Analysis of the coastal erosion and accretion in Haikou Bay by remote sensing

ZHANG Xiao-dong; SHEN Si-min; ZHU Shou-xian; ZHANG Wen-jing; HUANG Ji-wen

doi:10.3969/j.issn.1000-5641.2015.04.006

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Sep. 2015

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ZHANG Xiao-dong, SHEN Si-min, ZHU Shou-xian, ZHANG Wen-jing, HUANG Ji-wen. Analysis of the coastal erosion and accretion in Haikou Bay by remote sensing[J]. Journal of East China Normal University (Natural Sciences), 2015, (4): 42-53. doi: 10.3969/j.issn.1000-5641.2015.04.006

Citation:

ZHANG Xiao-dong, SHEN Si-min, ZHU Shou-xian, ZHANG Wen-jing, HUANG Ji-wen. Analysis of the coastal erosion and accretion in Haikou Bay by remote sensing[J]. Journal of East China Normal University (Natural Sciences), 2015, (4): 42-53. doi: 10.3969/j.issn.1000-5641.2015.04.006

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Analysis of the coastal erosion and accretion in Haikou Bay by remote sensing

doi: 10.3969/j.issn.1000-5641.2015.04.006

Received Date: 2014-03-11
Publish Date: 2015-07-25

Abstract

Abstract

The analysis of coastal erosion and accretion, based on the remote sensing water line, is better than that using field observations because of its convenience, quickness and more data. However, this method hasnt been applied to Haikou Bay. Four types of water index for extracting waterline from Landsat sensing image are checked by observations in Haikou Bay, in which the water index of NDWI is proved to be the best. The waterlines of 15 Landsat sensing images in 19942013 are extracted by NDWI, with which the evolution of the beach slope between high tidal level and low tidal level is analyzed. And the results show that the beach slope is basically stable with the value of 3.7~4.2. Then the coastal erosion and accretion are analyzed using the extracted waterlines and the beach slope. The character of erosion and accretion isnt uniform in the beach. Xixiu Beach and Jiari Beach have been eroded, and the eroded depth is 0.36 m near the high tidal level and 0.30 m near the low tidal level, the eroded speed is 1.9 cm/a near the high tidal level and 1.8 cm/a near the low tidal level.
- Haikou Bayremote sensingwaterlineerosion and accretionwater index,

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References(1)

References

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