Results 11 to 20 of about 16,657 (258)

Topography, ice thickness and ice volume of the glacier Pedersenbreen in Svalbard, using GPR and GPS [PDF]

Polar Research, 2014
Pedersenbreen is a small valley glacier (ca. 6 km2 in 2009), ending on land, located in north-western Spitsbergen, Svalbard. Ground-based radio-echo sounding in April 2009, using a 100-MHz commercial radar and a self-made low-frequency radar, revealed a ...
Songtao Ai, Zemin Wang, Dongchen E, Kim Holmén, Zhi Tan, Chunxia Zhou, Weijun Sun   +6 more
doaj   +1 more source

Antarctic climate variability on regional and continental scales over the last 2000 years [PDF]

Climate of the Past, 2017
Climate trends in the Antarctic region remain poorly characterized, owing to the brevity and scarcity of direct climate observations and the large magnitude of interannual to decadal-scale climate variability.
B. Stenni, B. Stenni, M. A. J. Curran, M. A. J. Curran, N. J. Abram, N. J. Abram, A. Orsi, S. Goursaud, S. Goursaud, V. Masson-Delmotte, R. Neukom, H. Goosse, D. Divine, D. Divine, T. van Ommen, T. van Ommen, E. J. Steig, D. A. Dixon, E. R. Thomas, N. A. N. Bertler, N. A. N. Bertler, E. Isaksson, A. Ekaykin, A. Ekaykin, M. Werner, M. Frezzotti   +25 more
doaj   +1 more source

Diversity and distribution patterns in high southern latitude sponges. [PDF]

PLoS ONE, 2012
Sponges play a key role in Antarctic marine benthic community structure and dynamics and are often a dominant component of many Southern Ocean benthic communities.
Rachel V Downey, Huw J Griffiths, Katrin Linse, Dorte Janussen   +3 more
doaj   +1 more source

Antarctic Basal Water Storage Variation Inferred from Multi-Source Satellite Observation and Relevant Models

Remote Sensing, 2022
Antarctic basal water storage variation (BWSV) refers to mass changes of basal water beneath the Antarctic ice sheet (AIS). Identifying these variations is critical for understanding Antarctic basal hydrology variations and basal heat conduction, yet ...
Jingyu Kang, Yang Lu, Yan Li, Zizhan Zhang, Hongling Shi   +4 more
doaj   +1 more source

Correlation and interaction between temperature and freeze-thaw in representative regions of Antarctica

International Journal of Digital Earth, 2022
As the most sensitive and direct indicator of global climate change, the freezing and thawing of the Antarctic ice sheet is of great significance for research on surface mass and energy balance.
Dong Liang, Huadong Guo, Qing Cheng, Lu Zhang, Lingyi Kong   +4 more
doaj   +1 more source

Gene Transfer Agent g5 Gene Reveals Bipolar and Endemic Distribution of Roseobacter Clade Members in Polar Coastal Seawater

Diversity, 2022
The Roseobacter clade represents one of the most abundant groups of marine bacteria and plays important biogeochemical roles in marine environments. Roseobacter genomes commonly contain a conserved gene transfer agent (GTA) gene cluster.
Yin-Xin Zeng, Hui-Rong Li, Wei Luo
doaj   +1 more source

Decoupling of the Surface and Bottom‐Intensified Antarctic Slope Current in Regions of Dense Shelf Water Export

Geophysical Research Letters, 2023
The Antarctic Slope Current is guided by the topographic gradient of the Antarctic continental slope and creates a dynamical barrier between the continental shelf and the open ocean.
Wilma G. C. Huneke, Adele K. Morrison, Andrew McC. Hogg   +2 more
doaj   +1 more source

An evaluation of Antarctic sea-ice thickness from the Global Ice-Ocean Modeling and Assimilation System based on in situ and satellite observations [PDF]

The Cryosphere, 2022
Antarctic sea ice is an important component of the Earth system. However, its role in the Earth system is still unclear due to limited Antarctic sea-ice thickness (SIT) data. A reliable sea-ice reanalysis can be useful to study Antarctic SIT and its role
S. Liao, H. Luo, J. Wang, Q. Shi, J. Zhang, Q. Yang   +5 more
doaj   +1 more source

Global biogeographic patterns in bipolar moss species [PDF]

Royal Society Open Science, 2017
A bipolar disjunction is an extreme, yet common, biogeographic pattern in non-vascular plants, yet its underlying mechanisms (vicariance or long-distance dispersal), origin and timing remain poorly understood.
E. M. Biersma, J. A. Jackson, J. Hyvönen, S. Koskinen, K. Linse, H. Griffiths, P. Convey   +6 more
doaj   +1 more source

Low genetic diversity in Antarctic populations of the lichen-forming ascomycete Cetraria aculeata and its photobiont [PDF]

Polar Research, 2012
Lichens, symbiotic associations of fungi (mycobionts) and green algae or cyanobacteria (photobionts), are poikilohydric organisms that are particularly well adapted to withstand adverse environmental conditions.
Stephanie Domaschke, Fernando Fernández-Mendoza, Miguel A. García, María P. Martín, Christian Printzen   +4 more
doaj   +1 more source