Survey Identifier: WEL7503
Format Acronym: MGD77
Data Center File Number: 07080002
Parameters Surveyed Code: 55511
File Creation Date (yyyymmdd): 19760429
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 3
Funding: O.N.R.
Survey Departure Date (yyyymmdd): 19751217
Port of Departure: PANAMA, PANAMA
Survey Arrival Date (yyyymmdd): 19751228
Port of Arrival: SAN DIEGO, CALIFORNIA
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: +33
Bottommost Latitude: +06
Leftmost Longitude: -118
Rightmost Longitude: -079
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: 0.19 MGAL PER DAY DRIFT
Departure Base Station Gravity: 9782226
Departure Base Station Description: DOD 0115-9
Arrival Base Station Gravity: 9795177
Arrival Base Station Description: SEE ADD. DOC / 19,20,21
Additional Documentation: 14 U.S. COMMERCE PIER G=980104.3, 15 OSU BASE STATION ON B STREET PIER WHICH IS TIED TO WA 453, WOLLARD AND, 15 ROSE 1963 PG 94 MINUS 14.5 MGAL=979519.1 TO REFLECT U.S.COMMERCE PIER, 15 G=980104.3
Number of Data Records: 6333
Min/Max Data Record:
Date: 1975 12 17
Latitude: +6.89470
Longitude: -117.12020
Bathymetry, 2- Way Traveltime: 000250
Bathymetry, Corrected Depth: 19.0
Magnetics Total Field, 1st Sensor: 359460
Magnetics Residual Field: -05580
Free-Air Anomaly: -1550
Min/Max Data Record:
Date: 1975 12 28
Latitude: +32.19400
Longitude: -79.24120
Bathymetry, 2- Way Traveltime: 079000
Bathymetry, Corrected Depth: 5975.0
Magnetics Total Field, 1st Sensor: 488960
Magnetics Residual Field: +04670
Free-Air Anomaly: +0702