On the day of the horrific condo tower collapse in Surfside, Fla., We note Shimon Wdowinski, a professor in the Department of Earth and Environment at Florida International University, completed a recent study of the condo building and understood that it had sunk. The study also revealed other areas in Miami where the ground is unstable as the federal government declared in the afternoon it would launch an investigation.
Wdowinski’s study, has a title “The subsidence of local land in Miami Beach (FL) and Norfolk (VA) and its contribution to flood risk in coastal communities in the U.S. Atlantic” co -authored with Simone Fiaschi and published in ScienceDirect, revealed the Champlain Towers South condo complex “has a kind of unusual movement” and sank by 2 millimeters a year in the 1990s.
According to USA Today, Wdowinski and Fiaschi did not notify Surfside city officials about the sinking issue, nor has anyone in the city government been alarmed or even bothered to review the study because it was primarily focuses on flood hazards, not engineering hazards due to landslides.
“Wdownski says he doesn’t believe anyone in the city or state government has a reason to know the findings of the study. Much of it focuses on potential flood hazards, not concerns. in engineering. ”
The researchers used Interferometric Synthetic Aperture Radar, or InSAR, with data from 1992–1999 and found the Champlain Towers South condo complex submerged to the Earth.
“In some locations, such as the eastern part of the town, the observed sinking of a 12-story high condominium building (top of the black circle in Fig. 3A) .The observed rate the bottom is in the 1-3 mm / yr range, with an uncertain level of 0.6-0.8 mm / yr.Even if higher dip rates up to 3.8 mm / yr are registered on artificial islands which is to the west of the town, the faulty sets of the stage which bring more uncertainty cannot be separated from the said areas.
Why the researchers used only data between 1992–1999 is unknown. So the obvious question is, what has happened since? Over the past two decades, floods, hurricanes, and hurricanes have hit South Florida. – READ MORE
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