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1,337 results for “antarctica”
FIGURE 12 in Benthic hydroids (Cnidaria, Hydrozoa) from the Ross Sea (Antarctica) collected by the New Zealand Antarctic expedition BioRoss 2004 with RV Tangaroa
FIGURE 12. Antarctoscyphus admirabilis Peña Cantero, Svoboda & Vervoort, 1999: A, branch internode with hydrotheca. Symplectoscyphus aggregatus (Jäderholm, 1917): B, fragment of branch with hydrothecal arrangement and shape. Symplectoscyphus anae Peña Cantero, Svoboda & Vervoort, 2002: C, internode with hydrotheca. Symplectoscyphus densus sp. nov.: D–E, fragment of branch with hydrothecal arrangement and shape; Symplectoscyphus exochus Blanco, 1982: F, internode with hydrotheca. Symplectoscyphus liouvillei (Billard, 1914): G, internode with hydrotheca. Symplectoscyphus vanhoeffeni Totton, 1930: H, internode with hydrotheca. Symplectoscyphus weddelli Peña Cantero, Svoboda & Vervoort, 2002: I, internode with hydrotheca. Symplectoscyphus sp.1: J, internode with hydrotheca. Symplectoscyphus sp.2: K, internode with hydrotheca. (A from Stn 17; B from Stn 112; C from Stn 126; D from Stn 7 (holotype); E from Stn 97 (paratype); F from Stn 67; G from Stn 150; H from Stn 130; I, from Stn 53; J from Stn 7; K from Stn 25). Scale bar: 250 µm.
FIGURE 14 in Benthic hydroids (Cnidaria, Hydrozoa) from the Ross Sea (Antarctica) collected by the New Zealand Antarctic expedition BioRoss 2004 with RV Tangaroa
FIGURE 14. Holotype of Symplectoscyphus densus sp. nov.: A, fragment of the stem with arrangement and shape of hydrothecae; B, idem, also with branch origin; C–D, hydrothecae; E, detail of hydrothecal aperture. Paratype of Symplectoscyphus densus sp. nov.; F, fragment of branch with arrangement and shape of hydrothecae; G–H, hydrothecae. (A–E from Stn 7; F–H from Stn 97). Scale bar: 200 µm (A–B, F), 100 µm (C–D, G–H), 50 µm (E).
FIGURE 1 in Benthic hydroids (Cnidaria, Hydrozoa) from the Ross Sea (Antarctica) collected by the New Zealand Antarctic expedition BioRoss 2004 with RV Tangaroa
FIGURE 1. Area of study (red circle indicating the Ross Sea, red square the area studied during the BioRoss 2004 survey, numbers referring to previous studies).
FIGURE 10. Staurotheca compressa Briggs, 1938 in Benthic hydroids (Cnidaria, Hydrozoa) from the Ross Sea (Antarctica) collected by the New Zealand Antarctic expedition BioRoss 2004 with RV Tangaroa
FIGURE 10. Staurotheca compressa Briggs, 1938: A, hydrotheca. Staurotheca densa Peña Cantero & Vervoort, 2003: B, hydrotheca. Staurotheca dichotoma Allman, 1888: C, hydrotheca. Staurotheca gracilis sp. nov.: D, basal part of a branch with hydrothecal arrangement; E–G, hydrothecae. Staurotheca nonscripta Peña Cantero, Svoboda & Vervoort, 1997: I, hydrotheca. (A, from Stn 178; B from Stn 67; C, from Stn 140; D–E, G–H from the holotype; F from the paratype; I from Stn 148). Scale bar: 250 µm (A–C, E–H), 500 µm (D).
FIGURE 2 in Benthic hydroids (Cnidaria, Hydrozoa) from the Ross Sea (Antarctica) collected by the New Zealand Antarctic expedition BioRoss 2004 with RV Tangaroa
FIGURE 2. Bimeria corynopsis Vanhöffen, 1910: A, polyp with swollen tentacle ends; B, nematocysts (microbasic euryteles and desmonemes). Rhizorhagium antarcticum (Hickson & Gravely, 1907): C, discharged microbasic eurytele. Hydractinia sp.: D, polyp. (A, D from Stn 139; B from Stn 140; C from Stn 130). Scale bar: 200 µm (A, D), 10 µm (B–C).
