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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/24791
Title: Tide-rainfall flood quotient: An incisive measure of comprehending a region's response to storm-tide and pluvial flooding
Authors: Prakash Mohanty, MohitP.
Sherly M.A.
Ghosh S.
Karmakar S.
Published in: Environmental Research Letters
Abstract: It is undeniable that coastal regions worldwide are facing unprecedented damages from catastrophic floods attributable to storm-tide (tidal) and extreme rainfall (pluvial). For flood-risk assessment, although recognizing compound impact of these drivers is a conventional practice, the marginal/individual impacts cannot be overlooked. In this letter, we propose a new measure, Tide-Rainfall Flood Quotient (TRFQ), to quantify the driver-specific flood potential of a coastal region arising from storm-tide or rainfall. A set of inundation and hazard maps are derived through a series of numerical and hydrodynamic flood model simulations comprising of design rainfall and design storm-tide. These experiments are demonstrated on three different geographically diverse flood-affected coastal regions in India. The new measure throws light on existing knowledge gaps on the propensity of coastal flooding induced by the marginal/individual contribution of storm-tide and rainfall. It shall prove useful in rationalizing long-term flood management strategies customizable for storm-tide and pluvial dominated global coastal regions. © 2020 The Author(s). Published by IOP Publishing Ltd.
Citation: Environmental Research Letters, 15(6)
URI: https://doi.org/10.1088/1748-9326/ab8092
http://repository.iitr.ac.in/handle/123456789/24791
Issue Date: 2020
Publisher: Institute of Physics Publishing
Keywords: coastal flooding
design rainfall
design storm-tide
flood hazard
tide-rainfall flood quotient
ISSN: 17489318
Author Scopus IDs: 57203633749
56816964100
10341128500
13805286500
Author Affiliations: Mohanty, M.P., Environmental Science and Engineering Department, Indian Institute of Technology Bombay, Mumbai, 400076, India
Sherly, M.A., Department of Regional Water Studies, TERI School of Advanced Studies, Delhi, Vasant Kunj, 110070, India
Ghosh, S., Interdisciplinary Program in Climate Studies, Indian Institute of Technology Bombay, Mumbai, 400076, India, Centre for Urban Science and Engineering, Indian Institute of Technology Bombay, Mumbai, 400076, India, Department of Civil Engineering, Indian Institute of Technology Bombay, Mumbai, 400076, India
Karmakar, S., Environmental Science and Engineering Department, Indian Institute of Technology Bombay, Mumbai, 400076, India, Interdisciplinary Program in Climate Studies, Indian Institute of Technology Bombay, Mumbai, 400076, India, Centre for Urban Science and Engineering, Indian Institute of Technology Bombay, Mumbai, 400076, India
Appears in Collections:Journal Publications [WR]

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