cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.888399
title: Ostracode abundance and Simpson's index over the past 700,000 years at IODP Site 346-U1427

description: The Sea of Japan is a marginal sea, semi-enclosed by the Eurasian Continent, Korean Peninsula, Japanese archipelago, and connected to the Pacific Ocean and adjacent seas by three shallow straits (water depths &lt; 130 m). Marginal seas are ideal natural laboratories to study biotic responses to large-scale environmental changes as they are typically sensitive to glacial-interglacial and stadial-interstadial climatic cycles. However, only limited number of studies covers time periods beyond 1 to 2 glacial-interglacial cycles. Here we present a 700,000-year record of benthic biotic response to past oceanographic changes in the southern Sea of Japan, covering the past seven glacial-interglacial cycles, based on ostracode assemblages at the IODP Site U1427. The results indicate that the long-term oxygen variability has been a major control of deep marginal sea biota. Five local extirpation events were recognized as barren zones during glacial maxima (i.e., sea-level minima) immediately before terminations I, II, IV, V, and VII in MISs 2, 6, 10, 12, and 16, which are probably caused by bottom-water oxygen depletion. The results of multivariate analyses indicated clear faunal cyclicity influenced by glacial-interglacial scale oxygen variability with the succession from opportunistic species dominance through tolerant infauna dominance to barren zone during the deoxygenation processes and the opposite succession during the recovery processes. The Sea of Japan ostracode abundance and faunal composition showed distinct difference between the post- and pre-MBE (Mid-Brunhes Event at around 400-350 ka) periods, indicating the MBE as a major disturbance event of deep-sea, especially marginal-sea ecosystems. The MBE shortened the duration of the extirpation events, fostered dominance of warmer-water species, and amplified the glacial-interglacial faunal cyclicity. Our long-term biotic response study clearly indicates that deep marginal sea ecosystems are dynamic and vulnerable to climate changes.
description: Supplement to: Huang, Huai-Hsuan May; Yasuhara, Moriaki; Iwatani, Hokuto; Alvarez Zarikian, Carlos A; Bassetti, Maria Angela; Sagawa, Takuya (2018): Benthic Biotic Response to Climate Changes Over the Last 700,000 Years in a Deep Marginal Sea: Impacts of Deoxygenation and the Mid-Brunhes Event. Paleoceanography and Paleoclimatology, 33(7), 766-777
DOI: 10.1594/pangaea.909880
title: Daily summary of weather, snow, and preferential-flow conditions at the Snow and Ice Research Center, Nagaoka (Japan) - snow seasons 2006 through 2018

description: This dataset includes daily summaries of weather, snow, and preferential-flow conditions at the Snow and Ice Research Center, Nagaoka (Japan) -- snow seasons 2006 through 2018.The summary comprises 29 candidate predictors (features) of preferential flow as estimated by a weather-snow station, manual snow pits, and a snow model (SNOWPACK) and four metrics of preferential-flow characteristics measured by a multi-compartment lysimeter made by nine 1-m2 cells (standard deviation of mean snowpack runoff, coefficient of variation of mean snowpack runoff, maximum deviation of mean snowpack runoff, and mean snowpack runoff).This dataset was produced during the preparation of the paper ''Insights into preferential-flow snowpack runoff using Random Forest'' (WRR, doi:10.1029/2019WR024828).More details about this dataset can be found in the above mentioned paper.
description: Supplement to: Avanzi, Francesco; Johnson, Ryan Curtis; Oroza, Carlos A; Hirashima, Hiroyuki; Maurer, Tessa; Yamaguchi, Satoru (2019): Insights into preferential-flow snowpack runoff using Random Forest. Water Resources Research
DOI: 10.1594/pangaea.907867
title: Input files for LBM-DEM simulation of immersed granular collapse

description: The input files for the case D-VB. The files with the name started with "in" are input files for LIGGGHTS (https://github.com/CFDEMproject/LIGGGHTS-PUBLIC) and the C++ file is the input file for Palabos (http://www.palabos.org/). The input files are called in the following sequence:1. in.cloud - generate the particles2. in.rain - create a granular column by turning on the gravity3. in.trim - trim the particles so that the aspect ratio is 0.84. damBreakImmersed.cpp - solve fluid filed using LBM5. in.immerse - immersed the granular column6. in.cycle - called by "damBreakImmersed.cpp" to advance the DEM simulationOther cases with different column sizes and packing densities can be simulated by the same input files with adjustments on the geometry and friction coefficients during sample preparation.
description: Supplement to: Yang, G C; Jing, L; Kwok, C Y; Sobral, Y D (2020): Pore-Scale Simulation of Immersed Granular Collapse: Implications to Submarine Landslides. Journal of Geophysical Research-Earth Surface, 125(1)
DOI: 10.1594/pangaea.826585
title: Age control points of sediment core PS75/093-1

