The coastline remote sensing survey for Zhao Shu Island in Xisha Islands based on WorldView-2

Li Li; Chang Zhong; Fanping Kong

doi:10.1117/12.2069483

18 November 2014 The coastline remote sensing survey for Zhao Shu Island in Xisha Islands based on WorldView-2

Li Li, Chang Zhong, Fanping Kong

Proceedings Volume 9299, International Symposium on Optoelectronic Technology and Application 2014: Optical Remote Sensing Technology and Applications; 929904 (2014) https://doi.org/10.1117/12.2069483
Event: International Symposium on Optoelectronic Technology and Application 2014, 2014, Beijing, China

Abstract

Due to diastrophism, tide action and human activities, the coastline is always in flux. There are lots of coral islands in the south sea of China. Remote sensing survey for the coastline not only can reassert the necessity and importance of coral protection, but also can provide basic data and scientific basis for island ecologic protection, reasonable utilization of land resources. The study area named Zhao Shu Island lies in Jintong Islands of Xisha. It is a coral island which has people inhabited. Using WorldView-2 satellite remote sensing images as data sources we carry out three phases of coastline investigation and monitoring. The satellite data phases are 2002, 2010 and 2013. Firstly, affirm the bands valuable for color composition on the basis of spectral and correlation analysis. Then extract the coastline by a series of image process, such as image correction, fusion, waterline extraction and coastline revision. Finally determine the coastline types and length by artificial interpretation. The results show that the island length is gradually smaller, which means the island area is reducing. The beach bedrock coast in northern island was eroded seriously especially during the period between 2010 and 2013. In addition, the shoal head shape in the western island changed a lot.

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Li Li, Chang Zhong, and Fanping Kong "The coastline remote sensing survey for Zhao Shu Island in Xisha Islands based on WorldView-2", Proc. SPIE 9299, International Symposium on Optoelectronic Technology and Application 2014: Optical Remote Sensing Technology and Applications, 929904 (18 November 2014); https://doi.org/10.1117/12.2069483

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KEYWORDS

Remote sensing

Image fusion

Head

Composites

Image processing

Ocean optics

Image enhancement

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