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  • PANGAEA  (46)
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  • 11
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    Stable carbon and hydrogen isotope record of n-Alkanoic acids of sediment core SO189/2_144KL (2014)
    PANGAEA
    In:  Supplement to: Niedermeyer, Eva M; Sessions, Alex L; Feakins, Sarah J; Mohtadi, Mahyar (2014): Hydroclimate of the western Indo-Pacific Warm Pool during the past 24,000 years. Proceedings of the National Academy of Sciences, 111(26), 9402-9406, https://doi.org/10.1073/pnas.1323585111
    Details
    Publication Date: 2023-06-27
    Description: The Indo-Pacific Warm Pool (IPWP) is a key site for the global hydrologic cycle, and modern observations indicate that both the Indian Ocean Zonal Mode (IOZM) and the El Niño Southern Oscillation exert strong influence on its regional hydrologic characteristics. Detailed insight into the natural range of IPWP dynamics and underlying climate mechanisms is, however, limited by the spatial and temporal coverage of climate data. In particular, long-term (multimillennial) precipitation patterns of the western IPWP, a key location for IOZM dynamics, are poorly understood. To help rectify this, we have reconstructed rainfall changes over Northwest Sumatra (western IPWP, Indian Ocean) throughout the past 24,000 y based on the stable hydrogen and carbon isotopic compositions (dD and d13C, respectively) of terrestrial plant waxes. As a general feature of western IPWP hydrology, our data suggest similar rainfall amounts during the Last Glacial Maximum and the Holocene, contradicting previous claims that precipitation increased across the IPWP in response to deglacial changes in sea level and/or the position of the Intertropical Convergence Zone. We attribute this discrepancy to regional differences in topography and different responses to glacioeustatically forced changes in coastline position within the continental IPWP. During the Holocene, our data indicate considerable variations in rainfall amount. Comparison of our isotope time series to paleoclimate records from the Indian Ocean realm reveals previously unrecognized fluctuations of the Indian Ocean precipitation dipole during the Holocene, indicating that oscillations of the IOZM mean state have been a constituent of western IPWP rainfall over the past ten thousand years.
    Keywords: Indian Ocean; KL; Piston corer (BGR type); SO189/2; SO189/2_144KL; Sonne; SUMATRA
    Type: Dataset
    Format: application/zip, 2 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 12
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    (Table 3a) Carbon isotopic composition of n-alkanes and n-alkanoic acid biomarkers of DSDP Hole 24-231
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: 24-231; AGE; Deep Sea Drilling Project; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Glomar Challenger; Indian Ocean/Gulf of Aden/BASIN; Leg24; Mass spectrometer Finnigan Delta Plus; n-Alkane C25, δ13C; n-Alkane C25, δ13C, standard deviation; n-Alkane C27, δ13C; n-Alkane C27, δ13C, standard deviation; n-Alkane C29, δ13C; n-Alkane C29, δ13C, standard deviation; n-Alkane C31, δ13C, standard deviation; n-Alkane C32, δ13C; n-Alkane C33, δ13C; n-Alkane C33, δ13C, standard deviation; n-Alkanoic acid C24, δ13C; n-Alkanoic acid C24, δ13C, standard deviation; n-Alkanoic acid C26, δ13C; n-Alkanoic acid C26, δ13C, standard deviation; n-Alkanoic acid C28, δ13C; n-Alkanoic acid C28, δ13C, standard deviation; n-Alkanoic acid C30, δ13C; n-Alkanoic acid C30, δ13C, standard deviation; n-Alkanoic acid C32, δ13C; n-Alkanoic acid C32, δ13C, standard deviation; n-Alkanoic acid C34, δ13C; n-Alkanoic acid C34, δ13C, standard deviation; Sample code/label; Δδ13C
    Type: Dataset
    Format: text/tab-separated-values, 165 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 13
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    Stable carbon isotope record of n-C30 alkanoic acid of sediment core SO189/2_144KL (2014)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: AGE; Indian Ocean; KL; n-Alkanoic acid C30, δ13C; n-Alkanoic acid C30, δ13C, standard deviation; Piston corer (BGR type); SO189/2; SO189/2_144KL; Sonne; SUMATRA
    Type: Dataset
    Format: text/tab-separated-values, 62 data points
    Location Call Number Limitation Availability
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  • 14
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    Stable hydrogen isotope records of alkanoic acids of sediment core SO189/2_144KL (2014)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: AGE; Corrected; Indian Ocean; KL; n-Alkanoic acid C30, δ2H, standard deviation; n-Alkanoic acid C30, δD; n-Alkanoic acid C32, δ2H, standard deviation; n-Alkanoic acid C32, δD; Piston corer (BGR type); SO189/2; SO189/2_144KL; Sonne; SUMATRA
