cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.962232
title: Super-high-resolution aerial imagery, digital surface model and 3D point cloud of the Northern Teshekpuk Lake, Alaska (subset 11)

description: As part of the ThawTrend-Air airborne campaign led by the Alfred Wegener Institute in 2019, we collected super-high-resolution multispectral imagery of permafrost landscapes with the Modular Aerial Camera System (MACS), developed by the German Aerospace Center. From these images, we photogrammetrically processed four-band orthophotos (blue, green, red, near-infrared) and digital surface models at a spatial resolution of 7 cm, as well as photogrammetric point clouds in RGB and NIR at 13.20 pts/m² and 5.39 pts/m², respectively. This dataset covers approximately 10.19 km² north of Teshekpuk Lake in Alaska, with all images collected on 23 July 2019. This super-high-resolution dataset provides opportunities for generating detailed training datasets of permafrost landform inventories, a baseline for change detection for thermokarst and thermo-erosion processes, and upscaling of field measurements to lower-resolution satellite observations.
DOI: 10.5281/zenodo.15165018
title: Effects of Applied Voltage Rise Rate on Micro-Branch Evolution of Positive Leaders in Laboratory Long Spark Discharges

description: The data supports the manuscript entitled "Effects of Applied Voltage Rise Rate on Micro-Branch Evolution of Positive Leaders in Laboratory Long Spark Discharges". The *.zip file contains all data used there in and can be decompressed and opened, in which nine files contain the data corresponding to their respective Figure. The data can be used freely for scientific purposes with appropriate citation.
DOI: 10.5281/zenodo.15725204
title: Effects of Applied Voltage Rise Rate on Micro-Branch Evolution of Positive Leaders in Laboratory Long Spark Discharges

description: The data supports the manuscript entitled "Effects of Applied Voltage Rise Rate on Micro-Branch Evolution of Positive Leaders in Laboratory Long Spark Discharges". The *.zip file contains all data used there in and can be decompressed and opened, in which nine files contain the data corresponding to their respective Figure. The data can be used freely for scientific purposes with appropriate citation.
DOI: 10.1594/pangaea.982475
title: Total organic carbon and total nitrogen from DH-7B sediment core from the Dahu Lake, Ilan Plain

description: A 35-meter-long sediment core (DH-7B) was retrieved from Dahu Lake using a stainless-steel pipe mounted on a floating platform. The core was subsampled at 5-cm intervals with 1-cm thickness for diatom, stable isotope, and trace element analyses. For the analysis of carbon isotopic composition in organic carbon (δ¹³C), powdered samples were decarbonated overnight with HCl. After complete removal of inorganic carbon, the residues were washed with ultrapure water (Milli-Q) by centrifugation three to four times, then dried at 60 °C overnight. The dried samples were encapsulated in tin and combusted at 1000 °C in a Flash 2000 Elemental Analyzer (Thermo Scientific). The resulting CO₂ was analyzed by isotope ratio mass spectrometry (IRMS; Delta V Advantage, Thermo Scientific) via a ConFlo interface using He as the carrier gas. The ¹³C/¹²C ratios were reported in δ notation relative to the Vienna Pee Dee Belemnite (VPDB) standard. The USGS 40 standard (L-glutamic acid, δ¹³C = −26.39 ± 0.04‰; C content = 40.8%) was used to monitor instrument performance. Analytical precision was ±0.1‰ for δ¹³C and &lt;10% for C content. Total nitrogen (N) content was measured simultaneously using the jump method in the same run.
DOI: 10.1594/pangaea.982467
title: Master tracks in different resolutions of HEINCKE cruise HE656, Bremerhaven - Bremerhaven, 2025-03-14 - 2025-03-19

description: Raw data acquired by position sensors on board RV Heincke during expedition HE656 were processed to receive a validated master track which can be used as reference of further expedition data. During HE656 the inertial navigation system IXSEA PHINS III and the GPS receivers Trimble Marine SPS461 and SAAB R5 SUPREME NAV were used as navigation sensors. Data were downloaded from DAVIS SHIP data base (https://dship.awi.de) with a resolution of 1 sec. Processed data are provided as a master track with 1 sec resolution derived from the position sensors' data selected by priority and a generalized track with a reduced set of the most significant positions of the master track.
description: This dataset contains the master track in 10 min resolution, for other resolutions please see "Other version" references.
DOI: 10.1594/pangaea.742879
title: (Table S3) Isotope and Mg/Ca measurements from sediment core ME0005A-43JC of tropical Pacific
DOI: 10.1594/pangaea.834321
title: Stable isotopes and Mg/Ca ratios of Globorotalia tumida of ODP Hole 138-848B
DOI: 10.1594/pangaea.966604
title: XRF data of sediment core YL16-5A from the Yellowstone Lake, USA
DOI: 10.1594/pangaea.966575
title: Geochemistry of sediment core YL16-2C from the Yellowstone Lake, USA
DOI: 10.1594/pangaea.966576
title: Geochemistry of sediment core YL16-5A from the Yellowstone Lake, USA
DOI: 10.1594/pangaea.742880
title: (Table S4) Isotope and Mg/Ca measurements from ODP Site 202-1242 of tropical Pacific

