Survey Identifier: SOJN09MV
Format Acronym: MGD77
Data Center File Number: 15020166
Parameters Surveyed Code: 51511
File Creation Date (yyyymmdd): 20001129
Source Institution: SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country: USA
Platform Name: R/V MELVILLE
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): ALAN CHAVE,WOODS HOLE
Project: SOJOURN EXPEDITION LEG 9
Funding: NSF
Survey Departure Date (yyyymmdd): 19970531
Port of Departure: PAPEETE,TAHITI
Survey Arrival Date (yyyymmdd): 19970629
Port of Arrival: SAN DIEGO,CALIFORNIA
Navigation Instrumentation: TRIMBLE TASMAN P(Y) GPS
Geodetic Datum/Position: WGS-84; LINEAR FIT TO 60 SEC FIXES
Bathymetry Instrumentation: SEABEAM 2000 w/SIDESCAN
Additional Forms of Bathymetric Data: ANAL.REC.,35MM FILM,DIGITAL MAG. TAPE
Additional Forms of Magnetics Data: NONE COLLECTED-MAGNETOMETER BROKEN
Gravity Instrumentation: BELL BGM-3 METER
Additional Forms of Gravity Data: DIGITAL TAPE
Formats of Seismic Data: NONE COLLECTED
Topmost Latitude of Survey: 33
Bottommost Latitude: -19
Leftmost Longitude: -150
Rightmost Longitude: -109
General Digitizing Rate of Bathymetry: 010
General Sampling Rate of Bathymetry: 1PING IN H2O
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
Interpolation Scheme: ONE MINUTE VALUES EXTRACTED FROM SEABEAM CENTER BEAM
General Digitizing Rate of Magnetics: 010
General Sampling Rate of Magnetics: 06
Reference Field Code: 88
Reference Field: IGRF-1995
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: 9787983
Departure Base Station Description: DOD2080-9 PAPEETE,TAHITI
Arrival Base Station Gravity: 9795353
Arrival Base Station Description: SIO MARFAC PIER SAN DIEGO,CA
Additional Documentation: PROCESSED BY GEOLOGICAL DATA CENTER, SCRIPPS INSTITUTION OF OCEANOGRAPHY, SEABEAM 2000 MALFUNCTIONED AFTER ~0600Z/21JUN1997; DEPTHS CORRECTED FOR 5, METER SHIP DRAFT; GRAVITY: 1 SEC METER COUNTS FILTERED WITH 99 SEC STD.DEV. GAUSSIAN CONV.WINDOW. FREE AIR ANOMALY SPIKES MAY BE PRESENT BECAUSE SAME, FILTER NOT USED FOR NAV. FOLLOWING INFO FROM MULTIBEAM BATHYMETRY: Heading, Sensor Sperry MK 23 Gyro; Vertical reference unit sensor Datawell Hippy Model, 120; Navigation: Horizontal_Datum WGS84; Surface sound velocity sensor.
Number of Data Records: 41815
Min/Max Data Record:
Date: 1997 05 31
Latitude: -18.17629
Longitude: -149.58700
Bathymetry, 2- Way Traveltime: 004800
Bathymetry, Corrected Depth: 367.0
Observed Gravity: 9779688
Free-Air Anomaly: -1116
Min/Max Data Record:
Date: 1997 06 30
Latitude: +32.61983
Longitude: -109.90954
Bathymetry, 2- Way Traveltime: 066587
Bathymetry, Corrected Depth: 5013.0
Observed Gravity: 9795254
Free-Air Anomaly: +1720