cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.932643
title: Lead isotopes in sediment cores JPC32

description: In this dataset we present high resolution Pb isotope records from the Mackenzie Delta area and the Amundsen Gulf. Here we present the authigenic as well as the detrital isotopic composition. With both components it is possible to give an accurate interpretation of meltwater runoff into the Arctic.
DOI: 10.1594/pangaea.805173
title: (Table 2) Sr and Nd isotope ratios and trace element abundances of alteration phases and basalts at ODP Site 136-843

description: Nd isotopes were analyzed as oxides, and the isotopic fractionation correction applied was NdO/ NdO = 0.242436 (Nd/ Nd = 0.241572). The fractionation correction used for Sr was Sr/ Sr = 0.1194. Nd isotopic data are reported relative to the measured Nd/Nd values for the La Jolla Nd standard of 0.511855 ± 0.000012 total range. Sr isotopic data are reported relative to a Sr/Sr value of 0.71022 for NBS 987; the measured Sr/Sr for NBS 987 during the tenure of this study was 0.71021 ± 0.00002 total range. Total procedural blanks are less than 20 pg for Nd and Sm, less than 10 pg Rb, and less than 200 pg for Sr; all blanks are negligible for these analyses. 2SE = two standard errors; for Sr and Nd isotopes the errors are reported relative to the last digit(s).
DOI: 10.1594/pangaea.805890
title: (Table 1) Cadmium and nutrient concentration of surface waters sampled during POLARSTERN cruise ANT-XXIV/III

description: The High Nutrient Low Chlorophyll (HNLC) Southern Ocean plays a key role in regulating the biological pump and the global carbon cycle. Here we examine the efficacy of stable cadmium (Cd) isotope fractionation for detecting differences in biological productivity between regions. Our results show strong meridional Cd isotope and concentration gradients modulated by the Antarctic Fronts, with a clear biogeochemical divide located near 56°S. The coincidence of the Cd isotope divide with the Southern Boundary of the Antarctic Circumpolar Current (ACC),together with evidence for northward advection of the Cd signal in the ACC, demonstrate that Cd isotopes trace surface ocean circulation regimes. The relationships between Cd isotope ratios and concentrations display two negative correlations, separating the ACC and Weddell Gyre into two distinct Cd isoscapes. These arrays are consistent with Rayleigh fractionation and imply a doubling of the isotope effect due to biological consumption of Cd during water transport from the Weddell Gyre into the ACC. The increase in magnitude of Cd isotope fractionation can be accounted for by differences in the phytoplankton biomass, community composition, and their physiological uptake mechanisms in the Weddell Gyre and ACC, thus linking Cd isotope fractionation to primary production and the global carbon cycle.
description: Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150
description: Supplement to: Abouchami, Wafa; Galer, Stephen J G; de Baar, Hein J W; Alderkamp, Anne-Carlijn; Middag, Rob; Laan, Patrick; Feldmann, H; Andreae, Meinrat O (2011): Modulation of the Southern Ocean cadmium isotope signature by ocean circulation and primary productivity. Earth and Planetary Science Letters, 305(1-2), 83-91
DOI: 10.1594/pangaea.856807
title: (Table 2) Zircons analyses from tonalite and oxide gabbro of the mid-ocean ridge from ODP Hole 176-735B
DOI: 10.15468/dl.85yef8
title: Occurrence Download

description: A dataset containing 282253 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is United States of America",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "StateProvince is Texas",
 "TaxonKey is Hymenoptera"
 ]
}

 The dataset includes 282253 records from 86 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0072083-241126133413365/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.1594/pangaea.861359
title: Radiogenic neodymium, strontium and lead isotopes of authigenic and detrital sedimentary phases and stable oxygen and carbon isotopes of benthic foraminifera from gravity core SO213/2_59-2 (central South Pacific)
DOI: 10.1594/pangaea.708710
title: (Table 2) Uranium concentration and isotopic ratios in pore fluids of ODP Hole 162-984A
DOI: 10.1594/pangaea.909079
title: Authigenic PB isotope composition of surface sediments from the Southern Ocean
DOI: 10.1594/pangaea.940050
title: Neon processing and analysis data

