Latest News on Coastal Erosion : March -2020

Global Warming and Coastal Erosion

One of the most certain consequences of global warming is an increase of global (eustatic) sea level. The resulting inundation from rising seas will heavily impact low-lying areas; at least 100 million persons live within one meter of mean sea level and are at increased risk in the coming decades. [1]

Coastal Erosion and Transgressive Stratigraphy

Unconformities of transgressive sequences commonly occur within the basal beds of the sequences, not below them. Such unconformities, called ravinements, separate basal marsh, lagoon, estuarine, and beach deposits from overlying marine sands. Study of the ravinements in the Bay of Fundy shows that they are cut mainly by surf action along a narrow zone at the foot of the shore face. [2]

Coastal erosion and mangrove progradation of Southern Thailand

Approximately 60% of the southern Thai coastline used to be occupied by mangroves according to the first mangrove forest assessment in 1961. During the past three decades, these mangrove areas have been reduced to about 50% with less than 10% left on the east coast. [3]

Coastal Geo-environmental Hazards and Its Management

This paper assessed and cartographically analysed the impact of recent coastal geo-environmental hazards upon coastal resources and also human life. Cyclonic storms, high wave action, tidal bore, coastal flood and also coastal erosion are the main geo-environmental hazards over the Bay of Bengal coastal area especially Kanthi coastal tract of west Bengal. Sea surface temperature over a period of 50 years was observed through this study to be changing up to the magnitude of about 0.019°C/year over the Bay of Bengal between the period from 1972-2005. [4]

Rainfall Trend Analysis and Adaptation Strategies to Manage Climate-Induced Crisis in Coastal Zone of Karnataka, India

Analysis of deviation of precipitation in space, time and quantities, and its associated effect on the ecology is vital in coastal environments where the resource is highly variable and unpredictable. The present study is mainly concerned with the changing trend of rainfall and adaptation in a coastal region of Karnataka. [5]

Reference

[1] Zhang, K., Douglas, B.C. and Leatherman, S.P., 2004. Global warming and coastal erosion. Climatic change, 64(1-2), p.41.

[2] Swift, D.J., 1968. Coastal erosion and transgressive stratigraphy. The Journal of Geology76(4), pp.444-456.

[3] Thampanya, U., Vermaat, J.E., Sinsakul, S. and Panapitukkul, N., 2006. Coastal erosion and mangrove progradation of Southern Thailand. Estuarine, coastal and shelf science, 68(1-2), pp.75-85.

[4] Patra, S. (2017) “Coastal Geo-environmental Hazards and Its Management”, Archives of Current Research International, 10(3), pp. 1-12. doi: 10.9734/ACRI/2017/36601.

[5] Kumar, H. M. V., Shivamurthy, M. and Lunagaria, M. M. (2017) “Rainfall Trend Analysis and Adaptation Strategies to Manage Climate-Induced Crisis in Coastal Zone of Karnataka, India”, Journal of Scientific Research and Reports, 13(5), pp. 1-11. doi: 10.9734/JSRR/2017/32709

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