Record Details
Temporal variations of beam attenuation coefficient on the Continental Rise off Nova Scotia
ScholarsArchive at Oregon State University
| Field | Value |
|---|---|
| Title | Temporal variations of beam attenuation coefficient on the Continental Rise off Nova Scotia |
| Names |
Pak, Hasong
(creator) Zaneveld, J. Ronald (creator) |
| Date Issued | 1983-05-20 (iso8601) |
| Note | Copyrighted by American Geophysical Union. |
| Abstract | Two separate time series observations of light transmission in the bottom water on the Continental Rise off Nova Scotia show fluctuations of light transmission in a wide range, 0-50% transmission at λ = 660 nm. The range corresponds approximately to SPM concentrations of 12 mg/l to 150 μg/l. The former is the maximum value determined by filtration (Biscaye, 1980), and the latter is determined by an empirical relation between beam attenuation coefficient and particle volume determined by a particle counter. Nepheloid layers of significant turbidity, called benthic storms, were observed in 30 and 10% of the time, respectively, for the two observations, and each storm lasted 2-5 days. High frequency fluctuations represented by pulse lengths less than 10 min were observed superimposed on the low frequency fluctuations during 16 and 4% of the time. Both the major storms and the high frequency pulses are interpreted to be a result of resuspension of bottom sediments at varying distances from the instrument; the high frequency pulses are thought to be a result of erosion at a relatively short distance, while the low frequency fluctuations result from erosion at greater distance. |
| Genre | Article |
| Identifier | Pak, H., and J. Zaneveld (1983), Temporal Variations of beam attenuation coefficient on the Continental Rise off Nova Scotia, J. Geophys. Res., 88(C7), 4427-4432. |
