Survey Identifier: V2002


Format Acronym: MGD77
Data Center File Number: 01030051
Parameters Surveyed Code: 55533
File Creation Date (yyyymmdd): 19890703
Source Institution: LAMONT-DOHERTY GEOLOGICAL OBSERVATORY
Country: U.S.A.
Platform Name: VEMA
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): DR. M. TALWANI
Project: CRUISE 20, LEG 2
Survey Departure Date (yyyymmdd): 19640302
Port of Departure: SAN JUAN, PUERTO RICO
Survey Arrival Date (yyyymmdd): 19640316
Port of Arrival: CRISTOBAL, PANAMA
Navigation Instrumentation: SEXTANT
Geodetic Datum/Position: 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: GRAF-ASKANIA GSS2-12
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: +20
Bottommost Latitude: +09
Leftmost Longitude: -080
Rightmost Longitude: -058
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: 060
General Sampling Rate of Magnetics: 06
Reference Field Code: 03
Reference Field: IGRF-65
Method of Applying Residual Field: LINEAR INTERPOLATION BETWEEN NAV. PTS.
General Digitizing Rate of Gravity: 100
General Sampling Rate of Gravity: 00
Theoretical Gravity Formula Code: 2
Theoretical Gravity Formula: INTERNATIONAL1930
Reference System Code: 2
Reference System: POTSDAM SYSTEM
Additional Documentation: 06 - 12 KHZ, WIDE BEAM (60 DEG),1 SECOND SWEEP
Number of Data Records: 2151

Min/Max Data Record:
Date: 1964 03 02
Latitude: +9.37500
Longitude: -79.87500
Bathymetry, 2- Way Traveltime: 000375
Bathymetry, Corrected Depth: 28.0
Magnetics Total Field, 1st Sensor: 380420
Magnetics Residual Field: -06200
Free-Air Anomaly: -2688

Min/Max Data Record:
Date: 1964 03 16
Latitude: +19.66670
Longitude: -58.33330
Bathymetry, 2- Way Traveltime: 101625
Bathymetry, Corrected Depth: 7786.0
Magnetics Total Field, 1st Sensor: 438650
Magnetics Residual Field: +02870
Free-Air Anomaly: +2089