cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.25921/7z2j-zn40
title: NOAA/WDS Paleoclimatology - Lake Valencia, Venezuela 12,000 Year Stable Isotope and Carbonate Data

description: We present a palaeoclimate record for northern South America, extending from the latest Pleistocene (~12600 14C yr BP) to present. Climate reconstruction for the Valencia Basin, Venezuela, was based on sediment geochemistry and δ18O records from ostracod and gastropod shells in a 568 cm sediment core. Sediment chronology was established by AMS 14C dating of terrestrial wood fragments. From ~12600 to ~10000 14C yr BP the Valencia basin was drier than present and the coring site, now under 9.4 m of water, was only intermittently wet. After ~10000 14C yr BP, moisture availability increased and lake level rose, permanently covering the core site. From ~10000 to ~8200 14C yr BP, Lake Valencia was hydrologically closed and the isotope records reflect pronounced variability in the ratio of evaporation to precipitation. During the wetter early to middle Holocene (~8200 to ~3000 14C yr BP), lake level was high and water was lost to outflow. Greater moisture availability at this time may have been caused by increased intensity of the annual cycle (with wetter wet seasons and drier dry seasons), a result of large, orbitally driven differences in seasonal insolation. Two brief periods of lower lake level, at ~7000 and ~3300 14C yr BP, are indicated in the oxygen isotope and calcium carbonate records. Since ~3000 14C yr BP, water level in Lake Valencia has been dropping.
description: Lake Valencia, Venezuela Gastropod and Ostracod Stable Isotope and Carbonate Data. Included are isotopes for Heterocypris communis, Cytheridella boldi, Pyrgophorus sp., Cypria obtusa, and %CaCO3
DOI: 10.25921/7mgs-8x07
title: NOAA/WDS Paleoclimatology - Subtropical North Atlantic Stable Isotope Data During the mid-Pleistocene

description: We reconstruct mid-Pleistocene (marine isotope stages (MISs) 13–18) deepwater hydrography at Ocean Drilling Program Site 1063 (4583m water depth, subtropical North Atlantic) using benthic foraminiferal stable isotope records. These new records complete an ~900 kyr long stratigraphy spanning MISs 8–29 (~250–1030 Ka) when combined with previously published records from Site 1063. The results indicate a change in the circulation regime of the abyssal subtropical North Atlantic during MIS 17. Prior to MIS 17, no significant glacial or interglacial d13C gradients are evident between Site 1063 and the deep South Atlantic. After MIS 17, interglacial intervals at Site 1063 are characterized by d13C values that consistently approach those recorded in the deep North Atlantic. Comparing Site 1063 d13C values to 26 additional published records throughout the entire Atlantic basin supports the idea that this d13C increase is unique to the deep North Atlantic. After MIS 17, the basin-wide influence of higher d13C values suggests an increased relative flux of northern sourced bottom waters during interglacial periods. The timing of northern sourced water influence at Site 1063 is consistent with the timing of a shift in the orientation of the Arctic Front. Thus, this shift may signify a link between the northward penetration of relatively warm, saline surface waters into the Norwegian-Greenland Seas stimulating deep convection. Our findings fit well with the model of Imbrie et al. (1993) for the importance of the Nordic heat pump in establishing strong 100 kyr cyclicity in late Pleistocene glacial cycles.

description: Newly produced stable isotope data from ODP Site 1063 (MIS 13-18) and composite Site 1063 stable isotope records (MIS 8-29) tuned to the LR04 stack of Lisiecki and Raymo (2005)
       Provided Keywords: Mid-Pleistocene transition, thermohaline circulation, glacial termination
DOI: 10.25921/74c9-c434
title: NOAA/WDS Paleoclimatology - Little Bahama Bank 900 Year Sediment Grain Size Data

