Survey Identifier: RNDB02WT
Format Acronym: MGD77
Data Center File Number: 15040190
Parameters Surveyed Code: 55553
File Creation Date (yyyymmdd): 19881201
Source Institution: SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country: USA
Platform Name: R/V T.WASHINGTON
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): R. DETRICK
Project: ROUNDABOUT LEG 2
Funding: NSF OCE87-02835
Survey Departure Date (yyyymmdd): 19880518
Port of Departure: HONOLULU,HAWAII
Survey Arrival Date (yyyymmdd): 19880610
Port of Arrival: HONOLULU,HAWAII
Navigation Instrumentation: SATNAV/GPS,AUTO LOG GYRO+2D DOPPLER SPD
Geodetic Datum/Position: LINEAR INTERP.BETWEEN ADJACENT FIXES
Bathymetry Instrumentation: SEABEAM VERTICAL BEAM (2&2/3 DEG)
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,35MM FILM,DIGITAL MAG. TAPE
Gravity Instrumentation: BELL BGM-3 METER
Additional Forms of Gravity Data: DIGITAL MAG TAPE
Seismic Instrumentation: 80 CU IN H2O & 1900C-BOLT AIRGUN
Formats of Seismic Data: ANAL.REC.,35MM FILM,DIGITAL MAG TAPE
Topmost Latitude of Survey: +25
Bottommost Latitude: +19
Leftmost Longitude: -160
Rightmost Longitude: -152
General Digitizing Rate of Bathymetry: 010
General Sampling Rate of Bathymetry: 1PING IN H2O
Assumed Sound Velocity: 15000
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-1985
Method of Applying Residual Field: LIN.INTERP.POINTS WITHIN ONE DEGREE SQUARE
General Digitizing Rate of Gravity: 010
General Sampling Rate of Gravity: 01
Theoretical Gravity Formula Code: 3
Theoretical Gravity Formula: IAG SYSTEM 1967
Reference System Code: 3
Reference System: SYSTEM IGSN 71
Corrections Applied: EOTVOS AND METER DRIFT
Departure Base Station Gravity: 9789236
Departure Base Station Description: SNUG HARBOR(PIER 49)
Arrival Base Station Gravity: 9789236
Arrival Base Station Description: SNUG HARBOR(PIER 49)
Additional Documentation: PROCESSED BY GEOLOGICAL DATA CENTER, SIO. DEPTHS CORRECTED FOR 5M SHIP DRAFT. GRAVITY BASE STATION VALUES PROVIDED BY M.ZUMBERGE,SIO/IGPP, GRAVITY: 1 SEC METER COUNTS FILTERED WITH 25 POLE FILTER WITH 148 SEC DELAY. FREE AIR ANOMALY SPIKES PRESENT BECAUSE SAME FILTER NOT USED, FOR NAVIGATION. GRAVITY REPROCESSED NOV 1988.
Number of Data Records: 33803
Min/Max Data Record:
Date: 1988 05 18
Latitude: +19.74060
Longitude: -159.18706
Bathymetry, 2- Way Traveltime: 000560
Bathymetry, Corrected Depth: 42.0
Magnetics Total Field, 1st Sensor: 354500
Magnetics Residual Field: -02212
Observed Gravity: 9785343
Free-Air Anomaly: -1397
Min/Max Data Record:
Date: 1988 06 10
Latitude: +24.08782
Longitude: -152.96469
Bathymetry, 2- Way Traveltime: 076320
Bathymetry, Corrected Depth: 5766.0
Magnetics Total Field, 1st Sensor: 367620
Magnetics Residual Field: +05491
Observed Gravity: 9790173
Free-Air Anomaly: +2606