EVALUATION OF COASTLINE DEVELOPMENT OVER PERIODS  IN CUA VIET AREA BY APPLICATION OF REMOTE SENSING TECHNIQUE AND GEOGRAPHIC INFORMATION SYSTEM (GIS)

Dao Dinh Cham; Nguyen Thai Son

doi:10.15625/1859-3097/16/4/7681

Author affiliations

Authors

Dao Dinh Cham Institute of Geography, Vietnam Academy of Science and Technology
Nguyen Thai Son Institute of Geography, Vietnam Academy of Science and Technology

DOI:

https://doi.org/10.15625/1859-3097/16/4/7681

Keywords:

Remote sensing technique, GIS, coastline, outlet area, Cua Viet.

Abstract

The development of the coastline in Cua Viet outlet area from 1952 to 2015 was quantitatively evaluated using remote sensing technique and geographic information system (GIS). The result of the research shows that in the Cua Viet outlet area the accretion and erosion phenomena occur in a very complex manner, with erosion predominating over accretion in both scale and intensity, in which the coast sections with the largest scale and highest intensity of erosion are usually located near the outlet (both inside and outside the outlet). In the coast section inside the outlet, the erosion on the northern side occurs more intensively than on the southern side, with the erosion rate reaching -1.51 to -2.24 m/year, whereas the accretion rate is 1.15 to 1.70 m/year. The ratio between the erosional and accretional rates is 1.0 to 1.5 times. In the coast section outside the outlet, erosion occurs much more intensively, with its rate from - 2.74 to - 8.18 m/year, whereas the accretion rate is only 0.12 to 2.41 m/year. The ratio between the erosion and accretion is 1.0 to 38 times. Recently, the newly-built Cua Viet seawall has partially reduced the process of coastal erosion, the beach starts to consolidate in the foot area.

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References

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