cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.924908
title: Microplastic particles (1-5mm) in soil samples collected in 2019, Northern Germany

description: The study took place in Schleswig-Holstein, Northern Germany, in spring 2019. We have chosen 15 arable fields that are part of the federal soil monitoring scheme by LLUR and as such are representative of the different soil conditions in the region. At each of the 15 study fields, boreholes were placed along the corner points of a square of approximately 40 m edge length. At each of the corner points, three boreholes were drilled down to depths of 10, 20 and 30 cm, respectively. As a consequence, we had 4 x 3 x 3 = 36 sampling units with a wet weight of ~ 200 g soil per unit that integrated over soil depths of 0-10 cm, 10-20 cm and 20-30 cm, respectively, per study site. Each sampling unit was dimensioned with a ruler and stored in an individual glass container. Thus, in this study a total of 540 sampling units with a total of 123.3 kg soil material was inspected for plastic particles between 1 and 5 mm. In the laboratory, the wet soil mass of each sampling unit was quantified and then the soil volume was reduced by wet sieving. To facilitate the sieving, the soil was first soaked in lukewarm tap water in a beaker (1 l) to dissolve loamy aggregates. Aggregates that did not dissolve easily were gently broken down with the fingers and carefully homogenized with a metal whisk. Then the soil was placed on a steel analysis sieve with a mesh size of 1 mm and rinsed under running tap water until only particles of &gt; 1 mm remained. This material was then transferred into glass petri dishes by using a squeeze bottle made of Polyethylene (PE) filled with tap water and a metal spoon. Excess water was removed from the petri dishes with a disposable syringe (PE and Polypropylene (PP)) and an attached injection cannula (outer diameter 0.8 mm; PP and metal). Next, the content of each petri dish was visually examined twice (once by IK Harms and once by S Troegel) for MP under a stereomicroscope with transmitted light and a 133 Trino Zoom (BMS) with two WF 10x/22 mm oculars. All particles that matched the criteria for the proper identification of MP recommended by Hidalgo-Ruz et al. (2012) were picked and individually placed in 96-well micro test plates that were made from Polystyrene (PS).
DOI: 10.1594/pangaea.925009
title: Statistics for the modal kinetic energy from pipe0033 (meanEkn0030-0300)
DOI: 10.1594/pangaea.779923
title: (Appendix) Oxygen and carbon isotope record of bulk sediment samples from ODP Hole 130-807
DOI: 10.1594/pangaea.925012
title: First and second order one-point statistics of pipe0033 (vel_meanstdv0030-0300)
DOI: 10.1594/pangaea.773228
title: Description of lithologic units (VCD) from IODP Hole 316-C0004C

description: Geocode = [m CSF-A] Top Core depth (below sea floor)
DOI: 10.1594/pangaea.925031
title: Time series of consecutive runs from pipe0034 (vel_friction0001)
DOI: 10.1594/pangaea.925032
title: First and second order one-point statistics of pipe0034 (vel_meanstdv0030-0100)
DOI: 10.1594/pangaea.924929
title: Time series of consecutive runs from pipe0024 (vel_friction0001)
DOI: 10.1594/pangaea.746564
title: Meteorological observations during El Septentrión cruise from Montevideo to Santa Catalina started at 1777-05-10
DOI: 10.1594/pangaea.924933
title: Time series from consecutive runs of pipe0024 (vel_Retau0001)
DOI: 10.1594/pangaea.721267
title: Other measurements at 10 m from station Fort Peck (2007-12)
DOI: 10.1594/pangaea.924903
title: Recovery experiment on microploastic polymer types in soil samples

description: To assure the reliability and efficiency of the method we conducted a recovery experiment. For this purpose, we spiked 8 soil samples in a way that each contained 20 particles between 1-5 mm. These were 5 black foils (PE), 5 black fragments (PP), 5 white/green platelets (PE) and 5 fibres (PA). We processed the samples according to the method described above, and inspected them twice. Recovery success was 93%, while samples with high organic content in particular impaired the recovery of fibres.
DOI: 10.1594/pangaea.925138
title: Time series of consecutive runs from pipe0041 (vel_friction0001)
DOI: 10.1594/pangaea.749541
title: Meteorological observations during HAVICK cruise from Palliacatte to Malakka started at 1790-09-27
DOI: 10.1594/pangaea.926634
title: Sea Ice Temperature in different depths measured during the Norwegian North Polar Expedition 1893-1896