description: (1) Computed by comparison to 20Ne signal in air pipettes. 1-sigma uncertainty includes measurement uncertainty of 20Ne signal in this analysis and the reproducibility of the air pipette signal(2) Computed by comparison to 21Ne signal in air pipettes. 1-sigma uncertainty includes measurement uncertainty of 21Ne signal in this analysis and the reproducibility of the air pipette signal(3) Computed by comparison to 22Ne signal in air pipettes. 1-sigma uncertainty includes measurement uncertainty of 21Ne signal in this analysis and the reproducibility of the air pipette signal(4) Isotope ratio measured internally during each analysis and corrected for mass discrimination based on the air standard
DOI: 10.1594/pangaea.711524
title: (Table 1) Os concentrations and 187Os/186Os, 187Os/188Os ratios for DSDP Hole 73-521 metalliferous sediments
DOI: 10.1594/pangaea.940045
title: Aluminum isotope measurements from the detrital river sediment in central Cuba
DOI: 10.1594/pangaea.940046
title: Aluminum and beryllium isotope concentrations and ratios from the detrital river sediment in central Cuba

description: * = We used only the DUP Be-10 measurement because we re-leached the sample and concluded the first one was not clean enough.
DOI: 10.1594/pangaea.385647
title: Radionuclides from sediment trap AWI400/1
DOI: 10.1594/pangaea.705055
title: (Table 1) 3He/4He and 4He/20Ne ratios in pore water and gas in deep-sea sediments at DSDP Site 92-599B
DOI: 10.1594/pangaea.940043
title: Beryllium isotope measurements from the detrital river sediment in central Cuba

description: Isotopic analysis was conducted at PRIME Laboratory; ratios were normalized against standard 07KNSTD3110 with an assumed ratio of 2850 x 10^-15 (Nishiizumi et al., 2007).
DOI: 10.1594/pangaea.705056
title: (Table 1) 3He/4He and 4He/20Ne ratios in pore water and gas in deep-sea sediments at DSDP Site 92-601A
DOI: 10.15468/dl.kfygb7
title: Occurrence Download

description: A dataset containing 403149 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Eschscholzia californica Cham., Myosotis alpestris F.W.Schmidt, Pseudoroegneria spicata (Pursh) Á.Löve, Achnatherum hymenoides (Roem. & Schult.) Barkworth, Achnatherum hymenoides (Roem. & Schult.) Barkworth, Pseudoroegneria spicata (Pursh) Á.Löve, Nassella pulchra (Hitchc.) Barkworth, Bouteloua gracilis (Kunth) Lag. ex Griffiths, Bouteloua gracilis (Kunth) Lag. ex Griffiths, Pepsis thisbe Lucas, 1895, Apis mellifera Linnaeus, 1758, Cantharellus californicus D.Arora & Dunham, Boletus edulis Bull., Aquilegia coerulea James, Philadelphus lewisii Pursh, Lewisia rediviva Pursh, Yucca glauca Nutt., Berberis aquifolium Pursh, Calochortus nuttallii Torr., Cantharellus formosus Corner, Cantharellus formosus Corner, Ariolimax columbianus (A.Gould, 1851))",
 "Country is one of (United States of America, Canada)",
 "HasCoordinate is true",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 403149 records from 371 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0072082-241126133413365/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.1594/pangaea.890927
title: Uranium, thorium and protactinium activity concentrations and isotopic ratios and opal content in EW9209-1JPC sediment core
DOI: 10.1594/pangaea.871943
title: (Table S1) Results of Nd measurements on uncleaned, mixed-planktonic foraminiera, bulk sediment leachates and detrital material