FIGURE 11 in Benthic hydroids (Cnidaria, Hydrozoa) from the Ross Sea (Antarctica) collected by the New Zealand Antarctic expedition BioRoss 2004 with RV Tangaroa
FIGURE 11. Staurotheca pachyclada (Jäderholm, 1904): A–B, hydrothecae. Staurotheca polarsterni Peña Cantero, Svoboda & Vervoort, 1997: C–E, hydrothecae. Staurotheca sp.: F–I hydrothecae. (A from Stn 124; B from Stn 17; C–E from Stn 19; F–H from Stn 53; I from Stn 67). Scale bar: 250 µm.
FIGURE 7 in Benthic hydroids (Cnidaria, Hydrozoa) from the Ross Sea (Antarctica) collected by the New Zealand Antarctic expedition BioRoss 2004 with RV Tangaroa
FIGURE 7. Cnidome of Tubularia longstaffi Hickson & Gravely, 1907: A, larger stenoteles (arrow); B, smaller stenotele (arrow); C, haploneme (arrow); D, haploneme (arrow). (All images from Stn 150). Scale bar: 10 µm.
FIGURE 6 in Benthic hydroids (Cnidaria, Hydrozoa) from the Ross Sea (Antarctica) collected by the New Zealand Antarctic expedition BioRoss 2004 with RV Tangaroa
FIGURE 6. Tubularia longstaffi Hickson & Gravely, 1907: A, fragment of hydrocaulus; B, distal part of hydrocaulus and polyp; C, polyp and gonophores (lateral view); D, polyp and gonophores (upper view). (All images from Stn 105). Scale bar: B: 5 mm; A, C, D: 1 mm.
Supplementary material 1 from: Zehnpfennig JR, Mahon AR (2023) Austropallene halanychi sp. nov., a new species of sea spider (Pycnogonida, Callipallenidae) from the Ross Sea, Antarctica. ZooKeys 1185: 163-180. https://doi.org/10.3897/zookeys.1185.108286
All species used in phylogenetic analyses for this study, which phylogenetic analysis the data was used for, and the correlated GenBank accession numbers
Datasets for "Where the White Continent is blue: deep learning locates bare ice in Antarctica"
<p>This archive provides datasets related to the following publication:</p> <p>V. Tollenaar, H. Zekollari, F. Pattyn, M. Rußwurm, B. Kellenberger, S. Lhermitte, M. Izeboud, D. Tuia, Where the White Continent is blue: deep learning locates bare ice in Antarctica. Geophysical Research Letters, 50, e2023GL106285 (2024). <a href="https://doi.org/10.1029/2023GL106285">DOI: 10.1029/2023GL106285</a></p> <p>Contact: Veronica Tollenaar, Veronica.Tollenaar@ulb.be</p> <p>Users should cite the original publication when using all or part of the data.</p> <p>About the datasets: it includes the seven-band MODIS composite ("merged_bands_composite3031080910.tif"), the outlines of our set of training ("train_squares.zip"), validation ("validation_squares.zip"), and testing regions ("test_squares.zip"), the predictions on the presence of blue ice ("BIA_map.nc"), the corresponding uncertainty estimates ("BIA_map.nc"), and the smoothed blue ice area outlines ("smoothed_BIAs.zip"). References to the literature are provided in the corresponding manuscript.</p> <p>- BIA_map.nc: netcdf in which the band "mean" represents the predictions on the presence of blue ice, and the band "std" the corresponding uncertainty estimates, in EPSG:3031<br>- handlabels_sqXXX.zip: archived .cpg, .bdf, .prj, .shp, and .shx files of the handlabeled blue ice areas (Figures S3 and S4) in the respective squares (indicated in the files "xxxx_squares.zip")<br>- merged_bands_composite3031080910.tif: 7-band tif file of the 7-band MODIS composite (Figure S1, Text S1)<br>- smoothed_BIAs.zip: archived .cpg, .bdf, .prj, .shp, and .shx files of the smoothed outlines of our BIA predictions (Text S5)<br>- xxxx_squares.zip: archived .cpg, .bdf, .prj, .shp, and .shx files of the outlines of training, validation, and testing regions (Figure S2)</p>
