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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...
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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,...
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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...
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Full Text:: RESEARCH LETTERS, VOL. 30, NO. 15, 8024, doi:10.1029/2003GL017511, 2003 Copyright 2003 by the American

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:: GEOPHYSICAL RESEARCH LETTERS, VOL. 25, NO.15, PAGES 2761-2764, AUGUST 1, 1998 , Secondary circulation

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...
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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...
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Full Text:: smaller research vessel, which can experience quicker accelerations than the R/V We- coma (a 56-m ship

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...
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Full Text:: bottom topography. Such a system is the subject of on- going research. For a layer model of coastal

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...
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Full Text:: ., the wind stress curl), on the separation of a coastal jet is a subject for future research

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:: . 2003). Beginning in 2006, the NH line has been occupied nearly continuously by Teledyne Webb Research

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