Results 21 to 30 of about 191,263 (242)

Viscosity and elasticity: a model intercomparison of ice-shelf bending in an Antarctic grounding zone

open access: yesJournal of Glaciology, 2017
Grounding zones are vital to ice-sheet mass balance and its coupling to the global ocean circulation. Processes here determine the mass discharge from the grounded ice sheet, to the floating ice shelves.
CHRISTIAN T. WILD   +2 more
doaj   +1 more source

Antarctica [PDF]

open access: yesBulletin of the American Geographical Society, 1902
An enlargement of a paper published in vol. CLI and CLII of the Journal of the Franklin institute. ; The legendary "Terra Australis incognita" and voyages leading from a belief to a disbelief in it.--Voyages up to and including the discovery of the continent of Antarctica.--Voyages subsequent to the discovery of the continent of Antarctica.
openaire   +3 more sources

Extremely low long‐term erosion rates around the Gamburtsev Mountains in interior East Antarctica [PDF]

open access: yes, 2010
The high elevation and rugged relief (>3 km) of the Gamburtsev Subglacial Mountains (GSM) have long been considered enigmatic. Orogenesis normally occurs near plate boundaries, not cratonic interiors, and large‐scale tectonic activity last occurred in ...
Cox, S. E.   +4 more
core   +2 more sources

The History of Astrophysics in Antarctica [PDF]

open access: yes, 2004
We examine the historical development of astrophysical science in Antarctica from the early 20th century until today. We find three temporally overlapping eras, each having a rather distinct beginning.
Andres   +72 more
core   +3 more sources

Seawater acidification more than warming presents a challenge for two Antarctic macroalgal-associated amphipods [PDF]

open access: yes, 2016
Elevated atmospheric pCO2 concentrations are triggering seawater pH reductions and seawater temperature increases along the western Antarctic Peninsula (WAP).
Amsler, Charles D.   +4 more
core   +2 more sources

Influence of Sea-Ice Anomalies on Antarctic Precipitation Using Source Attribution in the Community Earth System Model [PDF]

open access: yes, 2020
We conduct sensitivity experiments using a general circulation model that has an explicit water source tagging capability forced by prescribed composites of pre-industrial sea-ice concentrations (SICs) and corresponding sea surface temperatures (SSTs) to
Fyke, Jeremy G.   +7 more
core   +3 more sources

Merging Biocatalysis and Chemocatalysis in Flow: State‐of‐the‐Art and Future Directions for Sustainable Synthesis

open access: yesAngewandte Chemie, EarlyView.
This review highlights recent advances in integrating biocatalysis and chemocatalysis in continuous flow to create streamlined, sustainable processes. It examines chemo‐enzymatic cascades combining at least one enzymatic and one chemical step, discusses challenges such as enzyme immobilization, leaching, and reactor clogging, and presents solutions ...
Petros Siasiaridis   +2 more
wiley   +2 more sources

Impacts of local human activities on the Antarctic environment [PDF]

open access: yes, 2008
We review the scientific literature, especially from the past decade, on the impacts of human activities on the Antarctic environment. A range of impacts has been identified at a variety of spatial and temporal scales.
Agnew   +91 more
core   +2 more sources

Mechanochemistry Meets Catalysis: Metal Complexes for Greener Organic Transformations

open access: yesAngewandte Chemie, EarlyView.
Mechanochemistry is redefining metal catalysis by controlling catalyst formulation, speciation, and deployment. This Review shows how milling, LAG, RAM, and TSE enable rapid metal‐complex assembly, distinctive catalytic manifolds, and scalable synthesis beyond solution chemistry.
Sourav Behera   +2 more
wiley   +2 more sources

Four new species of Parvoplaca ( Teloschistales , Ascomycota )

open access: yesPlant and Fungal Systematics, 2023
The genus Parvoplaca is extended with four new species: P. candanii from Antarctica, P. lamprocarpa from Alaska, and P. macroborealis and P. tenebrosa from Oregon. Collections identified as P.
Ulf Arup   +2 more
doaj   +1 more source

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