The Spatio-Temporal Evolution of River Island Based on Landsat Satellite Imagery, Hydrodynamic Numerical Simulation and Observed Data

doi:10.3390/rs10122046

CORC > 自然资源部第一海洋研究所 > 自然资源部第一海洋研究所 > 业务部门 > 海洋环境与数值模拟研究室

	The Spatio-Temporal Evolution of River Island Based on Landsat Satellite Imagery, Hydrodynamic Numerical Simulation and Observed Data
	Shi, Haiyun 1,2; Cao, Yuhan 1; Dong, Changming 1,3; Xia, Changshui 2,4; Li, Chunhui 1
刊名	REMOTE SENSING
	2018-12
卷号	10 期号:12
关键词	river island an unstructured-grid, Finite-Volume Coastal Ocean Model Landsat Thematic Mapper/Enhanced Thematic Mapper hydrodynamic numerical simulation digital image processing Yangzhong City the Yangtze River
ISSN号	2072-4292
DOI	10.3390/rs10122046
英文摘要	A river island is a shaped sediment accumulation body with its top above the water's surface in crooked or branching streams. In this paper, four river islands in Yangzhong City in the lower reaches of the Yangtze River were studied. The spatio-temporal evolution information of the islands was quantitatively extracted using the threshold value method, binarization model, and cluster analysis, based on Thematic Mapper (TM) and Enhanced Thematic Mapper+ (ETM+) images of the Landsat satellite series from 1985 to 2015. The variation mechanism and influencing factors were analyzed using an unstructured-grid, Finite-Volume Coastal Ocean Model (FVCOM) hydrodynamic numerical simulation, as well as the water-sediment data measured by hydrological stations. The annual average total area of these islands was 251,224.46 m(2) during 1985-2015, and the total area first increased during 1985-2000 and decreased later during 2000-2015. Generally, the total area increased during these 30 years. Taipingzhou island had the largest area and the biggest changing rate, Xishadao island had the smallest area, and Zhongxinsha island had the smallest changing rate. The river islands' area change was influenced by river runoff, sediment discharge, and precipitation, and sediment discharge proved to be the most significant natural factor in island evolution. River island evolution was also found to be affected by both runoff and oceanic tide. The difference in flow-field caused silting up in the Leigongdao Island and the head of Taipingzhou Island, and a serious reduction in the middle and tail of Taipingzhou Island. The method used in this paper has good applicability to river islands in other rivers around the world.
资助项目	Natural Science Foundation of Jiangsu Province[BK20180803]
WOS研究方向	Remote Sensing
语种	英语
出版者	MDPI
WOS记录号	WOS:000455637600188
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/10871]
专题	业务部门_海洋环境与数值模拟研究室
通讯作者	Dong, Changming
作者单位	1.Nanjing Univ Informat Sci & Technol, Sch Marine Sci, Nanjing 210044, Jiangsu, Peoples R China 2.State Ocean Adm, Key Lab Marine Sci & Numer Modeling, Inst Oceanog 1, Qingdao 266061, Peoples R China 3.Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA 90095 USA 4.Qingdao Natl Lab Marine Sci & Technol, Lab Reg Oceanog & Numer Modeling, Qingdao 266237, Peoples R China
推荐引用方式 GB/T 7714	Shi, Haiyun,Cao, Yuhan,Dong, Changming,et al. The Spatio-Temporal Evolution of River Island Based on Landsat Satellite Imagery, Hydrodynamic Numerical Simulation and Observed Data[J]. REMOTE SENSING,2018,10(12).
APA	Shi, Haiyun,Cao, Yuhan,Dong, Changming,Xia, Changshui,&Li, Chunhui.(2018).The Spatio-Temporal Evolution of River Island Based on Landsat Satellite Imagery, Hydrodynamic Numerical Simulation and Observed Data.REMOTE SENSING,10(12).
MLA	Shi, Haiyun,et al."The Spatio-Temporal Evolution of River Island Based on Landsat Satellite Imagery, Hydrodynamic Numerical Simulation and Observed Data".REMOTE SENSING 10.12(2018).