Results 21 to 30 of about 142,920 (284)

Glacier area and volume changes of Hidden Valley, Mustang, Nepal from ~1980s to 2010 based on remote sensing [PDF]

Proceedings of the International Association of Hydrological Sciences, 2015
Glaciers are one of the important natural resources of freshwater and sources of water for hydropower, agriculture and drinking whenever the water is scarce.
L. Lama, R. B. Kayastha, S. B. Maharjan, S. R. Bajracharya, M. B. Chand, P. K. Mool   +5 more
doaj   +1 more source

Spatial distribution and characteristics of Andean ice masses in Argentina: results from the first National Glacier Inventory

Journal of Glaciology, 2020
Glaciers and the periglacial environment in Argentina have been protected by the Law since 2010. This legislation required the development of the first National Glacier Inventory (NGI), which was officially presented in May 2018 and based on satellite ...
Laura Zalazar, Lidia Ferri, Mariano Castro, Hernán Gargantini, Melisa Gimenez, Pierre Pitte, Lucas Ruiz, Mariano Masiokas, Gustavo Costa, Ricardo Villalba   +9 more
doaj   +1 more source

An automatic approach to delineate the cold–temperate transition surface with ground-penetrating radar on polythermal glaciers [PDF]

Annals of Glaciology, 2014
AbstractGround-penetrating radar has been widely used to map the thermal structure of polythermal glaciers. Hitherto, the cold–temperate transition surface (CTS) in radargrams has been identified by a labour-intensive and subjective manual picking method. We introduce a new automatic approach for picking the CTS that uses the difference in signal power
Clemens Schannwell, Tavi Murray, Bernd Kulessa, Alessio Gusmeroli, Albane Saintenoy, Peter Jansson   +5 more
openaire   +3 more sources

Debris cover and surface melt at a temperate maritime alpine glacier: Franz Josef Glacier, New Zealand [PDF]

, 2012
Melt rates on glaciers are strongly influenced by the presence of supraglacial debris, which can either enhance or reduce ablation relative to bare ice.
Brook, Martin S., Winkler, S, Hagg, W, Hagg, Wilfried, Winkler, Stefan, Brook, M. S.   +5 more
core   +1 more source

Automatic delineation of glacier grounding lines in differential interferometric synthetic-aperture radar data using deep learning [PDF]

Scientific Reports, 2021
AbstractDelineating the grounding line of marine-terminating glaciers—where ice starts to become afloat in ocean waters—is crucial for measuring and understanding ice sheet mass balance, glacier dynamics, and their contributions to sea level rise. This task has been previously done using time-consuming, mostly-manual digitizations of differential ...
Mohajerani, Yara, Jeong, Seongsu, Scheuchl, Bernd, Velicogna, Isabella, Rignot, Eric, Milillo, Pietro   +5 more
openaire   +5 more sources

Sustained retreat of the Pine Island Glacier [PDF]

, 2013
We use satellite observations to show that, between 1992 and 2011, the Pine Island Glacier hinge line retreated at a rate of 0.95 ± 0.09 km yr−1 despite a progressive steepening and shoaling of the glacier surface and bedrock slopes, respectively, which ...
Vaughan, D. G., Gourmelen, N., Kim, S. W., Wingham, D. J., Shepherd, A., Park, J. W.   +5 more
core   +1 more source

Influence of subglacial drainage system evolution on glacier surface motion: Haut Glacier d'Arolla, Switzerland [PDF]

, 2002
The relationship between the evolution of subglacial drainage system morphology and spatial patterns of glacier surface velocity was investigated using dye tracing experiments and ground surveying throughout the 1995 melt season at Haut Glacier d'Arolla,
Ian Willis, Sharp, M., Wohlleben, T., Peter Nienow, Mair, D., Martin Sharp, Willis, I., Trudy Wohlleben, Douglas Mair, Nienow, P.   +9 more
core   +1 more source

Using L-band SAR coherence to delineate glacier extent

Canadian Journal of Remote Sensing, 2010
Significant retreat has been seen in many glaciers worldwide. With increasing concern about the impact of global warming, there has been a concerted effort to monitor ongoing change. Projects such as Global Land Ice Measurements from Space (GLIMS) rely on the contributions of institutions worldwide to update a global database of digital glacier ...
D. K. Atwood, F. Meyer, A. Arendt
openaire   +1 more source

Intra-annual and intra-seasonal flow dynamics of a High Arctic polythermal valley glacier [PDF]

, 2002
Measurements of surface dynamics on polythermal John Evans Glacier, Nunavut, Canada, over two winter periods and every 7-10 days throughout two melt seasons (June-July 2000, 2001) provide new insight into spatio-temporal patterns of High Arctic glacier ...
Bingham, R.G., Nienow, P.W., Sharp, M., Nienow, Peter W., Sharp, Martin J., Bingham, RG, Nienow, PW, Sharp, MJ, Bingham, Robert George, Bingham, Robert G.   +9 more
core   +1 more source

Crevasses triggered on Pine Island Glacier by drilling through an exceptional melt layer [PDF]

, 2010
The basic theory of crevasse formation suggests that crevasses initiate at or near the surface. However, due to variations in stress with depth, it has been suggested that it is possible for crevasses to initiate at depths of 10–30m.
Julian B. T. Scott, Vaughan, David, Scott, Julian B.T., Robert G. Bingham, Andrew M. Smith, Smith, Andrew, Smith, Andrew M., Bingham, Robert, Vaughan, David G., Scott, Julian, Bingham, Robert G., David G. Vaughan, Julian B.T. Scott   +12 more
core   +1 more source