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Land subsidence contribution to coastal flooding hazard in southeast Florida

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doi: 10.5194/piahs-382-207-2020
Authors:Wdowinski, Shimon; Oliver-Cabrera, Talib; Fiaschi, Simone
Author Affiliations:Primary:
Florida International University, Department of Earth and Environment, Miami, FL, United States
Deltares Research Institute, Netherlands
University College Dublin, UCD School of Earth Sciences, Dublin, Ireland
Volume Title:Subsidence and society
Volume Authors:Fokker, Peter A., editor; Erkens, Gilles
Source:Proceedings - International Association of Hydrological Sciences, Vol.382, p.207-211; Tenth international symposium on Land subsidence; living with subsidence, Delft, Netherlands, May 17-21, 2021, edited by Peter A. Fokker and Gilles Erkens. Publisher: Copernicus Publications for International Association of Hydrological Scientists (IAHS), Gottingen, Germany. ISSN: 2199-8981
Publication Date:2020
Note:In English. 10 refs.; illus.
Summary:Over the past decade, several coastal communities in southeast Florida have experienced a significant increase in flooding frequency, which has caused significant disturbance to property, commerce, and overall quality of life. The increased flooding frequency reflects the contribution of global, regional, and local processes that affect elevation difference between coastal communities and rising sea level. In a recent project, funded by the state of Florida, we monitor coastal subsidence in southeast Florida using GPS and InSAR observations, in order to evaluate the contribution of local subsidence to the increased coastal flooding hazard. Preliminary results reveal that subsidence occurs in localized patches (< 0.02 kmspan class="inline-formula"2)/span with magnitude of up to 3 mm yrspan class="inline-formula"-1/span, in urban areas built on reclaimed marshland. These results suggest that contribution of local land subsidence affect only small areas along the southeast Florida coast, but in those areas coastal flooding hazard is significantly higher compared to non-subsiding areas.
Subjects:Elevation; Floods; Geodesy; Geologic hazards; Global navigation satellite systems; Global Positioning System; InSAR; Land subsidence; Marshes; Mires; Monitoring; Natural hazards; Periodicity; Radar methods; Reclamation; SAR; Sea-level changes; Shorelines; Urban environment; Wetlands; Florida; Miami Florida; Miami-Dade County Florida; United States
Coordinates:N253900 N255700 W0801200 W0802400
N254600 N255200 W0800800 W0801000
Record ID:890501-36
Copyright Information:GeoRef, Copyright 2021 American Geosciences Institute. Reference includes data from Copernicus Gesellschaft, Katlenburg-Lindau, Germany
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