Fig. 7. Myosotis antarctica subsp. antarctica. Illustration reproduced from Bot. Antarct. Voy. I in Taxonomic revision of the southern hemisphere pygmy forget-me-not group (Myosotis; Boraginaceae) based on morphological, population genetic and climate-edaphic niche modelling data
Fig. 7. Myosotis antarctica subsp. antarctica. Illustration reproduced from Bot. Antarct. Voy. I. (Fl. Antarct.) Part I, plate 38 (Hooker 1844). Illustration by W. H. Fitch. This image is in the public domain, downloaded from the Biodiversity Heritage Library (https:// www.biodiversitylibrary.org/page/13448452#page/81/ mode/1up, accessed 8 June 2021). Draft pencil drawings for this figure are attached to the type specimen of M. antarctica (K0007878799; visible online at http:// apps.kew.org/herbcat/getImage.do?imageBarcode= K000787899, accessed 8 June 2021), which was collected by J. D. Hooker from Campbell Island.
Supporting Dataset for "Synoptic Moisture Intrusion Provided Heavy Isotope Precipitations in Inland Antarctica during the Last Glacial Maximum"
<p><strong>Data used in <a href="https://doi.org/10.1029/2024GL108191" target="_blank" rel="noopener">Kino et al. (2024, GRL)</a> are stored as zip and CSV files.</strong></p> <ul> <li>All data (except for Antarctica_LGM_Proxies.csv) resulted from an isotope-enabled atmospheric general circulation model named "iso-MIROC5" <a href="https://doi.org/10.1029/2018JD029463" target="_blank" rel="noopener">(Okazaki and Yoshimura, 2019, JGR)</a>.</li> <li>Antarctica_LGM_Proxies.csv resulted from Table 1 of <a href="https://www.nature.com/articles/s41467-018-05430-y" target="_blank" rel="noopener">Werner et al. (2018, Nat. Com.)</a> and <a href="https://www.usap-dc.org/view/dataset/601239" target="_blank" rel="noopener">Steig et al. (2020, USAP-DC)</a>.</li> <li>The definition of southward moisture fluxes proposed by <a href="https://journals.ametsoc.org/view/journals/clim/25/21/jcli-d-11-00665.1.xml" target="_blank" rel="noopener">Newman et al. (2012, JC)</a> was adopted.<br>The module of <a href="https://gmd.copernicus.org/articles/13/1179/2020/" target="_blank" rel="noopener">ESMValTool (Righi et al., 2020, GMD)</a> was customized to calculate the Eady growth rate.</li> <li>Scripts are available in a <a href="https://github.com/kanonundgigue/kino2024grl" target="_blank" rel="noopener">GitHub repository</a>.</li> </ul> <p>Sources are available at <a href="https://github.com/kanonundgigue/kino2024grl">https://github.com/kanonundgigue/kino2024grl</a>.</p> <p>If you use data for your work, please ask the author to be a co-author or cite the paper according to data contributions.</p>
Analysis of aerosol optical depth variation at Zhongshan Station in Antarctica
Open the record for dataset details and reuse information.
