Find research datasets worth reusing

Fig. 7. The camenellan tommotiids from from the Cambrian Series 2, Stages 3, 4 in Camenellan tommotiids from the Cambrian Series 2 of East Antarctica: Biostratigraphy, palaeobiogeography, and systematics

Fig. 7. The camenellan tommotiids from from the Cambrian Series 2, Stages 3, 4, Shackleton Limestone, Transantarctic Mountains, East Antarctica. Dailyatia braddocki Evans and Rowell, 1990, Churchill Mountains (A, B), Dailyatia decobruta Betts in Betts et al., 2019, Holyoake Range (C–F), and Dailyatia cf. odyssei, Holyoake Range (G–I). A. C sclerite, NRM X10001, ventral view (A1), detail showing fold in the margin of the ventral field (A2). B. Sclerite of unknown chirality, NRM X10002, dorsal view (B1), detail showing apex (B2). C. Dextral C sclerite, KUMIP 585071, details showing micro-ornament on the anterior-lateral (C1) and the posterior (C3) fields, apical view (C2). D. Dextral C sclerite, KUMIP 585072, apical view (D1), view of proximal edge and dorsal field (D2). E. Sclerite of unknown chirality, KUMIP 585073, oblique view of ventral field (E1), view of apical area showing perforated apex (E2). F. Sclerite of unknown chirality, KUMIP 585074, dorsal (F1) and oblique apical (F2) views. G. Dextral C sclerite, NRM X10003, view of broken dorsal field (G1), detail showing fine growth series (G2), apex (G3), oblique basal view showing plicae at distal edge (G4). H. Sinistral C sclerite, NRM X10004, apical view (H1), oblique view of distal edge and part of ventral field (H2). I. Unknown sclerite type, NRM X10005, ventral view (I1), detail showing fine growth series (I2). Scale bars 200 µm, except E2, 50 µm.

Fig. 4 in Camenellan tommotiids from the Cambrian Series 2 of East Antarctica: Biostratigraphy, palaeobiogeography, and systematics

Fig. 4. The camenellan tommotiid Dailyatia icari sp. nov. A sclerites from the lower Cambrian Schneider Hills limestone, Schneider Hills, Argentina Range, Antarctica. A. KUMIP 585054, view of anterior field (A1), enlarged view of the anterior apical area (A2), oblique view of the lateral field (A3), apical view with anterior to the top (A4). B. KUMIP 585055, anterior field of broken sclerite. C. KUMIP 585056 anterior field of broken sclerite. D. KUMIP 585057, view of anterior field (D1), apical view with anterior to the top (D2), lateral view (D3). E. KUMIP 585058, view of anterior field (E1), apical view with anterior to the top (E2). Scale bars 200 µm.

Fig. 3 in Camenellan tommotiids from the Cambrian Series 2 of East Antarctica: Biostratigraphy, palaeobiogeography, and systematics

Fig. 3. Palaeobiogeographic maps of the distribution of Dailyatia and other camenellan tommotiids from East Gondwana (dark grey). New occurrences described in this paper in bold. Maps show the Cambrian (A) Terreneuvian Series to basal Series 2, Stage 3 (i.e., upper range of the Micrina etheridgei Zone for South Australia, Betts et al. 2016, 2017) and (B) Series 2 (from the base of the Dailyatia odyssei Zone for South Australia, Betts et al. 2016, 2017). Data for previous occurrences: 1 Laurie 1986; 2 Skovsted et al. 2015; 3 Betts et al. 2016; 4 Betts et al. 2017; 5 Betts et al. 2019; 6 Evans and Rowell 1990; 7 Wrona 2004. Abbreviations: CTM, Central Transantarctic Mountains; KGI, King George Island; AR, Argentina Range. Map adapted from Torsvik and Cocks (2013) and Yang et al. (2015).

Fig. 9. The camenellan tommotiid from the Cambrian Series 2, Stages 3, 4 in Camenellan tommotiids from the Cambrian Series 2 of East Antarctica: Biostratigraphy, palaeobiogeography, and systematics

Fig. 9. The camenellan tommotiid from the Cambrian Series 2, Stages 3, 4, Shackleton Limestone, Transantarctic Mountains, East Antarctica. Dailyatia sp. 1, C sclerites and indeterminate fragments, Holyoake Range and Churchill Mountains (A–G) and Dailyatia braddocki Evans and Rowell, 1990, Churchill Mountains (H, I). A. Dextral C sclerite, NRM X10013, apical view (A1), dorsal field (A2), proximal edge (A4), distal edge (A3), ventral field ( A5), detail showing broken apex (A6). B. Dextral C sclerite, NRM X10014, oblique view of distal edge and dorsal field (B1), oblique view of proximal edge and ventral field (B2), and apical view (B3). C. Sinistral C sclerite, NRM X10015, apical view (C1), oblique view of proximal edge and dorsal →

