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South Florida’s beachfront buildings found to be sinking faster than expected

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South Florida’s beachfront buildings found to be sinking faster than expected


Schematic illustrating potential scenario to explain the observed subsidence pattern. Credit: Earth and Space Science (2024). DOI: 10.1029/2024EA003852

A team of mechanical, architectural and environmental engineers, geoscientists, and geoinformation specialists affiliated with several institutions in the U.S. and Germany has found that many of the tall, heavy buildings along the coast of South Florida are sinking into the ground much faster than was expected.

In their study published in the journal Earth and Space Science, the group compared satellite images over several years to learn more about ongoing subsidence along multiple beachfronts.

Prior research has shown that many factors can lead to subsidence, in which the altitude of a given parcel of land declines. Natural causes include water movement, earthquakes and gravity. Manmade causes include the heaviness of the built environment, including large buildings, and activities including fracking and landscaping.

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In this new study, the researchers noted that the many tall buildings along many parts of the coast in South Florida appeared to be extremely heavy. They wondered if adding so much weight might be causing the ground beneath them to sink.

To find out, the researchers obtained precise satellite imagery for several of the most popular beaches in South Florida and compared 35 buildings standing on them over time. Modern satellite imagery is so precise it can detect changes in altitude of just a few centimeters. The researchers found that every one of the buildings they measured was sinking, ranging from 2 to 8 cm over the years 2016 to 2023, and that most of them were sinking faster than expected.

South Florida's beachfront buildings found to be sinking faster than expected
Averaged 2016–Oct 2023 LOS velocity for Golden Beach and Sunny Isles Beach North, using Sentinel-1 sensors and SARvey package. Credit: Earth and Space Science (2024). DOI: 10.1029/2024EA003852

The research team also found that there were differences in subsidence between beach areas. The worst, for example, was occurring on Sunny Isles Beach; after that was Surfside, site of the collapse of a 12-story building back in 2021. Miami Beach, they noted, was experiencing the least amount of subsidence.

Because of the building collapse three years ago, the researchers took a closer look at Surfside to find out if subsidence may have been a contributing cause and found no evidence. Even if the building had been sinking, they note, it should not have led to structural damage unless it was sinking unevenly, with one part of the ground under the building sinking faster than another.

They suggest more work is required to determine if that is happening to any of the buildings in South Florida, and if so, to warn their owners.

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More information:
Farzaneh Aziz Zanjani et al, InSAR Observations of Construction‐Induced Coastal Subsidence on Miami’s Barrier Islands, Florida, Earth and Space Science (2024). DOI: 10.1029/2024EA003852

© 2024 Science X Network

Citation:
South Florida’s beachfront buildings found to be sinking faster than expected (2024, December 19)
retrieved 19 December 2024
from https://phys.org/news/2024-12-south-florida-beachfront-faster.html

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Florida man charged in racially motivated attack plot

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Florida man charged in racially motivated attack plot


Federal agents arrested a 20-year-old Sarasota man after finding Nazi propaganda, pipe bombs, guns, ammunition, a pressure cooker, and instructions for making explosives inside his home. Investigators also discovered an index card outlining plans for a racially motivated attack, including placing motion-activated bombs for police. If convicted, he faces up to 20 years in prison.



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FTBOA Partners With Florida Coast Equipment

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FTBOA Partners With Florida Coast Equipment


Florida Coast Equipment has entered into a partnership agreement with the Florida Thoroughbred Breeders’ and Owners’ Association making Kubota the exclusive tractor, mower, utility vehicle, and construction equipment sponsor of the Florida Thoroughbred industry, starting in 2026.

The long-term agreement, announced Dec. 23, places Florida Coast Equipment and the Kubota brand front and center to Florida’s Thoroughbred industry, a $3.2 billion industry with more than 90,000 Thoroughbreds and 33,500 jobs.

The Florida Coast Equipment name will now be prominently displayed throughout the FTBOA headquarters, events, and communications, including an advertising package on FTBOA.com, Wire to Wire, and the Florida Horse Farm and Services Directory.

“This partnership goes beyond sponsorship. Florida Coast Equipment is proud to serve as the local dealer of choice for Florida’s Thoroughbred community—working alongside breeders and owners every day with the equipment, service, and support they rely on,” said Florida Coast Equipment online sales manger Timothy Morris Jr. “Both the FTBOA and Florida Coast Equipment are deeply rooted in Florida agriculture and share a commitment to long-term relationships, stewardship, and doing things the right way. That shared mindset is what makes this partnership a natural fit and positions it for lasting impact across the industry.”

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“When it comes to horsepower, nobody knows it better than Florida’s Thoroughbred industry, and the team at Florida Coast Equipment and Kubota,” FTBOA CEO Lonny Powell said. “This partnership unites two pillars of Florida agriculture, and we couldn’t ask for a better fit.”

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This press release has been edited for content and style by BloodHorse Staff.





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Preview: December 23 vs. Florida | Carolina Hurricanes

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Preview: December 23 vs. Florida | Carolina Hurricanes


RALEIGH, N.C. – The Carolina Hurricanes and Florida Panthers square off for the second time in five days on Tuesday, going head-to-head at Lenovo Center.

When: Tuesday, Dec. 23

Puck Drop: 7:00 p.m. ET

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Listen: 99.9 The Fan, Hurricanes App

Canes Record: 22-10-3 (47 Points, 1st – Metropolitan Division)

Canes Last Game: 6-4 Loss to the Tampa Bay Lightning on Saturday, Dec. 20

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Panthers Record: 19-14-2 (40 Points, T-5th – Atlantic Division)

Panthers Last Game: 6-2 Loss to the St. Louis Blues on Saturday, Dec. 20



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