Survey Identifier: V2108


Format Acronym: MGD77
Data Center File Number: 01030070
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): W. LUDWIG
Project: CRUISE 21, LEG 8
Survey Departure Date (yyyymmdd): 19650708
Port of Departure: NAHA, OKINAWA
Survey Arrival Date (yyyymmdd): 19650726
Port of Arrival: MANILA, PHILIPPINES
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: +27
Bottommost Latitude: +12
Leftmost Longitude: +120
Rightmost Longitude: +141
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: 2278

Min/Max Data Record:
Date: 1965 07 08
Latitude: +12.48170
Longitude: +120.51500
Bathymetry, 2- Way Traveltime: 000375
Bathymetry, Corrected Depth: 28.0
Magnetics Total Field, 1st Sensor: 376100
Magnetics Residual Field: -02460
Free-Air Anomaly: -2262

Min/Max Data Record:
Date: 1965 07 26
Latitude: +26.20000
Longitude: +141.00000
Bathymetry, 2- Way Traveltime: 109675
Bathymetry, Corrected Depth: 8404.0
Magnetics Total Field, 1st Sensor: 439810
Magnetics Residual Field: +02670
Free-Air Anomaly: +0889