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Assessing the effects of land-use changes on landslide susceptibility: a case study in the upper Rivo basin (Molise, Italy)
Full text linkLandslides are the results of the complex spatial-temporal interaction of various predisposing and triggering factors,
among which land-use is one of the most important. Especially in the short term perspective, whilst geological and
geomorphological factors change in relatively long periods, land-use can evolve in few decades, which explains
why variations in the land use may determine significant changes in the landslide frequency and distribution, even
in a short time span.
In this study, have been analyzed land use changes occurred during the second part of the last century in order
to get some hints about their likely influence on activity, dimensions and distribution of landslide-prone areas in
small sized rural catchments. The selected study area is the upper sector of the Rivo basin, located in Molise
region (Italy). The main goal of this study is to understand the effects of land use changes resulting from land
management activities on landslide susceptibility. In the study area, major socio-economical transformations have
been identified during the period 1954-2003, regarding both land management and land-use pattern.
To this aim, multi-temporal land-use and landslide inventory maps have been compiled for the considered period,
by means of air photo interpretation. Then, using the obtained data sets, different landslide susceptibility maps
have been developed in order to quantify the changes in land use and evaluate their effects on landslide proneness.
The analysis of the most recent aerial photos reveals a decrease in the landslides occurrence, but, at the same time,
an increase in the landslide extinction rate. The preliminary results show that the increase in forested areas, due
to the corresponding decrease in pasture and bushes, determines changes in the stability of the slopes, and the
development of smaller-size areas with high susceptibility to landslides.
These outcomes represent an important step towards the better understanding of the past trend of the study area
in terms of land-use changes, providing a first assessment of the quality of the land-management actions in the
analyzed period. Finally, the observation of the past changes can be a useful input for further studies in order to
investigate the possible future development of land-use and likely consequences on slope stability in rural areas,
and the related landslide susceptibility in a near-future perspective
Morfologie costiere e depositi quaternari tra Agropoli e Ogliastro Marina (Cilento - Italia Meridionale)
No full textMorfologie costiere e depositi quaternari tra Agropoli e Ogliastro Marina (Cilento - Italia Meridionale)
No full textMorfologie costiere e depositi quaternari tra Agropoli e Ogliastro marina (Cilento - Italia meridionale)
No full textPalaeo-landscape reconstruction and assessment of long-term erosion rates through DEM analysis: preliminary results from the Molise Apennine (Central-Southern Italy)
No full text
Morfologie costiere e depositi quaternari fra Ogliastro e Agropoli (Cilento, Italia meridionale).
No full text
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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