Survey Identifier: MARA04WT
Format Acronym: MGD77
Data Center File Number: 15040097
Parameters Surveyed Code: 55131
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): ANDERSON R.N.,KARIG D.E.
Project: MARIANA LEG 4 SEATAR IDOE<OCE78-16758>
Survey Departure Date (yyyymmdd): 19780923
Port of Departure: GUAM
Survey Arrival Date (yyyymmdd): 19781011
Port of Arrival: GUAM
Navigation Instrumentation: SATNAV,AUTO 2D-DOPPLER,MANUAL GYRO ENTRY
Geodetic Datum/Position: LINEAR INTERP.BETWEEN ADJACENT FIXES
Bathymetry Instrumentation: 3.5KHZ/RAYTHEON UGR RECORDER/WIDE BEAM
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
Topmost Latitude of Survey: +19
Bottommost Latitude: +13
Leftmost Longitude: +143
Rightmost Longitude: +147
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: 5317
Min/Max Data Record:
Date: 1978 09 23
Latitude: +13.75410
Longitude: +143.43680
Bathymetry, 2- Way Traveltime: 017075
Bathymetry, Corrected Depth: 1278.0
Magnetics Total Field, 1st Sensor: 362430
Magnetics Residual Field: -04180
Min/Max Data Record:
Date: 1978 10 11
Latitude: +18.14820
Longitude: +146.77839
Bathymetry, 2- Way Traveltime: 069850
Bathymetry, Corrected Depth: 5268.0
Magnetics Total Field, 1st Sensor: 373300
Magnetics Residual Field: +03020