Survey Identifier: C2903
Format Acronym: MGD77
Data Center File Number: 01010290
Parameters Surveyed Code: 51311
File Creation Date (yyyymmdd): 19900326
Source Institution: Lamont-Doherty Geological Observatory
Country: United States
Platform Name: R/V Robert D. Conrad
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): Dr. Roger Flood
Project: C2903
Survey Departure Date (yyyymmdd): 19880304
Port of Departure: Punta Arenas, Chile
Survey Arrival Date (yyyymmdd): 19880314
Port of Arrival: Buenos Aires, Argentina
Navigation Instrumentation: FURUNO,TRANSIT SAT,GPS
Geodetic Datum/Position: FURUNO DR BETWEEN SAT FIXES
Bathymetry Instrumentation: Raytheon LSR 3.5 PDR
Gravity Instrumentation: BELL AEROSPACE BGM-3 GRAVITY METER
Topmost Latitude of Survey: -35
Bottommost Latitude: -54
Leftmost Longitude: -071
Rightmost Longitude: -045
General Digitizing Rate of Bathymetry: 050
General Sampling Rate of Bathymetry: 1 each 1 sec
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
General Digitizing Rate of Magnetics: 010
General Sampling Rate of Magnetics: 20
Reference Field Code: 88
Reference Field: IGRF-85
Method of Applying Residual Field: BILINEAR INTERP IN 1 DEG SQUARE
General Digitizing Rate of Gravity: 010
General Sampling Rate of Gravity: 00
Theoretical Gravity Formula Code: 2
Reference System Code: 2
Corrections Applied: +.0328 MGAL/DAY, DC +2.8 MGAL
Departure Base Station Gravity: 9780300
Departure Base Station Description: NOAA SHIP BASE NO.2,MIAMI,1/7/87
Arrival Base Station Gravity: 9813262
Arrival Base Station Description: PORT ADMN BLDG,P.ARENAS,2/13/87
Additional Documentation: THEORETICAL GRAVITY FORMULA: Yo = 978.0327 * ( 1 + a - b ) where, a = .0053024 * sin( theta ) * sin( theta ), b = .0000058 * sin( 2 * theta ) * sin( 2 * theta ) .
Number of Data Records: 14646
Min/Max Data Record:
Date: 1988 03 04
Latitude: -53.09595
Longitude: -70.70814
Bathymetry, 2- Way Traveltime: 000080
Bathymetry, Corrected Depth: 6.0
Min/Max Data Record:
Date: 1988 03 14
Latitude: -35.16421
Longitude: -45.06923
Bathymetry, 2- Way Traveltime: 080933
Bathymetry, Corrected Depth: 6104.0