Pietrogrande S., Mandarino A., Azzoni R.S., Forti L., Faccini F., Pelfini M., Brandolini P., Geomorphological mapping and anthropogenic signature along the rocky coast in the Tigullio Gulf (Eastern Liguria, Italy). (IT ISSN 0391-9838, 2025). This paper describes the geomorphology of the coastal stretch between Zoagli and Chiavari, and presents the annexed geomorphological map at the scale of 1:5000. The study area, a dramatic rocky coast facing the Ligurian Sea, has been severely impacted by anthropogenic morphogenesis. It is historically prone to landslides and characterized by (i) a geological setting markedly conditioning the geomorphological evolution, (ii) small valley bottoms that have been entirely artificialized, (iii) hillslopes almost completely terraced, and (iv) a hydrographic network that is largely modified by channelization and culverting. Unlike many other areas worldwide where agricultural terraces have been abandoned over the past century, in this sector they have partially preserved their agricultural function and have been partially transformed by urban expansion, especially during the 1960s-1970s. Urbanization involved the construction of large settlements and scattered buildings associated with residential and tourism infrastructure, in some cases extending up to or beyond the sea cliff edge. This landscape setting, combined with high relief energy and the ubiquitous presence of infrastructure and facilities, makes the area highly exposed to geo-hydrological hazards such as mass movements, flash floods, and storm surges. The geomorphological map was produced through collection and review of archival data, geomorphological field surveys and indirect survey techniques based on the photointerpretation of aerial photographs, orthophotos, and satellite images, and the analysis of digital elevation models, all managed in a GIS environment. The outcomes of this research provide further insights to enhance both public awareness of geomorphological processes and risk perception, and represent a solid base for sustainable land management and adaption planning.
Geomorphological mapping and anthropogenic signature along the rocky coast in the Tigullio Gulf (Eastern Liguria, Italy)|Cartografia geomorfologica e tracce dell’impronta antropica lungo la costa rocciosa del Golfo del Tigullio (Liguria orientale, Italia)
Pietrogrande S.;Mandarino A.;Faccini F.;Brandolini P.
2025-01-01
Abstract
Pietrogrande S., Mandarino A., Azzoni R.S., Forti L., Faccini F., Pelfini M., Brandolini P., Geomorphological mapping and anthropogenic signature along the rocky coast in the Tigullio Gulf (Eastern Liguria, Italy). (IT ISSN 0391-9838, 2025). This paper describes the geomorphology of the coastal stretch between Zoagli and Chiavari, and presents the annexed geomorphological map at the scale of 1:5000. The study area, a dramatic rocky coast facing the Ligurian Sea, has been severely impacted by anthropogenic morphogenesis. It is historically prone to landslides and characterized by (i) a geological setting markedly conditioning the geomorphological evolution, (ii) small valley bottoms that have been entirely artificialized, (iii) hillslopes almost completely terraced, and (iv) a hydrographic network that is largely modified by channelization and culverting. Unlike many other areas worldwide where agricultural terraces have been abandoned over the past century, in this sector they have partially preserved their agricultural function and have been partially transformed by urban expansion, especially during the 1960s-1970s. Urbanization involved the construction of large settlements and scattered buildings associated with residential and tourism infrastructure, in some cases extending up to or beyond the sea cliff edge. This landscape setting, combined with high relief energy and the ubiquitous presence of infrastructure and facilities, makes the area highly exposed to geo-hydrological hazards such as mass movements, flash floods, and storm surges. The geomorphological map was produced through collection and review of archival data, geomorphological field surveys and indirect survey techniques based on the photointerpretation of aerial photographs, orthophotos, and satellite images, and the analysis of digital elevation models, all managed in a GIS environment. The outcomes of this research provide further insights to enhance both public awareness of geomorphological processes and risk perception, and represent a solid base for sustainable land management and adaption planning.
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