description: This dataset contains the observations of sea ice temperature conducted during the Norwegian North Polar Expedition in 1893-1896 onboard the drifting vessel Fram. Observations were obtained mostly daily during large parts of the expedition, after the method was established by F. Nansen. Temperatures were measured under the lead of S. Scott-Hansen in two or four inch wide boreholes using thermometers mounted to wooden poles, that mostly remained positioned in the ice and were pulled up for measurements. Air exchange in the holes was limited by muffs of reindeer skin wound around the wooden poles. Due to ice deformation and other influences, the thermometers needed to be moved several times and did not remain at the same site.The quality of the dataset was questioned already in 1927 by Finn Malmgren in his dissertation "On the Properties of Sea Ice" referring to systematic measurement errors.Data was digitized by C. Katlein manually from a scan of "The Norwegian North Polar Expedition Scientific Results vol. 6 (1905)" Section number 12 "Meteorology" compiled by H. Mohn. The scanned original is available unter https://archive.org/details/norwegiannorthpo06nans (ark:/13960/t9m333v0g).The respective meteorological observations containing the geographic positions of these observations are archived at the National Snow and Ice Data Center (NSIDC):Environmental Working Group. Edited by F. Fetterer and V. F. Radionov. 2000. Environmental Working Group Arctic Meteorology and Climate Atlas, Version 1. [Fram]. Boulder, Colorado USA. NSIDC: National Snow and Ice Data Center. doi: https://doi.org/10.7265/N5MS3QNJ.
DOI: 10.1594/pangaea.925139
title: First and second order one-point statistics of pipe0041 (vel_meanstdv0030-0300)
DOI: 10.1594/pangaea.676990
title: Ozone measurements from station Barrow (1995-02)
DOI: 10.1594/pangaea.925150
title: Time series from consecutive runs of pipe0047 (vel_Retau0001)
DOI: 10.1594/pangaea.755322
title: Radiosonde measurements from station Minamitorishima (2010-10)
DOI: 10.1594/pangaea.498041
title: Physical oceanography from BT during cruise U58X002910B_1958
DOI: 10.1594/pangaea.926664
title: Radiosonde measurements from station Budapest (2020-09)
DOI: 10.1594/pangaea.755567
title: Radiosonde measurements from station Minamitorishima (2010-11)
DOI: 10.1594/pangaea.758607
title: Meteorological synoptical observations from station Ishigakijima (2011-01)
DOI: 10.1594/pangaea.751904
title: Meteorological observations during San Pascual cruise from Cádiz to Cádiz started at 1781-02-06
DOI: 10.1594/pangaea.788944
title: (Table 4) Major element composition of Kaalvallei and Bellsbank minerals
DOI: 10.1594/pangaea.824070
title: Natural gamma radiation from IODP Hole 318-U1355A

description: Geocode = Depth CSF-A (m)
DOI: 10.1594/pangaea.779931
title: Reflection seismic profiles during SONNE cruise SO207 with links to raw data files
DOI: 10.1594/pangaea.779918
title: Preview graphics of swath sonar bathymetry during SONNE cruise SO207
DOI: 10.1594/pangaea.855241
title: Meteorological synoptical observations from station Sapporo (2015-09)
DOI: 10.1594/pangaea.779898
title: Profile of sediment echo sounding during SONNE cruise SO207 with links to ParaSound data files

description: File format description see: Data Acquisition of ATLAS PARASTORE, Atlas Hydrographic (2007), Operator Manual ATLAS PARASTORE, Doc. Id.: ED 6006 G 212:/Version: 4.0/Edition: 05/2007, hdl:10013/epic.35589.d001.
DOI: 10.1594/pangaea.779891
title: (Table 2) Planktonic foraminiferal datums in ODP Hole 130-806B
DOI: 10.1594/pangaea.734422
title: (Table 2.1.1.1) Vertical temperature and brine salinity profiles of sea-ice core IO-15b

