Field Activity Details for field activity G7580AT

AKA: DSDP75GC

Other ID: G-75-80-AT

Status: Completed

Organization(s): USGS, Pacific Coastal and Marine Science Center

Funding Program(s):

Principal Investigator(s):

Affiliate Investigator(s): W. Hay and J. Sibvet

Information Specialist(s):

Data Type(s): Electro-Magnetic: Magnetics, Location-Elevation: Navigation, Sampling: Geology, Sonar: Single Beam, Seismics: Sub Bottom Profiler

Scientific Purpose/Goals:

Vehicle(s):

Start Port/Location: Walvis Bay, south Africa

End Port/Location: Recife, Brazil

Start Date: 1980-07-27

End Date: 1980-09-21

Equipment Used: magnetometer, navigation, drillcore, 3.5khz

Information to be Derived:

Summary of Activity and Data Gathered:

Staff:

Affiliate Staff:

Notes: created from InfoBank.
Publication:
Core Data from the Deep Sea Drilling Project, Leg 75:
http://www.ngdc.noaa.gov/mgg/geology/dsdp/data/75/leg75.htm
NGDC overview:
! Converted to time format with year at start.
!
DATA COLLECTION OVERVIEW (use NGDC GEODAS CD to retrieve data)

MCG Data Collection ID --- G7580AT
Institution Data Collection ID --- DSDP75GC
NGDC ID --- 15050074
Funding --- (unspecified)
Project, Cruise & Leg --- DEEPSEA DRILL.LG75
Study region --- +35.00000,-22.00000, -74.00000, +13.00000
Chief Scientist(s) --- HAY W.,SIBVET J.
Name of vessel --- D/V GLOMAR CHALLENGER (surface ship)
Date field data collection started --- 07/27/80 WALVIS BAY,AFRICA
Date field data collection ended --- 09/21/80 NORFOLK,VIRGINIA
Parameters surveyed ---
Bathymetry: surveyed, contained in data file
Magnetics: surveyed, contained in data file
Gravity: not surveyed
High-resolution seismics: surveyed, but not contained in data file
Deep penetration seismics: surveyed, but not contained in data file
Format ---

(I1,A8,F5.2,4I2,F5.3,F8.5,F9.5,I1,F6.4,F6.1,I2,i1,3F6.1,I1,F5.1,F6.0,F7.1,F6.1,F5.1,A8,4I1)
Date of data input to NGDC --- 10/07/81
Contributing institution --- SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country --- USA

Navigation instrumentation --- SATNAV,MANUAL ENTRY GYRO AND SPD CHANGES
Position determination method --- LINEAR INTERP.BETWEEN ADJACENT FIXES

Bathymetry instrumentation --- 3.5-12KHZ/EDO 550A RECORDERS/WIDE BEAM
Additional forms of bathymetric data --- ANAL.RECORDS,CARDS,35MMFILM
General rate of bathymetry in file --- 5.0 minutes
General collection rate of bathymetry --- 1SECONDSWEEP
Assumed sound velocity --- 1500.0 m/sec
Bathymetric datum code --- No correction applied (sea level)
Bathmetry interpolation scheme --- 5 MINUTE INTERVAL

Magnetics instrumentation --- GEOMETRICS MAGNETOMETER MOD G-801/3
Additional forms of magnetics data --- ANAL.RECORDS,CARDS,35MMFILM
General rate of magnetics in file --- 5.0 minutes
General collection rate of magnetics --- 6 seconds
Magnetic sensor tow distance --- (unspecified)
Magnetic sensor depth --- (unspecified)
Two sensor horizontal separation --- (unspecified)
Residual magnetics reference field --- IGRF-75
Method of applying residual field --- LIN. INTERP.POINTS WITHIN ONE DEGREE
SQUARE

Seismic instrumentation --- 20TO300CU.IN.AIRGUN,10-300HZ,EDO 550 REC
Formats of seismic data --- ANAL.RECORDS,35MM MICROFILM

Location:

Atlantic Ocean

Platform(s):

Publications

Portals/Viewers

Data Acquired