Fig. 6 in Camenellan tommotiids from the Cambrian Series 2 of East Antarctica: Biostratigraphy, palaeobiogeography, and systematics

Fig. 6. The camenellan tommotiid Dailyatia icari sp. nov. C2 sclerites from the lower Cambrian Schneider Hills limestone, Schneider Hills, Argentina Range, East Antarctica. A. KUMIP 585068, apical (A1), oblique lateral (A2), ventral (A3), lateral (A4), and dorsal (A5) views, detail of pustulose ornament on the central surface of A1 (A6). B. KUMIP 585069, apical (B1), lateral (B2), and ventral (B3) views. C. KUMIP 585070, apical (C1), lateral-dorsal (C2), ventral (C3), lateral (C4), and dorsal (C5) views. Scale bars 200 µm, except A6, 100 µm.

opencc-by-4.0Jul 2024View details →

A compilation of beryllium-isotope, element, and grainsize data from sediments sampled from Prydz Bay and beneath Amery Ice Shelf, East Antarctica

All tables are included in a single .xlsx file across three sheets. Each sheet includes sample information data: expedition and sample location information, reference to corresponding method section in text, and a reference to the source of the method employed for different procedures, or the reference to source data. Footnotes are used where necessary to explain a component of a table. Supplementary Table 1: All beryllium data used for Sequential, Grainsize, Partial, and Total experiments described in text. 10Be concentration and corresponding 1-sigma (10^8 at/g), 9Be concentration and corresponding 1-sigma (10^15 at/g), and the 10Be/9Be ratio and corresponding 1-sigma (10^-8 at/at). Supplementary Table 2: Element concentrations (µg/g) from samples across open marine and sub-ice shelf environments and their resultant enrichment factors (EF). Enrichment factors calculated using in text Equation 1. Estimated crustal abundance and ratio displayed below the data table. Supplementary Table 3:  Grainsize of samples used in this study.    This research was supported by the Australian Research Council Special Research Initiative, Australian Centre for Excellence in Antarctic Science (Project Number SR200100008).

opencc-by-4.0Mar 2019View details →

Snow properties measurements (in situ & retrived from satellite) at Dome C, East Antarctica Plateau

The dataset contains the data inputs for the electromagnetic model: <ul> <li>the snow density profile down to 20 m depth (measured in 2010)</li> <li>the snow SSA profile down to 20 m depth (measured in 2010)</li> <li>the snow temperature profile down to 20 m depth (measured from 1 December 2006 to 4 October 2011)</li> </ul> The dataset contains also the data retrieved from satellite: <ul> <li>the retrieved surface snow density from AMSR-E satellite (obtained from 18 June 2002 to 4 October 2011)</li> </ul> The dataset contains finally the data measured in situ to compare with the data retrieved from satellite: <ul> <li>the surface snow density from CALVA program (measured from 3 February 2010 to 4 October 2011)</li> <li>the surface snow density from PNRA program measured in snow pits (measured from 18 December 2007 to 4 October 2011)</li> <li>the surface snow density from PNRA program measured next to stakes (measured from 9 May 2008 to 4 October 2011)</li> </ul>

opencc-by-4.0Apr 2023View details →

Dataset - "Ice core evidence for a 20th century increase in surface mass balance in coastal Dronning Maud Land, East Antarctica"

We provide in this dataset the isotopic and ionic records from a 120 m-long ice core drilled at the summit of Derwael ice rise (70°14'44.88'' S, 26°20'5.64'' E) situated in coastal Dronning Maud Land, East Antarctica. Ions concentrations (Na+, MSA, Cl-, SO42- and NO3-) and water stable isotopes (δ18O, δD and d-excess) are presented for the top 103 meters (corresponding to 1815 and the Tambora eruption) with a continuous record for the water stable isotopes and discontinuous sections for ions concentrations. A complementary database “Annual layer thicknesses and age-depth (oldest estimate) of Derwael Ice Rise (IC12), Dronning Maud Land, East Antarctica” with age model and annual layer thickness is available at https://doi.org/10.1594/PANGAEA.857574 and the companion paper is Philippe et al., 2016 (“Ice core evidence for a 20th century increase in surface mass balance in coastal Dronning Maud Land, East Antarctica”, https://doi.org/10.5194/tc-10-2501-2016).

opencc-zeroNov 2021View details →

FIG. 8 in First report of diversity of Cyanobacteria of Broknes Peninsula of Larsemann Hills, East Antarctica

