An improved method of sediment grain size trend analysis in the Xiaoqinghe Estuary, southwestern Laizhou Bay, China

The impact of coastal sediment transport in the nearshore region is significant and the need for improved sediment quantification techniques appears to be universally accepted. The coastal sediment transport models presently in use were derived empirically from very sparse measurements of waves and currents and from laboratory experiments. The shoreline of Kadalur fishing villages near Kalpakkam has been experiencing erosion due to occurrence of cyclones every monsoon. Palar River with its confluence in the Bay of Bengal at the northern tip of the Kadalur villages has its mouth closed due to negligible river flow. The purpose of this study is to assess sediment dynamics in the Kalpakkam coast using two independent approaches; namely Sediment Trend Analysis (STA) and two dimensional numerical modelling. The latter can track the movement of individual particles. Numerical modelling approach is based on Delft3D model which allows the coupling of flow and wave modules. STA and numerical modelling results can provide sediment transport direction. The combination of both approaches provides a means of verification of sedimentation processes. The basic assumption in STA is that sediment transport can be responsible for the differences in sediment grain size distributions. For Grain Size Trend Analysis, grab samples were collected throughout the nearshore area. Grain Size Trend Analysis was then carried out and subsequent results were plotted to obtain the sediment transport pattern for the region. The results obtained are compared with the numerical model results and also used for validation of sediment transport evaluated using the numerical model.

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Sediment transport patterns on the Estremadura Spur continental shelf: Insights from grain-size trend analysis

Journal of Sea Research ◽

10.1016/j.seares.2014.04.001 ◽

2014 ◽

Vol 93 ◽

pp. 28-32 ◽

Cited By ~ 5

Author(s):

Maria Balsinha ◽

Carlos Fernandes ◽

Anabela Oliveira ◽

Aurora Rodrigues ◽

Rui Taborda

Keyword(s):

Grain Size ◽

Sediment Transport ◽

Continental Shelf ◽

Trend Analysis ◽

Transport Patterns ◽

Grain Size Trend Analysis

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Análise morfotextural e aplicação de modelos de transporte de sedimentos na zona submersa adjacente a uma praia artificial em processo erosivo.

Quaternary and Environmental Geosciences ◽

10.5380/abequa.v1i1.14189 ◽

2009 ◽

Vol 1 (1) ◽

Cited By ~ 1

Author(s):

Tatiana Pinheiro Dadalto ◽

Jacqueline Albino

Keyword(s):

Grain Size ◽

Trend Analysis ◽

Grain Size Trend Analysis

Este trabalho consistiu na aplicação de modelos de tendência granulométrica e de caracterização morfotextural da porção submersa adjacente à Praia da Curva da Jurema, Vitória, ES. Foram levantados dados batimétricos e granulométricos e aplicados os modelos GSTA (Grain-Size Trend Analysis) de Gao (1996) e GSTAST (Grain-Size Trend Analysis with Significant Test) de Chang et al. (2001), que vetorizam o transporte de sedimentos. Os modelos foram considerados válidos para esta área de estudo, uma vez que os vetores resultantes estão de acordo com o padrão de transporte mostrado pela caracterização morfotextural, que indica o transporte de sedimentos da praia rumo à área de maiores profundidades. A aplicação do GSTA mostrou-se mais satisfatória, uma vez que há a representação vetorial de todas as estações amostrais sem se distanciar do padrão morfotextural encontrado. Este trabalho representa uma grande contribuição ao estudo da análise de tendências granulométricas, pois mostra que a aplicação de modelos pode ser satisfatória em ambientes de grande dinamismo e em costas artificiais.

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Trend analysis of sediment grain size and sedimentary pro- cess in the central South Yellow Sea

Chinese Science Bulletin ◽

10.1360/02tb9269 ◽

2002 ◽

Vol 47 (14) ◽

pp. 1202 ◽

Cited By ~ 1

Author(s):

Xuefa SHI

Keyword(s):

Grain Size ◽

Trend Analysis ◽

Yellow Sea ◽

South Yellow Sea ◽

Sediment Grain Size ◽

Central South Yellow Sea ◽

Central South

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Application of grain size trend analysis for the determination of sediment transport pathways in intertidal areas

Marine Geology ◽

10.1016/s0025-3227(96)00042-4 ◽

1996 ◽

Vol 135 (1-4) ◽

pp. 35-49 ◽

Cited By ~ 87

Author(s):

R. Pedreros ◽

H.L. Howa ◽

D. Michel

Keyword(s):

Grain Size ◽

Sediment Transport ◽

Trend Analysis ◽

Transport Pathways ◽

Grain Size Trend Analysis

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Characteristics of Grain Size Distribution on Beaches Sediment of Sumba Island, Nusa Tenggara Timur Based on Grainsize and Geochemical Data

Jurnal Geologi dan Sumberdaya Mineral ◽

10.33332/jgsm.geologi.20.3.153-164 ◽

2019 ◽

Vol 20 (3) ◽

pp. 153

Author(s):

Septriono Hari Nugroho ◽

Purna Sulastya Putra

Keyword(s):

Grain Size ◽

Trend Analysis ◽

High Tide ◽

Grain Size Analysis ◽

Geochemical Data ◽

Geochemical Analysis ◽

Beach Sediment ◽

Geochemical Elements ◽

Coastal Deposits ◽

Grain Size Trend Analysis

Study of beaches sediment characteristics were conducted on three beaches on Sumba Island, East Nusa Tenggara.The research is a part of Widya Nusantara Expedition which conducted by using Research Vessel of Baruna Jaya VIII. The aim of this study is to determine the characteristics of coastal deposits through the observation of grain size by using the grain size trend analysis approach (Grain Size Trend Analysis, commonly abbreviated as GSTA) and geochemical analysis. A total of 36 samples were taken on each coast representing high tide, transition and low tide along the coast. A grain size analysis was performed using a Malvern Mastersizer 2000 that was processed with Gradistat 4.0 software. Geochemical analysis was carried out using X-ray fluorescence spectrometry (XRF). The distribution of beach sediments is dominated by moderate sand - coarse sand and differences on content of geochemical elements (Ca, Sr, Fe, K, and Ti). The coastal conditions that are connected to the Indian Ocean (B1) have different characteristics from the beach that connected to the Sumba strait (B5 and B7). GSTA analysis showed sediment of Laboya Beach finer than sediment on Waikelo and Melolo Beach. Geochemical elements on Laboya Beach indicates different values than others. It indicates there are differences in the provenance and composition of sediment on the all three beaches. The supply of coastal deposits on these three beaches is influenced by the mechanism of precipitation of the walls and the processes of waves and rivers.Keywords: distribution, sediment, grainsize, geochemical, XRF, beach sediment.

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