气候变化领域集成服务门户(CCPortal): Stationary and vessel mounted ADCP profiles from flow and suspended sediment concentration fields over tidal bedforms in the Knudedyb tidal inlet in the Danish Wadden Sea

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.842199
	Stationary and vessel mounted ADCP profiles from flow and suspended sediment concentration fields over tidal bedforms in the Knudedyb tidal inlet in the Danish Wadden Sea
	Kwoll; Eva; Becker; Marius; Winter; Christian
发布日期	2014-02-05
数据集类型	dataset
英文简介	This study examines tide-dependent variations in the formation and dynamics of suspended sediment patterns coupled to mean flow and turbulence above asymmetric bed forms. In the Danish Knudedyb inlet, very large primary bed forms remain ebb-oriented during a tidal cycle while smaller superimposed bed forms reverse direction with each tidal phase. Hydroacoustic in situ observations reveal pronounced differences in suspended sediment transport patterns between tidal phases caused by the relative orientation of primary bed forms and the mean tidal flow and flow unsteadiness during a single tidal phase. When flow and primary bed form orientation are aligned, water-depth-scale macroturbulence develops in the bed form lee-sides in the presence of flow separation. Macroturbulent flow structures occur at high flow stages and are coupled to increased amounts of sediment in suspension. When flow and bed form orientation are opposed no evidence of flow separation associated with primary bed forms is found. Sediment-laden macroturbulence at high flow velocities is of a smaller scale and attributed to the superimposed secondary bed forms. The flow structures are advected along the primary bed form stoss-side (temporary hydraulic lee-side). The steep primary bed form lee-side (temporary hydraulic stoss-side) however, limits transport capabilities beyond the scale of primary bed forms.
空间范围	Median Latitude: 55.314060 * Median Longitude: 8.505223 * South-bound Latitude: 55.313273 * West-bound Longitude: 8.500641 * North-bound Latitude: 55.314923 * East-bound Longitude: 8.510577
时间范围	2008-11-11T13:05:05 - 2008-12-11T19:47:30
语种	英语
国家	国际
学科大类	气候变化
学科子类	气候变化
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/215473
推荐引用方式 GB/T 7714	Kwoll,Eva,Becker,et al. Stationary and vessel mounted ADCP profiles from flow and suspended sediment concentration fields over tidal bedforms in the Knudedyb tidal inlet in the Danish Wadden Sea.2014-02-05.https://doi.org/10.1594/PANGAEA.842199.