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2 Landform Analysis

2 2011

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Multi parametric GIS analysis to assess gully erosion susceptibility : a test in southern Sicily, Italy

Agnesi V., Angileri S., Cappadonia C., Conoscenti C., Rotigliano E.

Landform Analysis

2011

Vol. 17

15-20

A GIS+analysis was carried out in a test basin of southern Sicily, the Magazzolo River basin, in order to assess susceptibility conditions to gully erosion phenomena. The linear density of ephemeral and permanent gullies computed within each class of nine environmental variables was used to generate a gully erosion susceptibility map for the area. A validation procedure carried out in order to test the reliability of the adopted method highlighted a clear correlation between the occurrence of gullies and the computed susceptibility levels.

Monitoring of erosion on two calanchi fronts - Northern Sicily (Italy)

Cappadonia C., Conoscenti C., Rotigliano E.

Landform Analysis

2011

Vol. 17

21-25

In the present research, two neighbouring calanchi fronts have been monitored by means of repeated readings on erosion pins, that were carried out between November 2006 and October 2008. During the monitoring period, a gauge station has been recording rainfalls, allowing us to compute the Rainfall-Runoff Erosivity Factor of the USLE model. The research highlighted: i) a general correspondence between rainfalls temporal trends and surface variation rhythms; ii) alternating erosion and deposition phases result in a retreat of the "calanchi" fronts.