Résultats de la recherche (89 résultats)

Affinez votre recherche

Par Collection Par Auteur Par Date Par Sujet Par Titre
  • The formation and hydrological significance of cryoconite holes
  • Antarctica ; Bibliography ; Biogeochemistry ; Cryoconite hole ; Ecosystem ; Glacial features ; Glacier ; Hydrology
  • While studied periodically since 1870, in the last decade there has been a resurgence of interest in understanding the hydrology, biogeochemistry and ecology of cryoconite holes, and so it is timely to take stock of the current state
  • of understanding, and to compile a roadmap for future endeavours. This paper combines past findings into a systems framework so as to identify the key integrative findings of cryoconite holes as single entities, and as part of the wider glacier system.
  • Tectonic speleogenesis of Devis Hole, Nevada, and implications for hydrogeology and the development of long, continuous paleoenvironmental records
  • Devils Hole is located in a region of active extension. Such extensional environments can provide conditions favorable for accumulation of deposits preserving long, continuous paleoenvironmental records. The precipitates in Devils Hole store
  • chronologies of flow system water-level fluctuations, hydrochemistry, a half-million-yr proxy paleoclimate record, evidence of Devis Hole's tectonic origin, and probably atmospheric circulation.
  • Avohakkuualueen supan lämpoolojen vaikutus puunkasvuun Lammin Kilparistillä (The impact of the microclimate on tree growth in a kettle hole in a deforested area in Lammi, southern Finland)
  • Agroclimatologie ; Croissance des arbres ; Cryokarst ; Dendrologie ; Déforestation ; Finlande ; Géographie de l'Europe ; Häme ; Kettle hole ; Lammi ; Microclimat ; Végétation ; Zone froide
  • On clear nights with little or no wind strong outgoing radiation causes cold air to flow down the slopes and rapidly fill the deepest part of the kettle hole. In the cold nights at the beginning of the growth period, frost affected the lowest
  • branches of the spruces growing in the lower parts of the kettle hole, and smaller trees were totally frozen. Tree growth increased in the upper slopes of the kettle hole, where the trees have survived the radiation shock following the deforestation.
  • Solle als Dokumente der Eisdynamik. (Kettle holes as documents of ice-dynamics)
  • South-Western of Rostock a number of kettle holes are to be found, which are located in the form of garlands. This phenomenon is discussed and interpreted as a result of the movement dynamics of glaciers.
  • Gestaltung wassergefüllter Solle in der Agrarlandschaft. (Formation of water-filled kettle holes in the rural landscape)
  • On the basis of field investigations at water-filled hollow moulds (kettle holes) in Ostbrandenburg the density of this landscape element, the function and the efficiency in the rural landscape were analysed. The focus of this investigation lies
  • in the integration of the kettle holes in the management of the rural landscape concerning ecological aspects which hall be low in costs and expenditure. (HL).
  • Observational study and summertime ice at the Nakayama Wind-Hole in Shimogo, Fukushima
  • Nakayama Wind-Hole is an important Natural Monument to be preserved for a rare alpine plant in low altitude which survive under the cold air blowing form the wind hole. For this reason, the AA. have conducted here in situ observation for more than
  • a year from February 1998 through July 1999. This paper documents the comprehensive observational result for the summertime ice at the Nakayama Wind-Hole. It supports the theory of dynamic thermal filter where only coldness tends to accumulate
  • A light portable stream-driven ice drill suitable for drilling holes in ice and firn
  • This contribution explains the characteristics of a newly developed ice drill which is particularly geared to the needs of glaciologists. It is primarily designed for drilling holes for ablation stakes and for measuring water levels or temperatures
  • Bore-hole video and photographic cameras
  • slip over a one year period in a 137 m holed at the top of the flow line on an ice-cap in northern Ellesmere Island. However, the bore hole has deformed to an elliptical cross-section near the bed and some pronounced extrusion-like layers have developed
  • Deep drill holes in the ocean floor
  • Observations on elephant mortality and bones in water holes
  • Morphodynamics and seismostratigraphy of a deep hole at tidal channel confluence
  • This paper describes the dominant bed load transport circulatory pattern over the tidal channel confluence as well as the scour hole genesis and evolution in Bahía Blanca estuary, Argentina. In addition, the AA. detail the bed morphology associated
  • with the sediment availability of each channel and sedimentary facies. As scour holes exhibit similar characteristics, their focus of attention was centred on a scour hole located inward, in the first bifurcation of Tres Brazas channel. The seismostratigraphic
  • Paleoclimatic inferences from a 120 000 yr calcite record of water table fluctuation in Browns Room of Devils Hole, Nevada
  • , a subterranean air-filled chamber of Devils Hole fissure adjacent to the discharge area of the large Ash Meadows groundwater flow system in southern Nevada. Although different in detail, water-level fluctuation recorded by Browns Room calcites generally correlate
  • Dangerous holes in global environmental governance : the roles of neoliberal discourse, science, and California agriculture in the Montreal Protocol
  • Based on studies conducted in different kinds of karst areas all around in the carpathian Basin, authors describe and evaluate the development and evolution of sink holes. Using distribution of functions and analysing parameter spaces, the sinks
  • holes of covered and uncovered karst surfaces are compared. - (ZK)
  • In South Eastern Iceland, some ice-contact features are described, at the foot of Vatnajokull especially| the development of kettle holes is the result of fast modifications of sandur areas and moraines by the melting out of glacier ice. Two main
  • kinds of kettle holes are distinguished: kettles resulting from the melting out of icebergs swept away by glacier bursts (jokulhaups), collapse structures in glacial and fluvioglacial deposits after burying of dead when ice margins retreat.
  • Resurvey of the Byrd station, Antarctica, drill hole
  • Hazards, hazes and holes: a critique of the environment as hazard and general reflections on disaster research
  • Gully initiation and implications for management of scour holes in the vicinity of the Jabiluka mine, Northern Territory, Australia
  • , and a field soil profile was modelled in a test tank with an open side. The results revealed that the occurrence of the collapse of overhanging layers could be attributed to the development of a scour hole in the open side; the greater the flow rate, the lower
  • the proportion of on-wall runoff. On-wall runoff played a more important role in the development of scour holes than off-wall runoff. The shape of scour holes formed under different flow conditions was similar. Also, the scour hole is not apparently related
  • Borrow pits are the large holes made when fill was required to build up roadbeds and ramps during the construction of the U.S. Interstate highway system. In the process, a new roadside settlement feature has been created. - (DWG)