description: Deciphering how the climate system has controlled North Atlantic tropical cyclone activity through the Holocene will require a larger observational network of prehistoric hurricane activity. Problematically, the tropical North Atlantic is dominated by carbonate landscapes that typically preserve poorer quality coastal sediment records in comparison to their temperate-region counterparts (e.g., sedimentation continuity and rate). Coastal karst basins (CKBs), such as sinkholes, blueholes, and underwater caves, are widely distributed on carbonate platforms and contain overlooked sedimentary records. Here we present a millennium of hurricane deposits on the Little Bahama Bank archived in a 165 cm core that was extracted from 69 m below sea level in a bluehole on Great Abaco Island, The Bahamas. The coarse-grained overwash deposits associated with both hurricanes Jeanne (2004) and Floyd (1999) were identified using radioisotopes (137Cs, 14C, 210Pb), and indicate that the bluehole is sensitive to hurricane-induced sedimentation. Over the last millennium, the Little Bahama Bank experienced heightened hurricane activity from 1350 to 1650 AD. The simplest explanation for this active interval is that favorable climate conditions (El Niño, West African Monsoon, and sea surface temperatures) encouraged North Atlantic hurricane activity at that time. However, asynchronous hurricane activity at similar latitudes in the North Atlantic and Gulf of Mexico suggest that regional oceanography has modulated or amplified regional hurricane activity over the last millennium.
description: Grainsize data from Thatchpoint Bluehole, Abaco, Bahamas, van Hengstum et al. (2014), with updated age model as presented in Donnelly et al. (2015).
DOI: 10.25921/7ch6-zf50
title: NOAA/WDS Paleoclimatology - Krusic - Ura-Dhur Composite - PCSN - ITRDB BT021

description: High-resolution tree-ring reconstructions from the Himalaya provide essential context for assessing impacts of future climate change on regional water reserves and downstream agriculture. Here we evaluate a small network of tree-ring chronologies from Bhutan to produce a 638-year summer temperature reconstruction, from 1376 - 2013 CE. Relative to the 1950 - 2013 CE average summer temperature three prominent cold periods stand out, 2 in the mid 15th century, and one in the late 17th century. The warmest period began in the first decade of the 21st century coinciding with the timing of general glacier recession in the eastern Himalaya that continues to the present. The Bhutan temperature reconstruction exhibits a significant correlation to known volcanic eruptions (p = 97%) and anomalously cold periods appear to align with solar irradiance minima in the 15th, late 17th and early 19th centuries, implying a link between solar variability and decadal-scale temperature variability.
description:  NOAA Template Chronology file added 2018-12-19. NOAA Template Raw Measurements file added 2019-04-08.
DOI: 10.25921/7dcw-5a67
title: NOAA/WDS Paleoclimatology - Illinois Pleistocene Gastropod Amino Acid Racemization Data

description: Amino acid racemization (AAR) values measured in gastropod shells are demonstrated to be an important aid for correlations and chronology of fossiliferous loessal, lacustrine, and alluvial Pleistocene units in Illinois, central USA. Aspartic acid (Asx) and Glutamic acid (Glx) D/L values were analyzed on a total of 167 Succinea, Hendersonia, and Pomatiopsis shells from 9 geologic units, with clear stratigraphic relationships, at a total of 18 localities in central and southern Illinois. AAR data from Hendersonia and Succinea are less variable and more normally distributed than Pomatiopsis data, but the latter are locally useful for units lacking preferred genera. Based on analysis of variance tests, Asx- and Glx-D/L data can confidently distinguish among Wisconsin Episode (MIS 2-3), Illinois Episode (MIS 6), late pre-Illinois Episode (MIS 8-14), and early pre-Illinois Episode (MIS 20) deposits. Last glacial Peoria Silt (MIS 2) and Roxana Silt (MIS 3), have mean Asx-D/L values of 0.34-0.37 and 0.42-0.43, respectively, considering all genera. The Illinois Episode Petersburg Silt (~150 ka) has Asx-D/L (X: 0.50-0.56) and Glx- D/L (X: 0.17-0.22) ratios that are statistically distinctive from other units. Three late pre-Illinois Episode units (Harkness Silt Member, Belgium Member, and Banner silt units) have similar Asx D/L values (X: 0.63-0.71) and, along with stratigraphic context, confirm extensive middle Pleistocene glaciations in the region. Using parabolic kinetic age models, depositional ages of ~550-250 ka (MIS 14-8) are implied for these units, with a favored correlation with MIS 12 (~450 ka), a time of especially high global ice volume. The Canteen member, a preglacial alluvium-colluvium below the Harkness Silt, is statistically indistinguishable from other pre-Illinois Episode units with AAR data, but was likely deposited during ~660-480 ka (MIS 16 or 14), based on parabolic age estimates. The paleomagnetically reversed County Line silt (~780-830 ka: MIS 20), with the highest mean AAR values, is the oldest known gastropod-bearing Pleistocene unit in Illinois.
description: D/L aspartic acid and glutamic acid in terrestrial gastropod genera Hendersonia, Succinea, Pomatiopsis in Pleistocene glacigenic sediments in Illinois.
DOI: 10.25921/76gz-rm09
title: NOAA/WDS Paleoclimatology - GISP2 Ice Core 700 Year High Resolution Deuterium Data

