Results 21 to 30 of about 3,404,276 (310)

Age of volcanism on Keller Peninsula and assessment of age-constrained volcanic activity on King George Island, West Antarctica [PDF]

Polish Polar Research, 2021
Studies of isotopic ages were conducted for rock samples of the Keller, Visca Anchorage and Domeyko Glacier formations. Together they form a part of the Martel Inlet Group, a terrestrial calc-alkaline volcanic and volcanoclastic suite and they crop out ...
Jerzy Nawrocki, Magdalena Pańczyk, Agata Kozłowska-Roman   +2 more
doaj   +1 more source

Holocene deglaciation of the northern Fildes Peninsula, King George Island, Antarctica

Land Degradation & Development, 2023
The timing and magnitude of Holocene glacial oscillations in most currently ice‐free areas of Antarctica remain unknown. This work focuses on the recent deglaciation in the northern sector of the Fildes Peninsula, King George Island, northern Antarctic ...
M. Oliva, D. Palacios, J. Fernández-Fernández, M. Fernandes, I. Schimmelpfennig, G. Vieira, D. Antoniades, A. Pérez-Alberti, J. García-Oteyza   +8 more
semanticscholar   +1 more source

Trichocera maculipennis (Diptera)—an invasive species in Maritime Antarctica [PDF]

PeerJ, 2018
Antarctica, with its severe conditions, is poor in terrestrial fauna species. However, an increase in human presence together with climate change may cause an influx of non-native species. Here we report a significant increase in colonized area of one of
Marta Potocka, Ewa Krzemińska
doaj   +2 more sources

FROM SPACE TO EARTH: PHYSICAL AND BIOLOGICAL IMPACTS OF GLACIER DYNAMICS IN THE MARINE SYSTEM BY MEANS OF REMOTE SENSING AT ALMIRANTAZGO BAY, ANTARCTICA [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
To determine the biological and physical mechanisms between Lange glacier and its pro-glacier marine system located in Almirantazgo bay, King George Island, Antarctica, specific variables were determined through remote sensing approaches shown in this ...
C. Cárdenas, G. Casassa, G. Casassa, X. Aguilar, D. Mojica, D. Mojica, E. Johnson, F. Brondi   +7 more
doaj   +1 more source

Silicon Isotopic Composition of Dry and Wet-Based Glaciers in Antarctica

Frontiers in Earth Science, 2020
Glaciers and ice sheets export significant amounts of silicon (Si) to downstream ecosystems, impacting local and potentially global biogeochemical cycles.
Jade E. Hatton, Katharine R. Hendry, Catherine Hirst, Sophie Opfergelt, Susann Henkel, Adrián Silva-Busso, Susan A. Welch, Susan A. Welch, Jemma L. Wadham, W. Berry Lyons, W. Berry Lyons, Elizabeth Bagshaw, Michael Staubwasser, Diane M. McKnight   +13 more
doaj   +1 more source

Trends and space–time patterns of near‐surface temperatures on Maxwell Bay, King George Island, Antarctica

International Journal of Climatology, 2022
There is growing interest in the international scientific community in characterizing climate variability in Antarctica because of the continent's fundamental role in regulating the world's climate.
C. Bello, W. Suarez, W. Lavado
semanticscholar   +1 more source

New insights into the structure and function of the prokaryotic communities colonizing plastic debris collected in King George Island (Antarctica): Preliminary observations from two plastic fragments.

Journal of Hazardous Materials, 2021
In Antarctic regions, the composition and metabolic activity of microbial assemblages associated with plastic debris ("plastisphere") are almost unknown. A macroplastic item from land (MaL, 30 cm) and a mesoplastic from the sea (MeS, 4 mm) were collected
S. Cappello, Gabriella Caruso, E. Bergami, A. Macrì, V. Venuti, D. Majolino, I. Corsi   +6 more
semanticscholar   +1 more source

Sources and composition of chemical pollution in Maritime Antarctica (King George Island), part 2: Organic and inorganic chemicals in snow cover at the Warszawa Icefield.

Science of the Total Environment, 2021
The study area is located on King George Island, where 90% of the area is permanently glaciated. This study provides a comprehensive analysis of the inorganic and organic chemistry of snow cover in the icefield and a comparison against previous results ...
D. Szumińska, Joanna Potapowicz, M. Szopińska, S. Czapiewski, U. Falk, M. Frankowski, Ż. Polkowska   +6 more
semanticscholar   +1 more source

A lithostratigraphical and chronological study of Oligocene-Miocene sequences on eastern King George Island, South Shetland Islands (Antarctica), and correlation of glacial episodes with global isotope events

Antarctic Science, 2021
King George Island (South Shetland Islands, Antarctic Peninsula) is renowned for its terrestrial palaeoenvironmental record, which includes evidence for potentially up to four Cenozoic glacial periods.
J. Smellie, W. Mcintosh, R. Whittle, A. Troedson, R. J. Hunt   +4 more
semanticscholar   +1 more source

Methanesulfonate in the firn of King George Island, Antarctica [PDF]

Journal of Glaciology, 2001
AbstractMethanesulfonate was investigated as a potential contributor to the sulfur budget, based on analysis of a firn core from Collins Ice Cap, King George Island, Antarctica (62°10′ S, 58°50′ W). The anion was found to be present at a mean concentration of 0.17 μeq L−1, with a maximum of 0.73 μeq L−1.
Jiankang, Han, Zichu, Xie, Xingping, Zhang, Dongsheng, Dai, Mayewski, Paul A., Twickler, Mark S.   +5 more
openaire   +2 more sources