http://www.cnr.it/ontology/cnr/individuo/prodotto/ID118650
Relationships between mass movements and tectonic uplift in the upper Sinni River valley, Calabria-Lucania border, Southern Italy. (Abstract in rivista)
- Type
- Label
- Relationships between mass movements and tectonic uplift in the upper Sinni River valley, Calabria-Lucania border, Southern Italy. (Abstract in rivista) (literal)
- Anno
- 2011-01-01T00:00:00+01:00 (literal)
- Alternative label
Michele Santangelo (1,2), Dario Gioia (3), Federica Fiorucci (1,2), Mauro Cardinali (1), Fausto Guzzetti (1), and
Marcello Schiattarella (3) (2011)
Relationships between mass movements and tectonic uplift in the upper Sinni River valley, Calabria-Lucania border, Southern Italy.
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Michele Santangelo (1,2), Dario Gioia (3), Federica Fiorucci (1,2), Mauro Cardinali (1), Fausto Guzzetti (1), and
Marcello Schiattarella (3) (literal)
- Pagina inizio
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- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
- Geophysical Research Abstracts, Vol. 13, EGU2011-11674, EGU General Assembly 2011, Vienna, Austria, 3 8 April 2011, (Abstract, Poster). (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- (1) CNR-IRPI, Perugia, Italy (michele.santangelo@irpi.cnr.it), (2) Università degli Studi di Perugia, Piazza dell'Università 1,
06123 Perugia, Italy, (3) Università degli studi della Basilicata, Via dell'Ateneo Lucano 10, 85100 Potenza, Italy (literal)
- Titolo
- Relationships between mass movements and tectonic uplift in the upper Sinni River valley, Calabria-Lucania border, Southern Italy. (literal)
- Abstract
- Relationships between drainage network and landslides distribution have been investigated by classical and quantitative
geomorphological analysis in an intramontane valley (i.e. the upper valley of the Sinni River) of the southern
Italian Apennines in order to assess the influence of fluvial erosion on mass movements processes. The 70 km2-
wide test-area is mainly characterized by crystalline-metamorphic rocks affected by very low grade metamorphism
and underwent high uplift rates during Quaternary times. We recognized and mapped 537 landslides through the
stereoscopic interpretation of one set of about 20 panchromatic aerial photographs 1:33000 scale. Landslides were
classified according to both type of movement and relative age. Relative age of landslides was determined according
to morphologic appearance (freshness) of the slope failures and also using cross-cut geomorphological
relationships. We recognized 3 classes of landslides called: (i) \"very old\" (possible first-failure landslides), showing
to be mostly linked to a different climatic and gemorphological setting than the present one; (ii) \"old\", slope
failures not so fresh but neither obliterated by fluvial erosion or by subsequent mass movements; these mass movements
developed mostly in slopes already affected by large, deep seated and very old landslides; (iii) \"recent\",
landslides occurred not so far with respect to the age of the aerial photographs (1991), or mapped through a field
reconnaissance survey made in March-April 2009. Generally, these landslides are shallow and triggered by intense
and prolonged rainfall. We detected and mapped 37 new landslides after a long rainfall period during the
winter 2008-2009. In order to evaluate the role of the fluvial processes on landslides distribution, a quantitative
geomorphological analysis of the drainage network has been performed. In particular, the degree of planimetric
organization of the fluvial network has been evaluated by the analysis of several morphometric indices, which
assume high values in area strongly perturbed by tectonics and/or mass wasting processes. We argued that the
medium-high hierarchical anomaly density values can be mostly due to the presence of landslides disturbing the
regular development of the fluvial network. Moreover, denudation rates related to recent/active geomorphological
system have been obtained by estimating the amount of suspended sediment yield of channels on the grounds of
empirical relationships based on the hierarchic arrangement of the fluvial network. In the study area, denudation
rates are settled on value of about 0,2 mm/y, whereas the Quaternary uplift rates are between 0.93 - 1.57 mm/y.
We argue that the high uplift rate of recent times is a disturbing element within the recent morphogenesis. On the
basis of the discussed data, large mass movements in the study area are mainly triggered by Quaternary tectonics,
with litho-structural and morpho-climatic factors that assumed a minor role. (literal)
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