description: sea-ice core diameter 9 cm; DEPTH ice/snow measured from ice surface
DOI: 10.1594/pangaea.863683
title: Radiosonde measurements from station Minamitorishima (2016-06)
DOI: 10.1594/pangaea.779903
title: Geochemistry of sediment core 214 recovered during METEOR cruise M72/1

description: Sediment depth was corrected for a loss of the top 35 cm during sampling.
DOI: 10.1594/pangaea.924898
title: Microplastic polymer types from FTIR results of soil samples collected in 2019, Northern Germany

description: The study took place in Schleswig-Holstein, Northern Germany, in spring 2019. We have chosen 15 arable fields that are part of the federal soil monitoring scheme by LLUR and as such are representative of the different soil conditions in the region. At each of the 15 study fields, boreholes were placed along the corner points of a square of approximately 40 m edge length. At each of the corner points, three boreholes were drilled down to depths of 10, 20 and 30 cm, respectively. As a consequence, we had 4 x 3 x 3 = 36 sampling units with a wet weight of ~ 200 g soil per unit that integrated over soil depths of 0-10 cm, 10-20 cm and 20-30 cm, respectively, per study site. Each sampling unit was dimensioned with a ruler and stored in an individual glass container. Thus, in this study a total of 540 sampling units with a total of 123.3 kg soil material was inspected for plastic particles between 1 and 5 mm. In the laboratory, the wet soil mass of each sampling unit was quantified and then the soil volume was reduced by wet sieving. To facilitate the sieving, the soil was first soaked in lukewarm tap water in a beaker (1 l) to dissolve loamy aggregates. Aggregates that did not dissolve easily were gently broken down with the fingers and carefully homogenized with a metal whisk. Then the soil was placed on a steel analysis sieve with a mesh size of 1 mm and rinsed under running tap water until only particles of &gt; 1 mm remained. This material was then transferred into glass petri dishes by using a squeeze bottle made of Polyethylene (PE) filled with tap water and a metal spoon. Excess water was removed from the petri dishes with a disposable syringe (PE and Polypropylene (PP)) and an attached injection cannula (outer diameter 0.8 mm; PP and metal). Next, the content of each petri dish was visually examined twice (once by IK Harms and once by S Troegel) for MP under a stereomicroscope with transmitted light and a 133 Trino Zoom (BMS) with two WF 10x/22 mm oculars. All particles that matched the criteria for the proper identification of MP recommended by Hidalgo-Ruz et al. (2012) were picked and individually placed in 96-well micro test plates that were made from Polystyrene (PS). For their unambiguous identification the sorted particles were analysed with a Fourier transform infrared (FTIR) spectrometer model Spectrum Two™ by PerkinElmer Inc. For the identification of the polymer type, the particles were placed individually on a diamond-/ZnSe crystal plate and eight scans per particle were performed at room temperature with a resolution of 4 cm-1 each. The measured spectrum was then automatically compared with the known spectra of thousands of specific substances stored in a reference library of the PerkinElmer SpectrumTM10 ES software.
DOI: 10.1594/pangaea.779904
title: Geochemistry of sediment core 755 recovered during Poseidon cruise POS317/2

description: Sediment depth was corrected for a loss of the top 35 cm during sampling.
DOI: 10.1594/pangaea.745414
title: Meteorological synoptical observations from station Minamitorishima (2010-06)
DOI: 10.1594/pangaea.922866
title: Stable isotopic composition of three foraminifera species in ODP Hole 160-963D