description: Sediment depth is given in mcd.
DOI: 10.1594/pangaea.943477
title: Holocene palynological data of sediment core BdlV-06-01
DOI: 10.1594/pangaea.877993
title: Temperatures and Mg/Ca ratios of sediment core GeoB10053-7
DOI: 10.1594/pangaea.943490
title: Holocene palynological data of sediment core LdRS-06-01
DOI: 10.1594/pangaea.772222
title: Mg/Ca paleotemperatures on Globigerinoides ruber (pink) of ODP Hole 175-1078C

description: 2017-09-25: Correction of parameter #9 to Globigerinoides ruber (pink) Mg/Ca.
DOI: 10.1594/pangaea.833113
title: (Table 2) B/Ca and Mg/Ca ratios in planktonic foraminifera from ODP Hole 108-668B

description: AGE vs. Vostock Gas Age Scale from Hönisch and Hemming (2005). Model 1 uses the deconvolution of foraminiferal d18O and Mg/Ca to yield local salinity, while model 2 uses the theoretical concentration of salt due to changing sea level.
DOI: 10.1594/pangaea.841631
title: (Table S1) Individual Globigerinoides sacculifer temperature values at ODP Hole 138-849A
DOI: 10.1594/pangaea.834323
title: Stable isotopes and Mg/Ca ratios of Globorotalia tumida of ODP Site 138-853
DOI: 10.1594/pangaea.841630
title: (Table S1) Individual Globigerinoides sacculifer temperature values at ODP Hole 130-806A
DOI: 10.15468/dl.g9c2h9
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
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 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0066378-250525065834625/datasets/export for details.
DOI: 10.1594/pangaea.847352
title: Stable oxygen isotope and Mg/Ca data of Globigerinoides ruber white, water stable oxygen isotope data, SST and MAT records of sediment core GeoB6211-2

description: During Termination 1, millennial-scale weakening events of the Atlantic meridional overturning circulation (AMOC) supposedly produced major changes in sea surface temperatures (SSTs) of the western South Atlantic, and in mean air temperatures (MATs) over southeastern South America. It has been suggested, for instance, that the Brazil Current (BC) would strengthen (weaken) and the North Brazil Current (NBC) would weaken (strengthen) during slowdown (speed-up) events of the AMOC. This anti-phase pattern was claimed to be a necessary response to the decreased North Atlantic heat piracy during periods of weak AMOC. However, the thermal evolution of the western South Atlantic and the adjacent continent is so far largely unknown. Here we address this issue, presenting high-temporal-resolution SST and MAT records from the BC and southeastern South America, respectively. We identify a warming in the western South Atlantic during Heinrich Stadial 1 (HS1), which is followed first by a drop and then by increasing temperatures during the Bølling–Allerød, in phase with an existing SST record from the NBC. Additionally, a similar SST evolution is shown by a southernmost eastern South Atlantic record, suggesting a South Atlantic-wide pattern in SST evolution during most of Termination 1. Over southeastern South America, our MAT record shows a two-step increase during Termination 1, synchronous with atmospheric CO2 rise (i.e., during the second half of HS1 and during the Younger Dryas), and lagging abrupt SST changes by several thousand years. This delay corroborates the notion that the long duration of HS1 was fundamental in driving the Earth out of the last glacial.
description: Supplement to: Chiessi, Cristiano Mazur; Mulitza, Stefan; Mollenhauer, Gesine; Silva, Juliana Braga; Groeneveld, Jeroen; Prange, Matthias (2015): Thermal evolution of the western South Atlantic and the adjacent continent during Termination 1. Climate of the Past, 11(6), 915-929
DOI: 10.1594/pangaea.877996
title: Temperatures and Mg/Ca ratios (G. ruber and G. tumida) of sediment core GeoB10038-4
DOI: 10.1594/pangaea.906204
title: Fucino palaeolake multiproxy data from F1-F3 core (Holocene - 190 ka)

