Survey Identifier: C0904
Format Acronym: MGD77
Data Center File Number: 01010022
Parameters Surveyed Code: 55533
File Creation Date (yyyymmdd): 19890626
Source Institution: LAMONT-DOHERTY GEOLOGICAL OBSERVATORY
Country: USA
Platform Name: ROBERT D. CONRAD
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): A.BE
Project: CRUISE 09, LEG 4
Survey Departure Date (yyyymmdd): 19650120
Port of Departure: COLON, PANAMA
Survey Arrival Date (yyyymmdd): 19650208
Port of Arrival: ANTOFAGASTA, CHILE
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: +09
Bottommost Latitude: -24
Leftmost Longitude: -086
Rightmost Longitude: -070
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: 44
Reference Field Code: 03
Reference Field: IGRF-65
Method of Applying Residual Field: LINEAR INTERPOLATION BETWEEN NAV PTS
General Digitizing Rate of Gravity: 43
Theoretical Gravity Formula Code: 2
Theoretical Gravity Formula: INTERNAT'L 1930
Reference System Code: 2
Reference System: POTSDAM
Additional Documentation: 06- 3.5 AND 12 KHZ, WIDE BEAM
Number of Data Records: 5869
Min/Max Data Record:
Date: 1965 01 21
Latitude: -23.63500
Longitude: -85.94200
Bathymetry, 2- Way Traveltime: 000375
Bathymetry, Corrected Depth: 28.0
Magnetics Total Field, 1st Sensor: 259240
Magnetics Residual Field: -04030
Free-Air Anomaly: -2600
Min/Max Data Record:
Date: 1965 02 08
Latitude: +8.71000
Longitude: -70.51670
Bathymetry, 2- Way Traveltime: 105425
Bathymetry, Corrected Depth: 8052.0
Magnetics Total Field, 1st Sensor: 380420
Magnetics Residual Field: +05330
Free-Air Anomaly: +0795