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Authors: Argentieri, A.* 
Carluccio, R.* 
Cecchini, F.* 
Chiappini, M.* 
Ciotoli, G.* 
De Ritis, R.* 
Di Filippo, M.* 
Di Nezza, M.* 
Marchetti, M.* 
Margottini, S.* 
Materni, V.* 
Meloni, F.* 
Nardi, A.* 
Rotella, G.* 
Sapia, V.* 
Venuti, A.* 
Title: Early stage sinkhole formation in the acque albule basin of central Italy from geophysical and geochemical observations
Issue Date: Mar-2015
Series/Report no.: /191 (2015)
DOI: 10.1016/j.enggeo.2015.03.010
Keywords: Acque Albule basin, sinkholes, subsidence, geophysical prospecting
Subject Classification04. Solid Earth::04.02. Exploration geophysics::04.02.99. General or miscellaneous 
04. Solid Earth::04.02. Exploration geophysics::04.02.01. Geochemical exploration 
04. Solid Earth::04.02. Exploration geophysics::04.02.02. Gravity methods 
04. Solid Earth::04.02. Exploration geophysics::04.02.04. Magnetic and electrical methods 
04. Solid Earth::04.02. Exploration geophysics::04.02.06. Seismic methods 
04. Solid Earth::04.02. Exploration geophysics::04.02.07. Instruments and techniques 
Abstract: Sinkhole occurrence along the Tyrrhenian margin of the Central Apennines is of great importance for applied research, land management and civil protection. This study reports on GPS-altimetry magnetic, gravity, geoelectric, seismic, and soil gas measurements of a rapidly developing sinkhole near the Guidonia military airport. The measurements revealed an elliptical 2-m depression elongated 220 m in the NNE-SSW direction with the minor axis of 110 m. In spring of 2013, two vertical cavities formed in the eastern and northeastern flanks of the depression whose depths and shapes are rapidly evolving with the formation of widespread fracturing along the same side. The geophysical observations image the developing sinkhole to a depth of some 50 m, the presence of the Travertino lithotype around the depression (down to at least 40 m), and the lack of this lithotype below the lowered area. The sinkhole's evolution appears to be structurally controlled by local and regional faulting. These results are useful for designing further geophysical, geotechnical and geochemical studies to monitor the sinkhole's evolution and to assess the hazard it presents in densely urbanized area.
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