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Creator:: Dewey, Richard K. and Moum, James N.
Abstract:: Microstructure observations near upwelled fronts indicate considerable variation in the structure of vertical mixing across the frontal region. Observations of cool filaments off northern California indicate that within the cool (dense) core of filaments the raised pycnocline inhibits the penetration to middepths of surface-generated mixing. The microstructure profiles are used...
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Full Text:: Mixing RICHARD K. DEWEY AND JAMES N. MOUM College of Oceanography, Oregon State University, Corvallis

Creator:: Ruzicka, James J., Daly, Elizabeth A., and Brodeur, Richard D.
Abstract:: Interannual variability in salmon (Oncorhynchus spp.) production in the northeast Pacific is understood to be driven by oceanographic variability and bottom-up processes affecting prey availability to juvenile salmon. Scyphozoan jellyfish have an important role in shaping the pathways of energy flow through pelagic food webs. While jellyfish obtain high production...
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Creator:: Briscoe, Melbourne, Glickson, Deborah, Roberts, Susan, Spinrad, Richard, and Yoder, James
Abstract:: The objective of this paper is to look at past assessments and available data to examine the match (or mismatch) between university curricula and programs available to graduate students in the ocean sciences and the career possibilities available to those students. We conclude there is a need for fundamental change...
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Full Text:: , Susan Roberts, Richard Spinrad, and James Yoder GRADUATE EDUCATION IN THE OCEAN SCIENCES ABSTRACT. The

Creator:: Dewey, Richard K., Moum, James N., and Caldwell, Douglas R.
Abstract:: This paper presents observations of a dynamic minifilament and summarizes the findings of three microstructure surveys across and within the meandering current structures of the Coastal Transition Zone (CTZ). An actively turbulent minifilament is discussed and possible consequences of the small-scale processes with regard to frontal dynamics are examined. Four...
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Full Text:: Microstructure Activity Within a Minifilament in the Coastal Transition Zone RICHARD K. DEWEY Science

Creator:: Spinrad, Richard W., Zaneveld, J. Ronald, and Kitchen, James C.
Abstract:: Light transmission profiles have been used to study the optical properties of the suspended particles which are characteristic of the area of the Scotian Rise in the North Atlantic Ocean. This area is typified by very strong bottom currents and a highly variable bedform morphology. A good correlation (r =...
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Full Text:: Particles in the Benthic Nepheloid Layer of the Scotian Rise RICHARD W. SPINRAD Bigelow Laboratory for

Creator:: Brodeur, Richard D., Barceló, Caren, Robinson, Kelly L., Daly, Elizabeth A., and Ruzicka, James J.
Abstract:: As in many regions of the world, the shelf waters of the western United States have experienced large increases and high interannual variability in jellyfish populations in recent decades. The northern California Current (NCC) is a productive upwelling zone that is home to large populations of medusae, particularly during some...
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Full Text:: California Current region Richard D. Brodeur1,*, Caren Barceló2, Kelly L. Robinson3, Elizabeth A. Daly4

Creator:: Dewey, Richard K., Moum, James N., Paulson, Clayton A., Caldwell, Douglas R., and Pierce, Stephen D.
Abstract:: Repeated microstructure transects across filaments in the coastal transition zone (CTZ) have Revealed fundamental structure and dynamics of the complicated features. The measurements allow detailed momentum and vorticity analyses and provide a possible explanations for structural asymmetry of the fronts. Observations made between July 2 and July 23, 1988, along...
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Full Text:: Coastal Filament RICHARD K. DEWEY, 1 JAMES N. MOUM, CLAYTON A. PAULSON, DOUGLAS R. CALDWELL, AND

Creator:: Robinson, Kelly L., Ruzicka, James J., Hernandez, Frank J., Graham, William M., Decker, Mary Beth, Brodeur, Richard D., and Sutor, Malinda
Abstract:: Fishery management production models tend to stress only the elements directly linked to fish (i.e. fish, fish food, and fish predators). Large coastal jellyfish are major consumers of plankton in heavily fished ecosystems; yet, they are frequently not included as model components. We explore the relationship between gulf menhaden (Brevoortia...
Resource Type:: Article

Creator:: Ruzicka, James J., Steele, John H., Gaichas, Sarah K., Ballerini, Tosca, Gifford, Dian J., Brodeur, Richard D., and Hofmann, Eileen E.
Abstract:: End-to-end models were constructed to examine and compare the trophic structure and energy flow in coastal shelf ecosystems of four US Global Ocean Ecosystem Dynamics (GLOBEC) study regions: the Northern California Current, the Central Gulf of Alaska, Georges Bank, and the Southwestern Antarctic Peninsula. High-quality data collected on system components...
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Full Text:: Scientist, Graduate School of Oceanography, University of Rhode Island, Narragansett, RI, USA. Richard D

Creator:: Francis, Tessa B., Scheuerell, Mark D., Brodeur, Richard D., Levin, Phillip S., Ruzicka, James J., Tolimieri, Nick, and Peterson, William T.
Abstract:: Climatic effects in the ocean at the community level are poorly described, yet accurate predictions about ecosystem responses to changing environmental conditions rely on understanding biotic responses in a food-web context to support knowledge about direct biotic responses to the physical environment. Here we conduct time-series analyses with multivariate autoregressive...
Resource Type:: Article

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