    Type: Dataset
    Format: text/tab-separated-values, 792 data points
    Location Call Number Limitation Availability
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  • 15
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    (Table 1) Isotopic composition of organic compinents of DSDP Hole 24-231 (2013)
    PANGAEA
    In:  Supplement to: Feakins, Sarah J (2013): Pollen-corrected leaf wax D/H reconstructions of northeast African hydrological changes during the late Miocene. Palaeogeography, Palaeoclimatology, Palaeoecology, 374, 62-71, https://doi.org/10.1016/j.palaeo.2013.01.004
    Details
    Publication Date: 2023-06-27
    Description: Plant leaf wax hydrogen isotope (dDwax) reconstructions are increasingly being used to reconstruct hydrological change. This approach is based upon the assumption that variations in hydroclimatic variables, and in particular, the isotopic composition of precipitation (dDP), dominate dDwax. However modern calibration studies suggest that offsets between plant types may bias the dDwax hydrological proxy at times of vegetation change. In this study, I pair leaf wax analyses with published pollen data to quantify this effect and construct the first vegetation-corrected hydrogen isotopic evidence for precipitation (dDcorrP). In marine sediments from Deep Sea Drilling Program Site 231 in the Gulf of Aden spanning 11.4-3.8 Ma (late Miocene and earliest Pliocene), I find 77 per mil swings in dDwax that correspond to pollen evidence for substantial vegetation change. Similarities between dDP and dDcorrP imply that the hydrological tracer is qualitatively robust to vegetation change. However, computed vegetation corrections can be as large as 31 per mil indicating substantial quantitative uncertainty in the raw hydrological proxy. The resulting dDcorrP values quantify hydrological change and allow us to identify times considerably wetter than modern at 11.09, 7.26, 5.71 and 3.89 Ma. More generally, this novel interpretative framework builds the foundations of improved quantitative paleohydrological reconstructions with the dDwax proxy, in contexts where vegetation change may bias the plant-based proxy. The vegetation corrected paleoprecipitation reconstruction dDcorrP, represents the best available estimate as proof-of-concept, for an approach that I hope will be refined and more broadly applied.
    Keywords: 24-231; AGE; Carbon, organic, total; Deep Sea Drilling Project; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Glomar Challenger; Indian Ocean/Gulf of Aden/BASIN; Leg24; n-Alkanoic acid C28, δ13C; n-Alkanoic acid C28, δ13C, standard deviation; n-Alkanoic acid C28, δ2H, standard deviation; n-Alkanoic acid C28, δD; n-Alkanoic acid C30, δ13C; n-Alkanoic acid C30, δ13C, standard deviation; n-Alkanoic acid C30, δ2H, standard deviation; n-Alkanoic acid C30, δD; Replicates; Sample code/label; δ13C, organic carbon
    Type: Dataset
    Format: text/tab-separated-values, 299 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 16
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    Trace metal and black carbon data in aerosol, seawater, and floodwater samples taken in southern California during the 2017 Thomas Fire (2021)
    PANGAEA
    Details
    Publication Date: 2023-07-11
    Description: Aerosol, seawater, and floodwater samples were taken during the 2017 California Thomas Fire and subsequent flash flood event. These samples were used to examine how fire-flood sequences affect metal and black carbon delivery to coastal waters, such as the Santa Barbara Basin (SBB). On day 11 of the Thomas Fire, aerosols sampled at sea level under a smoke plume over the SBB found high levels of PM2.5, levoglucosan, and black carbon (average: 49 μg/m^3, 1.05 μg/m^3, 14.93 μg/m^3, respectively) and both soluble and total aerosol metal concentrations were consistent with a forest fire signature. Metal, nutrient, and chlorophyll a concentrations in surface seawater (average: 2.42 nM Fe, 0.14 µM phosphate, and 0.44 µgChla/L) were similar to concentrations during non-fire conditions, thus we could not establish fire-related increases in the SBB surface waters. On days 37 to 40 of the fire, before, during, and after a flash flood in the Ventura River, dissolved organic carbon, dissolved black carbon, and dissolved metal concentrations were positively correlated with discharge. Our findings confirm that black carbon and metals were released by the Thomas Fire and transported by both atmospheric and fluvial pathways.
