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| Titel |
Mass movements in the Rio Grande Valley (Quebrada de Humahuaca, Northwestern Argentina): a methodological approach to reduce the risk |
| VerfasserIn |
G. Marcato, A. Pasuto, F. R. Rivelli |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7340
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| Digitales Dokument |
URL |
| Erschienen |
In: 4th EGU Alexander von Humboldt Conference "The Andes: Challenge for Geosciences" ; Nr. 22 (2009-10-13), S.59-65 |
| Datensatznummer |
250014729
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| Publikation (Nr.) |
 copernicus.org/adgeo-22-59-2009.pdf |
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| Zusammenfassung |
Slope processes such as slides and debris flows, are
among the main events that induce effects on the Rio Grande sediment
transport capacity. The slides mainly affect the slope of the Rio Grande
river basin while debris and mud flows phenomena take place in the tributary
valleys. In the past decades several mass movements occurred causing victims
and great damages to roads and villages and therefore hazard assessment and
risk mitigation is of paramount importance for a correct development of the
area. This is also an urgent need since the Quebrada de Humahuaca was
recently included in the UNESCO World Cultural Heritage. The growing tourism
business may lead to an uncontrolled urbanization of the valley with the
consequent enlargement of threatened areas.
In this framework mitigation measures have to take into account not only
technical aspects related to the physical behaviour of the moving masses but
also environmental and sociological factors that could influence the
effectiveness of the countermeasures.
Mitigation of landslide effects is indeed rather complex because of the
large extension of the territory and the particular geological and
geomorphological setting. Moreover the necessity to maintain the natural
condition of the area as prescribed by UNESCO, make this task even more
difficult.
Nowadays no in-depth study of the entire area exists, therefore an
integrated and multidisciplinary investigation plan is going to be set up
including geological and geomorphological investigations as well as
archaeological and historical surveys. The better understanding of
geomorphological evolution processes of the Quebrada de Humahuaca will
bridge the gap between the necessity of preservation and the request of
safety keeping of the recommendation by UNESCO. |
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