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| Titel |
Comparison of event landslide inventories: the Pogliaschina catchment test case, Italy |
| VerfasserIn |
A. C. Mondini, A. Viero, M. Cavalli, L. Marchi, G. Herrera, F. Guzzetti |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Sciences ; 14, no. 7 ; Nr. 14, no. 7 (2014-07-15), S.1749-1759 |
| Datensatznummer |
250118541
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| Publikation (Nr.) |
 copernicus.org/nhess-14-1749-2014.pdf |
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| Zusammenfassung |
| Event landslide inventory maps document the extent of populations of
landslides caused by a single natural trigger, such as an earthquake, an
intense rainfall event, or a rapid snowmelt event. Event inventory maps are
important for landslide susceptibility and hazard modelling, and prove useful
to manage residual risk after a landslide-triggering event. Standards for the
preparation of event landslide inventory maps are lacking. Traditional
methods are based on the visual interpretation of stereoscopic aerial
photography, aided by field surveys. New and emerging techniques exploit
remotely sensed data and semi-automatic algorithms. We describe the
production and comparison of two independent event inventories prepared for
the Pogliaschina catchment, Liguria, Northwest Italy. The two inventories show
landslides triggered by an intense rainfall event on 25 October 2011, and
were prepared through the visual interpretation of digital aerial photographs
taken 3 days and 33 days after the event, and by processing a
very-high-resolution image taken by the WorldView-2 satellite 4 days after
the event. We compare the two inventories qualitatively and quantitatively
using established and new metrics, and we discuss reasons for the differences
between the two landslide maps. We expect that the results of our work can
help in deciding on the most appropriate method to prepare reliable event
inventory maps, and outline the advantages and the limitations of the
different approaches. |
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