scholarly journals Lithium isotope geochemistry in the Barton Peninsula, King George Island, Antarctica

2021 ◽  
Author(s):  
Jong-Sik Ryu ◽  
Nathalie Vigier ◽  
Hye-Bin Choi ◽  
Hyoun Soo Lim ◽  
Jeonghoon Lee
Keyword(s):  
Isotope Geochemistry ◽  
Lithium Isotope ◽  
King George Island ◽  
Barton Peninsula

Isotope geochemistry of volcanic rocks from the Barton Peninsula, King George Island, Antarctica

2011 ◽  
Vol 22 (1) ◽  
pp. 40-51 ◽  
Author(s):  
Jeong Hwang ◽  
Xiangshen Zheng ◽  
Edward M. Ripley ◽  
Jong-Ik Lee ◽  
Dongbok Shin
Keyword(s):  
Isotope Geochemistry ◽  
Volcanic Rocks ◽  
King George Island ◽  
Barton Peninsula

Trophic niche of seabirds on the Barton Peninsula, King George Island, Antarctica

2021 ◽  
pp. 107443
Author(s):  
Jong-Ku Gal ◽  
Bohyung Choi ◽  
Bo-Kyung Kim ◽  
Jin-Woo Jung ◽  
Jun-Oh Min ◽  
...  
Keyword(s):  
Trophic Niche ◽  
King George Island ◽  
Barton Peninsula

Evaluating the potential of MODIS-LST for monitoring ground surface temperatures in the Maritime Antarctic (Barton Peninsula, King George Island, Antarctic). 

2021 ◽  
Author(s):  
Alejandro Corbea-Pérez ◽  
Gonçalo Vieira ◽  
Carmen Recondo ◽  
Joana Baptista ◽  
Javier F.Calleja ◽  
...  
Keyword(s):  
Surface Temperature ◽  
Land Surface Temperature ◽  
Land Surface ◽  
Ground Temperature ◽  
King George Island ◽  
Maritime Antarctic ◽  
In Situ Data ◽  
Surface Temperatures ◽  
Barton Peninsula

<p>Land surface temperature is an important factor for permafrost modelling as well as for understanding the dynamics of Antarctic terrestrial ecosystems (Bockheim et al. 2008). In the South Shetland Islands the distribution of permafrost is complex (Vieira et al. 2010) and the use of remote sensing data is essential since the installation and maintenance of an extensive network of ground-based stations are impossible. Therefore, it is important to evaluate the applicability of satellites and sensors by comparing data with in-situ observations. In this work, we present the results from the analysis of land surface temperatures from Barton Peninsula, an ice-free area in King George Island (South Shetlands). We have studied the period from March 1, 2019 to January 31, 2020 using data from the Moderate Resolution Imaging Spectroradiometer (MODIS) Land Surface Temperature (LST) and in-situ data from 6 ground temperature loggers. MOD11A1 and MYD11A1 products, from TERRA and AQUA satellites, respectively, were used, following the application of MODIS quality filters. Given the scarce number of high-quality data as defined by MODIS, all average LST with error ≤ 2K were included. Dates with surface temperature below -20ºC, which are rare in the study area, and dates when the difference between MODIS and in-situ data exceeded 10ºC were also examined. In both cases, those days on which MOD09GA/MYD09GA products showed cloud cover were eliminated. Eight in-situ ground temperature measurements per day were available, from which the one nearest to the time of satellite overpass was selected for comparison with MODIS-LST. The results obtained show a better correlation with daytime data than with nighttime data. Specifically, the best results are obtained with daytime data from AQUA (R<sup>2</sup> between 0.55 and 0.81). With daytime data, correlation between MODIS-LST and in-situ data was verified with relative humidity (RH) values provided by King Sejong weather station, located in the study area. When RH is lower, the correlation between LST and in-situ data improves: we obtained correlation coefficients between 0.6 - 0.7 for TERRA data and 0.8 - 0.9 for AQUA data with RH values lower than 80%. The results suggest that MODIS can be used for temperature estimation in the ice-free areas of the Maritime Antarctic.</p><p>References:</p><p>Bockheim, J. G., Campbell, I. B., Guglielmin, M., and López- Martınez, J.: Distribution of permafrost types and buried ice in ice free areas of Antarctica, in: 9th International Conference on Permafrost, 28 June–3 July 2008, Proceedings, University of Alaska Press, Fairbanks, USA, 2008, 125–130.</p><p>Vieira, G.; Bockheim, J.; Guglielmin, M.; Balks, M.; Abramov, A. A.; Boelhouwers, J.; Cannone, N.; Ganzert, L.; Gilichinsky, D. A.; Goryachkin, S.; López-Martínez, J.; Meiklejohn, I.; Raffi, R.; Ramos, M.; Schaefer, C.; Serrano, E.; Simas, F.; Sletten, R.; Wagner, D. Thermal State of Permafrost and Active-layer Monitoring in the Antarctic: Advances During the International Polar Year 2007-2009. Permafr. Periglac. Process. 2010, 21, 182–197.</p><p> </p><p>Acknowledgements</p><p>This work was made possible by an internship at the IGOT, University of Lisbon, Portugal, funded by the Principality of Asturias (code EB20-16).</p><p> </p>

