The Michoacán-Guanajuato volcanic field contains over 1400 vents, the most recently active of which was Parícutin, which grew from a farmer’s field from 1943-1952. Two separate ALOS surveys of Mexican volcanoes observed continued subsidence of lava flows at the base of Parícutin (Fournier et al., 2010 and Chaussard et al., 2013).
Both studies observe a maximum subsidence rate of 4-4.5 cm/year on lava flows with an average thickness of 70 m. The subsidence is believed to be due to thermal contraction and compaction of lava flow deposits from the 1943-1952 eruption, and the maximum subsidence is thought to occur where the deposit thickness is greatest (Fournier et al., 2010).