Survey Identifier: WEST11MV
Format Acronym: MGD77
Data Center File Number: 15020144
Parameters Surveyed Code: 51311
File Creation Date (yyyymmdd): 19
Source Institution: SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country: USA
Platform Name: R/V MELVILLE
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): D.LUTHER
Project: WESTWARD EXPEDITION LEG 11 NSF
Survey Departure Date (yyyymmdd): 19950318
Port of Departure: HOBART,TASMANIA
Survey Arrival Date (yyyymmdd): 19950414
Port of Arrival: HOBART,TASMANIA
Navigation Instrumentation: GPS,TRIMBLE MOD. 4000AX
Geodetic Datum/Position: LINEAR INTERP.BETWEEN ADJACENT FIXES
Bathymetry Instrumentation: SEABEAM 2000 w/ SIDESCAN
Additional Forms of Bathymetric Data: ANAL.REC,35MM FILM,DIGITAL MAG. TAPE
Magnetics Instrumentation: NONE COLLECTED
Gravity Instrumentation: BELL BGM-3 METER
Additional Forms of Gravity Data: DIGITAL TAPE
Seismic Instrumentation: NONE COLLECTED
Topmost Latitude of Survey: -42
Bottommost Latitude: -55
Leftmost Longitude: +141
Rightmost Longitude: +148
General Digitizing Rate of Bathymetry: 010
General Sampling Rate of Bathymetry: 1PING IN H2O
Assumed Sound Velocity: 15000
Interpolation Scheme: 1 MINUTE VALUES EXTRACTED FROM SEABEAM VERTICAL BEAM
General Digitizing Rate of Magnetics: 010
General Sampling Rate of Magnetics: 06
Reference Field Code: 03
Reference Field: IGRF-1990
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: 9804178
Departure Base Station Description: DOD 3678-7 HOBART, TASMANIA
Arrival Base Station Gravity: 9804178
Arrival Base Station Description: DOD3678-7 HOBART, TASMANIA
Additional Documentation: PROCESSED BY GEOLOGICAL DATA CENTER, SCRIPPS INSTITUTION OF OCEANOGRAPHY, DEPTHS CORRECTED FOR 5 METER SHIP DRAFT. NAVIGATION: DR BETWEEN 1 MINUTE, INTERVAL GPS FIXES. GPS PRESENT 24 HRS/DAY. CAUTION: GRAVITY METER BEGAN, MALFUNCTIONING BEFORE THE END OF THE LEG. GRAVITY: 1 SEC METER COUNTS FILTERED, WITH 99 DEC STD.DEV. GAUSSIAN CONVOLUTION WINDOW. FREE AIR ANOMALY SPIKES, PRESENT BECAUSE SAME FILTER NOT USED FOR NAVIGATION. FOLLOWING INFO FROM, MULTIBEAM BATHYMETRY: Navigation: Horizontal_Datum WGS84.
Number of Data Records: 39718
Min/Max Data Record:
Date: 1995 03 18
Latitude: -54.54631
Longitude: +141.30814
Bathymetry, 2- Way Traveltime: 000587
Bathymetry, Corrected Depth: 44.0
Min/Max Data Record:
Date: 1995 04 14
Latitude: -42.89687
Longitude: +147.52223
Bathymetry, 2- Way Traveltime: 068440
Bathymetry, Corrected Depth: 5140.0