Survey Identifier: PASC01WT
Format Acronym: MGD77
Data Center File Number: 15040140
Parameters Surveyed Code: 55131
File Creation Date (yyyymmdd): 19830406
Source Institution: SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country: USA
Platform Name: R/V THOMAS WASHINGTON
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): RYAN W.,FOX J.
Project: PASCAU LEG 1 <NSF-OCE80-24472>
Survey Departure Date (yyyymmdd): 19830105
Port of Departure: SAN DIEGO,CALIFORNIA
Survey Arrival Date (yyyymmdd): 19830201
Port of Arrival: MANZANILLO,MEXICO
Navigation Instrumentation: SATNAV,AUTO LOG GYRO+2D DOPPLER SPD LOG
Geodetic Datum/Position: LINEAR INTERP.BETWEEN ADJACENT FIXES
Bathymetry Instrumentation: SEABEAM VERT.BEAM(2&2/3DEG)&3.5KHZ(WIDE)
Additional Forms of Bathymetric Data: ANAL.REC,35MM FILM,DIGITAL MAG. TAPE
Magnetics Instrumentation: VARIAN MFD PROTON PRECESSION MOD 4970
Additional Forms of Magnetics Data: ANAL.RECORDS,CARDS
Topmost Latitude of Survey: +33
Bottommost Latitude: +09
Leftmost Longitude: -118
Rightmost Longitude: -103
General Digitizing Rate of Bathymetry: 010
General Sampling Rate of Bathymetry: 1TO10SECONDS
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 88
Interpolation Scheme: 1 MINUTE INTERVAL
General Digitizing Rate of Magnetics: 050
General Sampling Rate of Magnetics: 06
Reference Field Code: 80
Reference Field: IGRF 1980
Method of Applying Residual Field: LIN. INTERP.POINTS WITHIN ONE DEGREE SQUARE
Additional Documentation: SYST_COMMENTS DEPTH CORRECTED FOR SHIP DRAFT (5M), 12.158 kHz, 16 beams, NAVI_INSTRU Amatec-Straza 2-D Doppler speed log, Sperry MK-27 Gyro, Prototype, GPS receiver on loan from Lamont-Doherty, ITT Transit Satellite Receiver, Mod, 5001, REAL TIME SEABEAM SWATHS BOOKS ON MICROFILM, NGDC has multibeam bathymetric data for this cruise, however the tracklines, found here in GEODAS may not exactly correspond to the multibeam data.
Number of Data Records: 39631
Min/Max Data Record:
Date: 1983 01 05
Latitude: +9.41050
Longitude: -117.24930
Bathymetry, 2- Way Traveltime: 001350
Bathymetry, Corrected Depth: 101.0
Magnetics Total Field, 1st Sensor: 364180
Magnetics Residual Field: -04520
Min/Max Data Record:
Date: 1983 02 01
Latitude: +32.70659
Longitude: -103.18850
Bathymetry, 2- Way Traveltime: 077900
Bathymetry, Corrected Depth: 5889.0
Magnetics Total Field, 1st Sensor: 472130
Magnetics Residual Field: +11730