description: Combined seawater radiogenic hafnium (Hf) and neodymium (Nd) isotope compositions were extracted from bulk sediment leachates and foraminifera of Site 1088, ODP Leg 177, 2082 m water depth on the Agulhas Ridge. The new data provide a continuous reconstruction of long and short-term changes in ocean circulation and continental weathering inputs since the Mid-Miocene. Due to its intermediate water depth the sediments of this core sensitively recorded changes in admixture of North Atlantic Deep Water (NADW) to the Antarctic Circumpolar Current (ACC) as a function of the strength of the Atlantic Meridional Overturning Circulation (AMOC).Nd isotope compositions (epsilon-Nd) range from -7 to -11 with glacial values generally 1 to 3 units more radiogenic than during the interglacials of the Quaternary. The data reveal episodes of significantly increased AMOC strength during late Miocene and Pliocene warm periods whereas peak radiogenic epsilon-Nd values mark a strongly diminished AMOC during the major intensification of Northern Hemisphere Glaciation near 2.8 Ma and in the Pleistocene after 1.5 Ma.In contrast, the Hf isotope compositions (epsilon-Hf) show an essentially continuous evolution from highly radiogenic values of up to +11 during the Miocene to less radiogenic present day values (+2 to +4) during the late Quaternary. The data document a long-term transition in dominant weathering inputs, where inputs from the South America are replaced by those from Southern Africa. Moreover, radiogenic peaks provide evidence for the supply of radiogenic Hf originating from Patagonian rocks to the Atlantic sector of the Southern Ocean via dust inputs.
description: Supplement to: Dausmann, Veit; Frank, Martin; Gutjahr, Marcus; Rickli, Jörg Dominik (2017): Glacial reduction of AMOC strength and long term transition in weathering inputs into the Southern Ocean since the Mid Miocene: Evidence from radiogenic Nd and Hf isotopes. Paleoceanography, 32(3), 265-283
DOI: 10.1594/pangaea.705053
title: (Table 1) 3He/4He and 4He/20Ne ratios in pore water and gas in deep-sea sediments at DSDP Site 92-597A
DOI: 10.1594/pangaea.705054
title: (Table 1) 3He/4He and 4He/20Ne ratios in pore water and gas in deep-sea sediments at DSDP Site 92-598A
DOI: 10.1594/pangaea.742954
title: Helium isotope record, CaCO3 concentration and accumulation rate of ODP Site 138-849 (Table 2)

description: The cause of the 100 kyr glacial–interglacial cycles during the past 800 kyr is one of the fundamental puzzles in paleoclimatology. The widely accepted Milankovitch theory, relating earth's climate cycles to variations in insolation caused by periodic changes in orbital parameters, has difficulties to explain the predominant 100 kyr rhythm. Although earth's eccentricity varies with a period of 100 kyr, the resulting change in insolation is too small to produce the corresponding climate cycle by direct forcing (Imbrie et al., 1993; doi:10.1029/93PA02751. In order to solve the '100 kyr problem', Muller and MacDonald (1995, doi:10.1038/377107b0; 1997, doi:10.1126/science.277.5323.215; Proc. Nat. Acad. Sci. USA 94 (1997b) 8329) proposed an alternative orbital but non-Milankovitch mechanism attributing the glacial cycles to regular variations in the accretion of interplanetary dust particles (IDP) caused by 100 kyr cycles in the orbital inclination of the earth. To test this controversial hypothesis, we study the IDP accumulation in deep-sea sediments from a period in the early Pleistocene. We find apparent 41 kyr cycles but no 100 kyr periodicity in the IDP accumulation rate. As there is no known mechanism to produce 41 kyr cycles in IDP supply from space, we conclude that the 41 kyr cycles are caused by the dynamics of sediment accumulation, and that changes in the IDP flux do not drive the Pleistocene glacial cycles.
description: Age after Mix et al., (1995). Sediment depth is revised composite depth (rmcd). For stable oxygen isotope record see Mix et al. (1995) dataset: doi:10.1594/PANGAEA.60255
description: Supplement to: Winckler, Gisela; Anderson, Robert F; Stute, Martin; Schlosser, Peter (2004): Does interplanetary dust control 100 kyr glacial cycles? Quaternary Science Reviews, 23(18-19), 1873-1878
DOI: 10.1594/pangaea.900635
title: Radiosonde measurements from Neumayer Station (2018-02)

