High-Resolution Non-Hydrostatic Modeling of Frontal Features in the Mouth of the Columbia River
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- 作者：Fengyan Shi ; C. Chris Chickadel ; Tian-Jian Hsu ; James T. Kirby…
- 关键词：Mouth of Columbia River ; Thermal fingers ; Internal hydraulic jump ; Non ; hydrostatic modeling
- 刊名：Estuaries and Coasts
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：40
- 期：1
- 页码：296-309
- 全文大小：
- 刊物类别：Earth and Environmental Science
- 刊物主题：Environment, general; Ecology; Freshwater & Marine Ecology; Environmental Management; Coastal Sciences; Water and Health;
- 出版者：Springer US
- ISSN：1559-2731
- 卷排序：40
文摘
Airborne data measured during the recent RIVET II field experiment has revealed that horizontally distributed thermal fingers regularly occur at the Mouth of Columbia River (MCR) during strong ebb tidal flows. The high-resolution, non-hydrostatic coastal model, NHWAVE, predicts salinity anomalies on the water surface which are believed to be associated with the thermal fingers. Model results indicate that large amplitude recirculation are generated in the water column between an oblique internal hydraulic jump and the North Jetty. Simulation results indicate that the billows of higher density fluid have sufficiently large amplitudes to interrupt the water surface, causing the prominent features of stripes on the surface. The current field is modulated by the frontal structures, as indicated by the vorticity field calculated from both the numerical model and data measured by an interferometric synthetic aperture radar.