Survey Identifier: V1706
Format Acronym: MGD77
Data Center File Number: 01030006
Parameters Surveyed Code: 55133
File Creation Date (yyyymmdd): 19890630
Source Institution: LAMONT-DOHERTY GEOLOGICAL OBSERVATORY
Country: U.S.A.
Platform Name: VEMA
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): J. HENNION
Project: CRUISE 17, LEG 6
Survey Departure Date (yyyymmdd): 19610311
Port of Departure: VALPARISO, CHILE
Survey Arrival Date (yyyymmdd): 19610318
Port of Arrival: TALCAHUANO, CHILE
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
Seismic Instrumentation: L-DGO 25CU.IN.AIRGUN,EEL, DRUM RECORDER
Formats of Seismic Data: TWO,2-CHANNEL SHEET RECORDS
Topmost Latitude of Survey: -32
Bottommost Latitude: -40
Leftmost Longitude: -078
Rightmost Longitude: -071
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.
Additional Documentation: 06 - 12 KHZ, WIDE BEAM (60 DEG), 1 SECOND SWEEP
Number of Data Records: 1476
Min/Max Data Record:
Date: 1961 03 11
Latitude: -39.15000
Longitude: -77.96670
Bathymetry, 2- Way Traveltime: 000500
Bathymetry, Corrected Depth: 38.0
Magnetics Total Field, 1st Sensor: 271840
Magnetics Residual Field: -03510
Min/Max Data Record:
Date: 1961 03 18
Latitude: -32.63330
Longitude: -71.55000
Bathymetry, 2- Way Traveltime: 071875
Bathymetry, Corrected Depth: 5416.0
Magnetics Total Field, 1st Sensor: 303420
Magnetics Residual Field: +03480