Shoreline Variability of a Bay Beach: The Case of Apam Beach, Ghana

被引：6

作者：

Abdul-Kareem, Raheem ^{[1
,2
]}

Asare, Noble Kwame ^{[1
,2
]}

Angnuureng, Donatus Bapentire ^{[1
]}

Brempong, Emmanuel K. ^{[1
,2
]}

机构：

[1] Univ Cape Coast, Ctr Coastal Management, Africa Ctr Excellence Coastal Resilience ACECoR, Cape Coast, Ghana

[2] Univ Cape Coast, Sch Biol Sci, Dept Fisheries & Aquat Sci, Cape Coast, Ghana

来源：

ESTUARIES AND COASTS | 2022年 / 45卷 / 08期

关键词：

Bay beach; Shoreline; Spatio-temporal changes; DoD; Dynamic equilibrium; CoastSat; COASTAL EROSION; MANAGEMENT;

D O I：

10.1007/s12237-022-01110-9

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The Ghanaian coast is eroding at a significant rate. A comprehensive understanding of the dynamics of a beach is vital for its management. Two decades of shoreline and a short-term sediment volume change data on the Apam Beach were analysed from freely available satellite and drone images, respectively. After assessing its long-term shoreline changes, it was revealed that the beach is gradually accreting at a mean rate of + 0.60 m/year. This, coupled with a net sediment deposition of + 3725.22 m(3) within 5 months, could be attributed to fluvial discharges and the topography of the beach. The Parabolic Bay Shape Equation (PBSE) further characterised this beach as being in the dynamic equilibrium state. Thus, any disruption to the existing sediment transport mechanism will lead to a chronic erosion problem. To avert this, it is proposed that all future developments on this beach should be thoroughly planned.

引用

页码：2373 / 2386

页数：14

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