description: Here we present a multi-proxy record from palaeolake Fucino (Abruzzo, Central Italy), acquired during the F1-F3 drilling campaign. This is the first continuous and high-resolution palaeoenvironmental record in the central Mediterranean region continuously spanning over the last two glacial-interglacial cycles and providing an independent chronology.The record consists of a core composite resulting from two parallel and adjacent core series (F1 and F3). Cores were analysed via high resolution XRF scanning and through geochemical, mineralogical and grain-size analyses on discrete samples. Selected XRF elemental counts (Ca, Ti and Zr), Total Nitrogen (TN), Total Organic and Inorganic Carbon (TOC, TIC), X-ray powder diffraction and grain-size data are used to develop proxies for local environmental processes strictly dependent on the hydro-climatic regime of the Central Mediterranean region.The chronology of the record is based on 17 radioisotopically dated tephra layers interbedded within the sedimentary succession. 14C and 40Ar/39Ar age points are interpolated with the bayesian age modelling package Bacon allowing a robust assessment of age uncertainties.
description: Supplement to: Mannella, Giorgio; Giaccio, Biagio; Zanchetta, Giovanni; Regattieri, Eleonora; Niespolo, Elizabeth M; Pereira, Alison; Renne, Paul; Nomade, Sébastien; Leicher, Niklas; Perchiazzi, Natale; Wagner, Bernd (2019): Palaeoenvironmental and palaeohydrological variability of mountain areas in the central Mediterranean region: A 190 ka-long chronicle from the independently dated Fucino palaeolake record (central Italy). Quaternary Science Reviews, 210, 190-210
DOI: 10.15468/dl.wez27p
title: Occurrence Download

description: A dataset containing 49026 species occurrences available in GBIF matching the query:
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}

 The dataset includes 49026 records from 66 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0066376-250525065834625/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.1594/pangaea.841927
title: Stable isotope and Mg/Ca ratio of sediment core GeoB12610-2

description: To reconstruct the still poorly understood thermocline fluctuations in the western tropical Indian Ocean, a sediment core located off Tanzania (GeoB12610-2; 04°49.00'S, 39°25.42'E, 399 m water depth) covering the last 35 ka was analysed. Mg/Ca-derived temperatures from the planktonic foraminifera Globigerinoides ruber (white) and Neogloboquadrina dutertrei indicate that the last glacial was ~2.5 °C colder in the surface waters and ~3.5 °C colder in the thermocline compared with the present day. The depth of the thermocline and thus the stratification of the water column were shallower during glacial periods and deepened during the deglaciation and Holocene. The increased inflow of Southern Ocean Intermediate Waters via 'ocean tunnels' appears to cool the thermocline from below, leading to a similarity between the thermocline record of GeoB12610-2 with the Antarctic EDML temperature curve during the glacial. With rising sea level and the corresponding greater inflow of Red Sea Waters and Indonesian Intermediate Waters, the proportion of Southern Ocean Intermediate Water within the South Equatorial Current is reduced and, by Holocene time, the correlation to Antarctica is barely traceable. Comparison with the eastern Indian Ocean reveals that the thermocline depth reverses from the last glacial to present.
description: Supplement to: Rippert, Nadine; Baumann, Karl-Heinz; Pätzold, Jürgen (2015): Thermocline fluctuations in the western tropical Indian Ocean during the past 35 ka. Journal of Quaternary Science, 30(3), 201-210
DOI: 10.1594/pangaea.844570
title: Planktic foraminifera isotopes, temperature and δ¹⁸O of seawater at the central Walvis Ridge for Termination II (MIS 6 to 5), sediment core 64PE-174P13