FIG. 8. — Cyanoprokaryotes of Broknes Peninsula. A, Chroococcus minutus (Kütz.) Nägeli; B, Gloeocapsa biformis Ercegovic; C, Cyanosarcina burmensis Skuja, D, Oscillatoria anguina (Bory) Gomont; E, Oscillatoria curviceps C.Agardh ex Gomont; F, Oscillatoria limosa C.Agardh ex Gomont; G, Planktothrix rubescens (DC. ex Gomont) Anagn. & Komárek; H, Lyngbya confervoides C.Agardh ex Gomont; I, Phormidium ambiguum Gomont; J, Phormidium bekesiense (I.Kiss) K.Kiss,; K, Oscillatoria jenensis G.Schmid; L, Phormidium subfuscum Kütz. ex Gomont; M, Oscillatoria tenuis C.Agardh ex Gomont; N, Aulosira fritschii Bharadwaja; O, Coleospermum goeppertianum (goppertianum) Kirch. ex Frank; P, Stigonema mesentericum Geitler. Scale bars: A, N, O, 30 µm; B, C, F, I, L, 10 µm; D, E, G, H, J, K, M, P, 20 µm.

opencc-by-4.0Apr 2023View details →

Physico-chemical properties of the top 120 m of two ice cores in Dronning Maud Land (East Antarctica)

We provide in this dataset the complete records from the top 120 m of two ice cores drilled on two adjacent ice rises (Hammarryggen and Lokeryggen, ~100 km apart) located in coastal Dronning Maud Land, Antarctica. Density, water stable isotopes (δ18O, δD and d-excess), ions concentrations (Na+, K+, Mg+, Ca+, MSA, Cl-, SO42- and NO3-), and continuous electrical conductivity measurement (ECM) records, as well as age models and resulting surface mass balance (SMB) are presented here. These ice cores are dated back to the end of the eighteenth century (CE 1793 ± 3 years for FK17and 1780 ± 5 years for TIR18) by manual and automatic multivariable layer counting and volcanic tie points validation. The SMB is calculated after correction for vertical strain rates. A detailed description of the measurement procedures, data treatments and uncertainties can be found in: Wauthy S., Tison, J.-L., Inoue, M., El Amri, S., Sun, S., Claeys, P., and Pattyn, F.: Physico-chemical properties of the top 120 m of two ice cores in Dronning Maud Land (East Antarctica): an open window on spatial and temporal regional variability of environmental proxies, submitted to Earth System Science Data (ESSD). These new records can be compared to those from other coastal ice cores in DML and to regional or global model results, and represent a great opportunity for further studies addressing the mechanisms behind SMB spatial and temporal variability in East Antarctica. The study was funded in the framework of the Mass2Ant project, contract n° BR/165/A2 by the Belgian Science Policy BELSPO.

opencc-by-4.0Dec 2021View details →

Nitrate δ15N values and surface mass balance reconstructions from East Antarctica

Geographic information, surface mass balance (SMB) data, and sub-photic zone (>0.3 m) nitrate concentration and nitrogen isotopic composition (δ15NNO3) for 135 sites across East Antarctica. This database was used to examine and define the relationship between δ15NNO3 and SMB in Antarctica as part of the SCADI (Snow Core Accumulation from Delta-15N Isotopes) and EAIIST (East Antarctic International Ice Sheet Traverse) projects. Of these 135 sites, 92 are newly reported here while the other site data were previously published and are cited accordingly. Snow bearing nitrate was sampled from snow pits and firn/ice cores at different dates depending on the original scientific campaign, but predominately between 2010 and 2020, with the earliest sampling occurring in 2004. Nitrate was later extracted from the snow, concentrated, and analyzed for δ15NNO3. Surface mass balance data comes from a combination of previous ground-based observations (e.g., stakes, ice core data) and the output from Modèle Atmosphérique Régional version 3.6.4 with European Centre for Medium-Range Weather Forecasts “Interim” re-analysis data (ERA-interim) data, adjusted for observed model SMB biases. Elevation data were extracted from the Reference Elevation Model of Antarctica (REMA, <a href="https://doi.org/10.5194/tc-13-665-2019">https://doi.org/10.5194/tc-13-665-2019</a>). Also contains nitrate concentration and isotopic (δ15NNO3) data, ice density, and surface mass balance estimates from the ABN1314-103 ice core. This 103 m long core was drilled beginning on 07 January 2014 as one of three ice cores at Aurora Basin North, Antarctica (-71.17, 111.37, 2679 m.a.s.l), in the 2013-2014 field season. The age-depth model for ABN1314-103 was matched through ion profiles from an annually-resolved model (ALC01112018) originally developed for one of the other ABN cores through seasonal ion and water isotope cycles and constrained by volcanic horizons. Each 1 m segment of the core was weighed and measured for ice density calculations, and then sampled for nitrate at 0.33 m resolution. Nitrate concentrations were taken on melted ice aliquots with ion chromatography, while isotopic analysis was achieved through bacterial denitrification and MAT 253 mass spectrometry after concentrating with anionic resin. Using the density data and the age-depth model’s dates for the top and bottom of each 1 m core segment, we reconstructed a history of surface mass balance changes as recorded in ABN1314-103. Additionally, we also estimated the effect of upstream topographic changes on the ice core’s surface mass balance record through a ground penetrating radar transect that extended 11.5 km against the direction of glacial ice flow. The modern SMB changes along this upstream transect were linked to ABN1314-103 core depths by through the local horizontal ice flow rate (16.2 m a-1) and the core’s age-depth model, and included here for comparative analysis.