description: Carbon-rich layers exist at both sides of the Mediterranean Sea sedimentary record and are called sapropels and organic rich layers (ORLs), respectively in the eastern and western basins. They have different levels of organic carbon accumulation and seafloor oxygen deprivation. The most recent sapropel and ORL deposition have a different timing, 10.8-6.1 and 14.5-9.0 ka respectively. Here we investigate oxygen isotopic records of three foraminifera species that occupy different habitats within the Sicily Channel water column since ~ 12.0 ka, thus in the sill between the eastern and western Mediterranean basins. These data are ice volume-corrected, to get information on water masses density variability, and are accompanied by benthic foraminifera 13C measurements to establish Sicily Channel seafloor ventilation. Our results, and the comparison with other chronologically well-constrained Mediterranean records, highlight the connection of the two sub-basins due to monsoon activity. The end of the maximum Nile River flooding at ~ 9.2 ka, and eastern Mediterranean seafloor reventilation above 1800-1500 m depth at ~ 8.2 and 7.2 ka, left a clear signature in the intermediate water isotopic record of the Sicily Channel. Concurrently, the western Mediterranean deep water circulation experienced a significant recovery after a long period of slowdown. We argue that African monsoon weakening was transmitted into the western Mediterranean, through the intermediate layer of circulation, where promoted deep water formation and brought oxygen to the seafloor.
DOI: 10.1594/pangaea.817958
title: (Table 5) Trace element composition of sediments at DSDP Site 65-482

description: Sediment depth is given in mbsf. Empty cells means not determined.
DOI: 10.1594/pangaea.922780
title: Concentration of branched glycerol dialkyl glycerol tetraethers in settling particles of Lake Chala from September 2010- January 2015

description: Settling particles in the water column of Lake Chala, a small (4.2 km2), deep (~90 m), and permanently stratified tropical crater lake at ~880 m above sea level in East Africa (3°19'S, 37°42'E) were collected monthly at 35 m water depth from August 2010 to January 2015 from mid-lake position. The collected material was allowed to settle and stored frozen after decantation of excess water. Prior to analysis, the samples were thawed, filtered over pre-combusted glass fibre filters, and the frozen and freeze dried. Bulk mass flux is expressed as mg m-2 d-1. The concentration of branched glycerol dialkyl glycerol tetraethers (brGDGTs) in the settling particles was analyzed using ultra high performance liquid chromatography-mass spectrometry, separating 5-methyl and 6-methyl brGDGT isomers.
DOI: 10.1594/pangaea.779842
title: Stable isotope ratios in sediment core 159-958
DOI: 10.1594/pangaea.922781
title: Concentration of branched glycerol dialkyl glycerol tetraethers in catchment soils of Lake Chala

description: The fractional abundance of branched glycerol dialkyl glycerol tetraethers (brGDGTs) including 5-methyl and 6-methyl isomers was analyzed in a selection of seven soils collected by Buckles et al. (2014) from various locations within and around the crater catchment of Lake Chala, a small (4.2 km2), deep (~90 m), and permanently stratified tropical crater lake at ~880 m above sea level in East Africa (3°19'S, 37°42'E). The soils were collected between 25 January and 5 February 2010. The selection covers the four different soil types that have been identified based on cluster analysis using the organic carbon content and the concentration and distribution of brGDGTs in a total of 32 soils (Buckles et al., 2014).
DOI: 10.1594/pangaea.859147
title: Matlab scripts for modeled obliquity amplitude modulations

description: The start of the Mesozoic Era is marked by roughly five million years (myr) of Earth system upheavals, including unstable biotic recovery, repeated global warming, ocean anoxia, and perturbations in the global carbon cycle. Intervals between crises were comparably hospitable to life. The causes of these upheavals are unknown, but are thought to be linked to recurrent Siberian volcanism. Here, two marine sedimentary successions at Chaohu and Daxiakou, South China are evaluated for paleoclimate change from astronomical forcing. In these sections, gamma-ray variations indicative of terrestrial weathering reveal enhanced obliquity cycling over prolonged intervals, characterized by a periodicity of 32.8 kiloyear and strong 1.2 myr modulations. This suggests a 22-hour length-of-day and 1.2 myr interaction between the orbital inclinations of Earth and Mars. The 1.2 myr obliquity modulation cycles in these sections are compared with Early Triassic records of global sea-level, temperature, redox and biotic evolution. The evidence collectively suggests that long-term astronomical forcing was involved in the repeated climatic and biotic upheavals that took place throughout the Early Triassic.
description: Supplement to: Li, Mingsong; Huang, Chunju; Hinnov, Linda A; Ogg, James; Chen, Zhong-Qiang; Zhang, Yang (2016): Obliquity-forced climate during the Early Triassic hothouse in China. Geology, 44(8), 623-626
DOI: 10.1594/pangaea.859432
title: Microsatellite genotypic data of Euptelea pleiospermum in STRUCTURE format

