Survey Identifier: WEL7502


Format Acronym: MGD77
Data Center File Number: 07080001
Parameters Surveyed Code: 55511
File Creation Date (yyyymmdd): 19780407
Source Institution: OREGON STATE UNIVERSITY
Country: U.S.A.
Platform Name: WECOMA
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): DR. RICHARD COUCH
Project: WECOMA LONG OCEAN CRUISE-1 1975 LEG 2
Funding: ONR
Survey Departure Date (yyyymmdd): 19751206
Port of Departure: WOODS HOLE, MASSACHUSETTES
Survey Arrival Date (yyyymmdd): 19751214
Port of Arrival: PANAMA, PANAMA
Navigation Instrumentation: SATELLITE
Geodetic Datum/Position: SATELLITE/DEAD RECKONING
Bathymetry Instrumentation: 12 KHZ WIDE BEAM (60 DEG)
Additional Forms of Bathymetric Data: ANALOG RECORDS, MICROFILM
Magnetics Instrumentation: GEOMETRICS G801/3 PROTON PRECESSION
Additional Forms of Magnetics Data: ANALOG RECORDS
Gravity Instrumentation: LACOSTE AND ROMBERG AIR-SEA S-42
Additional Forms of Gravity Data: ANALOG RECORDS
Topmost Latitude of Survey: +41
Bottommost Latitude: +09
Leftmost Longitude: -081
Rightmost Longitude: -071
General Digitizing Rate of Bathymetry: 050
General Sampling Rate of Bathymetry: 2 SEC SWEEP
Assumed Sound Velocity: 14630
Bathymetric Datum Code: 00
Interpolation Scheme: NONE
General Digitizing Rate of Magnetics: 050
General Sampling Rate of Magnetics: 03
Magnetic Sensor Tow Distance: 215
Sensor Depth: 30
Reference Field Code: 04
Reference Field: IGRF 75
Method of Applying Residual Field: LINEAR INTERPOLATION BETWEEN NAVIGATION POINTS
General Digitizing Rate of Gravity: 050
General Sampling Rate of Gravity: 00
Theoretical Gravity Formula Code: 3
Theoretical Gravity Formula: IAG SYSTEM 1967
Reference System: SEE ADD DOC / 18
Corrections Applied: 0.30 MGAL PER DAY DRIFT
Departure Base Station Gravity: 9803125
Departure Base Station Description: DOD 0769-0
Arrival Base Station Gravity: 9782226
Arrival Base Station Description: DOD 0115-9
Additional Documentation: 14 U.S. COMMERCE PIER G=980104.3
Number of Data Records: 4313

Min/Max Data Record:
Date: 1975 12 06
Latitude: +9.70240
Longitude: -80.74510
Bathymetry, 2- Way Traveltime: 000250
Bathymetry, Corrected Depth: 19.0
Magnetics Total Field, 1st Sensor: 375310
Magnetics Residual Field: -07360
Free-Air Anomaly: -1707

Min/Max Data Record:
Date: 1975 12 14
Latitude: +40.69100
Longitude: -71.02120
Bathymetry, 2- Way Traveltime: 070900
Bathymetry, Corrected Depth: 5378.0
Magnetics Total Field, 1st Sensor: 462570
Magnetics Residual Field: -01270
Free-Air Anomaly: +0817