Survey Identifier: L3A81NC
Format Acronym: MGD77
Data Center File Number: 06050052
Parameters Surveyed Code: 05500
File Creation Date (yyyymmdd): 19870617
Source Institution: USGS Branch of Pacific Marine Geology
Country: United States
Platform Name: Lee
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): Dave McCulloch
Survey Departure Date (yyyymmdd): 19810416
Port of Departure: PORT HUENEME, CALIFORNIA
Survey Arrival Date (yyyymmdd): 19810426
Port of Arrival: REDWOOD CITY, CALIFORNIA
Navigation Instrumentation: SATNAV,
Bathymetry Instrumentation: 12KHZ NARROW 1 SEC, 3.5KHZ WIDE 1 SEC
Additional Forms of Bathymetric Data: RECORDER ROLLS
Seismic Instrumentation: UNIBOOM, SINGLE CHANNEL
Topmost Latitude of Survey: +38
Bottommost Latitude: +34
Leftmost Longitude: -123
Rightmost Longitude: -119
General Sampling Rate of Bathymetry: 20/SECONDS
Assumed Sound Velocity: 14630
General Digitizing Rate of Magnetics: 9
General Digitizing Rate of Gravity: 011
Departure Base Station Gravity: 9688458
Departure Base Station Description: PORT HUENEME, CALIFORNIA
Arrival Base Station Gravity: 9688435
Arrival Base Station Description: REDWOOD CITY, CALIFORNIA
Number of Data Records: 14316
Min/Max Data Record:
Date: 1981 04 16
Latitude: +34.08567
Longitude: -122.64710
Magnetics Total Field, 1st Sensor: 474885
Magnetics Residual Field: -26681
Observed Gravity: 9796682
Free-Air Anomaly: -0757
Min/Max Data Record:
Date: 1981 04 26
Latitude: +37.81914
Longitude: -119.20955
Magnetics Total Field, 1st Sensor: 595350
Magnetics Residual Field: +97985
Observed Gravity: 9799677
Free-Air Anomaly: +0373