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Creator:: Ryan, J. P., Yoder, J. A., Barth, John A., and Cornillon, P. C.
Abstract:: Meanders of the shelf break front in the Mid-Atlantic Bight (MAB) during April and May of 1997 were associated with chlorophyll enhancement along a hydrographic and a topographic feature. The hydrographic feature was the surface outcrop of the front, which ranged from ~10 to >100 km seaward of the shelf...
Resource Type:: Article
Full Text:: the shelf break front in the Mid‐Atlantic Bight JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 104, NO

Creator:: Ullman, David S., Dale, Andrew C., Hebert, Dave, and Barth, John A.
Abstract:: Hydrographic observations made with an undulating vehicle carrying a CTD and concurrent shipboard ADCP velocity observations over a 12‐day period are combined to investigate vertical mixing and cross‐frontal fluxes on the Northern Flank of Georges Bank. The CTD density time series is analyzed to detect the presence of vertical overturns,...
Resource Type:: Article
Full Text:: RESEARCH, VOL. 108, NO. C11, 8010, doi:10.1029/2002JC001328, 2003 1Graduate School of Oceanography

Creator:: Barth, John A.
Abstract:: Equatorward velocities in the upwelling jet of the northern California Current were 0.05–0.06 m s¯¹ faster in spring and summer 2002 than on average over 1998–2002. This result is based on a five-year data set of surface drifters released across the continental margin off central Oregon (44.65°N) during April and...
Resource Type:: Article
Full Text:: Northern California Current: Evidence from Lagrangian Surface Drifters John A. Barth College of Oceanic

Creator:: Barth, John A., Bogucki, Darek, Pierce, Stephen D., and Kosro, P. Michael, 1951-
Abstract:: Evidence for secondary circulation associated with a shelfbreak front is obtained from a high‐resolution, cross‐shelf section of hydrographic, optical and velocity fields. Convergence in the bottom boundary layer on the inshore side of the front and subsequent upwelling into the interior is evident by a mid‐water region of suspended bottom...
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Full Text:: College of Oceanic •; Atmospheric Sciences, Oregon State University, Corvallis, Oregon Abstract

Creator:: Lester, Sarah E., Costello, Christopher, Halpern, Benjamin S., Gaines, Steven D., White, Crow, and Barth, John A.
Abstract:: A central challenge for natural resource management is developing rigorous yet practical approaches for balancing the costs and benefits of diverse human uses of ecosystems. Economic theory has a long history of evaluating tradeoffs in returns from different assets to identify optimal investment strategies. There has been recent progress applying...
Resource Type:: Article
Full Text:: . Gaines d , Crow White e , 3 John A. Barth f 4 5 a Marine Science Institute and Bren School of

Creator:: Pierce, Stephen D., Barth, John A., and Smith, Robert L.
Abstract:: Accurate ship velocity is important for determining absolute currents from acoustic Doppler current profiler (ADCP) measurements. In this paper, the authors describe the application of two methods to improve the quality of ship velocity estimates. The first uses wide-area differential global positioning system (WADGPS) navigation to improve ship positioning. During...
Resource Type:: Article
Full Text:: Adaptive Smoothing of Ship Velocity STEPHEN D. PIERCE, JOHN A. BARTH, AND ROBERT L. SMITH College of

Creator:: Dale, Andrew C. and Barth, John A.
Abstract:: Upwelling jets flow alongshore in approximate geostrophic balance with the onshore pressure gradient induced by coastal upwelling. Observations of such jets have shown that they often move offshore downstream of capes, leaving a pool of upwelled water inshore. Comparisons are made between this behavior and the hydraulic transition of a...
Resource Type:: Article
Full Text:: Upwelling Jet Flowing around a Cape ANDREW C. DALE AND JOHN A. BARTH College of Oceanic and Atmospheric

Creator:: Castelao, Renato M. and Barth, John A.
Abstract:: A high-resolution numerical model with idealized topography is used to investigate the degree to which a coastal upwelling jet separates from the shelf as it flows around a submarine bank depending on the wind strength and the horizontal scale of the bank. Experiments were run using several wind forcing magnitudes...
Resource Type:: Article
Full Text:: College of Oceanic and Atmospheric Sciences, Oregon State University, Corvallis, Oregon (Manuscript

Creator:: Aguirre, Catalina, Pizarro, Oscar, Strub, Paul T., Garreaud, Rene, and Barth, John A.
Abstract:: The seasonal cycle of the near-surface circulation off central Chile was analyzed using satellite altimetry and an oceanic model. To evaluate the role of the wind stress curl on the circulation we performed two identical simulations except for the wind-forcing: the "control run" used long-term monthly mean wind stress and...
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Full Text:: -0227/12/2011JC007379 JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 117, C01006, doi:10.1029/2011JC007379, 2012

Creator:: Pierce, Stephen D., Barth, John A., Shearman, R. Kipp, and Erofeev, Anatoli Y.
Abstract:: Climate models predict a decrease in oceanic dissolved oxygen and a thickening of the oxygen minimum zone, associated with global warming. Comprehensive observational analyses of oxygen decline are challenging, given generally sparse historical data. The Newport hydrographic (NH) line off central Oregon is one of the few locations in the...
Resource Type:: Article
Full Text:: * STEPHEN D. PIERCE, JOHN A. BARTH, R. KIPP SHEARMAN, AND ANATOLI Y. EROFEEV College of Oceanic and

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