Open AccessErosión por cárcavas y barrancos en el área de viña del Alt Penedès-Anoia (NE España)
Author(s) -
José A. MartínezCasasnovas,
M. C. Ramos
Publication year - 2013
Publication title -
cuadernos de investigación geográfica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.537
H-Index - 20
eISSN - 1697-9540
pISSN - 0211-6820
DOI - 10.18172/cig.1220
Subject(s) - erosion , outcrop , geology , hydrology (agriculture) , gully erosion , aerial photos , geomorphology , remote sensing , geotechnical engineering
The present research analyzes gully erosion processes in an area of the Alt Penedès and Anoia regions (Barcelona) at semi-detailed and detailed scales. For that, information technology methods (Geographic Information Systems and Remote Sensing) are developed and applied. The study area is located in the Vallès-Penedès Depression, where unconsolidated continental and marine Miocene deposits outcrop with a dense and deep gully network. The methods have allowed the location of gully erosion at regional scale and the determination of gully erosion rates in a sample area. The results reveal the importance of gully erosion, usually less studied than other erosion processes. The 15.2% of the region has been affected by gullies, with landscape units where the dissection reaches 31.9%. Gullies are active at present, with annual average rates of 576 ± 58 Mg ha-1 year-1, which indicates the importance of gully erosion processes in the production of sediments in the study area.