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47 results for “West Antarctic”
Supplementary material 1 from: Schimani K, Abarca N, Skibbe O, Mohamad H, Jahn R, Kusber W-H, Campana GL, Zimmermann J (2023) Exploring benthic diatom diversity in the West Antarctic Peninsula: insights from a morphological and molecular approach. Metabarcoding and Metagenomics 7: e110194. https://doi.org/10.3897/mbmg.7.110194
Statistic results
High benthic community respiration and ecosystem response to phytodetrital input in a sub-polar fjord on the West Antarctic Peninsula
<p><span>Glaciomarine fjords dominate the coastal margin of the West Antarctic Peninsula. Studies in similar habitats in the Arctic have shown that benthic biodiversity and ecosystem functioning in inner and middle fjord basins are reduced by turbidity and sedimentation disturbance caused by climate-warming-enhanced glacial melting. In contrast, the inner and middle fjord basins along the West Antarctic Peninsula are characterised as productivity and biodiversity hotspots, but benthic ecosystem functions remain unevaluated.</span> <span>In 2015-2016, we conducted sediment-respiration and <sup>13</sup>C pulse-chase experiments to assess benthic ecosystem functions along a five-station transect at ~500-600 m depths from the inner Andvord Bay fjord, through to Gerlache Strait, and onto the open continental shelf. Incubation samples from the inner and middle basins of Andvord Bay showed peaks in background seafloor respiration, benthic biomass, and uptake of labeled algal biomass compared to more outlying stations; the continental shelf exhibited the lowest levels of these variables, as well as dissolved inorganic carbon production. Macrofaunal community uptake was responsible for most of the C processing in the inner and middle parts of the fjord (>45%) while dissolved inorganic carbon was the dominant repository of processed C near the fjord mouth and on the continental shelf (>80%). The inner parts of Andvord Bay are hotspots of benthic C-cycling and metabolism, in addition to biodiversity. Ongoing climate warming is likely to negatively impact these inner-fjord hotspots by increasing meltwater input and sedimentation disturbance, yielding a reduction in the input and recycling of labile detritus at the seafloor in the inner-middle fjord.</span></p>
Data for Widespread seasonal speed-up of west Antarctic Peninsula glaciers from 2014-2021
<p>Data made available to support "Widespread seasonal speed-up of west Antarctic Peninsula glaciers from 2014-2021" Wallis et al. 2023 (accepted). For details, see publication.</p> <p>Data included:</p> <p>Calving front positions for 8 glaciers 2015-2021.</p> <p>Ice speed time series for 105 glaciers 2014-2021, raw measurements and smoothed.</p> <p>Glacier drainage basin ice speed measurements for 8 glaciers 2014-2021.</p> <p>RACMO 2.3p2 5.5km Antarctic Peninsula data: snowfall, precipitation, snowmelt, runoff, smb.</p> <p>All geospatial definitions.</p> <p>Version 2 was updated to include a mean ice speed map.</p>
Data for Ocean warming drives rapid dynamic activation of marine-terminating glacier on the west Antarctic Peninsula
<p>Data made available to support "Ocean warming drives rapid dynamic activation of marine-terminating glacier on the west Antarctic Peninsula" Wallis et al. 2023 (accepted). For details, see publication.</p><p>Data included:</p><p>Altimetry data for Cadman, Funk and Lever Glaciers.</p><p>Bathymetric data for Beascochia Bay.</p><p>Calving fronts 1984-2022 for Cadman Glacier.</p><p>Co-registered DEMs.</p><p>All geometric definitions.</p><p>Ice velocity time-series for Cadman, Funk and Lever Glaciers.</p><p>Ice discharge time-series for Cadman Glacier.</p><p>Ocean reanalysis data, oceanographic station data.</p><p>Ice velocity Kalman filter code.</p>
Data from oceanographic moorings deployed on the Antarctic Continental Shelf (and inshore) west of the Antarctic Peninsula as part of the Palmer Long Term Ecological Research Project (PAL LTER), 2007 - 2017.
Oceanographic moorings have been deployed beginning in January 2007 on the Antarctic Continental Shelf (and inshore) west of the Antarctic Peninsula as part of the Palmer Long Term Ecological Research Project (PAL LTER). The moorings have been located at several sites, each deployment lasting typically just under one year, as moorings are recovered at the beginning of the PAL LTER annual January cruise and deployed at the end of the cruise. Some sites have had mutliple deployments (ie, multiple years) while others have a mooring for only one year. Any given year had between 1 and 5 deployments. The moorings were subsurface typically with tops about 50 meters below the surface attempting to always sample the winter mixed layer and below. Each mooring consisted of a thermister string designed to well-capture the vertical temperature structure and betwee 1 and 7 current meters designed to capture the main features of the current structure. A conductivity cell was deployed infrequently to obtain salinity at a single depth.
Initial condition and forcing files for the circulation and sea ice MITgcm model for the West Antarctic Peninsula
<p>This dataset contains the initial condition, grid and forcing files used to run a circulation and sea ice model for the West Antarctic Peninsula (WAP), in hindcast experiments that simulated the period between 1980-2014. The files include glacial runoff, atmospheric forcings, boundary conditions, shelf ice files and grid. </p>
Data for "Century-long West Antarctic Snow Accumulation Changes Induced by Tropical Teleconnections"
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