and duration of rainfall. It turns out that the probability of saturated throughflow, which is the direct trigger mechanism to shallow landsliding, can be expressed by a log-normal distribution. The short term probability of landsliding is defined as the excess
probability that the depth of saturated throughflow surpasses the critical value.
Le glacier rocheux du Caquella (5960-5400 m), 1 km de long environ, est probablement le plus volumineux de la zone intertropicale. Dans ce milieu de haute montagne tropicale aride, les glaciers rocheux sont les meilleurs indicateurs du changement
a probablement commencé au début de l'Holocène, et qu'un processus de dégradation est engagé depuis ce siècle.
A prehistoric rockfall, probably caused by an earthquake, blocked Río de las Conchas 2 km upstream from Alemanía (Salta Province, Argentina) in the southern part of the Cordillera Oriental. The rockfall created a dam that formed a lake at least 16
km long. Shells of Biomphalaria, preserved in the lake sediments and, dated by radiocarbon, established the time of this event to be about 5500-6000 years ago. When the natural dam failed, probably either by piping or overtopping, the lake drained
shorelines were probably formed by the Blackwelder stand and subsequently displaced , tectonically, due to transpression in the northeastern Mojave Desert and NW-SE extension across Death Valley. This tectonic regime would result in subsidence of Death Valley
The openwork block deposits in the Western Cape Mountains may have a variety of origins. However, some summit deposits appear to be periglacial blockfields and blockstreams and, as such, are probably the most widespread manifestation of cold Late
Cette grotte a été formée dans une strate calcaire de 6-12 m de l'Ordovicien inférieur dans des conditions hydrogéologiques fermées du bassin artésien d'Angaro-Lensky (fleuve Léna). Le système de grottes a probablement été formé par la corrosion
L'année 2000 a vu le vêlage de plusieurs icebergs de très grande taille dans les mers de Ross et de Weddell de l'Antarctique, incluant le vêlage de B-15, l'iceberg probablement le plus grand jamais observé. Présentation de l'imagerie satellite
mesurées dans l'Alaska Arctique indiquent que des mouvements de plusieurs décimètres peuvent se produire facilement pendant une seule saison de dégel. Ces mouvements diapiriques constituent probablement un mécanisme important dans la formation des
, and in other places by a steeper and narrower supratidal ramp. The morphological and sedimentary evidence suggests that the supratidal ramp and ledges were also formed during the last interglacial stage, whereas the wider intertidal platform is probably
). Caesium-137 analysis of floodplain sediment cores has been used to estimate average rates of overbank sedimentation during the last 30 to 40 years. The residence time of the fine-grained sediment stored on the channel bed is probably less than one year