description: Alignment of Fe content records to EDC dust contents on AICC12 time-scale; see Lamy et al., 2014 SOM.
DOI: 10.1594/pangaea.891433
title: Diatom-bound nitrogen isotope records in sediment core MD11-3353
DOI: 10.1594/pangaea.906906
title: Thermal conductivity of snow, antarctic firn and porous ice at -3°C, -20°C and -60°C

description: This dataset presents values of effective thermal conductivity of 64 samples of snow, antarctic firn and porous ice in the x, y and z directions (z being the direction of gravity) at -3°C, -20°C and -60°C. Firn and porous ice samples were collected at different depth along ice cores, from 23 to 133 m, covering different levels of densification until the close-off. In addition, we provide sample type (snow types are given according the international seasonal snow classification), sample depth, sample density, sample correlation lengths in x, y, and z direction.
description: Supplement to: Calonne, Neige; Milliancourt, Lucas; Burr, Alexis; Philip, Armelle; Martin, Christophe L; Flin, Frederic; Geindreau, Christian (2019): Thermal Conductivity of Snow, Firn, and Porous Ice From 3-D Image-Based Computations. Geophysical Research Letters, 46(22), 13079-13089
DOI: 10.1594/pangaea.810003
title: ln(Si/Al) record from ODP Site 108-658, off Mauritania

description: Depth, sediment [m] = mbsf ODP (m)New composite depth was derived based on the XRF data obtained in this study; for intervals with overlapping data, only data from one hole were used for composite record. Below ~74.5 m composite depth (~460 ka), sediment compaction became an issue especially in Hole B (see comments), leading to uncertainties in core depth and age. mbsf from ODP is based on depths for each section as reported in the ODP Core/Section Summary.
DOI: 10.1594/pangaea.839453
title: Authigenic uranium, mass accumulation rates, benthic δ¹³C and SST reconstruction for ODP Site 177-1094
DOI: 10.1594/pangaea.903046
title: δ¹³C and δ¹⁸O isotopes measured on planktic foraminifera of IODP Hole 356-U1459B
DOI: 10.1594/pangaea.903101
title: X-ray fluorescence (XRF) records of IODP Site 356-U1459
DOI: 10.1594/pangaea.899073
title: Controlled-source electromagnetic data from the TAG hydrothermal field, 26N Mid-Atlantic Ridge

description: Raw data from electromagnetic survey at the Mid-Atlantic Ridge 26N (JC138, cruise report https://www.bodc.ac.uk/resources/inventories/cruise_inventory/report/16052/ ) , July 2016. Vulcan voltage logger binary files (Constable, S. et al. 2016, Scripps Institution of Oceanography) and DASI electric current transmitter .tdms files (Sinha et al. 1990, University of Southampton) can be read with the Matlab scripts attached (scripts to read Vulcan data are also found at http://marineemlab.ucsd.edu/Projects/lcplot/). Navigation files include CTD measurements at DASI, pressure at each instrument, USBL data for DASI and the end of the array, winch/deep tow cable data, and internal compass readings for the towed Vulcan receivers, some of which are .mat files that can be read with Matlab.
description: Supplement to: Gehrmann, Romina A S; North, Laurence J; Graber, Sebastian; Szitkar, Florent; Petersen, S; Minshull, Tim A; Murton, Bramley J (2019): Marine Mineral Exploration With Controlled Source Electromagnetics at the TAG Hydrothermal Field, 26°N Mid-Atlantic Ridge. Geophysical Research Letters, 46(11), 5808-5816
DOI: 10.1594/pangaea.826579
title: Age control points of sediment core PS75/056-1

description: Alignment of Fe content records to EDC dust contents on AICC12 time-scale; see Lamy et al., 2014 SOM.
DOI: 10.1594/pangaea.826597
title: (Fig. 4) Proxy records for paleoproductivity from subantarctic sediment core PS75/059-2

description: Alignment of Fe content records to EDC dust contents on AICC12 time-scale; see Lamy et al., 2014 SOM.
DOI: 10.1594/pangaea.907429
title: Sedimentary record of arc-continent collision along Mesozoic SW North America (Siuna Belt, Nicaragua)

