کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5784381 | 1639062 | 2017 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Exploratory morphodynamic modeling of the evolution of the Jiangsu coast, China, since 1855: Contributions of old Yellow River-derived sediment
ترجمه فارسی عنوان
مدل سازی مورفودینامیکی اکتشافی از تکامل سواحل جیانگ سو، چین، از سال 1855: مشارکت رسوب از رودخانه زرد قدیمی
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
رها دلتای رودخانه زرد، شعاع شن و ماسه رد می شود، مدلسازی مورفودینامیکی، منبع رسوب، اثر موج، رسوبات کم عمق،
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
ژئوشیمی و پترولوژی
چکیده انگلیسی
In this study, we aim to investigate the overall morphological evolution of the Jiangsu coast after 1855, when the Yellow River shifted northward. We focus on fine sediment transport between two large-scale geomorphological units, i.e., the Abandoned Yellow River Delta (AYD) and the Radial Sand Ridges (RSRs). An existing morphodynamic model, which was established for reproducing the development of the AYD before 1855, is modified and extended. In addition to the tidal forcing, waves and human interventions (i.e., revetments) are considered in the model. The model results are compared with the existing data. Both the evolution trend of the Jiangsu coast and the spatial distribution of the offshore shoals show good agreement. The simulated fine sediment depositions in different periods are consistent with the geological measurements. The results reveal that the old Yellow River-derived sediment not only contributes to the sedimentation in the RSRs but can also be transported to the adjacent zones, especially farther south/southeast. Moreover, the spatial distribution of fine sediment deposits varies in the RSRs. The different sedimentary environments in the Dongsha and Tiaozini ridges result in significant grain size differences in these two neighboring ridges. A sensitivity analysis indicates that tides play a key role in dominating the long-term morphological evolution of the Jiangsu coast and the total erosion from the AYD. On smaller scales, the effect of revetments (built since the 1930s) on the evolution of the nearshore zone and the effect of wind waves on the erosion of offshore shoals are relatively important. The effect of a gradual coarsening process of bottom sediment along the Jiangsu coast, which may be due to continuous fine sediment removal, is identified. Fine sediment depositions in the Tiaozini ridge and in the northern offshore zone of the RSRs are relatively more sensitive to the coarsening trend of bottom sediment than other areas.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Marine Geology - Volume 390, 1 August 2017, Pages 306-320
Journal: Marine Geology - Volume 390, 1 August 2017, Pages 306-320
نویسندگان
Min Su, Peng Yao, Zheng Bing Wang, Chang Kuan Zhang, Marcel J.F. Stive,