description: Salty and warm Indian Ocean waters enter the South Atlantic via the Agulhas leakage, south of Africa. Model simulations and proxy evidence of Agulhas leakage strengthening during glacial terminations led to the hypothesis that it was an important modulator of the Atlantic Ocean circulation. Yet, the fate of the leakage salinity and temperature anomalies remains undocumented beyond the southern tip of Africa. Downstream of the leakage, new paleoceanographic evidence from the central Walvis Ridge (southeast Atlantic) shows that salinity increased at the thermocline, and less so at the surface, during glacial termination II. Thermocline salinity change coincided with higher frequency of Agulhas rings passage at the core location and with salinity maxima in the Agulhas leakage area, suggesting that leakage waters were incorporated in the Atlantic circulation through the thermocline. Hydrographic changes at the Walvis Ridge and in the leakage area display a distinct two-step structure, with a reversal at ca. 134 ka. This matched a wet interlude within the East Asia weak monsoon interval of termination II, and a short-lived North Atlantic warming. Such concurrence points to a Bølling-Allerød-like recovery of the Atlantic circulation amidst termination II, with a northward shift of the Intertropical Convergence Zone and Southern Hemisphere westerlies, and attendant curtailment of the interocean connection south of Africa.
description: Supplement to: Scussolini, Paolo; Marino, Gianluca; Brummer, Geert-Jan A; Peeters, Frank J C (2015): Saline Indian Ocean waters invaded the South Atlantic thermocline during glacial termination II. Geology, 43(2), 139-142
DOI: 10.1594/pangaea.910305
title: (Table 9) Alkenone and Mg/Ca derived SST of surface sediments
DOI: 10.1594/pangaea.610271
title: Stable isotopes and sea surface temperature on planktic foraminifera of sediment core WIND 28K

description: We reconstructed the surface hydrography of the South Equatorial Current in the western Indian Ocean for the last 65,000 years using a marine sediment core record. Results show that tropical Indian Ocean temperatures resemble temperatures from Antarctic ice cores with warm and cold fluctuations synchronous with the Antarctic Cold Reversal and the Antarctic warm events A1–A4. The most likely thermal link involves Subantarctic Mode Water (SAMW) which forms north of the subpolar frontal zone and spreads northward into the Indian Ocean. This subsurface water mass is the prime suspect because of a stronger temperature response in the thermocline (recorded by the foraminifer N. dutertrei) than in surface water (G. ruber).
description: all measurements were carried out on the 300-355 ym fraction
description: Supplement to: Kiefer, Thorsten; McCave, I Nicholas; Elderfield, Henry (2006): Antarctic control on tropical Indian Ocean sea surface temperature and hydrography. Geophysical Research Letters, 33(24), L24612
DOI: 10.1594/pangaea.834673
title: Stable oxygen isotope and Mg/Ca ratios of planktonic foraminifera, and SST calculation for ODP Hole 202-1241C

description: Sediment depth is given in mcd.
DOI: 10.1594/pangaea.877995
title: Temperatures and Mg/Ca ratios (G. ruber and N. dutertrei) of sediment core GeoB10038-4
DOI: 10.1594/pangaea.877991
title: Temperatures and Mg/Ca ratios of sediment core SO189/2_039KL
DOI: 10.1594/pangaea.833323
title: (Figure 1) Hydroclimate records from the eastern tropical Indian Ocean of sediment core SO189-119KL

description: per mil SMOW = per mil standard mean ocean water calculated using the HL equation of Bemis et al. (1998).sl-corr. = sea-level corrected after Waelbroeck et al. (2002).
DOI: 10.1594/pangaea.909299
title: Horizons, seismic reference profile, high-resolution figures and statistical data used for mapping/gridding mass movement deposits in Lake El'gygytgyn

description: Density-driven mass movement deposits (MMDs) were mapped throughout the Quaternary sedimentary record of Lake El'gygytgyn (NE Siberia) using high-resolution acoustic data. Three different acoustic facies types were identified in the lake: (1) pelagic sediment, (2) plastic flow deposits and (3) turbidites. Deposits from plastic flows are dominantly present proximal to the lakes' slopes, whereas deposits from turbidity currents occur more spatially distributed. During glacial times, the distribution of MMDs was more uniform, while during interglacial periods, MMDs were deposited predominantly close to the slope of the northwestern area. Furthermore, the overall number of MMDs and accumulated sediment volume significantly varies between glacial/interglacial periods. About 1.6 times more MMDs were mapped during interglacials, contributing to a 3.5 times higher sediment volume. The main reason for this large difference is that a significant increase in plastic flows were formed during interglacials, which account for a much larger volume of sediments when compared with the glacial intervals characterized by increased amount of turbidites. It appears that the most important source areas for MMDs are located at the northern and western shores. Cycles of lake level changes caused by variations in climate conditions between glacials and interglacials are likely the main trigger mechanism for the generation of these MMDs. The climate-dependent genesis and partly erosive potential influencing the sedimentary record contain implications to consider for future paleo-environmental reconstructions in lacustrine settings.The supplementary data include high resolution versions of the figures of the article, a spreadsheet with calculated data for the statistics presented, an archive of mapped horizons in the seismic data used for gridding and the reference profile AWI-20038540.
DOI: 10.1594/pangaea.834003
title: Temperature in air, snow, ice, and water measured with a thermistor chain Ice Mass-balance Buoy (IMB) at Atka Bay, 2012-11-22 to 2014-02-09
DOI: 10.1594/pangaea.839680
title: Summary of boron isotope and Mg/Ca data

