Survey Identifier: L279NC
Format Acronym: MGD77
Data Center File Number: 06050046
Parameters Surveyed Code: 35331
File Creation Date (yyyymmdd): 19870609
Source Institution: USGS Branch of Pacific Marine Geology
Country: United States
Platform Name: Lee
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): Gary Greene
Survey Departure Date (yyyymmdd): 19791030
Port of Departure: LEAVE REDWOOD CITY
Survey Arrival Date (yyyymmdd): 19791105
Port of Arrival: AR SAN DIEGO
Navigation Instrumentation: MINIRANGER,SATNAV,LORAN C
Geodetic Datum/Position: PRIM-MINIRANGER SEC-INTEGRATED NAV
Bathymetry Instrumentation: 12KHZ NARROW 1 SEC
Additional Forms of Bathymetric Data: RECORDER ROLLS
Magnetics Instrumentation: PROTON PRECESSION MAG-GEOMETRICS G-801
Additional Forms of Magnetics Data: ANALOG RECORDS
Gravity Instrumentation: L+R S-53
Additional Forms of Gravity Data: ANALOG RECORDS
Seismic Instrumentation: SINGLE CHANNEL,UNIBOOM/3.5KHZ WIDE 1 SEC
Formats of Seismic Data: RECORDER ROLLS
Topmost Latitude of Survey: +38
Bottommost Latitude: +32
Leftmost Longitude: -124
Rightmost Longitude: -117
General Sampling Rate of Bathymetry: 20/SECONDS
Assumed Sound Velocity: 14630
General Digitizing Rate of Magnetics: 98
General Sampling Rate of Magnetics: 04
Magnetic Sensor Tow Distance: 213
Reference Field Code: 04
Reference Field: IGRF-75
Method of Applying Residual Field: LINEAR INTERP. BETWEEN NAV POINTS
General Sampling Rate of Gravity: 15
Theoretical Gravity Formula Code: 2
Theoretical Gravity Formula: INTERNAT,IAG 1967
Reference System Code: 3
Reference System: SYSTEM IGSN-71
Corrections Applied: DRIFT CORRECTIONS
Number of Data Records: 780
Min/Max Data Record:
Date: 1979 10 30
Latitude: +32.61968
Longitude: -123.12368
Magnetics Total Field, 1st Sensor: 465084
Magnetics Residual Field: -42270
Min/Max Data Record:
Date: 1979 11 05
Latitude: +37.82050
Longitude: -117.17273
Magnetics Total Field, 1st Sensor: 595772
Magnetics Residual Field: +87844