opencc-by-4.0Aug 2022View details →

Supplementary Material for "Joint Inversion Based on Variation of Information - A Crustal Model of Wilkes Land, East Antarctica"

Inversion_Results_Cluster.nc - contains geographical and vertical information of clusters Inversion_Results_RealData_Run1.nc - contains inverted susceptibilities and densities after the first inversion run with high coupling Inversion_Results_RealData_Run2.nc - contains inverted susceptibilities and densities after the second continuous inversion run with low coupling Plot.ipynb - python script for visualization

opencc-by-4.0Jun 2024View details →

ECHAM6-wiso and ECHAM5-wiso isotope daily data at Dome Concordia station, East Antarctica

ECHAM5-wiso and ECHAM6-wiso isotope daily data at Dome Concordia station (75.1° S, 123.3° E), East Antarctica. ECHAM5-wiso is described in Werner et al. (2011). The simulation was nudged to ERA-Interim dataset. The simulation spans the 2008-2017 period. ECHAM6-wiso is described in Cauquoin et al. (2019) and Cauquoin and Werner (2021). The simulation was nudged to ERA5 dataset. The simulation spans the 2008-2021 period. ECHAM5/6-wiso data from both nudged simulations were extracted at the nearest grid cell from Concordia Station, providing modeled daily-averaged values for the surface temperature, 2 m air temperature, precipitation amount, δ18O, δ2H, and d-excess values. For ECHAM6-wiso, surface specific humidity and its isotopic content are also provided for the period 2016-2021.  These data are discussed in the following pubblications: <ul> <li>Dreossi, G., Masiol, M., Stenni, B., Zannoni, D., Scarchilli, C., Ciardini, V., Casado, M., Landais, A., Werner, M., Cauquoin, A., Casasanta, G., Del Guasta, M., Posocco, V., and Barbante, C.: A decade (2008–2017) of water stable-isotope composition of precipitation at Concordia Station, East Antarctica, The Cryosphere, 18, 3911–3931, <a href="https://doi.org/10.5194/tc-18-3911-2024" target="_blank" rel="noopener">https://doi.org/10.5194/tc-18-3911-2024</a>, 2024.</li> <li>Ollivier, I., Steen-Larsen, H. C., Stenni, B., Arnaud, L., Casado, M., Cauquoin, A., Dreossi, G., Genthon, C., Minster, B., Picard, G., Werner, M., and Landais, A.: Surface processes and drivers of the snow water stable isotopic composition at Dome C, East Antarctica – a multi-datasets and modelling analysis, The Cryosphere, 19, 173–200, <a href="https://doi.org/10.5194/tc-19-173-2025">https://doi.org/10.5194/tc-19-173-2025</a>, 2025.</li> </ul>

Figure 5. Plectus telekii A in Five new records of nematodes from East Antarctica

Figure 5. Plectus telekii A - Female Anterior region; B - Female Posterior region.

Figure 1. Helicotylenchus diagonicus A in Five new records of nematodes from East Antarctica

Figure 1. Helicotylenchus diagonicus A - Female Anterior region; B - Posterior region.

Figure 3. Helicotylenchus dihystera A in Five new records of nematodes from East Antarctica

Figure 3. Helicotylenchus dihystera A - Female Anterior region; B - Posterior region.

Figure 4. Eudorylaimus sabulophilus A in Five new records of nematodes from East Antarctica

Figure 4. Eudorylaimus sabulophilus A - Female Anterior region; B - Female Posterior region.

Figure 2. Helicotylenchus exallus A in Five new records of nematodes from East Antarctica

Figure 2. Helicotylenchus exallus A - Female Anterior region; B - Posterior region.

opencc-zeroNov 2021View details →

FIG. 6 in First report of diversity of Cyanobacteria of Broknes Peninsula of Larsemann Hills, East Antarctica

FIG. 6. — Cyanobacteria sample in water logged area.