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Modelling the combined impacts of sea-level rise and land subsidence on storm tides induced flooding of the Huangpu River in Shanghai, China

journal contribution
posted on 2013-04-25, 08:28 authored by Jie Yin, Dapeng YuDapeng Yu, Zhane Yin, Jun Wang, Shiyuan Xu
This paper presents a scenario-based study that investigates the interaction between sea-level rise and land subsidence on the storm tides induced fluvial flooding in the Huangpu river floodplain. Two projections of relative sea level rise (RSLR) were presented (2030 and 2050). Water level projections at the gauging stations for different return periods were generated using a simplified algebraic summation of the eustatic sea-level rise, land subsidence and storm tide level. Frequency analysis with relative sea level rise taken into account shows that land subsidence contributes to the majority of the RSLR (between 60 % and 70 %). Furthermore, a 1D/2D coupled flood inundation model (FloodMap) was used to predict the river flow and flood inundation, after calibration using the August 1997 flood event. Numerical simulation with projected RSLR suggests that, the combined impact of eustatic sea-level rise and land subsidence would be a significantly reduced flood return period for a given water level, thus effective degradation of the current flood defences. In the absence of adaptation measures, storm flooding will cause up to 40 % more inundation, particularly in the upstream of the river

History

School

  • Social Sciences

Department

  • Geography and Environment

Citation

YIN, J. ... et al, 2013. Modelling the combined impacts of sea-level rise and land subsidence on storm tides induced flooding of the Huangpu River in Shanghai, China. Climatic change, April 2013.

Publisher

© Springer Science+Business Media Dordrecht

Version

  • VoR (Version of Record)

Publication date

2013

Notes

This article is closed access.

ISSN

0165-0009

eISSN

1573-1480

Language

  • en

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