RT journal article
T1 Automatic mapping subsidence caused by changes in the water table using remote sensing on the Island of Tenerife (Spain)
A1 Barbero Guerrero, Ignacio
A1 Torrecillas Lozano, Cristina
A1 Páez Jiménez, Raúl
A2 Estadística e Investigación Operativa
K1 Subsidence
K1 ENVISAT
K1 DInSAR
K1 Getis-Ord G_i^*
K1 Spatial statistic
AB The satellite Differential Interferometry Synthetic Aperture Radar provides subcentimetre-precision ground displacement in line of sight in large areas with thousands of points. The correct identification of small spatial phenomena is not easy amongst so much data. This paper deals with the application of the Getis-Ord Gi* statistic to the calculated vertical velocities for automatic subsidence mapping on the island of Tenerife between 2004 and 2010. By clustering values of high statistical significance (<0.01), amongst 55,225 calculated velocity points, previously identified cases of subsidence have been delimited in the northwest (Chio and Guimar). Other unexplored, more local sites with similar sink rates, were also detected to the east (El Rosario, -14mm/year) and west (Guía de Isora and Adeje, between -8mm/year and -20mm/year). Most of them are in small areas associated with groundwater extraction constructions and local agriculture where the water table had decreased drastically in previous years.
PB Publicaciones DYNA
SN 0012-7361
YR 2022
FD 2022
LK http://hdl.handle.net/10498/29912
UL http://hdl.handle.net/10498/29912
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 11-nov-2026