SA@OSU Home
→
College of Earth, Ocean, and Atmospheric Sciences
→
Faculty Research Publications (College of Earth, Ocean, and Atmospheric Sciences)
→
Browsing Faculty Research Publications (College of Earth, Ocean, and Atmospheric Sciences) by Author

Browsing Faculty Research Publications (College of Earth, Ocean, and Atmospheric Sciences) by Author "Allen, John S."

Now showing items 1-20 of 24

Analysis and comparison of three ecosystem models

Newberger, Priscilla A.; Allen, John S.; Spitz, Yvette (American Geophysical Union, 2003-03-06)

Three-component (NPZ), four-component (NPZD), and five-component (NNPZD) nitrogen-based ecosystem models are compared. The fixed points of the zerodimensional systems, with no spatial variation except light attenuation b ...
Assimilation of moored velocity data in a model of coastal wind-driven circulation off Oregon: Multivariate capabilities

Kurapov, Alexander; Allen, John S.; Egbert, Gary D.; Miller, Robert N.; Kosro, P. Michael; Levine, Murray D.; Barth, John A. (American Geophysical Union, 2005-09-29)

Horizontal current measurements from an array of moored acoustic Doppler profilers are assimilated sequentially into a model of coastal wind-driven circulation off Oregon during the upwelling season of May–August 2001. M ...
Assimilation of surface velocity data into a primitive equation coastal ocean model

Oke, Peter R.; Allen, John S.; Miller, Robert N.; Egbert, Gary D.; Kosro, P. Michael, 1951- (American Geophysical Union, 2002-09-10)

A data assimilation system (DAS) of the wind-driven, mesoscale shelf circulation off the Oregon coast is developed. The DAS assimilates low-pass filtered surface velocity measurements, obtained from land-based high-fre ...
Comments on "The non-wavelike response of a continental shelf to wind" by G. T. Csanady

Brink, K. H.; Allen, John S. (Journal of Marine Research, 1998)

Csanady (1998) presents solutions for time-dependent wind-driven flow in a barotropic coastal ocean. We disagree with two of his three boundary condition options and wish to clarify the origin of the non-wavelike aspec ...
Distant effect of assimilation of moored currents into a model of coastal wind-driven circulation off Oregon

Kurapov, Alexander; Allen, John S.; Egbert, Gary D.; Miller, Robert N.; Kosro, P. Michael; Levine, Murray D.; Boyd, T. (American Geophysical Union, 2005-02-22)

An optimal interpolation (OI) sequential algorithm is implemented for a three-dimensional primitive equation model to assimilate current measurements from acoustic Doppler profilers moored on the Oregon shelf as a part o ...
Dynamics of the Coastal Transition Zone Jet 1. Linear stability analysis

Pierce, Stephen D.; Allen, John S.; Walstad, Leonard J. (American Geophysical Union, 1991)

The linear stability of a coastal transition zone (CTZ) jet is analyzed using a six-layer quasi-geostrophic model with observed basic state velocity profiles. The velocity profiles are obtained from objectively analyzed ...
Dynamics of the Coastal Transition Zone Jet 2. Nonlinear finite amplitude behavior

Allen, John S.; Walstad, Leonard J.; Newberger, P. A. (American Geophysical Union, 1991-08-15)

The finite amplitude nonlinear behavior of the coastal transition zone (CTZ) jet, assumed to be governed by quasi-geostrophic dynamics, is studied utilizing numerical experiments in an idealized geometry. Finite differen ...
Ecosystem response to upwelling off the Oregon coast: Behavior of three nitrogen-based models

Spitz, Yvette; Newberger, Priscilla A.; Allen, John S. (American Geophysical Union, 2003-03-06)

The behavior of three ecosystem models is analyzed for upwelling off the Oregon coast as a function of the number of model components. The first ecosystem model includes dissolved inorganic nitrogen-phytoplankton-zooplan ...
Forcing a three-dimensional, hydrostatic, primitive-equation model for application in the surf zone : 1. formulation

Newberger, P. A.; Allen, John S. (American Geophysical Union, 2007-08-31)

An Eulerian analysis for wave forcing of three-dimensional (3D) wave-averaged mean circulation in the surf zone is presented. The objective is to develop a dynamically consistent formulation for applications in a 3D pr ...
Forcing a three-dimensional, hydrostatic, primitive-equation model for application in the surf zone : 2. application to DUCK94

