Survey Identifier: MARA07WT
Format Acronym: MGD77
Data Center File Number: 15040100
Parameters Surveyed Code: 55333
File Creation Date (yyyymmdd): 19811007
Source Institution: SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country: USA
Platform Name: R/V THOMAS WASHINGTON
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): BIBEE D.
Project: MARIANA LEG 7 SEATAR IDOE <OCE78-16758>
Survey Departure Date (yyyymmdd): 19781120
Port of Departure: GUAM
Survey Arrival Date (yyyymmdd): 19781207
Port of Arrival: GUAM
Navigation Instrumentation: SATNAV,AUTO LOG GYRO+2D DOPPLER SPD LOG
Geodetic Datum/Position: LINEAR INTERP.BETWEEN ADJACENT FIXES
Bathymetry Instrumentation: 3.5-12KHZ/UGR,GIFFT RECORDERS/WIDEBEAM
Additional Forms of Bathymetric Data: ANAL.RECORDS,CARDS,35MMFILM
Magnetics Instrumentation: VARIAN MFD PROTON PRECESSION MOD 4970
Additional Forms of Magnetics Data: ANAL.RECORDS,CARDS,35MMFILM
Gravity Instrumentation: ASKANIA GSS2,ANSCHUTZ ELECT. GYRO TABLE
Additional Forms of Gravity Data: ANALOGUE RECORDS
Seismic Instrumentation: 20TO300CU.IN.AIRGUN,10-300HZ,EDO PSR REC
Formats of Seismic Data: ANAL.RECORDS,35MM MICROFILM
Topmost Latitude of Survey: +19
Bottommost Latitude: +13
Leftmost Longitude: +142
Rightmost Longitude: +148
General Digitizing Rate of Bathymetry: 050
General Sampling Rate of Bathymetry: 1SECONDSWEEP
Assumed Sound Velocity: 14630
Bathymetric Datum Code: 00
Interpolation Scheme: 5 MINUTE INTERVAL
General Digitizing Rate of Magnetics: 050
General Sampling Rate of Magnetics: 06
Reference Field Code: 04
Reference Field: IGRF 1975
Method of Applying Residual Field: LIN. INTERP.POINTS WITHIN ONE DEGREE SQUARE
Number of Data Records: 5096
Min/Max Data Record:
Date: 1978 11 20
Latitude: +13.42879
Longitude: +142.79440
Bathymetry, 2- Way Traveltime: 000625
Bathymetry, Corrected Depth: 47.0
Magnetics Total Field, 1st Sensor: 354690
Magnetics Residual Field: -09110
Min/Max Data Record:
Date: 1978 12 07
Latitude: +18.77530
Longitude: +147.46700
Bathymetry, 2- Way Traveltime: 064125
Bathymetry, Corrected Depth: 4825.0
Magnetics Total Field, 1st Sensor: 374200
Magnetics Residual Field: +05510