Survey Identifier: V2607
Format Acronym: MGD77
Data Center File Number: 01030111
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. DENNIS HAYES
Project: CRUISE 26, LEG 07
Survey Departure Date (yyyymmdd): 19680203
Port of Departure: RECIFE, BRAZIL
Survey Arrival Date (yyyymmdd): 19690228
Port of Arrival: SAN JUAN, PUERTO RICO
Navigation Instrumentation: SATELLITE/SEXTANT
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: GRAF-ASKANIA GSS2-33
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: +19
Bottommost Latitude: -09
Leftmost Longitude: -067
Rightmost Longitude: -030
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 - 3.5 AND 12 KHZ, WIDE BEAM (60 DEG), 1 SECOND SWEEP
Number of Data Records: 12599
Min/Max Data Record:
Date: 1969 02 03
Latitude: -8.06330
Longitude: -66.10330
Bathymetry, 2- Way Traveltime: 000275
Bathymetry, Corrected Depth: 21.0
Magnetics Total Field, 1st Sensor: 261610
Magnetics Residual Field: -05830
Free-Air Anomaly: -2022
Min/Max Data Record:
Date: 1969 02 28
Latitude: +18.99880
Longitude: -30.59280
Bathymetry, 2- Way Traveltime: 075900
Bathymetry, Corrected Depth: 5754.0
Magnetics Total Field, 1st Sensor: 433590
Magnetics Residual Field: +06380
Free-Air Anomaly: +1453