description: This paper reviews aspects of climate variability in the North Atlantic sector that may influence the seasonal to decadal scale isotopic signal in the Greenland Ice Sheet Project 2 (GISP2) ice core. Interpretation of the isotopic signal and its spatial applicability at the seasonal level requires investigation into synoptic scale climatology. We discuss possible climatic influences of (1) likely source regions of precipitation reaching the GISP2 site, (2) the characteristics of cyclone activity over the North Atlantic sector, and (3) changes in major atmospheric features such as the mean sea level Icelandic Low and Azores High pressure systems, the North Atlantic Oscillation, and the Baffin trough. Next, we evaluate correlations between the GISP2 deuterium isotopic signal and coastal temperatures with atmospheric pressure patterns, thereby deriving climatic interpretations of the high-resolution isotopic record. The GISP2 site is influenced by both the Icelandic Low to the southeast and Davis Strait/Baffin Bay storms to the southwest and west. The North Atlantic Oscillation influences the GISP2 isotopic signal through the seesaw in winter temperatures between west Greenland and northern Europe. Agreement in excursion directions of GISP2 isotopes and east Greenland and Iceland temperature records is associated with different positions of the Baffin trough in winter and also with anomalous 500-mbar net geostrophic flow. Linkages between isotopic excursion direction and atmospheric variability need to be explored further by comparison with additional seasonal data sets from other Greenland ice cores.
description: These data were produced in the stable isotope laboratory of at the
University of Colorado.
DOI: 10.25921/75xa-mr41
title: NOAA/WDS Paleoclimatology - Lake Telmen, Mongolia 7,000 Year Sediment Data

description: A record of climatic change has been reconstructed for the past 7110 calibrated calendar (cal) years for Lake Telmen, Mongolia, based upon sedimentologic and geomorphic evidence from the lake-watershed system. Lake Telmen is a saline (presently 4 g l-1) closed-basin lake and is therefore sensitive to changes in effective moisture balance. Between 7110 and 6260 cal yr ago, conditions in the Lake Telmen region were hyperarid and a small saline (approximately 20 g l-1) lake was present. Increased effective moisture balance but still arid conditions prevailed between 6260 and 4390 cal yr ago. Since 4390 cal yr ago, generally more humid conditions prevailed in the Lake Telmen region. As the lake deepened, a hypoxic hypolimnion became established below a well-developed summer thermocline resulting in varved sediment accumulation since 4390 cal yr ago. Between about 2710 and 1260 cal yr ago, a greater than present-day effective moisture balance is recorded by a series of four lake highstand terraces. Sedimentologic profiles from lacustrine cores suggest an increase in effective moisture during the past approximately 680 cal yr.
description: Data from cores TN98C2, TN99C1 and TN99C4 from Lake Telmen, Mongolia. Data include sedimentary physical property values for core TN98C2, plus wet bulk density values, loss-on-ignition, pollen and diatom values, carbonate content, and radiocarbon dates for cores TN99C1 and TN99C4.
DOI: 10.25921/7w9j-b030
title: NOAA/WDS Paleoclimatology - South Asian Summer Monsoon Index 1000 Year Reconstruction

