Flows
Laboratory
Estuarine processes, hydrodynamics, remote sensing, tidal analysis
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David Jay

Professor

Background

Ph.D. in Physical Oceanography, University of Washington, 1987
M.S. in Marine Environmental Studies 1974, SUNY at Stony Brook, Stony Brook, New York
B.A. (cum laude) in Chemical Physics 1970, Pomona College, Claremont, California

 

One symptom of global climate change is an increase in the range of tides throughout most of the eastern Pacific. Sea levels are rising and storm waves are growing larger, resulting in potentially severe coastal erosion along Pacific shores—including near the mouth of the Columbia River.

David Jay is working to reinvent tidal analysis, a field of study that hasn’t been modernized since the 1920s. His research involves extracting more meaningful information from data points around the world to make better predictions about tide changes in the future. Results of the research will have wide-ranging uses for virtually anyone connected to the world’s oceans. That includes the U.S. Navy, which has approached Jay in an effort to know more about the tides in strategic locations around the world.

Closer to home, Jay is researching the effects man and nature have on salmon habitat in the Columbia River basin. As part of his interest in the Columbia, Jay and colleague Scott Wells are working to establish the Center for Columbia Basin Research at Portland State. It will be a multidisciplinary group that can advise the many state and federal agencies in Oregon and Washington on salmon and other river management issues.

Publications

86 entries « 9 of 9 »

Jay, D A; Smith, J D

Residual circulation in shallow estuaries: 2. Weakly stratified and partially mixed, narrow estuaries Journal Article

In: Journal of Geophysical Research, 95 (C1), pp. 733-748, 1990.

Links | BibTeX

Giese, B S; Jay, D A

Modelling tidal energetics of the Columbia River Estuary Journal Article

In: Estuarine, Coastal and Shelf Science, 29 (6), pp. 549-571, 1989.

Links | BibTeX

Jay, D A; Smith, J D

Residual circulation in and classification of shallow, stratified estuaries Incollection

In: Dronkers, J; van Leussen, W (Ed.): Physical Processes in Estuaries, pp. 21-41, Springer, Berlin Heidelberg, 1988.

Links | BibTeX

Simenstad, C A; Jay, D A; McIntyre, C D; Sherwood, C; Small, L

The dynamics of the Columbia River Estuary ecosystem Technical Report

CREST Astoria, OR, 1984.

BibTeX

Jay, D A

Ciculatory processes in the Columbia River Estuary Technical Report

CREST Astoria, OR, 1984.

BibTeX

Jay, D A

Review of "Tidal Hydrodynamics" Journal Article

In: EOS, Transactions, American Geophysical Union, 63 (3), pp. 334, 1982, (editor is B. Saltzman, published as Advances in Geophysics Vol 22, Academic Press, New York).

BibTeX

86 entries « 9 of 9 »

Courses

CE 481/581 – The Columbia River as a System

Credits: 2

Lecture: Explores the climate and hydrologic processes that shape the Columbia River basin ecosystem, and relates these processes to the basin’s management context. The geographic scope includes the watershed, the mainstem and its reservoirs, major tributaries, the tidal river below Bonneville Dam, the estuary, the Columbia plume, and coastal waters that interact with the plume.

Prerequisites: Junior standing
Recommended: CE 361 and CE 371

CE 482/582 – Introduction to Sediment Transport

Credits: 4

Lecture: Fundamentals of sediment transport in natural surface waters. Analysis of the governing equations of mass, momentum, and sediment conservation. Covers bedload and suspended material transport in riverine and estuarine waters, focusing on non-cohesive materials. Cohesive material transport will be briefly introduced. May be taken only once for credit.

Prerequisites: CE 361 and CE 362

CE 483/583 – Estuarine Circulation

Credits: 4

Lecture: Introduction to the physical processes that govern estuarine and buoyant plume circulation. These include tides, density‐driven circulation, internal tidal asymmetry and frontal propagation.

Prerequisites: CE 361 and CE 371
Recommended: CE 576

CE 489/589 – Introduction to Advanced Fluid Mechanics

Credits: 4

Lecture and Laboratory: Advanced introduction to the geophysical fluid flows, including properties of seawater; conservation of mass, energy and momentum; dimensional analysis; the Navier‐Stokes, Reynolds and turbulent kinetc energy equations; geostrophy and potential vorticity; long and short waves; and turbulence and boundary layers. May be taken only once for credit.

Prerequisites: EAS 215, Mth 256, CE 361, and CE 362