Prediction of rainfall-triggered landslides : a test of the antecedent water status model
A rainfall-based landslide-triggering model, developed from previous landslide episodes in Wellington City, New Zealand is tested for its ability to provide a 24-hour forecast of lanslide occurrence. Together with the daily rainfall input, the soil
water status has been used empirically to identify a threshold condition for landslide triggering. The model produces a satisfactory level of prediction, particularly for periods of concentrated landslide activity.
During the 2003 Sanriku-Minami earthquake, Japan, a flowside was triggered on a slope of about 13.5°. To study the trigger and movement mechanisms of this landslide, field investigation and laboratory ring-shear tests were performed. Field
and partially drained shear tests was performed on samples taken from the landslide source area. Based on the test results, the triggering and movement mechanisms were examined and are discussed herein.
A view on some hydrological triggering systems in landslides
In this paper different types of hydrological triggering systems for debris flows, shallow and deeper landslides are described. The generation of surface run-off and high peak discharges in first order alpine catchments is an important triggering
mechanism for debris flows. The assessment of meteorological threshold conditions for shallow landslides needs more detailed meteorological information than for deeper landslides. In the analyses of the hydrological triggering systems of deeper landslides
Atmospheric triggering and geomorphic significance of fluvial events in high-latitude regions
summer. Based on the discussion on general aspects of magnitude-frequency relations, atmospheric triggering and resulting hydrologic and geomorphic events in periglacial environments are analyzed with special focus on drainage basins in NW-Spitsbergen
Distribution and morphology of sinkholes triggered by flooding following tropical storm Alberto at Albany, Georgia
Flooding of the Flint River in July 1994 triggered the collapse of at least 312 sinkholes in the karstic Dougherty Plain at Albany, Georgia. The AA. examined the distribution and morphology of these new sinkholes to evaluate the mode of formation
The role of conditioning and triggering factors in the occurrence of landslides : a case study in the area north of Lisbon (Portugal)
The aim of this paper is to ascertain precisely the roles played both by permanent conditions (geological structure, geomorphological setting, angles of slope) and triggering factors (anthropogenic interference, rainfall) in the occurrence
Catastrophic precipitation-triggered lahar at Casita volcano, Nicaragua : occurrence, bulking and transformation
A catastrophic lahar began on 30 October 1998, as hurricane precipitation triggered a small flank collapse of Casita volcano, a complex and probably dormant stratovolcano. This emphasizes the need, in volcano hazard assessments, for including
Fifty active-layer detachment failures triggered after forest fire in the discontinuous permafrost zone (central Mackenzie Valley) are compared to several hundred others caused by summer meteorological triggers in continuous permafrost (Fosheim
recession and thermokarst development within the failure track) differed between the localities, reflecting dissimilarity in the environmental triggers and in the degree of ground thermal disturbance.
The region is constantly adjusting in part or in whole to a spectrum of geomorphic events including : sea-level change, tectonic uplift, aeolian deposition, large landslide-triggering earthquakes, deforestation and landslide-triggering rainstorms
This bed-level adjustment analysis identified the existence of 2 main phases of lowering : the first, triggered at the end of the past century; the second, triggered in the interval 1945-1960 and characterized by more intense degradation