Survey Identifier: C3002
Format Acronym: MGD77
Data Center File Number: 01010303
Parameters Surveyed Code: 51511
File Creation Date (yyyymmdd): 19900313
Source Institution: Lamont-Doherty Geological Observatory
Country: United States of A
Platform Name: R/V Robert D. Conrad
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): TRANSIT CRUISE, MIKE RAWSON
Project: TRANSIT: BARBADOS TO FORTALEZA, BRAZIL
Survey Departure Date (yyyymmdd): 19890201
Port of Departure: BRIDGETOWN, BARBADOS
Survey Arrival Date (yyyymmdd): 19890208
Port of Arrival: FORTALEZA, BRAZIL
Navigation Instrumentation: FURUNO,TRANSIT SAT,GPS
Geodetic Datum/Position: FURUNO DR BETWEEN SAT FIXES
Bathymetry Instrumentation: RAYTHEON LSR 3.5 KHZ PDR
Gravity Instrumentation: BELL AEROSPACE BGM-3 GRAVITY METER
Topmost Latitude of Survey: +14
Bottommost Latitude: -04
Leftmost Longitude: -060
Rightmost Longitude: -038
General Digitizing Rate of Bathymetry: 050
General Sampling Rate of Bathymetry: 1/SECOND.
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
Interpolation Scheme: 5 MINUTE INTERVALS.
Reference Field Code: 00
General Digitizing Rate of Gravity: 010
General Sampling Rate of Gravity: 00
Theoretical Gravity Formula Code: 8
Theoretical Gravity Formula: INTERNATIONAL 80
Reference System Code: 2
Corrections Applied: +.059 MGAL/DAY, DC +19.9 MGAL
Departure Base Station Gravity: 9782946
Departure Base Station Description: CAMBRIDGE G&G NEW HARBOR JETTY
Arrival Base Station Gravity: 9781761
Arrival Base Station Description: RECIFE, BRAZIL.HARBOR LIGHTHOUS
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 ) . PRECRUISE GRAVITY TIE IN BARBADOS AT 1430Z 28 JAN 89, POSTCRUISE GRAVITY TIE IN RECIFE, BRAZIL 13 MARCH 89.
Number of Data Records: 10802
Min/Max Data Record:
Date: 1989 02 01
Latitude: -3.71365
Longitude: -59.64904
Bathymetry, 2- Way Traveltime: 000200
Bathymetry, Corrected Depth: 15.0
Observed Gravity: 9779346
Free-Air Anomaly: -0781
Min/Max Data Record:
Date: 1989 02 08
Latitude: +13.10599
Longitude: -38.47788
Bathymetry, 2- Way Traveltime: 056160
Bathymetry, Corrected Depth: 4221.0
Observed Gravity: 9783192
Free-Air Anomaly: +0756