description: We sampled leaves from 678 individuals in 21 natural populations (30-36 individuals per population), covering the entire distribution of Euptelea pleiospermum in China.Total DNA was isolated from about 50 mg powdered leaf tissue following the protocol of a DNA extraction kit (Tiangen Biotech Co., LTD., Beijing, China). We used seven fluorescence-labeled microsatellite loci (EP036, EP059, EP081, EP087, EP091, EP278 and EP294; Zhang et al., 2008) to genotype our 678 DNA samples.
description: Supplement to: Wei, Xinzeng (2016): Genetic evidence for central-marginal hypothesis in a Cenozoic relict tree species across its distribution in China. Journal of Biogeography, 43(11), 2173-2185
DOI: 10.1594/pangaea.922783
title: Concentration of branched glycerol dialkyl glycerol tetraethers in surficial sediments of Lake Chala

description: The fractional abundance of branched glycerol dialkyl glycerol tetraethers (brGDGTs) including 5-methyl and 6-methyl isomers was analyzed in surficial lake sediments from Lake Chala, a small (4.2 km2), deep (~90 m), and permanently stratified tropical crater lake at ~880 m above sea level in East Africa (3°19'S, 37°42'E). The lake sediments were collected in January-February 2010 by gravity coring at three different water depths along a transect from close to the creek inlet (at 64.7 m water depth) towards the depocenter of the lake (at 61.6 m water depth).
DOI: 10.1594/pangaea.926761
title: Rock magnetic measurements of sediment core M72/5_620-1
DOI: 10.1594/pangaea.931078
title: Radiosonde measurements from station Lindenberg (2018-10)
DOI: 10.1594/pangaea.913475
title: Time development of modeled lateral tracer distributions in the eastern tropical South Pacific

description: The time development of the modeled lateral tracer distributions shown by the vertical column integral in full time resolution. Two geographical regions in the eastern tropical South Pacific are at focus (1) between 5-30°S, 69-90°W and (2) between 12-22°S, 69-78°W. The four modeled tracer release experiments are called moTRE1-ROMS, moTRE2-CROCO, moTRE3-NEMO, and moTRE4-NEMO (specified in the related publication / thesis). The model runs were performed by Yonss José (for ROMS/CROCO) and Olaf Dutail (for NEMO) to support the observational "Peruvian Oxygen-minimum-zone System Tracer Release Experiment (POSTRE)" that was conducted from Oct. 2015 to Apr. 2017.
DOI: 10.1594/pangaea.793475
title: (Table 1B) Isotopic composition of benthic foraminifers from ODP Hole 167-1012A sediments

description: DEPTH, sediment is given in mcd. Isotopic values reported in this table have not been corrected for species effects.
DOI: 10.1594/pangaea.857991
title: (Table 4) Benthic foraminiferal stable isotopes in the Last Glacial Maximum Time Slice
DOI: 10.1594/pangaea.888993
title: Reconstructed d15N from synthetic targets by using the automated inversion algorithm
DOI: 10.1594/pangaea.924014
title: Age determination of sediment core LR398
DOI: 10.1594/pangaea.924023
title: Grain size analysis of sediment core LR400
DOI: 10.1594/pangaea.924029
title: Element analysis of sediment core LR400
DOI: 10.1594/pangaea.926762
title: U-channel paleomagnetic results of sediment core M72/5_620-1
DOI: 10.1594/pangaea.918620
title: Isotope-enabled large-eddy simulation outputs

