CliFEM - Climate Forcing and Erosion Modelling in the Sele River Basin (Southern Italy)

Abstract. This study presents a revised and scale-adapted Foster-Meyer-Onstad model (Foster et al., 1977) for the transport of soil erosion sediments under scarce input data, with the acronym CliFEM (Climate Forcing and Erosion Modelling). This new idea was addressed to develop a monthly time scale invariant Net Erosion model (NER), with the aim to consider the different erosion processes operating at different time scales in the Sele River Basin (South Italy), during 1973–2007 period. The sediment delivery ratio approach was applied to obtain an indirect estimate of the gross erosion too. The examined period was affected by a changeable weather regime, where extreme events may have contributed to exacerbate soil losses, although only the 19% of eroded sediment was delivered at outlet of the basin. The long-term average soil erosion was very high (73 Mg ha−1 per year ± 58 Mg ha−1). The estimate of monthly erosion showed catastrophic soil losses during the soil tillage season (August–October), with consequent land degradation of the hilly areas of the Sele River Basin

Superscaling and Charge-changing Neutrino Cross Sections

The superscaling function extracted from inclusive electron scattering data is used to predict high energy charge-changing neutrino cross sections in the quasi-elastic and $\Delta$ regions.Comment: 3 pages, 2 figures, to appear in the Proceedings of the 7th International Workshop on Neutrino Factories and Superbeams, Laboratori Nazionali di Frascati, Frascati (Rome), June 21 - 26, 200

Sol : attention fragile ! Les enjeux sociétaux liés à la consommation des sols

Cet article restitue une partie des résultats du projet OSDDT « Occupation des Sols et Développement Durable du Territoire » financé dans le cadre du programme MED. Le projet se place dans la droite ligne de la proposition de Directive du Parlement Européen et du Conseil de 2006, qui souligne que : « le sol est une ressource d’intérêt général pour la communauté, bien qu’il relève pour l’essentiel de la propriété privée, et sa non protection nuit au développement durable et à long terme, à la compétitivité de l’Europe. » Il a permis la mise au point d’un modèle de suivi et d’évaluation de l’utilisation des sols, construit sur des critères d’approches communs aux partenaires européens de l’arc méditerranéen. Ce modèle a l’ambition d’augmenter la capacité des acteurs publics qui gèrent les différents instruments de planification du territoire et ont contribué au cours des 20 dernières années à une consommation très dispendieuse, de repenser leurs modes de gestion dans une optique de développement durable et de sauvegarde des sols naturels

Soil: fragile ! Be careful ! The challenges to society from its over-consumption of land

Cet article restitue une partie des résultats du projet OSDDT « Occupation des Sols et Développement Durable du Territoire » financé dans le cadre du programme MED. Le projet se place dans la droite ligne de la proposition de Directive du Parlement Européen et du Conseil de 2006, qui souligne que : « le sol est une ressource d’intérêt général pour la communauté, bien qu’il relève pour l’essentiel de la propriété privée, et sa non protection nuit au développement durable et à long terme, à la compétitivité de l’Europe. » Il a permis la mise au point d’un modèle de suivi et d’évaluation de l’utilisation des sols, construit sur des critères d’approches communs aux partenaires européens de l’arc méditerranéen. Ce modèle a l’ambition d’augmenter la capacité des acteurs publics qui gèrent les différents instruments de planification du territoire et ont contribué au cours des 20 dernières années à une consommation très dispendieuse, de repenser leurs modes de gestion dans une optique de développement durable et de sauvegarde des sols naturels

Limits on \boldmath n {\bar n} oscillations from nuclear stability

The relationship between the lower limit on the nuclear stability lifetime as derived from the non disappearance of `stable` nuclei ($T_{d}~\gtrsim~5.4~\times~10^{31}$ yr), and the lower limit thus implied on the oscillation time $(\tau_{n \bar n})$ of a possibly underlying neutron-antineutron oscillation process, is clarified by studying the time evolution of the nuclear decay within a simple model which respects unitarity. The order-of-magnitude result $\tau_{n \bar n} \approx 2 (T_{d}/\Gamma_{\bar n})^{1/2} > 2 \times 10^{8}$ sec, where $\Gamma_{\bar n}$ is a typical $\bar n$ nuclear annihilation width, agrees as expected with the limit on $\tau_{n \bar n}$ established by several detailed nuclear physics calculations, but sharply disagreeing by 15 orders of magnitude with a claim published recently in Phys. Rev. CRAP.Comment: 8 pages; this PRC version (accepted for publication, November 4 1999) differs from the original version only by a few minor editorial change

The effects of nonextensive statistics on fluctuations investigated in event-by-event analysis of data

We investigate the effect of nonextensive statistics as applied to the chemical fluctuations in high-energy nuclear collisions discussed recently using the event-by-event analysis of data. It turns out that very minuite nonextensitivity changes drastically the expected experimental output for the fluctuation measure. This results is in agreement with similar studies of nonextensity performed recently for the transverse momentum fluctuations in the same reactions.Comment: Revised version, to be published in J. Phys. G (2000

The composite dataset of the present-day Infralittoral Prograding Wedges (IPWs) in the inner continental shelf of the Campania region (Central-Eastern Tyrrhenian Sea)

This article reports on the dataset gathered following the census of 83 present-day Infralittoral Prograding Wedges (IPWs), surveyed on the inner continental shelf of the Central-Eastern Tyrrhenian Sea. The purpose of the census was to explore their bathymetric range and assess the observational laws governing this variability. The ensued dataset (Campania Region IPW Dataset, CRID) includes geographic, topographic and morpho-bathymetric indices, descriptive of each IPW and more, the exposure of each IPW to wave forcing (Geographical fetch, Effective fetch and extreme significant wave height, HS). In this work, histograms contribute to describe all the variables and highlight the dominant features of each IPW. Location maps univocally links the geographic position of each IPW to the appropriate attribute record in the dataset. Further, thematic maps illustrate eight wave fields obtained by offshore-to-nearshore transformation by as many sea states scenarios with 200-year return period. Such wave fields are used as sources for significant wave height representing wave conditions over each IPW. This dataset could be implemented with new measures at a broader scale, by following analogue procedures for measurements, to enlarge the observational scale on IPWs and improve the numerical models which might eventually derive by the analysis of this dataset

Measuring non-extensitivity parameters in a turbulent Couette-Taylor flow

We investigate probability density functions of velocity differences at different distances r measured in a Couette-Taylor flow for a range of Reynolds numbers Re. There is good agreement with the predictions of a theoretical model based on non-extensive statistical mechanics (where the entropies are non-additive for independent subsystems). We extract the scale-dependent non-extensitivity parameter q(r, Re) from the laboratory data.Comment: 8 pages, 5 figure