Survey Identifier: ARIA03WT
Format Acronym: MGD77
Data Center File Number: 15040151
Parameters Surveyed Code: 55333
File Creation Date (yyyymmdd): 19821122
Source Institution: SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country: USA
Platform Name: R/V THOMAS WASHINGTON
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): SHIPLEY T.,MOORE G.
Project: ARIADNE LEG 3 <NSF OCE80-24472>
Survey Departure Date (yyyymmdd): 19820407
Port of Departure: PUNTARENAS,COSTA RICA
Survey Arrival Date (yyyymmdd): 19820428
Port of Arrival: SAN DIEGO,CALIFORNIA
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
Gravity Instrumentation: ASKANIA GSS2,ANSCHUTZ ELECT. GYRO TABLE
Additional Forms of Gravity Data: ANALOGUE RECORDS
Seismic Instrumentation: WATERGUN SOURCE, DIGITAL, 1 CHANNEL
Formats of Seismic Data: ANAL.REC,35MM FILM,DIGITAL MAG. TAPE
Topmost Latitude of Survey: +33
Bottommost Latitude: +08
Leftmost Longitude: -118
Rightmost Longitude: -084
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 do not exactly correspond to the multibm data available.
Number of Data Records: 31022
Min/Max Data Record:
Date: 1982 04 07
Latitude: +8.85270
Longitude: -117.21780
Bathymetry, 2- Way Traveltime: 000500
Bathymetry, Corrected Depth: 38.0
Magnetics Total Field, 1st Sensor: 366800
Magnetics Residual Field: -02580
Min/Max Data Record:
Date: 1982 04 28
Latitude: +32.53930
Longitude: -84.77550
Bathymetry, 2- Way Traveltime: 087175
Bathymetry, Corrected Depth: 6616.0
Magnetics Total Field, 1st Sensor: 481350
Magnetics Residual Field: +05920