Survey Identifier: C1309
Format Acronym: MGD77
Data Center File Number: 01010084
Parameters Surveyed Code: 55533
File Creation Date (yyyymmdd): 19890706
Source Institution: LAMONT-DOHERTY GEOLOGICAL OBSERVATORY
Country: USA
Platform Name: ROBERT D. CONRAD
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): W. LUDWIG
Project: CRUISE 13, LEG 9
Survey Departure Date (yyyymmdd): 19700620
Port of Departure: BALBOA, PANAMA
Survey Arrival Date (yyyymmdd): 19700623
Port of Arrival: CARTAGENA, COLOMBIA
Navigation Instrumentation: SATELLITE
Geodetic Datum/Position: SATELLITE/ DEAD RECKONING
Bathymetry Instrumentation: (SEE ADD DOC / 18)
Additional Forms of Bathymetric Data: ANALOG RECORDS
Magnetics Instrumentation: L-DGO MFG PROTON-PRECESSION
Additional Forms of Magnetics Data: ANALOG RECORDS
Gravity Instrumentation: ANSCHUTZ ELECTRICTABLE, ASKANIA GSS2-6
Additional Forms of Gravity Data: ANALOG RECORDS
Seismic Instrumentation: L-DGO 25CU-IN-AIRGUN,EEL,DRUM RECORDER
Formats of Seismic Data: TWO, 2 CHANNEL SHEET RECORDS
Topmost Latitude of Survey: +11
Bottommost Latitude: +08
Leftmost Longitude: -080
Rightmost Longitude: -075
General Digitizing Rate of Bathymetry: 060
General Sampling Rate of Bathymetry: ONE SECOND
Assumed Sound Velocity: 14630
Bathymetric Datum Code: 00
Interpolation Scheme: NONE
General Digitizing Rate of Magnetics: 24
Reference Field Code: 03
Reference Field: IGRF-65
Method of Applying Residual Field: LINEAR INTERPOLATION BETWEEN TWO NAV PTS
General Digitizing Rate of Gravity: 24
Theoretical Gravity Formula Code: 2
Theoretical Gravity Formula: INTERNAT'L 1930
Reference System Code: 2
Reference System: POTSDAM SYSTEM
Additional Documentation: 06 -3.5 AND 12 KHZ, WIDE BEAM (60 DEG), 1 SECOND SWEEP
Number of Data Records: 1295
Min/Max Data Record:
Date: 1970 06 20
Latitude: +8.69840
Longitude: -79.83670
Bathymetry, 2- Way Traveltime: 000175
Bathymetry, Corrected Depth: 13.0
Magnetics Total Field, 1st Sensor: 372370
Magnetics Residual Field: -07280
Free-Air Anomaly: -0757
Min/Max Data Record:
Date: 1970 06 23
Latitude: +10.33330
Longitude: -75.77000
Bathymetry, 2- Way Traveltime: 043050
Bathymetry, Corrected Depth: 3233.0
Magnetics Total Field, 1st Sensor: 387480
Magnetics Residual Field: +03900
Free-Air Anomaly: +0028