Journal ArticleDOI
Objective delineation of lahar-inundation hazard zones
TLDR
In this paper, a new method of delineating lahar hazard zones in valleys that head on volcano flanks is proposed, which provides a rapid, objective, reproducible alternative to traditional methods.Abstract:
A new method of delineating lahar hazard zones in valleys that head on volcano flanks provides a rapid, objective, reproducible alternative to traditional methods. The rationale for the method derives from scaling analyses of generic lahar paths and statistical analyses of 27 lahar paths documented at nine volcanoes. Together these analyses yield semiempirical equations that predict inundated valley cross-sectional areas (A) and planimetric areas (B) as functions of lahar volume (V). The predictive equations (A = 0.05V 2/3 and B = 200V 2/3 ) provide all information necessary to calculate and plot inread more
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Journal ArticleDOI
Recommendations for the quantitative analysis of landslide risk
Jordi Corominas,C.J. van Westen,Paolo Frattini,Leonardo Cascini,Jean-Philippe Malet,Stavroula Fotopoulou,Filippo Catani,M. van den Eeckhaut,Olga Mavrouli,Federico Agliardi,Kyriazis Pitilakis,Mike G. Winter,Manuel Pastor,Settimio Ferlisi,Veronica Tofani,Javier Hervás,J.T. Smith +16 more
TL;DR: In this article, the authors present recommended methodologies for the quantitative analysis of landslide hazard, vulnerability and risk at different spatial scales (site-specific, local, regional and national), as well as for the verification and validation of the results.
Journal ArticleDOI
The mobility of long-runout landslides
TL;DR: In this article, it was shown that the apparent coefficient of friction (ratio of the fall height to the runout distance) commonly used to describe landslide mobility is physically meaningless.
Book
Landslides: Processes, Prediction, and Land Use
Roy C. Sidle,Hirotaka Ochiai +1 more
TL;DR: In this paper, the authors chart the understanding of landslide processes, prediction methods, and related land use issues, including land use, from timber harvesting and road building to urban and industrial development, and the effect of land use and climate change on landslides.
Journal ArticleDOI
Forecasting volcanic eruptions
TL;DR: In the field of volcanology, the ability to forecast is being advanced by new technology, such as broadband seismology, satellite observations of ground deformation and improved field spectrometers for volcanic gas studies, leading to improvements in data transmission, data analysis and modelling techniques.
Journal ArticleDOI
Dynamic modelling of entrainment in rapid landslides
Scott McDougall,Oldrich Hungr +1 more
TL;DR: In this paper, the authors describe the entrainment of path material is an important feature of many rapid landslides and the associated increases in volume and changes in flow character can significantly influence mobility.
References
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Journal ArticleDOI
The physics of debris flows
TL;DR: In this paper, a simple model that satisfies most of these criteria uses depth-averaged equations of motion patterned after those of the Savage-Hutter theory for gravity-driven flow of dry granular masses but generalized to include the effects of viscous pore fluid with varying pressure.
Journal Article
Extracting topographic structure from digital elevation data for geographic information-system analysis
TL;DR: In this paper, software tools have been developed at the U.S. Geological Survey's EROS Data Center to extract topographic structure and to delineate watersheds and overland flow paths from digital elevation models.
Book
Open channel flow
TL;DR: The importance of basic principles is recognized in this article in two ways : first, by devoting the opening chapters to a fairly leisurely discussion of introductory principles, including a recapitulation of the underlying arguments derived from the parent subject of fluid mechanics; and second, by takingnevery opportunity in the later chapters to refer back to this earlier material in order to clarify particular applications as they arise.
Journal ArticleDOI
The motion of a finite mass of granular material down a rough incline
Stuart B. Savage,Kolumban Hutter +1 more
TL;DR: In this article, two similarity solutions are found for the motion of a finite mass of material released from rest on a rough inclined plane, and the linear stability of the similarity solutions is studied.