登州浅滩近期演变及沉积物输运趋势

详细信息

收稿日期: 2013-04-25

RECENT EVOLUTION AND SEDIMENT TRANSPORTING PATTERNS OF THE DENGZHOU SHOAL

Received Date: 25 April 2013

摘要: 利用登州浅滩区域2004、2010年2期水深地形资料以及86个表层沉积物样品,对登州浅滩近期(2004—2010年)规模、形态、冲淤演变及表层沉积物输运趋势进行了研究,结果表明,在挖沙活动及泥沙供应量降低等因素综合作用下,2004—2010年登州浅滩由1991—2003年间的缓慢恢复转而大面积蚀退,-10 m等深线围成的面积减少5.9 km2;受浅滩大面积蚀退的响应,登州浅滩成为表层沉积物汇聚中心,使周边区域表层沉积物净输运方向均指向浅滩。
- 登州浅滩 /
- 冲淤演变 /
- 沉积物 /
- 输运趋势
Abstract: Based on water depth data for two periods and 86 surficial sediment samples, the surficial sediment transporting patterns and the recent evolution of the Dengzhou Shoal were studied in this paper with special attention to the scale, morphology and scouring and silting systems. Our results show that the Dengzhou shoal has suffered from slowly recovery during 1990—2003 to retrogradation during 2004—2010 and the area bounded by 10m isobath has decreased by 5.9km2 as the result of marine sand mining and insufficient sediment supply. And in response, the surficial sediment transport is directly towards the Dengzhou shoal as it appears to be the sediment sink.
- Dengzhou shoal /
- evolution of scouring and silting /
- surficial sediment /
- transport patterns