InSAR Observations of Construction‐Induced Coastal Subsidence on Miami's Barrier Islands, Florida
Abstract This study utilizes Interferometric Synthetic Aperture Radar (InSAR) to examine subsidence along the coastal strip of the Miami barrier islands from 2016 to 2023. Using Sentinel‐1 data, we document vertical displacements ranging from 2 to 8 cm, affecting a total of 35 coastal buildings and...
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| Format: | Article |
| Language: | English |
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American Geophysical Union (AGU)
2024-12-01
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| Series: | Earth and Space Science |
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| Online Access: | https://doi.org/10.1029/2024EA003852 |
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| author | Farzaneh Aziz Zanjani Falk Amelung Andreas Piter Khaled Sobhan Amin Tavakkoliestahbanati Gregor P. Eberli Mahmud Haghshenas Haghighi Mahdi Motagh Pietro Milillo Sara Mirzaee Antonio Nanni Esber Andiroglu |
| author_facet | Farzaneh Aziz Zanjani Falk Amelung Andreas Piter Khaled Sobhan Amin Tavakkoliestahbanati Gregor P. Eberli Mahmud Haghshenas Haghighi Mahdi Motagh Pietro Milillo Sara Mirzaee Antonio Nanni Esber Andiroglu |
| author_sort | Farzaneh Aziz Zanjani |
| collection | DOAJ |
| description | Abstract This study utilizes Interferometric Synthetic Aperture Radar (InSAR) to examine subsidence along the coastal strip of the Miami barrier islands from 2016 to 2023. Using Sentinel‐1 data, we document vertical displacements ranging from 2 to 8 cm, affecting a total of 35 coastal buildings and their vicinity. About half of the subsiding structures are younger than 2014 and at the majority of them subsidence decays with time. This correlation suggests that the subsidence is related to construction activities. In northern and central Sunny Isles Beach, where 23% of coastal structures were built during the last decade, nearly 70% are experiencing subsidence. The majority of the older subsiding structures show sudden onset or sudden acceleration of subsidence, suggesting that this is due to construction activities in their vicinity; we have identified subsidence at distance of 200 m, possibly up to 320 m, from construction sites. We attribute the observed subsidence to load‐induced, prolonged creep deformation of the sandy layers within the limestone, which is accelerated, if not instigated, by construction activities. Distant subsidence from a construction site could indicate extended sandy deposits. Anthropogenic and natural groundwater movements could also be driving the creep deformation. This study demonstrates that high‐rise construction on karstic barrier islands can induce creep deformation in sandy layer within the limestone succession persisting for a decade or longer. It showcases the potential of InSAR technology for monitoring both building settlement and structural stability. |
| format | Article |
| id | doaj-art-d8de22266eeb4e11ab86693b606d7b8d |
| institution | OA Journals |
| issn | 2333-5084 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | American Geophysical Union (AGU) |
| record_format | Article |
| series | Earth and Space Science |
| spelling | doaj-art-d8de22266eeb4e11ab86693b606d7b8d2025-08-20T02:10:17ZengAmerican Geophysical Union (AGU)Earth and Space Science2333-50842024-12-011112n/an/a10.1029/2024EA003852InSAR Observations of Construction‐Induced Coastal Subsidence on Miami's Barrier Islands, FloridaFarzaneh Aziz Zanjani0Falk Amelung1Andreas Piter2Khaled Sobhan3Amin Tavakkoliestahbanati4Gregor P. Eberli5Mahmud Haghshenas Haghighi6Mahdi Motagh7Pietro Milillo8Sara Mirzaee9Antonio Nanni10Esber Andiroglu11Deparment of Marine Geoscience, Rosenstiel School of Marine and Atmospheric and Earth Science University of Miami Miami FL USADeparment of Marine Geoscience, Rosenstiel School of Marine and Atmospheric and Earth Science University of Miami Miami FL USALeibniz University Hannover Institute of Photogrammetry and Geoinformation Hannover GermanyDepartment of Civil, Environmental, and Geomatics Engineering Florida Atlantic University Boca Raton FL USADepartment of Civil and Environmental Engineering University of Houston Houston TX USADeparment of Marine Geoscience, Rosenstiel School of Marine and Atmospheric and Earth Science University of Miami Miami FL USALeibniz University Hannover Institute of Photogrammetry and Geoinformation Hannover GermanyLeibniz University Hannover Institute of Photogrammetry and Geoinformation Hannover GermanyDepartment of Civil and Environmental Engineering University of Houston Houston TX USACalifornia Institute of Technology (Caltech) Pasadena CA USADepartment of Civil and Architectural Engineering, College of Engineering University of Miami Miami FL USADepartment of Civil and Architectural Engineering, College of Engineering University of Miami Miami FL USAAbstract This study utilizes Interferometric Synthetic Aperture Radar (InSAR) to examine subsidence along the coastal strip of the Miami barrier islands from 2016 to 2023. Using Sentinel‐1 data, we document vertical displacements ranging from 2 to 8 cm, affecting a total of 35 coastal buildings and their vicinity. About half of the subsiding structures are younger than 2014 and at the majority of them subsidence decays with time. This correlation suggests that the subsidence is related to construction activities. In northern and central Sunny Isles Beach, where 23% of coastal structures were built during the last decade, nearly 70% are experiencing subsidence. The majority of the older subsiding structures show sudden onset or sudden acceleration of subsidence, suggesting that this is due to construction activities in their vicinity; we have identified subsidence at distance of 200 m, possibly up to 320 m, from construction sites. We attribute the observed subsidence to load‐induced, prolonged creep deformation of the sandy layers within the limestone, which is accelerated, if not instigated, by construction activities. Distant subsidence from a construction site could indicate extended sandy deposits. Anthropogenic and natural groundwater movements could also be driving the creep deformation. This study demonstrates that high‐rise construction on karstic barrier islands can induce creep deformation in sandy layer within the limestone succession persisting for a decade or longer. It showcases the potential of InSAR technology for monitoring both building settlement and structural stability.https://doi.org/10.1029/2024EA003852InSARsubsidenceconstructions activitiesMiamiFloridasettlement of buildings |
| spellingShingle | Farzaneh Aziz Zanjani Falk Amelung Andreas Piter Khaled Sobhan Amin Tavakkoliestahbanati Gregor P. Eberli Mahmud Haghshenas Haghighi Mahdi Motagh Pietro Milillo Sara Mirzaee Antonio Nanni Esber Andiroglu InSAR Observations of Construction‐Induced Coastal Subsidence on Miami's Barrier Islands, Florida Earth and Space Science InSAR subsidence constructions activities Miami Florida settlement of buildings |
| title | InSAR Observations of Construction‐Induced Coastal Subsidence on Miami's Barrier Islands, Florida |
| title_full | InSAR Observations of Construction‐Induced Coastal Subsidence on Miami's Barrier Islands, Florida |
| title_fullStr | InSAR Observations of Construction‐Induced Coastal Subsidence on Miami's Barrier Islands, Florida |
| title_full_unstemmed | InSAR Observations of Construction‐Induced Coastal Subsidence on Miami's Barrier Islands, Florida |
| title_short | InSAR Observations of Construction‐Induced Coastal Subsidence on Miami's Barrier Islands, Florida |
| title_sort | insar observations of construction induced coastal subsidence on miami s barrier islands florida |
| topic | InSAR subsidence constructions activities Miami Florida settlement of buildings |
| url | https://doi.org/10.1029/2024EA003852 |
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