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InSAR detection of localized subsidence induced by sinkhole activity in suburban west-central Florida

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doi: 10.5194/piahs-382-155-2020
Authors:Oliver-Cabrera, Talib; Wdowinski, Shimon; Kruse, Sarah; Robinson, Tonian
Author Affiliations:Primary:
Florida International University, Department of Earth and Environment, Miami, FL, United States
Other:
Deltares Research Institute, Netherlands
University of South Florida, United States
Volume Title:Subsidence and society
Volume Authors:Fokker, Peter A., editor; Erkens, Gilles
Source:Proceedings - International Association of Hydrological Sciences, Vol.382, p.155-159; 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. 27 refs.; illus.
Summary:Sinkhole activity in west-central Florida is a major hazard for people and property. Increasing frequency of sinkhole collapse is often related to an accelerated use of groundwater and land resources. In this work, we use radar interferometry acquired over a selected region in Hernando County in west-central Florida to observe small localized deformation possibly caused by sinkhole activity. The data used for the study consist of acquisitions from one TerraSAR-X frame covering a time span of approximately 1.7 years with spatial resolution of 0.25 by 0.60 m. We applied the Persistent Scatterer Interferometry (PSI) technique using the Stanford Method for Persistent Scatterers (StaMPS). Results reveal several areas of localized subsidence at rates ranging from span class="inline-formula"-3.7/span to span class="inline-formula"-4.9/span mm yrspan class="inline-formula"-1/span. Ground truthing and background verification of the subsiding locations confirmed the relationship of the subsidence with sinkhole presence.
Subjects:Deformation; Detection; Geologic hazards; Ground water; High-resolution methods; InSAR; Land subsidence; Natural hazards; Radar methods; Remote sensing; SAR; Satellite methods; Sinkholes; Solution features; TerraSAR-X; Central Florida; Florida; Hernando County Florida; United States; StaMPS
Coordinates:N270000 N300000 W0810000 W0840000
Record ID:890501-27
Copyright Information:GeoRef, Copyright 2021 American Geosciences Institute. Reference includes data from Copernicus Gesellschaft, Katlenburg-Lindau, Germany
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