Found 12760 items
3 February, 2023 by Alex Burton-Johnson, Teal Riley
The LeMay Group accretionary complex of Alexander Island (Antarctic Peninsula) comprises a 4 km thick succession of variably deformed turbidites associated with thrust slices of ocean floor basalts. The depositional…2 February, 2023 by Victoria Peck
Planktic foraminifera test iodine to calcium ratios represent an emerging proxy method to assess subsurface seawater oxygenation states. Several core-top studies show lower planktic foraminifera I/Ca ratios in locations with…Read more on Planktic foraminifera iodine/calcium ratios from plankton tows
2 February, 2023 by Paul Holland, Ryan Patmore
The ice shelf-ocean boundary current has an important control on heat delivery to the base of an ice shelf. Climate and regional models that include a representation of ice shelf…1 February, 2023 by Kevin Hughes, Peter Convey
Intensive human exploitation of the Antarctic fur seal (Arctocephalus gazella) in its primary population centre on sub-Antarctic South Georgia, as well as on other sub-Antarctic islands and parts of the…1 February, 2023 by Norman Ratcliffe
Anthropogenic climate change is resulting in spatial redistributions of many species. We assessed the potential effects of climate change on an abundant and widely distributed group of diving birds, Eudyptes…31 January, 2023 by Teal Riley
Lithic technologies dominate understanding of early humans, yet natural processes can fracture rock in ways that resemble artefacts made by Homo sapiens and other primates. Differentiating between fractures made by…30 January, 2023 by Hannah Cubaynes, Penny Clarke, Peter Fretwell
The use of very high-resolution (VHR) optical satellites is gaining momentum in the field of wildlife monitoring, particularly for whales, as this technology is showing potential for monitoring the less…Read more on Annotating very high-resolution satellite imagery: A whale case study
30 January, 2023 by Mark Clilverd
The lower thermosphere-ionosphere (LTI) is a key transition region between Earth’s atmosphere and space. Interactions between ions and neutrals maximize within the LTI and in particular at altitudes from 100…28 January, 2023 by Jack Humby, Liz Thomas
Per- and polyfluoroalkyl substances (PFAS) are a group of persistent organic contaminants of which some are toxic and bioaccumulative. Several PFAS can be formed from the atmospheric degradation of precursors…27 January, 2023 by Emma Young, Michael Meredith
A high-resolution ocean model is used to characterize the variability of the shelf circulation and cross-shelf transport around the South Georgia island (SG). The time-mean shelf circulation consists of a…Read more on Variability of the shelf circulation around South Georgia, Southern Ocean
25 January, 2023 by Neil Cobbett, Tracy Moffat-Griffin
The mesosphere/lower thermosphere (MLT, 80–100 km) region is an important boundary between Earth's atmosphere below and space above and may act as a sensitive indicator for anthropogenic climate change. Existing…25 January, 2023 by Alexander Bradley
We study the bendocapillary instability of a liquid droplet that part fills a flexible walled channel. Inspired by experiments in which a periodic pattern emerges as droplets of liquid are…Read more on Bendocapillary Instability of Liquid in a Flexible-Walled Channel
24 January, 2023 by Liz Thomas
A new meteorological dataset derived from records of Antarctic automatic weather stations (here called the AntAWS dataset) at 3 h, daily and monthly resolutions including quality control information is presented here.…Read more on The AntAWS dataset: a compilation of Antarctic automatic weather station observations
23 January, 2023 by Kevin Newsham, Peter Convey
The nutrient-poor soils of Antarctica are sensitive to change. Recent increases in the number of anthropogenic introductions mean that understanding the impact of non-native species on Antarctic soils is pertinent,…23 January, 2023 by James Smith
Understanding ice stream dynamics over decadal to millennial timescales is crucial for improving numerical model projections of ice sheet behaviour and future ice loss. In marine-terminating settings, ice shelves play…20 January, 2023 by Jasmine Lee
Antarctic Specially Protected Areas (ASPAs) are a key regulatory mechanism for protecting Antarctic environmental values. Previous evaluations of the effectiveness of the ASPA system have focused on its representativeness and…Read more on Evaluating the conservation impact of Antarctica’s protected areas
16 January, 2023 by Kevin Hughes, Peter Convey, Rachel Cavanagh
Climate change is increasingly affecting Antarctica and the rest of the world. Urgent policy responses are needed to mitigate its associated impacts. Engagement of the Antarctic Treaty Consultative Meeting (ATCM),…15 January, 2023 by Mervyn Freeman
Auroral zones are regions where, in an average sense, aurorae due to solar activity are most likely spotted. Their shape and, similarly, the geographical locations most vulnerable to extreme space…12 January, 2023 by Dieter Tetzner, Teal Riley
Over the last few decades, numerous geological studies have been carried out in the South Shetland Islands, which have greatly contributed to a better understanding of its geological evolution. However,…Read more on The South Shetland Islands, Antarctica: unified lithostratigraphy and geological map
12 January, 2023 by Geraint Tarling, Kate Hendry, Petra Ten Hoopen, Sally Thorpe
We present a database from substantial collections of macronutrient data made on 20 oceanographic cruises, primarily from around the island of South Georgia and the Scotia Sea. This sector of…