The volume and shape of the 1991-1993 lava flow field at Mount Etna, Sicily
Abstract
The 1991-1993 lava flow is the most voluminous flow erupted at Mount Etna, Sicily, in over 300 years. Estimates of the volume obtained by various methods range from 205×106m3 (Tanguy 1996) to over 500×106m3 (Barberi et al. 1993). This paper describes the results of an electronic distance measurement (EDM)-based field survey of the upper surface of the 1991-1993 flow field undertaken in 1995. The results were digitised, interpolated and converted into a digital elevation model and then compared with a pre-eruption digital elevation model, constructed from a 1 : 25 000 contour map of the area, based on 1989 aerial photographs. Our measurements are the most accurate to date and show that the 1991-1993 lava flow occupies a volume of 231+/-29×106m3.
- Publication:
-
Bulletin of Volcanology
- Pub Date:
- 1997
- DOI:
- 10.1007/s004450050153
- Bibcode:
- 1997BVol...58..449S