description: The western margin of the Caribbean Plate is a typical example where oceanic and continental terranes have amalgamated by subduction, collision, and strike-slip processes. The boundaries between these blocks, as well as their tectonostratigraphic records, are generally covered by younger deposits and dense tropical vegetation, which may hamper reconstructing the accretionary evolution of the convergent margin. In that context, the study of overlap sedimentary assemblages represents an important tool to constrain the accretion timing of terranes. In northern Central America, the geology of the suture zone between the Chortis Block and the exotic Siuna Intraoceanic Arc indicates that the two terranes were assembled together during a Hauterivian arc-continent collision (ca. 134-131 Ma). The exotic origin of the intraoceanic arc is based on the nature of metamorphic blocks within and the kinematics of the Siuna Serpentinite Mélange. The short duration of the collision event is suggested by coeval exhumation of the Siuna Serpentinite Mélange and Chortis-derived coarse sedimentation (El Amparo Formation) along the suture zone, rapidly followed by onset of pelagic sedimentation (Rio Matis Formation). Although the collision appears to have been short-lived and preserved only in the suture zone, post-collisional extension affected intra- to back-arc settings of the Chortis Block and led to the formation of kilometer-thick extensional basins. We envisage that the convergent margin inboard of SW Mexico-represented by the fringing Guerrero Intraoceanic Arc and the Mixteca continental terrane-underwent similar post-collisional extension, whereas the western margin of the proto-Caribbean oceanic realm experienced onset of WSW-dipping subduction beneath the accreted Siuna Intraoceanic Arc.
description: Supplement to: Andjić, Goran; Escuder-Viruete, Javier; Baumgartner-Mora, Claudia; Baumgartner, Peter O; Mitchell, Simon F; Caron, Michèle; Caus, Esmeralda (2019): Sedimentary Record of Arc-Continent Collision Along Mesozoic SW North America (Siuna Belt, Nicaragua). Tectonics, 38(12), 4399-4425
DOI: 10.1594/pangaea.907074
title: Triaxial compression tests with gas hydrate-bearing sediments

description: The overall data set contains experimental data sets (24) and numerical simulation data sets (9) referring to triaxial compression tests on gas hydrate-bearing sediments (see cited publication). The compression tests were carried out in the high-pressure apparatus NESSI (Natural Environment Simulator for Sub-seafloor Interactions) which was equipped with a triaxial cell mounted in a 40 L stainless steel vessel. Sediment samples were prepared from quartz sand (porosity 0.35, grain size 0.1 - 0.6 mm, G20TEAS, Schlingmeier, Schwülper, Germany), and mixed with defined amounts of deionized water. The partially water-saturated and thoroughly homogenized sediments were filled into the triaxial sample cell, which was equipped with a combination of a FKM sleeve and a latex rubber sleeve to obtain final sample dimensions of 160 mm in height and 80 mm in diameter. GH formation was carried out in normally consolidated samples at constant isotropic effective stress of 1 MPa using the excess-gas-method. Strain-controlled drained triaxial compression tests were performed after individual hold periods. The tests were carried out at axial strain rates 0.006, 0.06 and 0.6 %/min, and at constant minor principal stresses of 0.25, 0.5 and 1.0 MPa. Further details on experimental procedures can be found in the publication.
description: Supplement to: Deusner, Christian; Gupta, Shubhangi; Xie, X-G; Leung, Y F; Uchida, S; Kossel, Elke; Haeckel, Matthias (2019): Strain Rate-Dependent Hardening-Softening Characteristics of Gas Hydrate-Bearing Sediments. Geochemistry, Geophysics, Geosystems, 20(11), 4885-4905
DOI: 10.1594/pangaea.955040
title: Element analysis of sediment core SO217-18522 (GIK18522-3)
DOI: 10.1594/pangaea.900075
title: Model-simulated net ecosystem Production (NEP) across the Mongolian Plateau

description: Here we used a well-evaluated process-based ecosystem model, Dynamic Land Ecosystem Model (DLEM), to simulate the spatial and temporal changes of net ecosystem productivity (NEP) in response to climate variability and extremes in the Mongolian Plateau from 1980 to 2010, at a spatial resolution of a quarter degree. The simulation period covers covering a drought period that spans from 2000 to 2009. In this study, we used time-series gridded data at a spatial resolution of quarter degree (about 30km at the equator) to describe key environmental changes in climate (warming and climate variability), land use, and atmospheric CO2 concentration, and nitrogen deposition in the Mongolian Plateau during 1901 to 2010. All the input data have been resampled to a quarter degree (about 30 km × 30 km at the equator) and used to drive the DLEM model. After obtaining initial status, we set up two simulation experiments for the transient run: In experiment I (Climate), only climate drivers were allowed to change over time while other drivers were kept constant at the level of 1900; In experiment II (Climate plus Others), all the environmental drivers (including climate, land use, CO2 concentration, and nitrogen deposition) were turned on, by which we examine how climate and other input drivers together affected the direction and magnitude of C fluxes in the study region. Results from experiment II can be viewed as our "best estimate" of C dynamics in the Mongolian Plateau.
description: Model output data of NEP is named as S1/S2_NEPy%year%, and in ascii format. The header file is as below:ncols 153nrows 64xllcorner 87.837207794189yllcorner 37.408272753361cellsize 0.25NODATA_value -9999
description: Supplement to: Lu, Chaoqun; Tian, Hanqin; Zhang, Jien; Yu, Zhen; Pan, Shufen; Dangal, Shree; Zhang, Bowen; Yang, Jia; Pederson, Niel; Hessl, Amy (2019): Severe long-lasting drought accelerated carbon depletion in the Mongolian Plateau. Geophysical Research Letters, Geophysical Research Letters, 46(10), 5303-5312
DOI: 10.15468/dl.g8ae97
title: Occurrence Download

