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Remote Sensing Technology and Application  2015, Vol. 30 Issue (2): 345-352    DOI:
    
Coastline Mapping and Change Detection along Hangzhou Bay Using Remotely Sensed Imagery
Feng Yongjiu,Yuan Jiayu,Song Lijun,Jiang Fang
(College of Marine Sciences,Shanghai Ocean University,Shanghai 201306,China)
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Abstract  

Based on the integrated methods of ISODATA classification,map generalization,discrete surface features removal and shoreline tracking,this paper implemented the shoreline extraction by ENVI and ArcGIS.With four Landsat images acquired in 1979,1987,2000 and 2005,the shorelines along Hangzhou Bay were extracted.In addition,the shorelines were resampled to 10 levels at different spatial resolution from 30 to 960 m,and the fractal dimensions of shorelines and its variation were computed.Six selected coastal areas witnessed drastic shorelines changes were analyzed.The results demonstrated that the shoreline length of Hangzhou Bay has increased by 37.5 km from 1979 to 2005.Amongst the shoreline changes along Hangzhou Bay(includes both North and South Shores),the increases along North Shore(24.9 km)were larger than that of South Shore(12.5 km).The goodness\|of\|fits shows that there is a strong feature for shoreline of Hangzhou Bay,and the fractal dimension increased both from 1979 to 1987 and from 2000 to 2005,but it decreased from 1987 to 2000.An analysis of the six selected coastal areas,i.e.Ningbo,Shaoxing,Jiaxing,Jinshan,Fengxian and Luchaogang,illustrated that the shorelines of Jinshan,Fengxian and Luchaogang were mainly affected by the sediment deposition,harbor construction,coastal industrial constructions and land reclamation,whereas the shorelines of Ningbo,Shaoxing and Jiaxing were mainly affected by natural conditions,offshore aquaculture and intertidal zone reclamation.

Key words:  Shoreline      Hangzhou Bay      Remote sensing imagery      Change analysis      Spatial fractal     
Received:  23 September 2013      Published:  08 May 2015
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Feng Yongjiu
Yuan Jiayu
Song Lijun
Jiang Fang

Cite this article: 

Feng Yongjiu,Yuan Jiayu,Song Lijun,Jiang Fang. Coastline Mapping and Change Detection along Hangzhou Bay Using Remotely Sensed Imagery. Remote Sensing Technology and Application, 2015, 30(2): 345-352.

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http://www.rsta.ac.cn/EN/     OR     http://www.rsta.ac.cn/EN/Y2015/V30/I2/345

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