Results 21 to 30 of about 5,616 (306)

Geomatic Techniques Applied to the Dynamic Study (2001–2019) of the Rock Glacier in the Veleta Cirque (Sierra Nevada, Spain)

open access: yesLand, 2022
During the Little Ice Age (LIA), Corral del Veleta (Sierra Nevada) housed a small glacier of which relict glacial ice and permafrost still remain under packets of ice blocks. Currently, it is considered the southernmost rock glacier in Europe.
José Juan de Sanjosé Blasco   +5 more
doaj   +1 more source

Spectral roughness of glaciated bedrock geomorphic surfaces: Implications for glacier sliding [PDF]

open access: yes, 2000
A microroughness meter (MRM) was used to measure the high-frequency roughness of a number of geomorphic surfaces in the forefield of Glacier de Tsanfleuron, Switzerland.
Martin J. Siegert   +5 more
core   +1 more source

Rock waste dumps on the Davydov Glacier (Akshyirak Range, Tien Shan)

open access: yesЛëд и снег, 2015
Since 1995, a barren rock has been formed at the Davydov Glacier, due to the works at the Kumtor Gold Mine. By the end of 2010, total amount of the rock, stockpiled on the glacier, apparently exceeded 200 million tons, the height of dumps of rock ...
V. A. Kuzmichenok
doaj   +1 more source

Transitional rock glaciers at sea level in northern Norway [PDF]

open access: yesEarth Surface Dynamics, 2022
Rock glaciers are geomorphological expressions of permafrost. Close to sea level in northernmost Norway, in the subarctic Nordkinn peninsula, we have observed several rock glaciers that appear to be active now or were active in the recent past ...
K. S. Lilleøren   +5 more
doaj   +1 more source

Kinematics and geomorphological changes of a destabilising rock glacier captured from close-range sensing techniques (Tsarmine rock glacier, Western Swiss Alps)

open access: yesFrontiers in Earth Science, 2022
Accurately assessing landform evolution and quantifying rapid environmental changes are gaining importance in the context of monitoring techniques in alpine environments.
Sebastián Vivero   +6 more
doaj   +1 more source

Photogrammetric Methodology for the Production of Geomorphologic Maps: Application to the Veleta Rock Glacier (Sierra Nevada, Granada, Spain)

open access: yesRemote Sensing, 2009
In this paper we present a stereo feature-based method using SIFT (Scale-invariant feature transform) descriptors. We use automatic feature extractors, matching algorithms between images and techniques of robust estimation to produce a DTM (Digital ...
José Jesús Guerrero   +4 more
doaj   +1 more source

An energy-balance model for debris-covered glaciers including heat conduction through the debris layer [PDF]

open access: yes, 2010
Extensive covers of supraglacial debris are often present in glacier ablation areas, and it is essential to assess exactly how the debris affects glacier melt rates.
Brock, B.W.   +5 more
core   +1 more source

Besiberris glacigenic rock glacier (Central Pyrenees, Spain) : mapping surface horizontal and vertical movement (1993-2003)

open access: yesCuadernos de Investigación Geográfica, 2013
A ten-year (1993-2003) geodetic survey was conducted at the Besiberris rock glacier, a tongue-shaped, glacigenic rock glacier, located in the eastern-central Spanish Pyrenees (42º35'48''N, 0º49'20''E).
J. Chueca Cía, A. Julián Andrés
doaj   +1 more source

Monitoring the crisis of a rock glacier with repeated UAV surveys [PDF]

open access: yesGeographica Helvetica, 2019
In this study, rapid topographic changes and high creeping rates caused by the destabilisation of an active rock glacier in a steep mountain flank were investigated in detail with five unmanned aerial vehicle (UAV) surveys between June 2016 and September 
S. Vivero, C. Lambiel
doaj   +1 more source

Hydraulic impacts of glacier advance over a sediment bed [PDF]

open access: yes, 2006
A sedimentary sequence of till overlying a gravel aquifer was instrumented with water-pressure transducers prior to a small, anticipated surge of the margin of the glacier Breiðamerkurjökull in Iceland.
Zatsepin, Sergei, Boulton, Geoffrey
core   +1 more source

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