description: A dataset containing 13622 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Geometry POLYGON((-173.18459 26.54416,-45.81541 26.54416,-45.81541 77.45584,-173.18459 77.45584,-173.18459 26.54416))",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "TaxonKey is Ochotona princeps",
 "Year 1900-2025"
 ]
}

 The dataset includes 13622 records from 64 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0039323-251120083545085/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.1594/pangaea.970398
title: CO2 release rates from a typical thaw slump on the northern Qinghai-Tibet Plateau
DOI: 10.1594/pangaea.970422
title: Cumulative CO2 release rates from a typical thaw slump on the northern Qinghai-Tibet Plateau
DOI: 10.1594/pangaea.971261
title: R-script to: Soil properties, carbon composition, microbial community, and potential CO2 production from a typical thaw slump on the northern Qinghai-Tibet Plateau
DOI: 10.1594/pangaea.971270
title: Environment variables from a typical thaw slump on the northern Qinghai-Tibet Plateau
DOI: 10.1594/pangaea.901802
title: Water migration in the subduction zone mantle wedge: model data and scripts

description: This package contains the model data and plotting scripts for Paper of Wang et al 2019 JGR. The size of the original model data is a few GB for each model. Here we provide 4 steps model data for 3 models, which can be used to reproduce many of the figures in the paper. The pyc files are the python library files, while the python file (P1figure2018.py) is the plotting script that produces the images from the model data. More detail instruction can be find in “Readme”.
description: Supplement to: Wang, Hongliang; Huismans, Ritske S; Rondenay, Stéphane (2019): Water migration in the subduction mantle wedge: a two-phase flow approach. Journal of Geophysical Research: Solid Earth
DOI: 10.1594/pangaea.971256
title: Extended age model of sediment core GeoB18530-1 by correlation of Ca/Sr record to NGRIP chronology

description: The previously published 14C-AMS based chronology of GeoB18530-1 by Max et al. (2022; doi:10.1594/PANGAEA.943562), covering the upper 0 - 7.16 m core section down to Heinrich Event layer H2, was revised and extended to the full core length of 10.64 m, including now also Heinrich Event layers H3 to H5a. The age model was first extended back to 34.6 ka using two older 14C AMS dates by Lars Max (doi:10.1594/PANGAEA.943562). This radiocarbon chronology now covers H1 – H3 within inferred age brackets of 15.3 to 17.3 ka (H1), 23.3 to 25.3 ka (H2) and 28.5 to 30.5 ka (H3) respectively. The ages of the older Heinrich Event layers H4 – H5a were obtained by correlating the Ca/Sr and d18O records to the NGRIP chronology, obtaining age brackets of 38.3 to 39.8 ka (H4), 47.2 to 49.0 ka (H5) and 55.9 to 56.2 ka (H5a). Between these age tie points, we linearly interpolated sediment ages in 1 cm depth increments and assigned Heinrich Event numbers (H1 to H5a) and (Heinrich-related) interlayer numbers (I1 to I6) to the respective stratigraphic units.
description: Corresponds to Figure 3.
DOI: 10.1594/pangaea.971262
title: Extended age model of sediment core GeoB18530-1 by correlation of δ18O record to NGRIP chronology

