Survey Identifier: ARIA02WT
Format Acronym: MGD77
Data Center File Number: 15040150
Parameters Surveyed Code: 55133
File Creation Date (yyyymmdd): 19820701
Source Institution: SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country: USA
Platform Name: R/V THOMAS WASHINGTON
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): LONSDALE P.
Project: ARIADNE LEG 2 <NSF OCE80-24472>
Survey Departure Date (yyyymmdd): 19820217
Port of Departure: PAPEETE,TAHITI
Survey Arrival Date (yyyymmdd): 19820403
Port of Arrival: PUNTARENAS,COSTA RICA
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
Seismic Instrumentation: WATERGUN SOURCE, DIGITAL, 1 CHANNEL
Formats of Seismic Data: ANAL.REC,35MM FILM,DIGITAL MAG. TAPE
Topmost Latitude of Survey: +10
Bottommost Latitude: -21
Leftmost Longitude: -150
Rightmost Longitude: -079
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: DEPTH CORRECTED FOR SHIP DRAFT (5M), 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: 64885
Min/Max Data Record:
Date: 1982 02 17
Latitude: -20.01420
Longitude: -149.43071
Bathymetry, 2- Way Traveltime: 000500
Bathymetry, Corrected Depth: 38.0
Magnetics Total Field, 1st Sensor: 297660
Magnetics Residual Field: -12020
Min/Max Data Record:
Date: 1982 04 03
Latitude: +9.96480
Longitude: -79.47870
Bathymetry, 2- Way Traveltime: 067400
Bathymetry, Corrected Depth: 5075.0
Magnetics Total Field, 1st Sensor: 350810
Magnetics Residual Field: +05140