A protalus rampart related to alpine debris flows in the Kuranosuke cirque Northern Japanese Alps
Coulée de blocs ; Dynamique de versant ; Géographie physique ; Géomorphogenèse ; Japon ; Kuranosuke ; Montagne ; Périglaciaire ; Rempartprotalus
Morphologie, sédimentologie et processus actifs d'un rempartprotalus en cours de formation sur une petite niche de nivation. Les coulées de blocs sont plus efficaces que les chutes de pierres.
A protalus rampart from the western Mourne mountains, Northern Ireland
Cristallin ; Dynamique de versant ; Géographie de l'Europe ; Géomorphogenèse ; Mourne ; Northern Ireland ; Périglaciaire ; Quaternaire zones moyennes ; Rempartprotalus ; Royaume-Uni ; Versant
Un petit rempartprotalus a été identifié près de la vallée de Pigeon Rock River dans l'ouest des Mourne. Les caractéristiques géomorphologiques et la topographie suggèrent un âge Zone III ou Nohanagan. Ceci coïncide avec l'hypothèse d'une limite
Glaciers rocheux et rempartsprotalus - un effet de l'évolution du tardiglaciaire des Monts Tatra
This article introduces an analysis of two examples of cryogenic landforms - a rock glacier and a protalus rampart in the high-mountain zone of the Tatra Mountains. Field geomorphological research and airphoto interpretation helped
processes during the last glaciation. The most spectacular protalus ramparts have been recognised in areas representing remnants of the preglacial rather that the glaciated Tatra landscape (i. e. Liptovské kopy). The characteristics of these forms
are similar to the protalus ramparts described in European, Japanese and North American mountains. - (BJ)
Calcul du taux d'éboulement pendant le Stade du Loch Lomond (11 000-10 000 BP) en Ecosse et dans le Lake District sur la base du volume de débris de 8 rempartsprotalus. Le retrait de 1,14-1,61 m pendant cette période (1,5-4 mm/an) correspond à un
Neoglacial climatic inferences from rock glaciers and protalus ramparts, southern Lemhi Mountains, Idaho
The more widespread protalus ramparts were useful for examining the importance of microsites in the northern and southern portions of the range. In the north, the climate was sufficiently severe to produce favorable microclimates for protalus
development. Farther south, the less severe climate required a climatic deterioration of regional significance before protalus ramparts could develop.
Protalus Ramparts on Navajo Mountain, Utah, USA : reinterpretation as blockslope-sourced rock glaciers
Here the AA. report the results of field reinvestigation of the Navajo Mountain ridges, designed to evaluate the validity of their interpretation as protalus ramparts, and discuss possible alternative origins for these landforms.
Protalus ramparts and the altitude of the local equilibrium line during the last glacial stage in Bokspruit, East Cape Drakensberg, South Africa
A ridge of unconsolidated debris at an altitude of 2000 m, located beneath cliffs in the East Cape Drakensberg of South Africa, is interpreted on morphological and sedimentological evidence as a protalus rampart. The rampart is believed to have
A relict pronival (protalus) rampart in the Tararua Range, North Island, New Zealand
in the Tararua Range, through measurements of ridge morphology and sedimentary properties. The single ridge morphology precludes a protalus rock glacier origin, while the lack of a broad hillslope scar and debris apron beyond the ridge excludes a landslide origin
. Instead, the AA. interpret the ridge as a pronival (protalus) rampart formed by supranival debris supply–from the ca. 200 m-high southeastern slopes of Dundas Ridge–across a snowbed. Re-distribution of snow by prevailing westerlies from Mt Dundas Ridge
This paper analyzes the results of an inventory of rock glaciers and protalus lobes in the South Shetland Islands. The work is based on aerial photo-interpretation, field recognition and measurements, and estimations of volumes, debris transport
de différencier les éboulis de gravité, éboulis à avalanches, bourrelets-protalus, éboulis fluants, éboulis ruisselés, cônes et talus d'avalanches, éboulis soliflués et dépôts de solifluxion. En analysant leurs rapports spatiaux avec les terrasses
protalus ramparts et d'abondants glaciers rocheux ou couverts. La répartition géographique de ces accumulations et leurs traits spécifiques permet de caractériser le milieu post-glaciaire et de définir une Province Périglaciaire originale. Cela force à
Cuchillar de las Navajas. A protalus rampart occurs at the base of the hollow. The studies, conducted between 1992 and 1998, were designed to determine the geomorphological characteristics of Hoya, the mobility of the deposits, and the characteristics