Survey Identifier: PPTU11WT
Format Acronym: MGD77
Data Center File Number: 15040170
Parameters Surveyed Code: 55333
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): LONSDALE P.
Project: PAPATUA LEG 11
Funding: NSF ONR83-17741
Survey Departure Date (yyyymmdd): 19860723
Port of Departure: SASEBO,JAPAN
Survey Arrival Date (yyyymmdd): 19860820
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: GEOMETRICS MAGNETOMETER MOD G-801/3
Additional Forms of Magnetics Data: ANAL.REC,DIGITAL MAG. TAPE
Gravity Instrumentation: ASKANIA GSS2,ANSCHUTZ ELECT. GYRO TABLE
Additional Forms of Gravity Data: ANAL.REC,35MM FILM,DIGITAL MAG.TAPE
Seismic Instrumentation: WATERGUN SOURCE, DIGITAL, 1 CHANNEL
Formats of Seismic Data: ANAL.REC,35MM FILM,DIGITAL MAG.TAPE
Topmost Latitude of Survey: +53
Bottommost Latitude: +31
Leftmost Longitude: +129
Rightmost Longitude: -117
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
General Digitizing Rate of Gravity: 010
General Sampling Rate of Gravity: 20
Theoretical Gravity Formula Code: 3
Theoretical Gravity Formula: IAG SYSTEM 1967
Reference System Code: 2
Reference System: POTSDAM SYSTEM
Additional Documentation: DEPTHS CORRECTED FOR 5M SHIP DRAFT. GRAVITY COLLECTED 2049Z/5AUG-2051Z/20AUG86, BUT NOT PROCESSED (NO FUNDS). NO BEG/END TIE POINTS BUT STILL METER READING, AVAIL. IN SAN DIEGO. 3.5KHZ DEPTH RECORDED 24JUL-4AUG. NO U/W DATA COLLECTED, 2000Z/25JUL-0700Z/28JUL86 (USSR WATERS). SEISMICS RECORDED DIGITAL ONLY FEW, HOURS. REMAINDER ANALOGUE DATA. NGDC has multibeam bathymetry, however GEODAS, tracklines do not exactly correspond to the multibeam data. Full resolution, multibeam data NOT available from DATA/TIME 8608010304033 to 8608022359083.
Number of Data Records: 41174
Min/Max Data Record:
Date: 1986 07 23
Latitude: +31.89990
Longitude: -179.99940
Bathymetry, 2- Way Traveltime: 000746
Bathymetry, Corrected Depth: 56.0
Magnetics Total Field, 1st Sensor: 442980
Magnetics Residual Field: -08525
Min/Max Data Record:
Date: 1986 08 20
Latitude: +52.48193
Longitude: +179.99961
Bathymetry, 2- Way Traveltime: 096480
Bathymetry, Corrected Depth: 7328.0
Magnetics Total Field, 1st Sensor: 492680
Magnetics Residual Field: +10622