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Mining-induced Land Subsidence Detected by Sentinel-1 SAR Images:An Example from the Historical Tadeusz Kościuszko Salt Mine at Wapno, Greater Poland Voivodeship, Poland

Kim Thi Thu Huong, Tran Hong Ha, Bui Khac Luyen, Lipecki Tomasz

Inżynieria Mineralna

2021

no. 2

41--52

There are many mines in Poland that have been in operation for over 100 years, with the Tadeusz Kościuszko mine being a large salt mine in Wapno, northern Poland. The mine was closed in 1977 due to the greatest catastrophe in the history of Polish mining, but in the first days of 2021, a very large hole has been created in this area due to land subsidence. This article uses InSAR technology with Sentinel-1 images to determine settlement and ongoing deformation in this mine. The study results are useful for policymakers, managers, and authorities because land subsidence has caused serious and dangerous effects on people living in the area. The results processed by the Persistent Scatterer InSAR (PSInSAR) method with the Sentinel Application Platform and the Stanford Method for Persistent Scatterers software packages show that deformation in the Wapno village area has been detected in both residential and non-residential areas, with maximum subsidence of up to −19 mm/yr. The subsidence in the mine reaches −12 mm/yr, and that at surrounding area range from 0 to −18.8 mm/yr.