description: This dataset includes the outputs from 11 isotope-enabled large-eddy simulations.Simulations are done with the System for Atmospheric Modeling (SAM) non-hydrostatic model.The control simulation ("ctrl") is three-dimensional, with a doubly-periodic domain of 96 km x 96 km. The horizontal resolution is 750 m. There are 96 vertical levels. The simulation is run in radiative-convective equilibrium over an ocean surface with a sea surface temperature (SST) of 30°C.In two other simulations, the imposed SST is varied (26°C, 33°C): "26C" and "33C".In five other simulations, a large-scale vertical velocity forcing is imposed:- large-scale vertical velocity of -60hPa/d peaking at 500hPa: "omegaLSm60"- large-scale vertical velocity of -20hPa/d peaking at 500hPa: "omegaLSm20"- large-scale vertical velocity of +20hPa/d peaking at 500hPa: "omegaLS20"- large-scale vertical velocity of -60hPa/d peaking at 400hPa: "p400"- large-scale vertical velocity of -60hPa/d peaking at 600hPa: "p600"A simulation similar to "ctrl" is run with a horizontal resolution of 200m over a domain of 25.6 x 25.6km: "200m".Two simulations are similar to "ctrl" and "omegaLSm60" but without isotopic fractionation during rain evaporation: "ctrl_nofracrev" and "omegaLSm60_nofracrev".Outputs for simulations used in Risi et al 2020 include 1D variables and 3 variables in the lower troposphere. Outputs for simulations in Risi et al 2021 include 3D variables covering the full troposphere.
DOI: 10.1594/pangaea.924015
title: Age determination of sediment core LR400

description: Principle investigators: Sandra Brügger and Alena Giesche
DOI: 10.1594/pangaea.770271
title: Geochemistry on various tephrostratigraphic records
DOI: 10.1594/pangaea.835078
title: Late Miocene carbon isotope and paleoproductivity record of ODP Site 138-846
DOI: 10.1594/pangaea.779870
title: (Table T2) Selected potentially age-indicative dinoflagellate events of ODP Hole 189-1168A sediments
DOI: 10.1594/pangaea.924019
title: Carbon and Nitrogen concentrations in sediment core LR398
DOI: 10.1594/pangaea.835305
title: Geochemistry, sediment components, and paleoproductivity reconstruction for the Miocene to early Pliocene of ODP Hole 177-1088B
DOI: 10.1594/pangaea.924020
title: Carbon and Nitrogen concentrations in sediment core LR400
DOI: 10.1594/pangaea.832873
title: Subsurface time series of chlorophyll a, Bay of Calvi, Corsica, Mediterranean Sea, 1986

description: Water samples collected using a 2.5 l Niskin bottle; Filtration on GF/C filters; sampling time is local time.
DOI: 10.1594/pangaea.893157
title: Abundance data (raw counts, fraction 63-150 µm) of benthic foraminifera in sediment core tops sampled during the NH1108 cruise to Southern California Bight in July 2011
DOI: 10.1594/pangaea.618844
title: Water temperature profile LD99-CR18a
DOI: 10.1594/pangaea.674468
title: Radiosonde measurements from Neumayer Station (2002-01)
DOI: 10.1594/pangaea.499168
title: Physical oceanography from BT during cruise U90X008390B_1989
DOI: 10.1594/pangaea.678391
title: Ultra-violet measurements from station Payerne (2002-09)

description: UV-b values were originally given in mW/m² and then erroneously imported in W/m² using the same numbers. The numbers have been corrected (divided by 1000) on 2017-01-27. UV reflect values might still contain errors.
DOI: 10.1594/pangaea.848957
title: Meteorological synoptical observations from station Minamitorishima (2015-06)
DOI: 10.1594/pangaea.700890
title: (Table 1) Chemical composition of the carbonate-free fraction of dry bulk sediments from DSDP Hole 149

description: Carbonate has been removed by NaOAc-HOAc treatment, which may add Na to sediments with a high exchange capacity.
DOI: 10.1594/pangaea.924022
title: Grain size analysis of sediment core LR398