Index Catalog // ScholarsArchive@OSU

Creator:: Kelly, S. M., Nash, J. D., and Kunze, E.
Abstract:: The method used to separate surface and internal tides ultimately defines properties such as internal‐tide generation and the depth structure of internal‐tide energy flux. Here, we provide a detailed analysis of several surface‐/internal‐tide decompositions over arbitrary topography. In all decompositions, surface‐tide velocity is expressed as the depth average of total...
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Full Text:: energy over topography S. M. Kelly,1 J. D. Nash,1 and E. Kunze2 Received 6 July 2009; revised 24

Creator:: Benoit-Bird, Kelly J., Cowles, Timothy J., and Wingard, Christopher E.
Abstract:: Physical, optical, and acoustical data from Monterey Bay, California, USA, describing the distributions of phytoplankton, zooplankton, and small fish as well as gradients in the physical habitat were used to examine the interactions between vertically compressed plankton structures (thin layers), their consumers, and the local physical forces they experience. The...
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Full Text:: Benoit-Bird, Kelly J., Timothy J. Cowles, and Christopher E

Creator:: Sherrell, R. M., Boyle, E. A., Harris, N. R., and Falkner, Kelly
Abstract:: We present a decade-long (1981–1990) high-resolution (subseasonal) record of Pb and Cd concentrations and Pb isotopic composition in a series of 119 snow samples from a 6-m snow pit at Summit, Greenland. Both metals show order of magnitude seasonal variability, with maxima in spring of every year, coinciding with sulfate...
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Full Text:: University, 71 Dudley Road, New Brunswick, New Jersey 08901- 8521, USA (sherrell@imcs.rutgers.edu) E. A

Creator:: Kelly, S. M. and Nash, J. D.
Abstract:: Internal‐tide generation is usually predicted from local topography, surface tides, and stratification. However, internal tides are often observed to be unrelated to local spring‐neap forcing, appearing intermittently in 3–5 day bursts. Here we suggest a source of this intermittency by illustrating how remotely‐generated shoaling internal tides induce first‐order changes in...
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Full Text:: affected and may result in resonance. Citation: Kelly, S. M., and J. D. Nash (2010), Internal‐tide

Creator:: Au, Whitlow W. L. and Benoit-Bird, Kelly J.
Abstract:: Broadband simulated dolphin echolocation signals were used to measure the ex situ backscatter properties of mesopelagic boundary community MBC in order to gain a better understanding of the echolocation process of spinner dolphins foraging on the MBC. Subjects were captured by trawling with a 2-m-opening Isaacs-Kidd Midwater Trawl. Backscatter measurements...
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Full Text:: Kelly J. Benoit-Bird College of Atmospheric and Oceanic Sciences, 104 COAS Administration Building

Creator:: Benoit-Bird, Kelly J. and Au, Whitlow W. L.
Abstract:: Groups of spinner dolphins have been shown to cooperatively herd small prey. It was hypothesized that the strong group coordination is maintained by acoustic communication, specifically by frequency-modulated whistles. Observations of groups of spinner dolphins foraging at night within a sound-scattering layer were made with a multibeam echosounder while the...
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Full Text:: dolphins Kelly J. Benoit-Birda� College of Oceanic and Atmospheric Sciences, Oregon State University, 104

Creator:: Benoit-Bird, Kelly J. and Au, Whitlow W. L.
Abstract:: Sonar techniques were used to quantitatively observe foraging predators and their prey simultaneously in three dimensions. Spinner dolphins foraged at night in highly coordinated groups of 16–28 individuals using strict four-dimensional patterns to increase prey density by up to 200 times. Herding exploited the prey’s own avoidance behavior to achieve...
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Full Text:: dolphin, Stenella longirostris Kelly J. Benoit-Birda� College of Oceanic and Atmospheric Sciences

Creator:: Benoit-Bird, Kelly J. and Gilly, William F.
Abstract:: We used split-beam acoustic techniques to observe free-swimming of jumbo squid Dosidicus gigas during 4 cruises in the Gulf of California. Four-dimensional spatio-temporal data revealed that at night in shallow water, jumbo squid were using ascending, spiral-like swimming paths to emerge from extremely dense aggregations, and were likely foraging on...
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Full Text:: Coordinated nocturnal behavior of foraging jumbo squid Dosidicus gigas Kelly J. Benoit-Bird1,*, William F

Creator:: Benoit-Bird, Kelly J., Au, Whitlow W. L., and Wisdom, Daniel W.
Abstract:: The roles of nocturnal light and lunar phase in the diel migration of micronekton from a nearshore scattering layer were examined. Migration patterns were measured over six complete lunar cycles using moored upwardlooking echosounders while nocturnal surface irradiance was recorded. We hypothesized that animals would remain at a constant isolume...
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Full Text:: Benoit-Bird, Kelly J., Whitlow W. L. Au, and Daniel W. Wisdom

Creator:: Benoit-Bird, Kelly J., Au, Whitlow W. L., and Kastelein, Ronald A.
Abstract:: The hypothesis that sounds produced by odontocetes can debilitate fish was examined. The effects of simulated odontocete pulsed signals on three species of fish commonly preyed on by odontocetes were examined, exposing three individuals of each species as well as groups of four fish to a high-frequency click of a...
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Full Text:: hypothesis: No stunning results Kelly J. Benoit-Bird College of Oceanic and Atmospheric Sciences, Oregon

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