Survey Identifier: PPTU03WT


Format Acronym: MGD77
Data Center File Number: 15040162
Parameters Surveyed Code: 55311
File Creation Date (yyyymmdd): 19
Source Institution: SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country: USA
Platform Name: R/V T.WASHINGTON
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): MAMMERICKX, J.
Project: PAPATUA LEG 3
Funding: U.C. GENERAL FUNDS
Survey Departure Date (yyyymmdd): 19851121
Port of Departure: MANZANILLO,MEXICO
Survey Arrival Date (yyyymmdd): 19851226
Port of Arrival: PAGO PAGO,SAMOA
Navigation Instrumentation: SATNAV,GPS,AUTO LOG GYRO+2D DOPPLER SPD
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: GEOMETRICS MAGNETOMETER MOD G-801/3
Additional Forms of Magnetics Data: ANAL.REC,DIGITAL MAG. TAPE
Gravity Instrumentation: NONE COLLECTED
Seismic Instrumentation: NONE COLLECTED
Formats of Seismic Data: NONE COLLECTED
Topmost Latitude of Survey: +20
Bottommost Latitude: -15
Leftmost Longitude: -171
Rightmost Longitude: -104
General Digitizing Rate of Bathymetry: 010
General Sampling Rate of Bathymetry: 1PING IN H20
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
Interpolation Scheme: 1 MINUTE AVERAGES EXTRACTED FROM SEABEAM VERTICAL BEAMS
General Digitizing Rate of Magnetics: 010
General Sampling Rate of Magnetics: 06
Reference Field Code: 03
Reference Field: IGRF 1980
Method of Applying Residual Field: LIN.INTERP.POINTS WITHIN ONE DEGREE SQUARE
Additional Documentation: PROCESSED BY GEOLOGICAL DATA CENTER, SCRIPPS INSTITUTION OF OCEANOGRAPHY, DEPTHS CORRECTED FOR 5 METER SHIP DRAFT, NGDC has multibeam bathymetric data for this cruise, however the tracklines, found here in GEODAS may not exactly correspond to the multibm data available. NGDC extracted vertical beam from multibeam bathymetry and inserted data as, single beam bathymetry for this survey between latitude 3.82881 and 1.02032, degrees N.
Number of Data Records: 50369

Min/Max Data Record:
Date: 1985 11 21
Latitude: -14.96516
Longitude: -170.78519
Bathymetry, 2- Way Traveltime: 005506
Bathymetry, Corrected Depth: 415.0
Magnetics Total Field, 1st Sensor: 314160
Magnetics Residual Field: -05215

Min/Max Data Record:
Date: 1985 12 26
Latitude: +19.06800
Longitude: -104.30996
Bathymetry, 2- Way Traveltime: 077720
Bathymetry, Corrected Depth: 5878.0
Magnetics Total Field, 1st Sensor: 422120
Magnetics Residual Field: +04861