description: The meteorological observatory Neumayer typically launches one radiosonde per day around 12UTC. At least weekly the sonde has an ozone sensor attached. Sondes are released from the roof of the station building. The measurement interval of the raw data is typically 1s. Data is quality controlled: Erroneous data is removed (technical issues). Partial pressure ozone is manually validated for plausibility.
description: Station altitude is 43 m, the launch site is located 25 m higher at 68 m above sea level. The first row of each sounding holds surface data for TTT, RH, ff and dd, which is not acquired by the radiosonde. The measuring height of TTT and RH is 2m, and 10m for dd and ff. The first pressure value of each profile is derived from surface pressure measurements, reduced to the indicated altitude. A change in the sounding system results in different altitudes where the profiles start, so the lowermost altitudes are either 43 m or 68 m. Soundings were performed using a different method (Radiosonde, Vaisala, RS41-SGP) on 2018-02-12T00:00, 2018-02-16T12:00, 2018-02-17T12:00, 2018-02-18T12:00, 2018-02-19T18:00, 2018-02-20T12:00, 2018-02-22T12:00 and 2018-02-23T18:00. For soundings 2018-02-10T00:00 and 2018-02-12T00:00 the parameters "ALTITUDE [m] (Altitude) * COMMENT: Geopotential height above sea level integrated from pressure, temperature and humidity" and "Height, geometric [m] (h geom) * COMMENT: derived from GPS receiver mounted on radiosonde with respect to WGS84 reference ellipsoid" were reduced by 3m due to a misconfigured offset in the sounding unit.
DOI: 10.1594/pangaea.924205
title: Protactinium, thorium, uranium and opal of sediment core GeoB1515
DOI: 10.1594/pangaea.932645
title: Lead isotopes in sediment cores JPC19

description: In this dataset we present high resolution Pb isotope records from the Mackenzie Delta area and the Amundsen Gulf. Here we present the authigenic as well as the detrital isotopic composition. With both components it is possible to give an accurate interpretation of meltwater runoff into the Arctic.
DOI: 10.1594/pangaea.932644
title: Lead isotopes in sediment cores JPC9

description: In this dataset we present high resolution Pb isotope records from the Mackenzie Delta area and the Amundsen Gulf. Here we present the authigenic as well as the detrital isotopic composition. With both components it is possible to give an accurate interpretation of meltwater runoff into the Arctic.
DOI: 10.1594/pangaea.707889
title: (Table 2) Os concentrations and 187Os/188Os ratios of leached sediment from ODP Hole 199-1219A

description: Sediment depth (m) is revised meters composite depth (rmcd)
DOI: 10.1594/pangaea.940042
title: Blank data for aluminum measurements
DOI: 10.1594/pangaea.943685
title: Beryllium isotopes composition of layers from the top side of Mn nodule SO11_262DK (262GBHF)

description: Attempts have been made to study the entire growth history of a manganese nodule from the northern part of Peru Basin in the Pacific using radiochemical profiles of 230Th232Th, 227Th230Th, and 10Be9Be. Combined with the observations on Fe-Mn contents and textural variation, the radiochemical data indicate that the nodule grew more or less concentrically throughout most of its existence since it formed 1.5 my ago, receiving Mn from both bottom water and pore water. This condition appeared to have changed about 180 ky ago when the growth became asymmetric in that the top and bottom sides became fixed in their relative positions on the sea floor. Since then, the bottom side accreted with a fast rate of close to 200 mm/my, apparently fueled by the supply of diagenetically remobilized Mn in pore water from the sediment substrate. In the meantime, the top side accumulated at about 6 mm/my, a value which is in the normal range for deep-sea nodules having their Mn supplied from the hydrogenous source.
description: Digitized Table 4a, Page 2405; Points of measurements are illustrated in Fig. 1..From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions. At the time it was the most extended data compilation on ferromanganese deposits world wide. Initially published in a proprietary format incompatible with present day standards it was jointly decided by AWI and NOAA to transcribe this legacy data into PANGAEA. This transfer is augmented by a careful checking of the original sources when available and the encoding of ancillary information (sample description, method of analysis..) not present in the NOAA-MMS database.
DOI: 10.1594/pangaea.929751
title: Late Glacial and Holocene lead isotopes and lead concentration data from Füramoos, Southwestern Germany

description: Lead concentration and stable isotopes were analysed using inductively coupled plasma mass spectrometry (ICP-MS) in samples from an ombrotrophic peat bog at Füramoos (southern Germany).
DOI: 10.15468/dl.e6kq8m
title: Occurrence Download

description: A dataset containing 772 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is Freshwater Lamprey Survey Data"
 ]
}

