http://www.cnr.it/ontology/cnr/individuo/prodotto/ID273171
Interplay between mass movement and fluvial network organization: An example from southern Apennines, Italy (Articolo in rivista)
- Type
- Label
- Interplay between mass movement and fluvial network organization: An example from southern Apennines, Italy (Articolo in rivista) (literal)
- Anno
- 2013-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1016/j.geomorph.2012.12.008 (literal)
- Alternative label
Michele Santangelo (1,2), Dario Gioia (3), Mauro Cardinali (1), Fausto Guzzetti (1), Marcello Schiattarella (4) (2013)
Interplay between mass movement and fluvial network organization: An example from southern Apennines, Italy
in Geomorphology (Amst.)
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Michele Santangelo (1,2), Dario Gioia (3), Mauro Cardinali (1), Fausto Guzzetti (1), Marcello Schiattarella (4) (literal)
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- (1) CNR-IRPI, via Madonna Alta 126, I-06128 Perugia, Italy.
(2) Dipartimento di Scienze della Terra, Università degli Studi di Perugia, Piazza dell'Università, I-06123 Perugia, Italy.
(3) CNR-IBAM, C.da S. Loja, I-85050 Tito Scalo (PZ), Italy.
(4) Dipartimento di Scienze, Università degli Studi della Basilicata, Via dell'ateneo lucano, I-85100 Potenza, Italy. (literal)
- Titolo
- Interplay between mass movement and fluvial network organization: An example from southern Apennines, Italy (literal)
- Abstract
- Relationships between landslides and drainage network arrangement have been investigated by classical and
quantitative geomorphological analysis in an intermountain valley (i.e. the upper valley of the Sinni River) of
the southern Italian Apennines. The 120 km 2-wide test-area is characterized by very low grade metamorphic
rocks (mainly shale) and associated crystalline-metamorphic rocks which underwent high exhumation and
uplift rates during Quaternary times. We recognized and mapped 534 landslides through the stereoscopic in-
terpretation of one set of 20 panchromatic aerial photographs 1:33,000 scale. Landslides were classified
according to both type of movement and relative age. We detected and mapped 35 new landslides after a
long rainfall period during the winter 2008-2009. The percentage of area affected by landslides (DL) of the
area has a high value (about 37%). Analysis of distribution of landslides areas within different age classes sug-
gests that recent/present-day landslide distribution is strongly influenced by the legacy of widespread large
and ancient landslides, probably generated within a different morpho-climatic setting. A quantitative geo-
morphological analysis of the drainage network has been performed to evaluate the influence of landslide
processes on morphometric properties of the drainage network. In particular, the degree of hierarchical orga-
nization of the drainage network is assessed through the hierarchical anomaly density, a measure of the
number of anomalous confluences (i.e. channels of u order not flowing in channels of order u + 1) in drainage
basins. On the basis of statistical relationships between morphometric indices of the drainage network and
DL, we argue that the activity of more recent mass movements rather than very old landslides can act as a
disturbing element within the development of the drainage network, generating anomalous confluences of
the 1st order. Empirical relationships between suspended sediment yield and some geomorphic parameters
of the drainage network allowed the estimation of short-term denudation rates in the study area. The com-
parison between uplift and denudation rates suggests that the landscape system has not reached a steady
state between uplift and erosion, in which tectonic uplift can represent a disturbing element within the re-
cent morphogenesis. On the basis of the data presented, (large) mass movements in the study area are mainly
linked to the relief growth promoted by Quaternary tectonics, whereas litho-structural and morpho-climatic
factors assume a minor role. (literal)
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