Survey Identifier: CMAPSU4N
Format Acronym: MGD77
Data Center File Number: 03020011
Parameters Surveyed Code: 55511
File Creation Date (yyyymmdd): 19800208
Source Institution: NOAA/NOS
Country: USA
Platform Name: SURVEYOR
Platform Type Code: 1
Platform Type: SHIP
Project: OPR 421 PACIFIC SEA MAP
Funding: NOS/IDOE
Survey Departure Date (yyyymmdd): 19630608
Port of Departure: ADAK USA
Survey Arrival Date (yyyymmdd): 19640729
Port of Arrival: ALEUTIAN ISL USA
Navigation Instrumentation: LORAN-C/LORAN-A/ CELESTIAL/SATELLITE
Bathymetry Instrumentation: 12 KHZ TRANSDUCER (PDC)
Additional Forms of Bathymetric Data: STRIP CHARTS/PUNCHED PAPER TAPE
Magnetics Instrumentation: VARIAN TOTAL-FIELD PRECESSION MAGNET.
Additional Forms of Magnetics Data: ANALOG STRIP CHART, PUNCHED TAPE
Gravity Instrumentation: LACOSTE-ROMBERG GIMBALED S.S. METER
Additional Forms of Gravity Data: STRIP CHARTS/MAGNETIC TAPE
Topmost Latitude of Survey: +55
Bottommost Latitude: +54
Leftmost Longitude: -169
Rightmost Longitude: -166
General Digitizing Rate of Bathymetry: 334
Interpolation Scheme: 5-MINUTE INT. AND AT PEAKS, TROUGHS AND STEEP SLOPES
General Digitizing Rate of Magnetics: 684
Reference Field Code: 03
Reference Field: IGRF-65
General Digitizing Rate of Gravity: 837
Theoretical Gravity Formula Code: 2
Theoretical Gravity Formula: INTERNAT'L 1930
Additional Documentation: WARNING: MGD77 DATA RECORDS FOR THIS CRUISE MAY CONTAIN NEGATIVE GRAVITY, ANOMALY VALUES THAT SHOULD BE POSITIVE.
Number of Data Records: 376
Min/Max Data Record:
Date: 1963 06 08
Latitude: +54.00000
Longitude: -168.64400
Bathymetry, 2- Way Traveltime: 001065
Bathymetry, Corrected Depth: 80.0
Magnetics Total Field, 1st Sensor: 501670
Magnetics Residual Field: -03650
Free-Air Anomaly: -1300
Min/Max Data Record:
Date: 1964 07 29
Latitude: +54.53800
Longitude: -166.00000
Bathymetry, 2- Way Traveltime: 030637
Bathymetry, Corrected Depth: 2266.0
Magnetics Total Field, 1st Sensor: 506560
Magnetics Residual Field: +00080
Free-Air Anomaly: -0010