Search results for "geomorfologia"
showing 10 items of 291 documents
Analysis of Hydrological and Landslide Hazards at Castellammare Del Golfo (Northern Sicily)
2014
Catastrophic floods or mass movements occur all too often owing to small streams overflowing their banks or to slope instabilities whose evolution has a more or less tragic impact on people and property; these events are the consequence of a poor understanding of the dynamics of geomorphological processes and of the laws governing them. This paper is focused on the case study of Castellammare del Golfo, a town in the province of Trapani. The study analysed the geological risk due to the geomorphology of the area and to the urban sprawl that it has experienced in the past decades. Geomorphological processes have a strategic role to play in spatial planning and management instruments and in t…
Investigating the Effects of Cell Size in Statistical Landslide Susceptibility Modelling for Different Landslide Typologies: A Test in Central–Northe…
2023
Optimally sizing grid cells is a relevant research issue in landslide susceptibility evaluation. In fact, the size of the adopted mapping units influences several aspects spanning from statistical (the number of positive/negative cases and prevalence and resolution/precision trade-off) and purely geomorphological (the representativeness of the mapping units and the diagnostic areas) to cartographic (the suitability of the obtained prediction images for the final users) topics. In this paper, the results of landslide susceptibility modelling in a 343 km2 catchment for three different types of landslides (rotational/translational slides, slope flows and local flows) using different pixel-size…
Geomorphological and speleological aspects of the Vallone Ponte-Grotte d'Acqua karst system (Sant'Angelo Muxaro - AG)
2009
Exploring the spatial relationship between airborne-derived red and far-red sun-induced fluorescence and process-based GPP estimates in a forest ecos…
2019
International audience; Terrestrial gross primary productivity (GPP) plays an essential role in the global carbon cycle, but the quantification of the spatial and temporal variations in photosynthesis is still largely uncertain. Our work aimed to investigate the potential of remote sensing to provide new insights into plant photosynthesis at a fine spatial resolution. This goal was achieved by exploiting high-resolution images acquired with the FLuorescence EXplorer (FLEX) airborne demonstrator HyPlant. The sensor was flown over a mixed forest, and the images collected were elaborated to obtain two independent indicators of plant photosynthesis. First, maps of sun-induced chlorophyll fluore…
L'acqua ed il rischio geomorfologico
2008
Geologia e Geomorfologia dell'area.
2008
Elementi di litologia e geomorfologia
2008
La construcció dels paisatges valencians en l'obra de Joan F. Mateu Bellés
2022
L'activitat de Joan Mateu com a geògraf ha comportat una llarga dedicació a l'anàlisi de la construcció de diversos paisatges, alguns dels quals han marcat tant la seua trajectòria vital com la professional, i han esdevingut, tot alhora, àmbits d'aprenentatge i de mestratge. En aquest article ens aproximem als tres espais més significatius en la seua obra i els més indissimuladament valorats en la seua memòria: la Ribera del Xúquer, la Serra d'Espadà i el nord del País Valencià. D'aquesta manera, efectuem una revisió de les seues aportacions a l'anàlisi d'aquests territoris, de les filiacions i mètodes, i en essència fem una aproximació, forçosament parcial, a la seua manera d'entendre la G…
The use of geomorphological units to improve drainage network extraction from DTMs. A case of study in the Carraixet catchment (Valencia, Spain)
1999
Drainage networks are one of the main elements characterizing basins, and network topology and geometry form the basis of many hydrological and geomorphological models (eg Geomorphological Unitary Hydrograph). The identification and manual delineation of channel networks from maps or aerial photographs requires much time and effort. In the last two decades, algorithms and procedures for automated extraction of drainage networks from digital elevation data have been developed and implemented in many specialized software applications. Nevertheless, automatically delineated channel networks do not always show close agreement with manually delineated networks. This paper describes a comparative…