Meteorological and oceanographic measurements during the ASREX III field experiment : cruise and data report
Citable URI
https://hdl.handle.net/1912/471Location
34°N, 70°WDOI
10.1575/1912/471Keyword
Meteorology; Oceanography; Moored instrument measurements; Mid-Atlantic; Knorr (Ship : 1970-) Cruise; Edwin Link (Ship) CruiseAbstract
The Third Acoustic Surface Reverberation Experiment (AS REX III) took place from December 1993 to
March 1994 at Site L (34°N, 70°W) in the mid-Atlantic. As part of this experiment, two moorings were
deployed to measure the environmental background. A meteorological and oceanographic mooring was
deployed to characterize the surface wind stress, buoyancy flux, and the current and temperature structure
over the top 500 meters. A Seatex Wavescan buoy was deployed to characterize the directional wave
spectrum. This report presents results from these moorings. Wind speeds up to 25 m/s were seen, with
significant heat losses (up to 1050 W/m2) when cold continental air moved out over the warm Atlantic. The
wave heights ranged up to 8 m, with significant wave heights of several meters persisting for relatively long
periods. Wave height and period, nondirectional spectra, directional spectra and a typology of wave events are
presented and related to surface forcing.
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