLITE
Bathymetry Instrumentation: HARRIS 853-D-2/3 BEAM 12KHZ 1-SEC SW
Additional Forms of Bathymetric Data: ANALOG
Magnetics Instrumentation: PROTON PRECESSION MAG-GEOMETRICS
Additional Forms of Magnetics Data: ANALOG
Seismic Instrumentation: TELEDYNE 90KJ SPARKER 31-160 HZ 1-CHAN
Formats of Seismic Data: ANALOG
Topmost Latitude of Survey: +00
Bottommost Latitude: -21
Leftmost Longitude: +039
Rightmost Longitude: +074
General Digitizing Rate of Bathymetry: 010
General Sampling Rate of Bathymetry: EVERY 10 SEC
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
Interpolation Scheme: DATA AVERAGED TO OBTAIN 1-MINUTE AVERAGE VALUES
General Digitizing Rate of Magnetics: 010
General Sampling Rate of Magnetics: 10
Magnetic Sensor Tow Distance: 245+
Reference Field Code: 03
Reference Field: IGRF-65
Additional Documentation: 3.5KHZ ANALOG PROFILES COLLECTED-EPO 240 SYSTEM, 10-SEC AND 4-SEC DELAYED SWEEP SEISMIC ANALOG RECORDS, INTERMEDIATE STOP AT DIEGO GARCIA 20-21 OCT 1977 DAYS 293-294, WARNING: ALL OF PORTIONS OF THE MAGNETIC DATA COLLECTED ON THIS LEG ARE, KNOWN TO BE ERRONEOUS, IN PORT 770929-771007 MOMBASA, KENYA
Number of Data Records: 40262
Min/Max Data Record:
Date: 1977 09 05
Latitude: -20.10667
Longitude: +39.85666
Bathymetry, 2- Way Traveltime: 000093
Bathymetry, Corrected Depth: 7.0
Magnetics Total Field, 1st Sensor: 328573
Magnetics Residual Field: -53270
Min/Max Data Record:
Date: 1977 10 22
Latitude: -0.32500
Longitude: +73.99000
Bathymetry, 2- Way Traveltime: 071800
Bathymetry, Corrected Depth: 5419.0
Magnetics Total Field, 1st Sensor: 481057
Magnetics Residual Field: +96750