Results 41 to 50 of about 1,324,260 (297)

Scientific access into Mercer Subglacial Lake: scientific objectives, drilling operations and initial observations

open access: yesAnnals of Glaciology, 2021
The Subglacial Antarctic Lakes Scientific Access (SALSA) Project accessed Mercer Subglacial Lake using environmentally clean hot-water drilling to examine interactions among ice, water, sediment, rock, microbes and carbon reservoirs within the lake water
John C. Priscu   +36 more
doaj   +1 more source

Amplified bioproductivity during Transition IV (332 000–342 000 yr ago): evidence from the geochemical record of Lake El'gygytgyn [PDF]

open access: yes, 2013
To date, terrestrial archives of long-term climatic change within the Arctic have widely been restricted to ice cores from Greenland and, more recently, sediments from Lake El'gygytgyn in northeast Arctic Russia.
N. Nowaczyk   +15 more
core   +3 more sources

The backscattering characteristics of thermokarst lake ice in the qinghai-tibet plateau from SAR [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2014
A thermokarst lake is an important indicator of changes in climate, which cause considerable thermal distribution to the surrounding permafrost. The imaging radar has demonstrated the capability to determine when and which lakes freeze or do not freeze ...
Z. Li, B. Tian, P. Tang
doaj   +1 more source

One-dimensional simulation of lake and ice dynamics during winter

open access: yesJournal of Limnology, 2014
An ice formation model, based on the solution of the heat conduction equation across blue ice, white ice and snow cover, is integrated into the Dynamic Reservoir Simulation Model (DYRESM) to allow for one-dimensional (vertical) winter simulation of lake ...
Ali Oveisy, Leon Boegman
doaj   +1 more source

Clean subglacial access: prospects for future deep hot-water drilling [PDF]

open access: yes, 2015
Accessing and sampling subglacial environments deep beneath the Antarctic Ice Sheet presents several challenges to existing drilling technologies. With over half of the ice sheet believed to be resting on a wet bed, drilling down to this environment must
Smith, Andrew   +38 more
core   +1 more source

The Crystallization of Lake Ice [PDF]

open access: yesNature, 1889
ON returning recently from North Wales, I was very pleased to meet with a description, by Mr. James C. McConnel (NATURE, December 27, p. 203), of the elaborate experiments performed by himself and Mr. Dudley A. Kidd on glacier and lake ice at St. Moritz. An experiment I had made on the ice of Llyn Creigenen, a small lake to the north-west of Tyrau Mawr,
openaire   +4 more sources

Simulating lake ice phenology using a coupled atmosphere–lake model at Nam Co, a typical deep alpine lake on the Tibetan Plateau [PDF]

open access: yesThe Cryosphere
Simulating the ice phenology of deep alpine lakes is important and challenging in coupled atmosphere–lake models. In this study, the Weather Research and Forecasting (WRF) model, coupled with two lake models, the freshwater lake (WRF–FLake) model and the
X. Zhou, B. Wang, X. Ma, Z. La, K. Yang
doaj   +1 more source

Pharmacological chromatin remodeling enhances response to estrogen therapy in ER+ breast cancer

open access: yesMolecular Oncology, EarlyView.
Estrogen therapy elicits clinical benefit in ~ 30% of patients with endocrine‐resistant estrogen receptor (ER)‐positive breast cancer. Based on findings that ER transcriptional activation underlies response to estrogen therapy, we tested the effects of epigenetic dysregulation via pharmacological inhibition of histone deacetylases (HDACi).
Anneka L. Johnson Thomas   +16 more
wiley   +1 more source

Preliminary analysis of life within a former subglacial lake sediment in Antarctica [PDF]

open access: yes, 2013
Since the first descriptions of Antarctic subglacial lakes, there has been a growing interest and awareness of the possibility that life will exist and potentially thrive in these unique and little known environments. The unusual combination of selection
Thorne, Michael A. S.   +17 more
core   +1 more source

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