description: The South Asian summer monsoon (SASM) is a major atmospheric synoptic climate system affecting nearly a quarter of the human population. Climate proxy data derived from tree rings, ice cores, speleothems, and other sources can all contribute to an understanding of SASM variability prior to instrumental period. Here, we develop an optimal information extraction (OIE) method, which we use to reconstruct the SASM index (SASMI) over the last millennium using 15 tree-ring chronologies. The record generated is significantly correlated (r = 0.7, p < 0.01) with the instrumental SASMI record on annual timescales; this correlation is higher than that obtained in any previous study. The reconstructed SASMI captures 18 of 26 (69%) reordered historical famine events in India over the last millennium; notably, 11 of 16 short events with durations of 1-3 years are accurately depicted in our reconstruction. Moreover, the reconstructed SASMI is positively correlated with variations in total solar irradiance (TSI) on multi-decadal timescales implying that variations in solar activity may influence the SASM. Based on the response of SASM to 34 significant volcanic events using the superposed epoch analysis, the volcanic forcing may drive a weak SASM in the second year of an eruption.
description: Reconstruction of the the South Asian Summer Monsoon Index (SASMI) over the last millennium based on 15 tree-ring chronologies.
DOI: 10.5517/cc54gwm
title: CCDC 153260: Experimental Crystal Structure Determination

description: Related Article: P. Lemoine, A. Mazurier, I. Billy, D. Nguyen-Huy, B. Viossat|2000|Z.Kristallogr.-New Cryst.Struct.|215|523|doi:10.1515/ncrs-2000-0430
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc54gxn
title: CCDC 153261: Experimental Crystal Structure Determination

description: Related Article: R. Kakou-Yao, J.P. Aycard|2000|Z.Kristallogr.-New Cryst.Struct.|215|567|doi:10.1515/ncrs-2000-0447
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc54gyp
title: CCDC 153262: Experimental Crystal Structure Determination

description: Related Article: R. Kakou-Yao, J.P. Aycard|2000|Z.Kristallogr.-New Cryst.Struct.|215|569|doi:10.1515/ncrs-2000-0448
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc53l3y
title: CCDC 152399: Experimental Crystal Structure Determination

description: Related Article: G.Rombaut, S.Golhen, L.Ouahab, C.Mathoniere, O.Kahn|2000|J.Chem.Soc.,Dalton Trans.||3609|doi:10.1039/B003983G
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc53l50
title: CCDC 152401: Experimental Crystal Structure Determination

description: Related Article: Y.Suenaga, T.Kuroda-Sowa, M.Maekawa, M.Munakata|2000|J.Chem.Soc.,Dalton Trans.||3620|doi:10.1039/B003944F
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc53l61
title: CCDC 152402: Experimental Crystal Structure Determination

description: Related Article: Y.Suenaga, T.Kuroda-Sowa, M.Maekawa, M.Munakata|2000|J.Chem.Soc.,Dalton Trans.||3620|doi:10.1039/B003944F
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc4w7v2
title: CCDC 145354: Experimental Crystal Structure Determination

description: Related Article: A.Karacar, M.Freytag, H.Thonnessen, J.Omelanczuk, P.G.Jones, R.Bartsch, R.Schmutzler|2000|Z.Anorg.Allg.Chem.|626|2361|doi:10.1002/1521-3749(200011)626:11<2361::AID-ZAAC2361>3.0.CO;2-R
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc4z52b
title: CCDC 148151: Experimental Crystal Structure Determination

description: Related Article: C.Aubauer, K.Davidge, T.M.Klapotke, P.Mayer, H.Piotrowski, A.Schulz|2000|Z.Anorg.Allg.Chem.|626|2373|doi:10.1002/1521-3749(200011)626:11<2373::AID-ZAAC2373>3.0.CO;2-D
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc4w7w3
title: CCDC 145355: Experimental Crystal Structure Determination

description: Related Article: A.Karacar, M.Freytag, H.Thonnessen, J.Omelanczuk, P.G.Jones, R.Bartsch, R.Schmutzler|2000|Z.Anorg.Allg.Chem.|626|2361|doi:10.1002/1521-3749(200011)626:11<2361::AID-ZAAC2361>3.0.CO;2-R
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc4w7x4
title: CCDC 145356: Experimental Crystal Structure Determination