Newberger, P. A.; Allen, John S. (American Geophysical Union, 2007-08-31)

A three-dimensional primitive-equation model for application to the nearshore surf zone has been developed. This model, an extension of the Princeton Ocean Model (POM), predicts the wave-averaged circulation forced by ...
Lagrangian characteristics of continental shelf flows forced by periodic wind stress

Kuebel Cervantes, Brandy T.; Allen, John S.; Samelson, Roger M. (European Geosciences Union, 2004-02-25)

The coastal ocean may experience periods of fluctuating along-shelf wind direction, causing shifts between upwelling and downwelling conditions with responses that are not symmetric. We seek to understand these asymme ...
The large-scale coastal wind field along the west coast of North America, 1981-1982

Halliwell, George R.; Allen, John S. (American Geophysical Union, 1987-02-15)

We study the statistical properties of the coastal wind field along the west coast of North America for two summers. 1981 and 1982 Coastal Ocean Dynamics Experiments 1 and 2, respectively), and the Intervening winter u ...
Large-scale response to atmospheric forcing of shelf currents and coastal sea level off the west coast of North America : May-July 1981 and 1982

Denbo, D. W.; Allen, John S. (American Geophysical Union, 1987-02-15)

The response of alongshore currents V over the continental shelf and of coastal sea level ζ along the Pacific coast of North America to atmospheric forcing on large alongshore scales (100-2000 km) during May-July 1981 ...
Large-scale structure of the spring transition in the coastal ocean off western North America

Strub, P. Ted; Allen, John S.; Huyer, Adriana, 1945 -; Smith, Robert L. (Robert Lloyd), 1935- (American Geophysical Union, 1987-02-15)

Past measurements off the coast of central Oregon and Washington have shown that the rapid change from northward monthly mean winter winds to southward summer winds forces a "spring transition" of the coastal ocean: se ...
Modeling of ecosystem processes on the Oregon shelf during the 2001 summer upwelling

Spitz, Yvette; Allen, John S.; Gan, J. (American Geophysical Union, 2005-10-22)

Three-dimensional ecosystem response to wind forcing on the continental shelf off Oregon is studied using a five-component nitrogen-based ecosystem model coupled to a high-resolution circulation model. We investigate, in ...
Modeling studies of the coastal circulation off northern California : statistics and patterns of wintertime flow

Pullen, Julie; Allen, John S. (American Geophysical Union, 2001-11-15)

We conduct modeling studies of the coastal circulation off northern California in the vicinity of the Eel River (40.6 degreesN, the site of the 1995-2000 Strata Formation on Margins (STRATAFORM) marine geology observatio ...
A modeling study of shelf circulation off northern California in the region of the Coastal Ocean Dynamics Experiment 2. Simulations and comparisons with observations

Gan, Jianping; Allen, John S. (American Geophysical Union, 2002)

This is the second part of a modeling study of wind-forced flow on the continental shelf off northern California in the region (37°-40°N) of the Coastal Ocean Dynamics Experiment (CODE). Gan and Allen [2002] analyzed the ...
A modeling study of shelf circulation off northern California in the region of the Coastal Ocean Dynamics Experiment : response to relaxation of upwelling winds

Gan, Jianping; Allen, John S. (American Geophysical Union, 2002-09-17)

A two-part modeling study of the wind-forced flow on the continental shelf off northern California in the region (37°–40°N) of the Coastal Ocean Dynamics Experiment (CODE) is pursued. This paper involves a process-orie ...
Modeling study of turbulent mixing over the continential shelf : comparison of turbulent closure schemes

Wijesekera, H. W.; Allen, John S.; Newberger, P. A. (American Geophysical Union, 2003)

The sensitivity of model-produced time-dependent wind-driven circulation on the continental shelf to the turbulent closure scheme employed is studied with a twodimensional approximation (variations across-shelf and in ...
Modeling upwelling circulation off the Oregon coast

Gan, Jianping; Allen, John S. (American Geophysical Union, 2005-10-20)

Time-dependent, three-dimensional, upwelling circulation on the continental shelf off the Oregon coast is studied using a primitive equation numerical model. A limited area domain with a high-resolution curvilinear gri ...