Coastal transgression and regression from 1980 to 2020 and shoreline forecasting for 2030 and 2040, using DSAS along the southern coastal tip of Peninsular India

IF 2.8 4区地球科学 Q2 GEOCHEMISTRY & GEOPHYSICS

Geodesy and Geodynamics Pub Date : 2022-11-01 DOI:10.1016/j.geog.2022.04.004

S. Chrisben Sam, B. Gurugnanam

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引用次数: 8

Abstract

This study explains the multi-decadal shoreline changes along the coast of Kanyakumari from 1980 to 2020. The shorelines are extracted from the Landsat images to estimate the shoreline dynamics and future predictions using Digital Shoreline Analysis System (DSAS). By the estimation of End Point Rate (EPR) and Linear Regression Rate (LRR), it is quantified that the maximum erosion is 5.01 m/yr (EPR) and 6.13 m/yr (LRR) consistently with the maximum accretion of 3.77 m/yr (EPR) and 3.11 m/yr (LRR) along the entire coastal stretch of 77 km. The future shoreline predicted using the Kalman filter forecasted that Inayam, Periyakattuthurai and Kodimunai are highly prone to erosion with a shift of 170 m, 157 m and 145 m by 2030 and 194 m, 182 m and 165 m by 2040 towards the land. Also, the western coast is highly prone to erosion and it is predicted that certain villages are prone to loss of economy and livelihood. The outcome of this study may guide the coastal researchers to understand the evolution and decision-makers to evolve with alternative sustainable management plans in the future.

查看原文本刊更多论文

1980年至2020年的海岸海侵和海退以及2030年和2040年的海岸线预测，使用印度半岛南部海岸尖端的DSAS

本研究解释了1980 - 2020年坎亚库马里海岸多年代际的海岸线变化。利用数字海岸线分析系统(DSAS)从陆地卫星图像中提取海岸线，以估计海岸线动态和未来预测。通过终点率(End Point Rate, EPR)和线性回归率(Linear Regression Rate, LRR)的估算，量化了整个77 km岸段的最大侵蚀量为5.01 m/yr (EPR)和6.13 m/yr (LRR)，最大增生量为3.77 m/yr (EPR)和3.11 m/yr (LRR)。利用卡尔曼滤波预测的未来海岸线预测，Inayam、Periyakattuthurai和Kodimunai极易受到侵蚀，到2030年将向陆地移动170米、157米和145米，到2040年将向陆地移动194米、182米和165米。此外，西部海岸极易受到侵蚀，预计某些村庄可能会失去经济和生计。本研究的结果可以指导沿海研究人员了解这一演变，并指导决策者在未来制定可替代的可持续管理计划。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Geodesy and Geodynamics GEOCHEMISTRY & GEOPHYSICS-

CiteScore

4.40

自引率

4.20%

发文量

566

审稿时长

69 days

期刊介绍： Geodesy and Geodynamics launched in October, 2010, and is a bimonthly publication. It is sponsored jointly by Institute of Seismology, China Earthquake Administration, Science Press, and another six agencies. It is an international journal with a Chinese heart. Geodesy and Geodynamics is committed to the publication of quality scientific papers in English in the fields of geodesy and geodynamics from authors around the world. Its aim is to promote a combination between Geodesy and Geodynamics, deepen the application of Geodesy in the field of Geoscience and quicken worldwide fellows'' understanding on scientific research activity in China. It mainly publishes newest research achievements in the field of Geodesy, Geodynamics, Science of Disaster and so on. Aims and Scope: new theories and methods of geodesy; new results of monitoring and studying crustal movement and deformation by using geodetic theories and methods; new ways and achievements in earthquake-prediction investigation by using geodetic theories and methods; new results of crustal movement and deformation studies by using other geologic, hydrological, and geophysical theories and methods; new results of satellite gravity measurements; new development and results of space-to-ground observation technology.