Rivers and Inlets DRI: Plume, Sediment and Bed Dynamics at the Columbia River Bar
نویسندگان
چکیده
منابع مشابه
Backwater and river plume controls on scour upstream of river mouths: Implications for fluvio-deltaic morphodynamics
[1] Sediment flux from rivers to oceans is the fundamental driver of fluvio-deltaic morphodynamics and continental margin sedimentation, yet sediment transport across the river-to-marine boundary is poorly understood. Coastal rivers typically are affected by backwater, a zone of spatially decelerating flow that is transitional between normal flow upstream and the offshore river plume. Flow dece...
متن کاملDynamics of Sandwaves under Combined Wave - Current Forcing and Mine Burial Processes, and Instrumentation for Measuring Nearshore Morphologic Change and Hydrodynamic Forcing
Our long terms goals are to understand sediment transport processes, the relevant physical forcing processes and the resulting morphologic evolution of river mouths and tidal inlets and shoals. Specific goals include understanding bedform characteristics (ripple to sandwave and sandbar scale) in relation to wave-and current-forced mean and turbulent flow. OBJECTIVES 1. Measure the currents, hyd...
متن کاملUncertainties in Evaluation of the Sediment Transport Rates in Typical Coarse-Bed Rivers in Iran
Flow and sediment transport processes are different and more complex in coarse-bed rivers than in sand-bed rivers. The main goal of the present study is to evaluate different modes of sediment transport using different hydrometric and hydraulic methods, and to address the major uncertainties. Four river reaches were selected as representatives of coarse-bed rivers in the Northwest of Iran. A se...
متن کاملObservations at the tidal plume front of a high-volume river outflow
[1] We present shipboard observations of very strong convergence, vertical velocities and mixing, and nearbed impacts associated with the leading-edge front of the tidally-pulsed Columbia River plume. With upwellingfavorable winds and riverflow of 4900 ms , the plume propagates as a buoyant gravity current with a rotary, borelike vertical frontal circulation and downwelling as strong as 0.35 m ...
متن کاملMorphological, Sedimentary and Hydrodynamic Study in Intersection of the Arvand River and the Karun River by Using Field Data and Numerical Modeling
Providing faultless proceeding of the engineer in order to protect the rivers, requires understanding the morphological behavior of the river and studying the hydrodynamic phenomena of the area. The intersection of the Karun rivers as the largest and longest river in Iran with the Arvand border river is of considerable importance due to its strategic location. In this paper, using field measure...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2014