description: Related Article: A.Karacar, M.Freytag, H.Thonnessen, J.Omelanczuk, P.G.Jones, R.Bartsch, R.Schmutzler|2000|Z.Anorg.Allg.Chem.|626|2361|doi:10.1002/1521-3749(200011)626:11<2361::AID-ZAAC2361>3.0.CO;2-R
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc4w7y5
title: CCDC 145357: Experimental Crystal Structure Determination

description: Related Article: A.Karacar, M.Freytag, H.Thonnessen, J.Omelanczuk, P.G.Jones, R.Bartsch, R.Schmutzler|2000|Z.Anorg.Allg.Chem.|626|2361|doi:10.1002/1521-3749(200011)626:11<2361::AID-ZAAC2361>3.0.CO;2-R
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.3535/1f0-kg9-3gg
title: †Uvigerina striatella Reuss, 1851

description: Digital Specimen for the physical specimen hosted at Naturalis Biodiversity Center.
DOI: 10.3535/840-0x0-y3v
title: Karakaschiceras

description: Digital Specimen for the physical specimen hosted at Naturalis Biodiversity Center.
DOI: 10.3535/4k1-8el-73q
title: †Praestorrsella roestae (Visser, 1951)

description: Digital Specimen for the physical specimen hosted at Naturalis Biodiversity Center.
DOI: 10.3535/ppw-9bw-y90
title: Animalia

description: Digital Specimen for the physical specimen hosted at Naturalis Biodiversity Center.
DOI: 10.3535/v7n-xl3-428
title: Animalia

description: Digital Specimen for the physical specimen hosted at Naturalis Biodiversity Center.
DOI: 10.3535/5qy-y4s-e4g
title: Plantae

description: Digital Specimen for the physical specimen hosted at Naturalis Biodiversity Center.
DOI: 10.3535/kjl-etk-btz
title: Animalia

description: Digital Specimen for the physical specimen hosted at Naturalis Biodiversity Center.
DOI: 10.3535/ase-q8h-g7n
title: Animalia

description: Digital Specimen for the physical specimen hosted at Naturalis Biodiversity Center.
DOI: 10.3535/kne-rx0-grh
title: †Holaster L. Agassiz, 1835

description: Digital Specimen for the physical specimen hosted at Naturalis Biodiversity Center.
DOI: 10.3535/f38-hs6-zj7
title: Riminopsis Revets, 1996

description: Digital Specimen for the physical specimen hosted at Naturalis Biodiversity Center.
DOI: 10.3535/tyh-9jl-xgf
title: Cnidaria

description: Digital Specimen for the physical specimen hosted at Naturalis Biodiversity Center.
DOI: 10.3535/hjn-cyh-914
title: †Protomarssonella kummi (Zedler, 1961)

description: Digital Specimen for the physical specimen hosted at Naturalis Biodiversity Center.
DOI: 10.3535/1vj-1hs-ww5
title: †Spiroclypeus carpaticus (Uhlig, 1886)

description: Digital Specimen for the physical specimen hosted at Naturalis Biodiversity Center.
DOI: 10.3535/fbk-l4a-hrl
title: Animalia

description: Digital Specimen for the physical specimen hosted at Naturalis Biodiversity Center.
DOI: 10.3535/9kk-d04-ypa
title: Animalia

description: Digital Specimen for the physical specimen hosted at Naturalis Biodiversity Center.
DOI: 10.3535/gtr-zax-qrz
title: Serpula Linnaeus, 1758

description: Digital Specimen for the physical specimen hosted at Naturalis Biodiversity Center.
DOI: 10.15468/dl.murtbt
title: Occurrence Download

description: A dataset containing 143 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is Mexico",
 "Geometry POLYGON((-96.32218 15.53360,-83.96057 15.53360,-83.96057 20.48335,-96.32218 20.48335,-96.32218 15.53360))",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "TaxonKey is Bassariscus sumichrasti"
 ]
}

 The dataset includes 143 records from 28 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0020036-250811113504898/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.