Lithium Isotope Geochemistry

2017 ◽  
Vol 82 (1) ◽  
pp. 165-217 ◽  
Author(s):  
Sarah Penniston-Dorland ◽  
Xiao-Ming Liu ◽  
Roberta L. Rudnick
Keyword(s):  
Isotope Geochemistry ◽  
Lithium Isotope

Pygoscelis antarcticus feathers as bioindicator of trace element risk in marine environments from Barton Peninsula, 25 de Mayo (King George) Island, Antarctica

2017 ◽  
Vol 24 (11) ◽  
pp. 10759-10767 ◽  
Author(s):  
Soledad Perez Catán ◽  
Debora Bubach ◽  
Carla Di Fonzo ◽  
Laura Dopchiz ◽  
Maria Arribére ◽  
...  
Keyword(s):  
Trace Element ◽  
Marine Environments ◽  
King George Island ◽  
Pygoscelis Antarcticus ◽  
Barton Peninsula

Advances in Lithium Isotope Geochemistry

2016 ◽  
Author(s):  
Paul B. Tomascak ◽  
Tomáš Magna ◽  
Ralf Dohmen
Keyword(s):  
Isotope Geochemistry ◽  
Lithium Isotope

scholarly journals Draft Genome Sequence of the Psychrotolerant Bacterium Methylobacterium sp. Strain BTF04, Isolated from Freshwater in Antarctica

2020 ◽  
Vol 9 (21) ◽  
Author(s):  
Ahnna Cho ◽  
Yong-Joon Cho ◽  
Soyeon Kim ◽  
Ok-Sun Kim
Keyword(s):  
Genome Sequence ◽  
Draft Genome ◽  
Draft Genome Sequence ◽  
King George Island ◽  
Psychrotolerant Bacterium ◽  
Barton Peninsula

ABSTRACT Methylobacterium sp. strain BTF04, a pink-pigmented psychrotolerant bacterium, was isolated from freshwater on Barton Peninsula, King George Island, Antarctica. Here, we report the assembled draft genome sequence of Methylobacterium sp. strain BTF04.

scholarly journals Complete Genome Sequence of a Psychrotolerant Denitrifying Bacterium, Janthinobacterium svalbardensis PAMC 27463

2017 ◽  
Vol 5 (46) ◽  
Author(s):  
Yong-Joon Cho ◽  
You-Jung Jung ◽  
Soon Gyu Hong ◽  
Ok-Sun Kim
Keyword(s):  
Genome Sequence ◽  
Complete Genome Sequence ◽  
Complete Genome ◽  
Freshwater Lake ◽  
King George Island ◽  
Denitrifying Bacterium ◽  
Barton Peninsula ◽  
Rna Genes

ABSTRACT We report here the complete genome sequence of Janthinobacterium svalbardensis PAMC 27463 isolated from a freshwater lake on Barton Peninsula on King George Island, Antarctica. The genome consists of a chromosome with 6,274,078 bp which contains 5,585 genes, including 121 RNA genes.

scholarly journals Feather mites (Acariformes, Astigmata) from marine birds of the Barton Peninsula (King George Island, Antarctica), with descriptions of two new species

ZooKeys ◽  
2021 ◽  
Vol 1061 ◽  
pp. 109-130
Author(s):  
Yeong-Deok Han ◽  
Sergey V. Mironov ◽  
Jeong-Hoon Kim ◽  
Gi-Sik Min
Keyword(s):  
New Species ◽  
Dna Barcode ◽  
Mite Species ◽  
Mitochondrial Cytochrome ◽  
King George Island ◽  
Feather Mites ◽  
Marine Birds ◽  
Feather Mite ◽  
Two New Species ◽  
Barton Peninsula

We report on the first investigation of feather mites associated with birds living on the Barton Peninsula (King George Island, Antarctica). We found seven feather mite species of the superfamily Analgoidea from four host species. Two new species are described from two charadriiform hosts: Alloptes (Sternalloptes) antarcticussp. nov. (Alloptidae) from Stercorarius maccormicki Saunders (Stercorariidae), and Ingrassia chionissp. nov. (Xolalgidae) from Chionis albus (Gmelin) (Chionidae). Additionally, we provide partial sequences of the mitochondrial cytochrome c oxidase subunit I (COI), which was utilized as a DNA barcode, for all seven feather mite species.

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