Results 21 to 30 of about 108,974 (263)

A Comparison of Frequency Domain Electro-Magnetometry, Electrical Resistivity Tomography and Borehole Temperatures to Assess the Presence of Ice in a Rock Glacier

open access: yesFrontiers in Earth Science, 2020
Alpine permafrost is currently warming, leading to changes such as active layer deepening and talik formation. Frequency domain electro-magnetometry (FDEM) measurements were tested as a simple and efficient method to investigate ground characteristics ...
Jacopo Boaga   +6 more
doaj   +1 more source

Vertical Structure of a Snowfall Event Based on Observations From the Aircraft and Mountain Station in Beijing

open access: yesFrontiers in Environmental Science, 2021
An aircraft platform, ground-based disdrometer, cloud radar, radiometer, and automatic station were combined to study a snowfall case (16:30–21:00 observed by ground cloud radar) on the Yangqing Mountains in Beijing.
Yu Huang   +12 more
doaj   +1 more source

Mathematical Model for Determination of EMF and Current Induced in the Loop of Lighting Protection Cable by Magnetic Fields of 220 KV Phase Currents

open access: yesРоссийская Арктика, 2022
The electrical grid of regional power systems primarily uses double-circuit 220 kV overhead power lines to function. This paper provides information on the problem of ice formation on overhead ground wires of 220 kV power lines, including a brief ...
Krotkov E.A.   +2 more
doaj   +1 more source

Formation of Ground-Ice [PDF]

open access: yesNature, 1908
IN Canada we have made an extended study of the formation of ground-ice, or anchor-ice as it is called here, and consequently I was interested to see a letter in NATURE of January 30 from Mr. Hampson asking for information as to its origin.
openaire   +2 more sources

Microtopographic control on the ground thermal regime in ice wedge polygons [PDF]

open access: yesThe Cryosphere, 2018
The goal of this research is to constrain the influence of ice wedge polygon microtopography on near-surface ground temperatures. Ice wedge polygon microtopography is prone to rapid deformation in a changing climate, and cracking in the ice wedge ...
C. J. Abolt   +4 more
doaj   +1 more source

InSAR sensitivity to active layer ground ice content in Adventdalen, Svalbard [PDF]

open access: yesThe Cryosphere
Interferometric Synthetic Aperture Radar (InSAR) remote sensing of surface displacement in permafrost environments has the potential to resolve ground ice dynamics and potentially active layer thickness, yet field validation is sparse.
L. Wendt   +7 more
doaj   +1 more source

Ice Volumes in Permafrost Landscapes of Arctic Yakutia

open access: yesLand, 2022
This article is devoted to the study of the distribution of ground ice volumes in the upper layers of 5–10 m permafrost in the permafrost landscapes of Arctic Yakutia.
Alexander N. Fedorov   +10 more
doaj   +1 more source

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

open access: yesFEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee   +3 more
wiley   +1 more source

Projecting circum-Arctic excess-ground-ice melt with a sub-grid representation in the Community Land Model [PDF]

open access: yesThe Cryosphere, 2020
To address the long-standing underrepresentation of the influences of highly variable ground ice content on the trajectory of permafrost conditions simulated in Earth system models under a warming climate, we implement a sub-grid representation of excess
L. Cai   +4 more
doaj   +1 more source

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