Survey Identifier: CMAPPI4S


Format Acronym: MGD77
Data Center File Number: 03010006
Parameters Surveyed Code: 55511
File Creation Date (yyyymmdd): 19800208
Source Institution: NOAA/NOS
Country: UNITED STATES
Platform Name: PIONEER
Platform Type Code: 1
Platform Type: SHIP
Project: OPR-421 PACIFIC SURVEY SEAMAP, CMAPPI4S
Survey Departure Date (yyyymmdd): 19610709
Port of Departure: KODIAK USA
Survey Arrival Date (yyyymmdd): 19630525
Port of Arrival: ALEUTIAN ISL USA
Navigation Instrumentation: LORAN C/ LORAN A/ CELESTIAL/ SATELLITE
Geodetic Datum/Position: LORAN C
Bathymetry Instrumentation: PDR
Magnetics Instrumentation: VARIAN (V-4931)
Additional Forms of Magnetics Data: STRIP CHARTS/ PUNCHED TAPE
Gravity Instrumentation: LACOSTE-ROMBERG (S-11)
Additional Forms of Gravity Data: STRIP CHARTS
Topmost Latitude of Survey: +54
Bottommost Latitude: +48
Leftmost Longitude: -177
Rightmost Longitude: -166
Interpolation Scheme: 5-MIN INTERVALS, PEAKS, TROUGHS, AND STEEP SLOPES
Magnetic Sensor Tow Distance: 0140
Reference Field Code: 03
Reference Field: IGRF-65
Theoretical Gravity Formula Code: 2
Theoretical Gravity Formula: INTERNAT'L 1930
Corrections Applied: DRIFT: <+2.4 MGALS/MO.
Additional Documentation: WARNING: MGD77 DATA RECORDS FOR THIS CRUISE MAY CONTAIN NEGATIVE GRAVITY, ANOMALY VALUES THAT SHOULD BE POSITIVE.
Number of Data Records: 2135

Min/Max Data Record:
Date: 1961 07 09
Latitude: +48.01300
Longitude: -176.95000
Bathymetry, 2- Way Traveltime: 002985
Bathymetry, Corrected Depth: 219.0
Magnetics Total Field, 1st Sensor: 458410
Magnetics Residual Field: -09060
Free-Air Anomaly: -2060

Min/Max Data Record:
Date: 1963 05 25
Latitude: +53.15800
Longitude: -166.00300
Bathymetry, 2- Way Traveltime: 096452
Bathymetry, Corrected Depth: 7326.0
Magnetics Total Field, 1st Sensor: 498940
Magnetics Residual Field: +04950
Free-Air Anomaly: +0000