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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Sediment management and morphodynamics : Analysis of embayed beach planform stability in danang, vietnam
Analysis of embayed beach planform stability in danang, vietnam
Author : ANH, DO T.K 1,2, MARCEL J.F. STIVE 1, RONALD L. BROUWER3 AND SIERD DE VRIES 1
nts an analysis of the planform stability of the complex embayed beach system of Da Nang Bay, central
Vietnam. As a result of the intensification of extreme weather conditions and human activities in this area (e.g. land
reclamation, river damming, and coastal structures), coastal safety as well as economic and ecological values are under
pressure. In order to anticipate future changes in the system, it is important to understand the morphological stability of
the beaches in Da Nang Bay.
To obtain more insight into the hydrodynamics and morphodynamics of embayed beaches, we first employed the simple
parabolic bay shape equation (PBSE) to determine the empirical morphological stability of the beaches: stable, dynamic
equilibrium, natural reshaping or unstable. It was found that the predicted planform stability of the beaches in Da Nang
Bay does not correspond to the observed behavior.
It is hypothesized that the discrepancies between predicted and observed behavior of the embayed beaches in Da Nang
Bay could possibly be attributed to a) the seasonal availability of sediment from the two rivers discharging in Da Nang
Bay and b) the seasonality of the dominant wave direction that mainly determines the planform stability resulting from
the PBSE. The aim of this study focuses on point b) and is twofold: 1) to obtain more insight into the planform stability of
the beaches in Da Nang Bay by applying a more advanced model to predict, the wave climate and 2) to investigate
seasonal variations in dominant wave direction affect the planform stability.Form Required :
File Size : 711,239 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Sediment management and morphodynamics
Date Published : 19/08/2015
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