Data and code for Recent observations of Thwaites Glacier, West Antarctica are consistent with high rates of loss in next 50 years
<p><span>This repository contains the code and input files needed for running the MITgcm and ISSM experiments in this manuscript, and the relevant outputs from the experiments.</span></p> <p><span>1. STREAMICE</span></p> <p><span>the STREAMICE folder contains the following subfolders:</span></p> <p><span>code: contains all MITgcm source files for calibration experiments that are not included in the MITgcm repository</span></p> <p><span>code_proj: similar to code/ but for projection experiments</span></p> <p><span>model_input: contains subdirectories containing binary inputs and parameter files for all experiments in the manuscript</span></p> <p><span>model_output: output from each projection experiment is contained in a .mat file with the following arrays:</span></p> <ul> <li><span> X, Y: x-and y-coordinates in WGS 84 / Antarctic Polar Stereographic (EPSG:3031)</span></li> <li><span> BED: bed elevation (m)</span></li> <li><span> BETA: \beta described in the manuscript (units: Pa^(1/2) (m/a)^{-1/6})</span></li> <li><span> BGLEN: \overline{B} described in the manuscript (units: Pa^(1/2) a^{-1/6})</span></li> <li><span> SURF: ice surface elevation (m)</span></li> <li><span> THICK: ice thickness (m)</span></li> <li><span> THICK0: initial ice thickness (m)</span></li> <li><span> VX: x-velocity (m/a)</span></li> <li><span> VY: y-velocity (m/a)</span></li> <li><span> times:<span> </span>time in years after 2004</span></li> </ul> <p><span>checkpoint 68y of the MITgcm source code (mitgcm.org) was used for this study.</span></p> <p><span>m1qn3 (https://who.rocq.inria.fr/Jean-Charles.Gilbert/modulopt/optimization-routines/m1qn3/m1qn3.html) was used for optimisation.</span></p> <p><span>details of how to compile and run the forward and adjoint STREAMICE code can be found at https://mitgcm.readthedocs.io/en/latest/</span></p> <p><span>-------------------------------------------</span></p> <p><span>2. ISSM</span></p> <p><span>runme.m contains all ISSM instructions to run the experiments.</span></p> <p><span>output/ contains mat files for all experiments, with array descriptions as above.</span></p> <p><span>ISSM source and documentation can be found at https://issm.jpl.nasa.gov/.</span></p>
FIGURE 3. Lanceola sphaerica Vinogradov. 1970 in Redescription of two rare, deep-sea species of hyperiidean amphipod, Lanceola loveni antarctica Vinogradov, 1962 and L. sphaerica Vinogradov, 1970 (Crustacea: Amphipoda: Hyperiidea: Lanceolidae)
FIGURE 3. Lanceola sphaerica Vinogradov. 1970: female 4.5 mm (USNM 1090248), Amundsen Sea, 1391 m. Scale bars: 0.5 mm (habitus); 0.2 mm (remainder).
FIGURE 1. Lanceola loveni antarctica Vinogradov, 1962 in Redescription of two rare, deep-sea species of hyperiidean amphipod, Lanceola loveni antarctica Vinogradov, 1962 and L. sphaerica Vinogradov, 1970 (Crustacea: Amphipoda: Hyperiidea: Lanceolidae)
FIGURE 1. Lanceola loveni antarctica Vinogradov, 1962: male 25 mm (USNM 1090255), Strait of Magellan, 458–732 m. Scale bars: 1.0 mm (G1 & G2); 2.0 mm (remainder). Enlargements all same magnification.
FIGURE 7. Culeolus likae. A in Abyssal ascidians (Chordata, Tunicata) from the Weddell Sea, Antarctica, including a new Styela species and stomach content identifications
FIGURE 7. Culeolus likae. A: individual; B: vesicles of the tunic; C: internal anatomy (without branchial sac).
FIGURE 4 in Abyssal ascidians (Chordata, Tunicata) from the Weddell Sea, Antarctica, including a new Styela species and stomach content identifications
FIGURE 4. Styela andeepensis sp. nov.. A: individual attached to the tunic of Culeolus suhmi; B: scheme showing internal anatomy (without branchial sac).
FIGURE 1 in Abyssal ascidians (Chordata, Tunicata) from the Weddell Sea, Antarctica, including a new Styela species and stomach content identifications
FIGURE 1. Study area with the locations where the samples were collected (stations 7, 9, 13, 14, 16).
FIGURE 6. Culeolus anonymus. A in Abyssal ascidians (Chordata, Tunicata) from the Weddell Sea, Antarctica, including a new Styela species and stomach content identifications
FIGURE 6. Culeolus anonymus. A: individual; B: vesicles of the tunic; C: internal anatomy (without branchial sac).
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.