Examples of recent research on glacierpermafrost interaction

Materials and processes ice formation Formation, preservation or melting of permafrost underneath and in front of polythermal mountain glaciers is a complex topic that is still far from being understood. Recent studies using modern field methodologies are presented by Kneisel et al. (2000), Kneisel (2003) or Etzelmiiller & Hagen (2005) for European mountains. Latent heat in sub-glacial permafrost greatly influences basal thermal regimes and consequently the flow of polythermal glaciers and...

Modern Svalbard permafrost aggradation

Twentieth century climatic changes in Svalbard have been well documented by meteorological data since 1911 (F0rland et al. 1997). Around 1920 a marked warming within 5 years changed the mean annual air temperature at sea level from about 9.5 to 4.5 C. Later, from 1957 to 1968 the air temperature dropped by about 4 C, followed by gradual increase towards the end of the twentieth century (Fig. 3). Modern MAAT at sea level is c. -5 C, which is about 4 C warmer compared with early twentieth-century...

Holocene permafrost aggradation in Svalbard

Permafrost Holocene

Department of Physical Geography, Institute of Geosciences, University of Oslo, PO Box 1042 Blindern, N-0316 Oslo and Department of Geology, University Centre in Svalbard, N-9170 Longyearbyen, Norway Abstract The distribution and dynamics of permafrost represent a complex problem, confounded by a short research history and a limited number of deep vertical temperature profiles. This lack of knowledge is pronounced for the High Arctic, where most permafrost is found and where amplified responses...

Glacierpermafrost hydrological interconnectivity Stagnation Glacier Bylot Island Canada

Department of Geography, University of Calgary, 2500 University Drive, Calgary, Alberta, Canada T2N1N4 (e-mail moor man ucalgary. ca) Abstract The complex thermal structure in areas where polythermal glaciers and continuous permafrost are present increases the potential for direct linkages between subsurface water conduits within glaciers and permafrost. In this study, hydrologic features of a glacier and the surrounding ice-cored moraines were examined and the potential for englacial water to...

Cerro Yanahuara Cerro Jollpa ridge 722325 W 1535 40 S to 722130 W 1543 40 S

Gokyo Contour Interval

Cerro Yanahuara and Cerro Jollpa form the northern and southern end of a 16 km-long ridge Fig. 2. Topographic map of the Cerro Jollpa Ridge (after Instituto Geographico Militar 1967). Contour line interval 100 m. Grid reference numbers refer to the UTM zone 19. Inset shows detail of aerial photograph no. 14064 of the HYCON flights in July 1955. Letters refer to features mentioned in the text 1 Cerro Jollpa, 2 top of rock glacier snouts, 3 small trees Fig. 2. Topographic map of the Cerro Jollpa...

Introduction and historical background

For historical reasons, research on glaciers and permafrost has primarily evolved along separate lines. Permafrost science has its main roots in glacier-free sub-Arctic and Arctic lowlands, whereas the science of glaciers originated in high mountains where permafrost is not easily recognized. Today, diverging scientific cultures exist in the two fields with physicists largely influencing glacier research and geoscientists engineers leading permafrost science. Corresponding terminological...

Case Histories of glacierpermafrost Interaction

Kolka Karmadon Rock Ice Slide

Combined glacier-permafrost effects at In the Gruben cirque, a polythermal glacier and the relatively warm permafrost of a large, active rock glacier are juxtaposed. Long-term research in this area has accompanied and assisted successful flood prevention work from ice-marginal as well as thermokarst lakes after two major lake outbursts and debris flows in 1968 and 1970 (Haeberli et al. 2001). Figure 5 presents the site and its most critical aspects. The highest reaches of the accumulation area...