description: Biological productivity and carbon export in the equatorial Atlantic are thought to have been dramatically higher during the last glacial period than during the Holocene. Here we reconstruct the pH and CO2 content of surface waters from the eastern equatorial Atlantic Ocean over the past ~30 k.y. using the boron isotope composition of Globigerinoides ruber (a mixed-layer-dwelling planktic foraminifera). Our new record, combined with previously published data, indicates that during the last glacial, in contrast to today, a strong west to east gradient existed in the extent of air:sea equilibrium with respect to pCO2 (DeltapCO2), with the eastern equatorial Atlantic acting as a significant source of CO2 (+100 µatm) while the western Atlantic remained close to equilibrium (+25 µatm). This pattern suggests that a fivefold increase in the upwelling rate of deeper waters drove increased Atlantic productivity and large-scale regional cooling during the last glacial, but the higher than modern DeltapCO2 in the east indicates that export production did not keep up with enhanced upwelling of nutrients. However, the downstream decline of DeltapCO2 provides evidence that the unused nutrients from the east were eventually used for biologic carbon export, thereby effectively negating the impact of changes in upwelling on atmospheric CO2 levels. Our findings indicate that the equatorial Atlantic exerted a minimal role in contributing to lower glacial-age atmospheric CO2.
description: Supplement to: Foster, Gavin L; Sexton, Philip F (2014): Enhanced carbon dioxide outgassing from the eastern equatorial Atlantic during the last glacial. Geology, 42(11), 1003-1006
DOI: 10.1594/pangaea.877992
title: Temperatures and Mg/Ca ratios of sediment core GeoB10038-4
DOI: 10.1594/pangaea.924094
title: brGDGTs fractional abundances from settling particulate matter of Lake 578, southern Greenland
DOI: 10.1594/pangaea.924067
title: brGDGTs fractional abundances from sediment core of Lake 578, southern Greenland
DOI: 10.1594/pangaea.924069
title: brGDGTs fractional abundances from surface sediments of Lake 578, southern Greenland
DOI: 10.1594/pangaea.924098
title: brGDGTs fractional abundances from soils of Lake 578, southern Greenland
DOI: 10.1594/pangaea.868615
title: Stable oxygen isotope and Mg/Ca record of sediment core GIK18515-3
DOI: 10.1594/pangaea.885612
title: Surface and subsurface analyses of Trilobatus sacculifer from ODP site 130-806
DOI: 10.1594/pangaea.831773
title: (Table S1) Stable oxygen isotopes, Mg/Ca ratios and UK'37 measurement of sediment core NIOP-C2_929
DOI: 10.1594/pangaea.834005
title: Interpolated temperature and temperature rise after heating in air, snow, ice, and water measured with a thermistor chain Ice Mass-balance Buoy (IMB) at Atka Bay, 2012-11-23 to 2014-02-09
DOI: 10.1594/pangaea.472294
title: Stable isotopes, magnesium/calcium-ratios and sea surface temperature on foraminifera of sediment core MD01-2378

description: To estimate changes of thermocline structure, we used paired G.ruber and P.obliquiloculata Mg/Ca temperatures. For convenience, temperature derived from P.obliqu Mg/Ca was named 'thermocline or subsurface water temperature'.
DOI: 10.1594/pangaea.834675
title: Stable oxygen isotope and Mg/Ca ratios of planktonic foraminifera, and SST calculation for ODP Hole 165-999A

description: Sediment depth is given in mcd.
DOI: 10.1594/pangaea.712513
title: Stable isotopes, magnesium/calcium-ratios and sea water temperature on planktonic foraminifera of sediment core MD01-2378

description: AGE follows the GICC05 time scale. To estimate changes of surface and thermocline water structure during MIS 3, we used paired G. ruber and P. obliquiloculata Mg/Ca. For convenience, temperature derived from G. ruber was named 'SST' and P. obliquiloculata Mg/Ca was named 'upper thermocline'.
DOI: 10.1594/pangaea.914482
title: Lead 210 and Ceasium 137 in sediment core Tel2006 Lake Teletskoye, Altai Mountains, south-eastern West Siberia, Russia