Survey Identifier: A118L36

Format Acronym: MGD77
Data Center File Number: 17080016
Parameters Surveyed Code: 51111
File Creation Date (yyyymmdd): 19900315
Country: USA
Platform Name: R/V ATLANTIS II
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): LAVERN KULM
Project: A118L36
Funding: NSF
Survey Departure Date (yyyymmdd): 19880618
Port of Departure: ASTORIA, OREGON
Survey Arrival Date (yyyymmdd): 19880702
Port of Arrival: ASTORIA, OREGON
Navigation Instrumentation: GPS, LORAN-C, TRANSIT SATELLITE
Geodetic Datum/Position: PRIM-LORAN
Bathymetry Instrumentation: SEA BEAM vertical beam
Additional Forms of Bathymetric Data: ANALOG
Topmost Latitude of Survey: +46
Bottommost Latitude: +44
Leftmost Longitude: -126
Rightmost Longitude: -124
General Digitizing Rate of Bathymetry: 014
General Sampling Rate of Bathymetry: VAR-W-DEPTH
Assumed Sound Velocity: 15000
Interpolation Scheme: 1 MINUTE AVERAGES
Additional Documentation: NGDC has multibeam bathymetric data for this cruise, however the tracklines, found here in GEODAS do not exactly correspond to the multibm data available. Other data reported to have been collected on this cruise were Alvin dives, Sea Beam backscatter, coring, Deep Tow seismics, dredging. Navigation for the multibeam bathymetry was adjusted to match bathymetry
Number of Data Records: 9358

Min/Max Data Record:
Date: 1988 06 19
Latitude: +44.51503
Longitude: -125.57598
Bathymetry, 2- Way Traveltime: 008080
Bathymetry, Corrected Depth: 600.0

Min/Max Data Record:
Date: 1988 07 02
Latitude: +45.69535
Longitude: -124.78682
Bathymetry, 2- Way Traveltime: 038867
Bathymetry, Corrected Depth: 2892.0