1974 NW Africa Hydrographic Data

CTD Data

• CTD data off the NW African coast collected on a cruise in 1974.
• Files are in ascii columnar format with columns of station number, fractional year, decimal julian day, latitude, longitude, station bottom depth, depth, temperature (° C), salinity (‰), potential temperature (°C), sigma-t, specific volumn anamoly (CL/T), dynamic height (J/KG), station name [if named in original data file].
• Missing or known bad values are specified with negative 9(s).
• Salinity was computed using equations from Perkin and Walker, 1971 (Salinity calculation from in situ measurements. Marine Sciences Branch. Environment Canada. Pacific Marine Science Report 71-1).

Current Meter Data

• Link to current meter data: http://cmrecords.net/osu/atlantic/joint1/joint1.htm.
• Current meter data format is described at: http://cmrecords.net/osu/howto.htm

CTD Data Link

JOINT1 : 1974

References

OSU 1974 NW Africa Data
Papers:

Mittelstaedt, E., Pillsbury R. D. and R. L. Smith. 1975. Flow patterns in the Northwest African upwelling area. Results of measurements along 21° 40' N during February - April 1974. JOINT-1. Deutshe hydrographische Zeitschrift, 28, 145-167.

Huyer, A. 1976. A comparison of upwelling events in two locations: Oregon and Northwest Africa. J. Marine Res., 34(4):531-546.

Barton, E. D., Huyer, A. and R. L. Smith. 1977. Temporal variations observed in the hydrographic regime near Cabo Corveiro in the northwest African upwelling region, February to April 1974. Deep-Sea Res., 24:7-23.

Halpern, D., Smith R. L. and E. Mittelstaedt. 1977. Cross-shelf circulation on the continental shelf off Northwest
Africa during upwelling. J. Mar. Res., 35(4):787-796.

Badan-Dangon, A., Brink, K. H. and R. L. Smith. 1986. On the dynamic structure of the midshelf water column off
Northwest Africa, Continental Shelf Research 5:629-644.


Data Reports:

Barton, E. D., M. R. Stevenson and W. E. Gilbert. 1975. CTD/STD Measurements off the NW African Coast Near Cabo Conveiro During JOINT-1, R/V Gilliss Cruise GS7401, Feb. 9 - Apr. 23, 1974. School of Oceanography, Oregon State University, Ref. 75-3.

Barton, E. D., R. D. Pillsbury and R. L. Smith. 1975. A Compendium of Physical Observations From Joint-1: Vertical Sections of Temperature, Salinity and Sigma-t from R/V Gilliss Data and Low-Pass Filtered Measurements of Wind and Currents. School of Oceanography, Oregon State University, Ref. 75-17.