Scott A. Jenkins
University of California, San Diego
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Featured researches published by Scott A. Jenkins.
The Journal of Geology | 1999
Douglas L. Inman; Scott A. Jenkins
We studied the streamflow and sediment flux characteristics of the 20 largest streams entering the Pacific Ocean along the central and southern California coast, extending for 750 km from Monterey Bay to just south of the U.S./Mexico border. Drainage basins ranged in area from 120 to 10,800 km2, with headwater elevations ranging from 460 to 3770 m. Annual streamflow ranged from 0 to a maximum of \documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \usepackage[OT2,OT1]{fontenc} \newcommand\cyr{ \renewcommand\rmdefault{wncyr} \renewcommand\sfdefault{wncyss} \renewcommand\encodingdefault{OT2} \normalfont \selectfont} \DeclareTextFontCommand{\textcyr}{\cyr} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} \landscape
Journal of Geophysical Research | 1993
Douglas L. Inman; M. Hany S. Elwany; Scott A. Jenkins
IEEE Journal of Oceanic Engineering | 2007
Scott A. Jenkins; Douglas L. Inman; Michael D. Richardson; Thomas F. Wever; Joseph Wasyl
1\times 10^{9}
Journal of Aircraft | 1990
Scott A. Jenkins; Joseph Wasyl
Journal of the Acoustical Society of America | 2005
Gerald L. D’Spain; Scott A. Jenkins; Richard Zimmerman; James C. Luby; Aaron Thode
\end{document} m3/yr for the Santa Clara River in 1969, with an associated suspended sediment flux of \documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \usepackage[OT2,OT1]{fontenc} \newcommand\cyr{ \renewcommand\rmdefault{wncyr} \renewcommand\sfdefault{wncyss} \renewcommand\encodingdefault{OT2} \normalfont \selectfont} \DeclareTextFontCommand{\textcyr}{\cyr} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} \landscape
oceans conference | 2003
Scott A. Jenkins; Douglas L. Inman
Journal of the Acoustical Society of America | 2007
Gerald L. D’Spain; Richard Zimmerman; Scott A. Jenkins; James C. Luby; Peter Brodsky
46\times 10^{6}
Journal of Fluid Mechanics | 1985
Scott A. Jenkins; Douglas L. Inman
California and the World Ocean 2002 | 2005
Douglas L. Inman; Patricia M. Masters; Scott A. Jenkins
\end{document} ton. Trend analyses confirm that El Niño/Southern Oscillation–induced climate changes recur on a multidecadal time scale in general agreement with the Pacific/North American climate pattern: a dry climate extending from 1944 to about 1968 and a wet climate extending from about 1969 to the present. The dry period is characterized by consistently low annual river sediment flux. The wet period has a mean annual suspended sediment flux about five times greater, caused by strong El Niño events that produce floods with an average recurrence of ca. 5 yr. The sediment flux of the rivers during the three major flood years averages 27 times greater than the annual flux during the previous dry climate. The effects of climate change are superimposed on erodibility associated with basin geology. The sediment yield of the faulted, overturned Cenozoic sediments of the Transverse Ranges is many times greater than that of the Coast Ranges and Peninsular Ranges. Thus, the abrupt transition from dry climate to wet climate in 1969 brought a suspended sediment flux of 100 million tons to the ocean edge of the Santa Barbara Channel from the rivers of the Transverse Range, an amount greater than their total flux during the preceding 25‐yr dry period. These alternating dry to wet decadal scale changes in climate are natural cycles that have profound effects on fluvial morphology, engineering structures, and the supply of sediment and associated agricultural chemicals to the ocean.
oceans conference | 2003
Douglas L. Inman; Scott A. Jenkins; Patricia M. Masters
A beach equilibrium model is developed that treats the outer (shorerise) portion of the profile independently from that of the inner (bar-berm) portion. The two portions are matched at the breakpoint-bar. The partitioning of the profile in this way is consistent with the different forcing modes on either side of the breakpoint. This formulation utilizes beach profile data not previously available. It is shown that both portions of the profile are well fitted by curves of the form h = Axm, where h is positive downward and x is the positive offshore coordinate. Surprisingly, the value of m ≈ 0.4 is nearly the same for shorerise and bar-berm and does not change significantly with seasonal beach changes (summer/winter). The principal difference between seasonal profiles is that in winter (higher waves) the breakpoint-bar is deeper and farther offshore while the berm crest is displaced landward. Thus the changes in seasonal equilibria are manifested by simple, self-similar displacements of the bar-berm and shorerise curves as a consequence of changes in surf zone width and O(1) variations in the factor A.