返回Google圖書搜尋

Sediment Transport Modeling and Implications for Benthic Primary Producers in Oak Creek, OR

出版	Oregon State University, 2016
URL	http://books.google.com.hk/books?id=gcRMAQAACAAJ&hl=&source=gbs_api

註釋The spatial and temporal variability of sediment transport processes in Oak Creek, OR was investigated and used to explore two study questions: 1) How do sediment transport processes influence benthic algal communities?, and 2) Can fluvial-hydraulic models make accurate predictions of bed load transport rates? Our study was conducted in a 96 m reach of Oak Creek, OR - a small gravel bed stream in the Oregon Coast range. The study site is located in the same reach that was used to collect the historic Oak Creek bed load dataset of Milhous [1973]. To answer study question 1 we characterized the variability in sediment transport for a series of eight high flow events ranging from 0.64-3.4 m3/s using modeled shear stress ([tau]) from a field calibrated, high resolution (0.1 m2) 2- dimensional hydrodynamic model (FaSTMECH) coupled with detailed measurements of the channel substrate. The stream bed was then categorized into regions of high and low disturbance based on potential mobility of the median grain size using a Shield's stress approach. High resolution (