description: The previously published 14C-AMS based chronology of GeoB18530-1 by Max et al. (2022; doi:10.1594/PANGAEA.943562), covering the upper 0 - 7.16 m core section down to Heinrich Event layer H2, was revised and extended to the full core length of 10.64 m, including now also Heinrich Event layers H3 to H5a. The age model was first extended back to 34.6 ka using two older 14C AMS dates by Lars Max (doi:10.1594/PANGAEA.943562). This radiocarbon chronology now covers H1 – H3 within inferred age brackets of 15.3 to 17.3 ka (H1), 23.3 to 25.3 ka (H2) and 28.5 to 30.5 ka (H3) respectively. The ages of the older Heinrich Event layers H4 – H5a were obtained by correlating the Ca/Sr and d18O records to the NGRIP chronology, obtaining age brackets of 38.3 to 39.8 ka (H4), 47.2 to 49.0 ka (H5) and 55.9 to 56.2 ka (H5a). Between these age tie points, we linearly interpolated sediment ages in 1 cm depth increments and assigned Heinrich Event numbers (H1 to H5a) and (Heinrich-related) interlayer numbers (I1 to I6) to the respective stratigraphic units.
description: Corresponds to Figure 3.
DOI: 10.1594/pangaea.971271
title: IRD composition and accumulation rates of Heinrich Event layers (H1-H5a) and interlayers (I1-I5) in sediment core GeoB18530-1

description: The cumulative classified count record (in percentages) over ~2 cm resolution of each petrologically identified IRD lithologies within the stratigraphic units of Heinrich Layers and Interlayers (about ~10 to 20 samples of 10 cm3) represent the &gt;1 mm IRD particles in ~100 to 200 cm3 of sediments. The data are expressed in percentage to facilitate correlation and also avoiding exaggeration of less signification IRD particle abundances. IRD accumulation rate per area and time was derived from IRD counts and sedimentation rate of each stratigraphic unit.
description: Corresponds to Figure 9a-c.
DOI: 10.1594/pangaea.971280
title: Lithology-specific IRD counts of sediment core GeoB18530-1

description: Total and lithology-specific ice-rafted detritus (IRD) counts of sediment core GeoB18530-1 were determined by stereomicroscopically identifying, picking and counting all recognizable IRD grains from the &gt; 1mm dry sieve fraction, which had been obtained from the 125 µm wet sieve fraction of 10 cm^3 ultrasonically dispersed sediment (10 ml syringe sample). Total IRD counts vary between 1 and 300 grains per sample, i.e. 0.1 to 3 IRD grains/cm^3. The IRD lithologies were initially sorted by their physical properties including color, hardness, cleavage, grain size, and texture. Based on these stereomicroscopic observations, we devised a new (and evolving) IRD classification scheme of rocks and rock-forming minerals that was validated and refined by SEM and thin section analysis of the largest observed IRD particles (dropstones). Digital micrographs and thin sections of each classified IRD lithology are presented in dataset (https://doi.pangaea.de/10.1594/PANGAEA.971268).
description: Corresponds to Figure 4.
DOI: 10.1594/pangaea.971281
title: Digital grain and thin section micrographs of petrologically representative IRD particles in sediment core GeoB18530-1

description: The micrographs of the representive IRD particles showcase the pristine physical appearances of the IRD and their mineralogical compositions. Digital images of the pristine IRD samples were captured using Keyence VHX 6000 digital light reflectance microscope whereas that of the thin sections were obtained using Leica EC3 polarizing microscope through the use of LAS EZ software. All images (both digital and thin section images) were subsequently scaled and labelled using imageJ software and Corel Draw.
description: This set of micrographs is a zip file containing 44 microscopic image files in png format (22 particle and 22 thin section micrographs) with explanatory filenames, which are featured in Figures 5 – 8. Each image represents one large, typical specimen of all 22 petrographically classified IRD lithologies.
DOI: 10.1594/pangaea.971287
title: Principal Component Analysis (PCA) of IRD content in Heinrich Event layers (H1-H5a) and interlayers (I1-I5) of sediment core GeoB18530-1

description: The data matrix of 192 classified IRD count data from H1-H5a and I1-I5 (excluding I6 because of too low IRD counts) by 22 IRD lithologies (https://doi.pangaea.de/10.1594/PANGAEA.971280) was row-normalized to 100% to give equal weight to all IRD assemblages independently of their specific IRD abundance, but not column-normalized in order to limit the influence of rare, statistically less relevant IRD lithologies. A Principal Component Analysis (PCA) of this data set reveales well interpretable PCA scores and disparate loadings for the first 5 PCA axes. PC1 reflects the contribution of Ooid-bearing Dolomite IRD, PC2 discriminates Muscovite-Biotite Granite IRD from other silicious IRD species, PC3 delineates Shale IRD vs. Hematite-stained Quartz IRD variability, PC4 quantifies Sucrosic Dolomite IRD and PC5 Microcline IRD percentage. We provide Heinrich layer and interlayer affiliations of all PCA scores, which some PC axes separate well, in particular PC1.
description: Corresponds to Figure 10.