Survey Identifier: TAG71IDO
Format Acronym: MGD77
Data Center File Number: 03030005
Parameters Surveyed Code: 55533
File Creation Date (yyyymmdd): 19800211
Source Institution: NOAA/AOML
Country: USA
Platform Name: DISCOVERER
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): LATTIMORE,RONA,BUTLER
Project: TRANS-ATLANTIC GEOTRAVERSE, RP-8-DI-71, 3 "PHASES" (LEGS)
Survey Departure Date (yyyymmdd): 19710408
Port of Departure: MIAMI, USA
Survey Arrival Date (yyyymmdd): 19710615
Port of Arrival: LAS PALMAS, CANARY IS
Navigation Instrumentation: SATELLITE/ OMEGA FIXES
Bathymetry Instrumentation: PDR, LODAR
Magnetics Instrumentation: VARIAN PROTON MAGNETOMETER
Additional Forms of Magnetics Data: ANALOG RECORDS
Topmost Latitude of Survey: +36
Bottommost Latitude: +19
Leftmost Longitude: -077
Rightmost Longitude: -015
General Digitizing Rate of Bathymetry: 050
Interpolation Scheme: 5 MIN INTERVALS,PEAKS,TROUGHS,AND STEEP SLOPES
General Digitizing Rate of Magnetics: 35
General Sampling Rate of Magnetics: 60
Reference Field Code: 03
Reference Field: IGRF-65
General Digitizing Rate of Gravity: 214
General Sampling Rate of Gravity: 00
Theoretical Gravity Formula: SEE ADD DOC/23
Additional Documentation: PHASE=LEG, LEG 1: MIAMI-LAS PALMAS, CANARY ISLANDS: 710406-710629, LEG 2: LAS PALMAS-LAS PALMAS: 710504-710521, LEG 3: LAS PALMAS-MIAMI: 710526-710618, GRAV DATA IN ACCORD. W/ GEN. INTRUCT. FOR GRAV. OBSERV. AT SEA (OCT.66), WARNING: MGD77 DATA RECORDS FOR THIS CRUISE MAY CONTAIN NEGATIVE GRAVITY, ANOMALY VALUES THAT SHOULD BE POSITIVE.
Number of Data Records: 39169
Min/Max Data Record:
Date: 1971 04 08
Latitude: +19.44670
Longitude: -76.15330
Bathymetry, 2- Way Traveltime: 000375
Bathymetry, Corrected Depth: 28.0
Magnetics Total Field, 1st Sensor: 355800
Magnetics Residual Field: -09020
Free-Air Anomaly: -1141
Min/Max Data Record:
Date: 1971 06 15
Latitude: +35.74270
Longitude: -15.82670
Bathymetry, 2- Way Traveltime: 086000
Bathymetry, Corrected Depth: 6552.0
Magnetics Total Field, 1st Sensor: 548000
Magnetics Residual Field: +10250
Free-Air Anomaly: +0000