Abstract
At a time, when the five riparian countries have renewed consultation with each other about the future of the Caspian Sea, it is appropriate to propose a state of the art of the potential natural threats to the regional environment. We present a critical review of geological, meteorological–climatological and hydrological hazards and disasters illustrated by many examples from within the Caspian drainage basin. Our work is set in the frame of an analysis of the factors contributing to the scale of the disasters. A brief overview of the mitigation measures in place and their future development is also included underlining the current limited warning systems (especially transboundary) despite improvements. While analysing past disasters is an essential source of information on which to base new mitigation, current and future conditions have poor or even no analogue in the past. Even though it clearly turns out that earthquakes are certainly the most deadly hazard, Caspian Sea level changes are by far causing the largest economical impact and affect the largest area and thus population. This review has also highlighted the need to create a Caspian database of natural hazards and disasters.
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Notes
A list of settlements of the Russian Federation located in seismically active zones characterized by seismic intensity 6 or more points on the MSK-64 scale for average ground conditions and three levels of seismic hazard (probabilities of exceeding the calculated intensity for 50 years, equal to 10, 5, 1% for OSR-2016-A, OSR-2016-B, OSR-2016-C cards, respectively) can be found on http://seismos-u.ifz.ru/personal/localities.htm.
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Acknowledgements
Some sections related to the North-West Caspian were prepared under a grant from the Ministry of Science and Higher Education of the Russian Federation (grant agreement no. 075-15-2020-928). We are grateful to V. Vinogradova (IGRAS, Russia) for help in collecting weather data. G. Aslan (BRGM, France) has kindly provided Figure 9. Our gratitude is going to K. Arpe and M. Eglème who commented constructively the manuscript before submission. We are grateful to the reviewers for their constructive comments.
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Leroy, S.A.G., Gracheva, R. & Medvedev, A. Natural hazards and disasters around the Caspian Sea. Nat Hazards 114, 2435–2478 (2022). https://doi.org/10.1007/s11069-022-05522-5
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DOI: https://doi.org/10.1007/s11069-022-05522-5