A quantitative sedimentary model for the modern lacustrine beach bar (Qinghai Lake, Northwest China)
| Autor: | Min Wang, Mingfu Ma, Chenlin Hu, Yuanfu Zhang, Zaixing Jiang, Xingmou Wang |
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| Rok vydání: | 2016 |
| Předmět: |
010504 meteorology & atmospheric sciences
Breaking wave Aquatic Science Surf zone 010502 geochemistry & geophysics 01 natural sciences Petroleum reservoir Physics::Geophysics Sedimentary depositional environment Wave height Wind wave Sedimentary rock Sedimentology Geomorphology Physics::Atmospheric and Oceanic Physics Geology 0105 earth and related environmental sciences Earth-Surface Processes |
| Zdroj: | Journal of Paleolimnology. 59:279-296 |
| ISSN: | 1573-0417 0921-2728 |
| Popis: | Lake beach bar sandstone has been regarded as an important oil and gas reservoir in China. However, types and depositional mechanisms of the sandstone have not yet been fully studied. In this study, we analyzed modern beach bars in Qinghai Lake, the largest modern lake in China. The key factors controlling beach bar development in the lake were found to be wave length and height, lakeshore terrain, and material supply. Sedimentary models were established based on modern coastal dynamic theory. Beach bars were divided into breaking and surf bars. Breaking bars develop near the breaking zone where water depth is a function of wave height and length. Maximum breaking bar thickness is calculated from the difference between breaking point depth and breaking wave height. Surf bars develop in the surf zone where surf water depth equals breaking wave height. Maximum surf bar thickness is given by the breaking wave height. Wind waves play an important role in the location and construction of Qinghai Lake beach bars. |
| Databáze: | OpenAIRE |
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