Ground deformation monitoring at Mt Etna; evidence for dyke emplacement and slope instability
- 16 May 1991
- journal article
- Published by Geological Society of London in Journal of the Geological Society
- Vol. 148 (3) , 577-583
- https://doi.org/10.1144/gsjgs.148.3.0577
Abstract
Ground deformation monitoring at Mount Etna has successfully enabled the sub-surface paths of two shallow feeder-dykes to be traced, and their dimensional parameters, depths and departures from the vertical, to be constrained. Determinations of horizontal movement have recorded the displacement, by 3.6 m (maximum), of a rim segment of the Valle del Bove flank caldera, due to dilation associated with dyke emplacement adjacent to the rim over the period 1981 to 1989. Small-scale collapse along this rim segment, associated with the opening of the 1989 fissure, points to increasing slope instability, and highlights the potential for major failure and debris avalanche generation.Keywords
This publication has 18 references indexed in Scilit:
- Large volcanic debris avalanches: Characteristics of source areas, deposits, and associated eruptionsPublished by Elsevier ,2003
- Surface deformation in volcanic rift zonesPublished by Elsevier ,2003
- The Valle del Bove, Mount Etna: Its origin and relation to the stratigraphy and structure of the volcano — DiscussionPublished by Elsevier ,2003
- Location and orientation of eruptive fissures and feederdykes at Mount Etna; influence of gravitational and regional tectonic stress regimesJournal of Volcanology and Geothermal Research, 1989
- Characterization of debris avalanche deposits in JapanJournal of Volcanology and Geothermal Research, 1986
- Three-dimensional model of the feeder conduit of the 1983 eruption of Mt. Etna volcano, from ground deformation measurementsBulletin of Volcanology, 1984
- Large ground deformation on Mount Etna volcanoNature, 1977
- Mount Etna and the 1971 eruption - Structure and evolution of Mount EtnaPhilosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1973
- Inflation of Kilauea Volcano Prior to Its 1967-1968 EruptionScience, 1969
- XXXII. On the structure of lavas which have consolidated on steep slopes; with remarks on the mode of origin of Mount Etna, and on the theory of "craters of elevation."Philosophical Transactions of the Royal Society of London, 1858