Survey Identifier: MRTN04WT
Format Acronym: MGD77
Data Center File Number: 15040126
Parameters Surveyed Code: 55113
File Creation Date (yyyymmdd): 19850718
Source Institution: SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country: USA
Platform Name: R/V T.WASHINGTON
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): MENARD W.,HEY R.
Project: MARATHON LEG 4
Funding: NSF OCE83-17741
Survey Departure Date (yyyymmdd): 19840713
Port of Departure: KODIAK,ALASKA
Survey Arrival Date (yyyymmdd): 19840808
Port of Arrival: HONOLULU,HAWAII
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)
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: WATERGUN SOURCE, DIGITAL, 1 CHANNEL
Formats of Seismic Data: ANAL.REC,DIGITAL MAG.TAPE
Topmost Latitude of Survey: +58
Bottommost Latitude: +21
Leftmost Longitude: -159
Rightmost Longitude: -148
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: DEPTHS CORRECTED FOR 5 METER SHIP DRAFT.
Number of Data Records: 37390
Min/Max Data Record:
Date: 1984 07 13
Latitude: +21.23804
Longitude: -158.93797
Bathymetry, 2- Way Traveltime: 000520
Bathymetry, Corrected Depth: 39.0
Magnetics Total Field, 1st Sensor: 353930
Magnetics Residual Field: -06035
Min/Max Data Record:
Date: 1984 08 08
Latitude: +57.79507
Longitude: -148.96792
Bathymetry, 2- Way Traveltime: 086533
Bathymetry, Corrected Depth: 6566.0
Magnetics Total Field, 1st Sensor: 542410
Magnetics Residual Field: +09210