Survey Identifier: V3402


Format Acronym: MGD77
Data Center File Number: 01030216
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): MARCUS LANGSETH
Project: v3402
Survey Departure Date (yyyymmdd): 19770325
Port of Departure: GUAM, APRE
Survey Arrival Date (yyyymmdd): 19770422
Port of Arrival: GUAM, APRE
Navigation Instrumentation: SATELLITE, AND 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 GSS-2-12
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: +19
Bottommost Latitude: +13
Leftmost Longitude: +132
Rightmost Longitude: +145
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: 04
Reference Field: IGRF1975
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: 01 - 3.5 AND 12 KHZ, WIDE BEAM (60 DEG), 1 SECOND SWEEP
Number of Data Records: 7979

Min/Max Data Record:
Date: 1977 03 25
Latitude: +13.51500
Longitude: +132.69400
Bathymetry, 2- Way Traveltime: 001375
Bathymetry, Corrected Depth: 103.0
Magnetics Total Field, 1st Sensor: 360300
Magnetics Residual Field: -03860
Free-Air Anomaly: -0851

Min/Max Data Record:
Date: 1977 04 22
Latitude: +18.70350
Longitude: +144.60410
Bathymetry, 2- Way Traveltime: 091875
Bathymetry, Corrected Depth: 6989.0
Magnetics Total Field, 1st Sensor: 395900
Magnetics Residual Field: +03870
Free-Air Anomaly: +1066