Survey Identifier: AVON09MV


Format Acronym: MGD77
Data Center File Number: 15020193
Parameters Surveyed Code: 51511
Source Institution: SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country: USA
Platform Name: R/V MELVILLE
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): CHRIS GOLDFINGER,OREGON ST.U.
Project: AVON EXPEDITION LEG 9
Funding: NSF
Survey Departure Date (yyyymmdd): 19990707
Port of Departure: ASTORIA,OREGON
Survey Arrival Date (yyyymmdd): 19990802
Port of Arrival: EUREKA,CALIFORNIA
Navigation Instrumentation: TRIMBLE TASMAN P(Y) GPS
Geodetic Datum/Position: LINEAR FIT TO 60 SEC FIXES
Bathymetry Instrumentation: SEABEAM 2000 w/SIDESCAN
Additional Forms of Bathymetric Data: ANAL.REC.,35MM FILM,DIGITAL TAPE
Gravity Instrumentation: BELL BGM-3 METER
Additional Forms of Gravity Data: DIGITAL TAPE
Topmost Latitude of Survey: 49
Bottommost Latitude: 38
Leftmost Longitude: -128
Rightmost Longitude: -123
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 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: 980712
Departure Base Station Description: ASTORIA,OREGON
Arrival Base Station Gravity: ??????
Arrival Base Station Description: EUREKA,CALIFORNIA
Additional Documentation: PROCESSED BY GEOLOGICAL DATA CENTER, SCRIPPS INSTITUTION OF OCEANOGRAPHY, 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.
Number of Data Records: 37440

Min/Max Data Record:
Date: 1999 07 07
Latitude: +38.63547
Longitude: -127.28496
Bathymetry, 2- Way Traveltime: 000360
Bathymetry, Corrected Depth: 27.0
Observed Gravity: 9799517
Free-Air Anomaly: -0963

Min/Max Data Record:
Date: 1999 08 02
Latitude: +48.38890
Longitude: -123.83800
Bathymetry, 2- Way Traveltime: 048440
Bathymetry, Corrected Depth: 3615.0
Observed Gravity: 9809434
Free-Air Anomaly: +0243