 The dataset includes 772 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0072087-241126133413365/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.1594/pangaea.875110
title: Intercomparison of 10Be measurements by decay and Accelerator mass spectrometry (AMS) techniques for layers inside ferromanganese crusts of the Pacific Ocean (ANTP-058D and ARIES-039D)

description: Cosmogenic beryllium-10 activities have been measured in marine accumulations of up to about 6 m.y age by conventional beta counting technique and by accelerator mass spectrometry. The two sets of data at 10Be levels of 109-1010 atoms/g agree within the absolute errors of the two methods. The detection limit for 10Be by the accelerator mass spectrometry is about five orders of magnitude lower than that with the beta counting method.
description: From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions. At the time it was the most extended data compilation on ferromanganese deposits world wide. Initially published in a proprietary format incompatible with present day standards it was jointly decided by AWI and NOAA to transcribe this legacy data into PANGAEA. This transfer is augmented by a careful checking of the original sources when available and the encoding of ancillary information (sample description, method of analysis...) not present in the NOAA-MMS database.
description: Supplement to: Sharma, P; Somayajulu, Bammidipati L K; Lal, D; Wolfli, Willy; Bonani, Georges; Stoller, Ch; Suter, Martin; Beer, Jürg (1983): Particle accelerator measurements of10Be in marine accumulations: Intercomparison with beta counting method. Journal of Earth System Science, 92(1), 1-4
DOI: 10.1594/pangaea.712883
title: (Appendix A) Authigenic 10Be and 9Be concentrations of sediments from ODP Hole 172-1063A

description: Sediment depth (m) is composite depth (mcd)
DOI: 10.1594/pangaea.711521
title: (Table 1) Os and Sr isotope ratios for DSDP Leg 92 metalliferous carbonates
DOI: 10.1594/pangaea.833727
title: (Table 2) Age determination of Desmophyllum dianthus samples
DOI: 10.1594/pangaea.847713
title: (Table 1a) Marine Osmium records during the late Paleocene thermal maximum in DSDP Hole 22-213
DOI: 10.1594/pangaea.847714
title: (Table 1b) Marine Osmium records during the late Paleocene thermal maximum in DSDP Hole 80-549A
DOI: 10.1594/pangaea.934455
title: Osmium isotopic data of Hauterivian carbonate samples obtained from Fiume Bosso section, central Italy

description: Data sets include the osmium and carbon isotopic information of the limestone samples collected from the Fiume Bosso section (43°31'07.2N 12°34'15.4E), central Italy. Os and carbon isotopic measurements were conducted from December 2019 to October 2020 to reconstruct paleo-marine Os and carbon isotopic variations. Os isotopic ratios were measured with thermal ionization mass spectrometry (TRITON, Thermo Fisher Scientific, USA) and carbon isotopic ratio were measured with isotope ratio mass spectrometry (Delta V plus, Thermo Fisher Scientific, USA). Our data covers from the upper Hauterivian to the lower Barremian of the Lower Cretaceous.
DOI: 10.1594/pangaea.938379
title: Os isotopic record of Hauterivian carbonate samples from Fiume Bosso section (central Italy), which were obtained by the weak-leaching method

description: Data sets contain the osmium isotope information of the limestone samples from the Fiume Bosso section (43°31'07.2N 12°34'15.4E), central Italy. Os isotopic analysis was conducted in August 2021 to reconstruct paleo-marine Os and carbon isotopic variation. Os were separated by the weak-leaching method (1M HCl) and Os isotopic ratios were measured with thermal ionization mass spectrometry (TRITON, Thermo Fisher Scientific, USA). Our Os data covers the time ranges from the upper Hauterivian to the lower Barremian of the Lower Cretaceous.
description: The data includes Os and Re concentrations and measured (present-day) and initial (age-corrected) osmium isotopic ratios (187Os/188Osm and 187Os/188Osi) of limestone samples acquired from the Fiume Bosso section. Os was separated from the limestone samples using weak-leaching methods.
DOI: 10.1594/pangaea.708171
title: (Appendix A) Helium isotope concentrations and ratios for leached replicates of sediments from ODP Hole 130-806B

description: To maximize the size of the samples analyzed, aliquots of 2 to 3 g were leached in 10% acetic acid for 6 h to remove CaCO3. This resulted in residues of about 250 mg of noncarbonate material, which were suitable for handling in the gas extraction system. Samples were then rinsed in distilled water, centrifuged to isolate the residue, ovendried at 60°C overnight, and wrapped in tin foil ready for loading into the Caltech Noble Gas Laboratory all-metal gas extraction system. Comparison between 2 to 3 g leached and 0.5 g unleached (bulk) aliquots of the same sample shows that helium in the samples is not affected by acetic acid leaching.