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| Titel |
A method for multi-hazard mapping in poorly known volcanic areas: an example from Kanlaon (Philippines) |
| VerfasserIn |
M. Neri, G. Cozannet, P. Thierry, C. Bignami, J. Ruch |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 13, no. 8 ; Nr. 13, no. 8 (2013-08-01), S.1929-1943 |
| Datensatznummer |
250018586
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| Publikation (Nr.) |
 copernicus.org/nhess-13-1929-2013.pdf |
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| Zusammenfassung |
| Hazard mapping in poorly known volcanic areas is complex since much evidence
of volcanic and non-volcanic hazards is often hidden by vegetation and
alteration. In this paper, we propose a semi-quantitative method based on
hazard event tree and multi-hazard map constructions developed in the frame
of the FP7 MIAVITA project. We applied this method to the Kanlaon volcano
(Philippines), which is characterized by poor geologic and historical
records. We combine updated geological (long-term) and historical
(short-term) data, building an event tree for the main types of hazardous
events at Kanlaon and their potential frequencies. We then propose an updated
multi-hazard map for Kanlaon, which may serve as a working base map in the case
of future unrest. The obtained results extend the information already
contained in previous volcanic hazard maps of Kanlaon, highlighting (i) an
extensive, potentially active ~5 km long summit area striking
north–south, (ii) new morphological features on the eastern flank of the
volcano, prone to receiving volcanic products expanding from the summit, and
(iii) important riverbeds that may potentially accumulate devastating
mudflows. This preliminary study constitutes a basis that may help local
civil defence authorities in making more informed land use planning decisions and in
anticipating future risk/hazards at Kanlaon. This multi-hazard mapping method
may also be applied to other poorly known active volcanoes. |
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