Results 71 to 80 of about 257,875 (187)

A simplified mechanical model for explaining fast-rising jökulhlaups

Applications in Engineering Science, 2020
The paper describes a simplified mathematical model aimed at fitting available hydrographs of floods from subglacial lakes reaching their peak almost linearly in time, the so-called fast-risingjökulhlaups.
Benedetta Calusi, Angiolo Farina, Fabio Rosso   +2 more
doaj   +1 more source

Quantifying the Surface Deformation of Pingos on the Alaskan North Slope Using Interferometric Synthetic Aperture Radar (InSAR)

Permafrost and Periglacial Processes, Volume 37, Issue 4, Page 682-691, October/December 2026.
ABSTRACT Pingos are large mounds with cores formed of intrusive ice that form in periglacial landscapes. These ice structures can form in regions of discontinuous permafrost, commonly as hydraulic or open‐system pingos, or in locations of continuous permafrost, commonly as hydrostatic or closed‐system pingos.
Venezia M. Follingstad, Roger J. Michaelides, Matthew R. Siegfried, Tyler M. Meng, John Bradford, Kynan H. G. Hughson, Alexia R. Kubas, Andrew Mullen, Enrica Quartini, Austin Routt, Hanna G. Sizemore, Andrei Swidinsky, Britney E. Schmidt   +12 more
wiley   +1 more source

Thirteen years of subglacial lake activity in Antarctica from multi-mission satellite altimetry

Annals of Glaciology, 2018
The ability to detect the surface expression of moving water beneath the Antarctic ice sheet by satellite has revealed a dynamic basal environment, with implications for regional ice dynamics, grounding-line stability, and fluxes of freshwater and ...
Matthew R. Siegfried, Helen A. Fricker
doaj   +1 more source

Rapid Increase in Geogenic CO2 Emissions from Antarctic Permafrost

Global Biogeochemical Cycles, Volume 40, Issue 10, October 2026.
Abstract Thawing permafrost can amplify climate change by releasing previously stored carbon, but observations of this feedback come mainly from the Arctic. Ice‐free Antarctic terrains are generally regarded as minor CO2 sources, although sub‐permafrost brines and deep carbon reservoirs may support localized geogenic degassing.
L. Ruggiero, A. Sciarra, F. Florindo, L. Davidson, J. Beagley, C. Berquist, G. Wilson   +6 more
wiley   +1 more source

3D Architecture of Kodiak Butte as Evidence of Fluvial or Shoal‐Water Environments in Jezero Crater, Mars

Journal of Geophysical Research: Planets, Volume 131, Issue 10, October 2026.
Abstract The Mars 2020 mission has explored depositional environments recorded in a fan‐shaped deposit on the western side of Jezero crater. Kodiak butte is an isolated outcrop of sedimentary rock ∼1 km south of the western fan scarp and may be an erosional remnant of said fan.
O. A. Kanine, M. P. Lamb, B. L. Ehlmann, J. P. Grotzinger, C. D. Tate   +4 more
wiley   +1 more source

Air–Water Greenhouse Gases Exchange in Surface Waters of Deception Island (South Shetland Archipelago, Antarctica): Assessment of Drivers of Spatial Variability

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 10, October 2026.
Abstract Greenhouse gases (GHGs) such as Carbon Dioxide (CO2), Methane (CH4), and Nitrous Oxide (N2O) play critical roles in global climate change. CO2 dominates due to its high concentration and long atmospheric lifetime, while CH4 and N2O also exert strong heat‐trapping effects despite shorter residence times. Deception Island, in the Southern Ocean,
S. Amaya‐Vías, A. Brusselman, B. Delille, M. de la Paz, M. Díez‐Minguito, S. Flecha, O. Belyaev, G. Navarro, A. Tovar‐Sánchez, I. E. Huertas   +9 more
wiley   +1 more source

A temperate former West Antarctic ice sheet suggested by an extensive zone of bed channels [PDF]

, 2014
We present radio-echo sounding data and satellite imagery, revealing a series of ancient large sub-parallel subglacial channels preserved in the region between the Möller and Foundation Ice Streams, West Antarctica.
Martin J. Siegert, Tom A. Jordan, Rippin, David M., Jordan, Tom A., Ross, N, Siegert, MJ, Corr, HFJ, Siegert, Martin J., Rippin, DM, Le Brocq, Anne, Hugh F.J. Corr, Jordan, TA, Kathryn C. Rose, Le Brocq, Anne M., Rose, Kathryn C., Bingham, RG, Le Brocq, AM, Anne M. Le Brocq, Ross, Neil, Fausto Ferraccioli, Rose, KC, Ferraccioli, F, Ferraccioli, Fausto, Corr, Hugh F.J., Robert G. Bingham, Neil Ross, David M. Rippin, Bingham, Robert G., K.C. Rose (9005840), et al. (281964)   +29 more
core   +1 more source

Using Multimission Satellite Altimetry to Monitor Subglacial Hydrological Activities in the Totten Basin, East Antarctica

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
In East Antarctica, the largest thinning rates are observed at Totten Glacier in recent years. Hydrologic activity of the three active subglacial lakes (Totten1, Totten2, and Wilkes1) located on Totten Glacier may affect the ice sheet mass balance in the
Jun Liu, Lihui Chen, Denghui Tang, Huan Xie, Xiangbin Cui, Peinan Li   +5 more
doaj   +1 more source

Assessment of glacier lakes development potential in the Central Caucasus

Лëд и снег, 2020
Glacier mass loss and consequent terminus retreat lead to formation and growth of glacier lakes. In Caucasus outbursts of glacial lakes formed in recent decades have led to human casualties and significant damage. In this study the location and volume of
I. I. Lavrentiev, D. A. Petrakov, S. S. Kutuzov, N. V. Kovalenko, A. M. Smirnov   +4 more
doaj   +1 more source

Direct Flux Measurements Reveal CO2 Sinks in Icelandic Glacial Streams Driven by Weathering and Hydrological Mixing

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 10, October 2026.
Abstract Glacier‐fed rivers are increasingly recognized as important components of high‐latitude carbon cycling, yet direct observations of CO2 exchange in proglacial streams remain limited, especially in young basaltic catchments. Here, we quantify spatial and seasonal patterns of CO2 exchange along a 3‐km reach of the glacier‐fed stream Virkisá ...
Ann‐Kathrin Wild, Christina Fasching, Max G. Rudolph, Kyle S. Boodoo, Andreas Hartmannn, Peter Chifflard   +5 more
wiley   +1 more source