Survey Identifier: MRTN03WT
Format Acronym: MGD77
Data Center File Number: 15040125
Parameters Surveyed Code: 55133
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): LADD J. (LDGO)
Project: MARATHON LEG 3
Funding: NSF OCE83-17741
Survey Departure Date (yyyymmdd): 19840610
Port of Departure: KODIAK,ALASKA
Survey Arrival Date (yyyymmdd): 19840709
Port of Arrival: KODIAK,ALASKA
Navigation Instrumentation: LORAN-C 1 MINUTE FIXES
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
Additional Forms of Gravity Data: NONE COLLECTED
Seismic Instrumentation: WATERGUN SOURCE,DIGITAL 1 CHANNELS
Formats of Seismic Data: ANAL.REC,DIGITAL MAG.TAPE
Topmost Latitude of Survey: +58
Bottommost Latitude: +52
Leftmost Longitude: -164
Rightmost Longitude: -151
General Digitizing Rate of Bathymetry: 010
General Sampling Rate of Bathymetry: 1 TO 13SEC
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: 42718
Min/Max Data Record:
Date: 1984 06 10
Latitude: +52.89222
Longitude: -163.76479
Bathymetry, 2- Way Traveltime: 008333
Bathymetry, Corrected Depth: 612.0
Magnetics Total Field, 1st Sensor: 500280
Magnetics Residual Field: -04210
Min/Max Data Record:
Date: 1984 07 09
Latitude: +57.73320
Longitude: -151.92183
Bathymetry, 2- Way Traveltime: 092373
Bathymetry, Corrected Depth: 7003.0
Magnetics Total Field, 1st Sensor: 537470
Magnetics Residual Field: +04273