The volume and shape of the 1991–1993 lava flow field at Mount Etna, Sicily |
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| Authors: | Nicki F Stevens John B Murray Geoff Wadge |
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| Institution: | (1) Environmental Systems Science Centre, University of Reading, Whiteknights, Reading, RG6 6AB, UK Fax: +44 1734 755 865, GB;(2) Department of Earth Sciences, Open University, Walton Hall, Milton Keynes, MK7 9AA, UK, GB |
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| 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 205×106 m3 (Tanguy 1996) to over 500×106 m3 (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±29×106 m3.
Received: 20 July 1996 / Accepted: 5 November 1996 |
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| Keywords: | 1991 1993 eruption Etna Volume Shape Topographic mapping |
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