نتایج جستجو برای: tidal flat

تعداد نتایج: 81182  

2016
Ying Chen Jinwei Dong Xiangming Xiao Min Zhang Bo Tian Yunxuan Zhou Bo Li Zhijun Ma

Tidal flats play a critical role in supporting biodiversity and in providing ecosystem services but are rapidly disappearing because of human activities. The Yangtze Estuary is one of the world's largest alluvial estuaries and is adjacent to the most developed economic zone in China. Using the Yangtze Estuary as a study region, we developed an automatic algorithm to estimate tidal flat areas ba...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اصفهان - دانشکده علوم 1389

this research concentrates on the lithostratigraphy, biostratigraphy, microfacies and sedimentary environment of the asmari and gachsaran formations at southwest firuzabad. the thickness of the studied section in all 608.95 meters that 220.8 meters belong to the asmari formation and 387.95 meters belong to the gachsaran formation (champe and mol members). in the study area, the asmari formation...

2008
Liu Yong-xue Li Man-chun Song Ke Yang Jing Li Xue

Surface elevation is a critical data for geo-science study. As far as some regions with rapidly-changing in landform, analyzing the surface elevation of different periods help provide scientific basis for regional economic & social sustained development. Jiangsu coast is force tide zone, and the complicated sediment dynamical environment, gently rolling tidal-flat landform, huge spatial differe...

2007
Yusuke Uchiyama

UCHIYAMA, Y., 2007. Hydrodynamics and associated morphological variations on an estuarine intertidal sand flat. Journal of Coastal Research, 23(4), 1015–1027. West Palm Beach (Florida), ISSN 0749-0208. Hydrodynamics, sediment suspension, and morphological response on an estuarine intertidal sand flat in Tokyo Bay, Japan, are examined through a field experiment performed for 16 days in winter 20...

Journal: :Remote Sensing 2013
Yongxue Liu Manchun Li Minxi Zhou Kang Yang Liang Mao

Although the topography of tidal flats is important for understanding their evolution, the spatial and temporal sampling frequency of such data remains limited. The waterline method has the potential to retrieve past tidal flat topography by utilizing large archives of satellite images. This study performs a quantitative analysis of the relationship between the accuracy of tidal flat digital el...

Journal: :Journal of Japan Society on Water Environment 2001

2010
Giulio Mariotti Sergio Fagherazzi

[1] A one-dimensional numerical model for the coupled long-term evolution of salt marshes and tidal flats is presented. The model framework includes tidal currents, wind waves, sediment erosion, and deposition, as well as the effect of vegetation on sediment dynamics. The model is used to explore the evolution of the marsh boundary under different scenarios of sediment supply and sea level rise...

2010
Andrea S. Ogston

A long-term goal of our sediment transport and accumulation investigations is to link sedimenttransport processes to the formation and preservation of event beds in sediment deposits. The general aim of this project is to investigate how forcing processes affect the sediment-transport dynamics that act to import or export fine-grained sediment in intertidal regions. We strive to understand how ...

2015
Xiaofei Lyu Junbao Yu Mo Zhou Bin Ma Guangmei Wang Chao Zhan Guangxuan Han Bo Guan Huifeng Wu Yunzhao Li De Wang

BACKGROUND The tidal flat is one of the important components of coastal wetland systems in the Yellow River Delta (YRD). It can stabilize shorelines and protect coastal biodiversity. The erosion risk in tidal flats in coastal wetlands was seldom been studied. Characterizing changes of soil particle size distribution (PSD) is an important way to quantity soil erosion in tidal flats. METHOD/PRI...

2011
Duk-jin Kim Byung-Hun Choe Wooil M. Moon Sang-Eun Park Ji-Hwan Hwang Yisok Oh

Tidal flat, a transition zone between the ocean and land, forms a unique ecosystem, providing the habitat for various specious of fauna and flora, which is very important in purifying pollutants discharged from land and in providing marine products such as oysters and many kinds of shellfishes [1]. Thus, monitoring and mapping of tidal flat is urgently needed for sustainable managements and the...

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