    Keywords: black carbon; Santa Barbara Basin; Thomas Fire; trace metals; Ventura River; wildfire
    Type: Dataset
    Format: application/zip, 3 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 17
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    Trace metal and black carbon data in aerosol samples taken in southern California during the 2017 Thomas Fire (2021)
    PANGAEA
    Details
    Publication Date: 2023-07-11
    Keywords: black carbon; Black carbon, aerosol; Cadmium; Cadmium, soluble; Cobalt; Cobalt, soluble; Copper; Copper, soluble; Date/time end; Date/time start; Iron; Iron, soluble; Lead; Lead, soluble; Levoglucosan; Manganese; Manganese, soluble; Manganese, total; Nickel; Nickel, soluble; Particulate matter, 〈 2.5 µm; Sample ID; Sample volume; Santa_Barbara_Basin_Aerosols; Santa Barbara Basin; Size fraction; Thomas Fire; trace metals; Ventura River; wildfire; Zinc; Zinc, soluble
    Type: Dataset
    Format: text/tab-separated-values, 383 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 18
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    Concentrations and relative abundance of GDGT soil profiles along a Serengeti transect (2022)
    PANGAEA
    Details
    Publication Date: 2023-12-22
    Keywords: Archaeol; Archaeol and Caldarchaeol Ecometric index; Banagi; Branched and isoprenoid tetraether index; Branched glycerol dialkyl glycerol tetraether; Branched glycerol dialkyl glycerol tetraether, Ia; Branched glycerol dialkyl glycerol tetraether, Ia, fractional abundance; Branched glycerol dialkyl glycerol tetraether, Ib; Branched glycerol dialkyl glycerol tetraether, Ib, fractional abundance; Branched glycerol dialkyl glycerol tetraether, Ic; Branched glycerol dialkyl glycerol tetraether, Ic, fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIa; Branched glycerol dialkyl glycerol tetraether, IIa, fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIa'; Branched glycerol dialkyl glycerol tetraether, IIa', fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIb; Branched glycerol dialkyl glycerol tetraether, IIb, fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIb'; Branched glycerol dialkyl glycerol tetraether, IIb', fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIc; Branched glycerol dialkyl glycerol tetraether, IIc, fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIc'; Branched glycerol dialkyl glycerol tetraether, IIc', fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIIa; Branched glycerol dialkyl glycerol tetraether, IIIa, fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIIa'; Branched glycerol dialkyl glycerol tetraether, IIIa', fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIIb; Branched glycerol dialkyl glycerol tetraether, IIIb, fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIIb'; Branched glycerol dialkyl glycerol tetraether, IIIb', fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIIc; Branched glycerol dialkyl glycerol tetraether, IIIc, fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIIc'; Branched glycerol dialkyl glycerol tetraether, IIIc', fractional abundance; Carbon, organic, total; Cyclization ratio of branched tetraethers; DEPTH, soil; Depth comment; Elevation of event; Event label; Isomer ratio of 6-methyl branched glycerol dialkyl glycerol tetraethers; Isoprenoid acyclic glycerol dialkyl glycerol tetraether; Isoprenoid acyclic glycerol dialkyl glycerol tetraether, fractional abundance; Isoprenoidal glycerol dialkyl glycerol tetraethers; Isoprenoid dicyclic glycerol dialkyl glycerol tetraether; Isoprenoid dicyclic glycerol dialkyl glycerol tetraether, fractional abundance; Isoprenoid glycerol dialkyl glycerol tetraether, 5; Isoprenoid glycerol dialkyl glycerol tetraether, 5, fractional abundance; Isoprenoid glycerol dialkyl glycerol tetraether, 5'; Isoprenoid glycerol dialkyl glycerol tetraether, 5', fractional abundance; Isoprenoid glycerol dialkyl glycerol tetraether, per unit mass total organic carbon; Isoprenoid glycerol dialkyl glycerol tetraether/branched glycerol dialkyl glycerol tetraether ratio; Isoprenoid monocyclic glycerol dialkyl glycerol tetraether; Isoprenoid monocyclic glycerol dialkyl glycerol tetraether, fractional abundance; Isoprenoid tricyclic glycerol dialkyl glycerol tetraether; Isoprenoid tricyclic glycerol dialkyl glycerol tetraether, fractional abundance; Kemarishe; Kirawira; Latitude of event; Longitude of event; Makoma; Malambo Road; Methylation index of 5-methyl branched glycerol dialkyl glycerol tetraether; MULT; Multiple investigations; Musabi; Naabi Hill; Ndabakal; Nyaruswiga; Optional event label; Precipitation, annual mean; Sample code/label; Serengeti; Serengeti_soil_Banagi; Serengeti_soil_Kemarishe; Serengeti_soil_Kirawira; Serengeti_soil_Makoma; Serengeti_soil_Malambo_Road; Serengeti_soil_Musabi; Serengeti_soil_Naabi_Hill; Serengeti_soil_Ndabaka; Serengeti_soil_Nyaruswiga; Serengeti_soil_Shifting_Sands; Serengeti_soil_Simba_Kopjes; Shifting Sands; Simba Kopjes; Temperature, annual mean
    Type: Dataset
    Format: text/tab-separated-values, 1352 data points
    Location Call Number Limitation Availability
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  • 19
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    Compiled Mg/Ca data from PlioVAR (2023)
    PANGAEA
    Details
    Publication Date: 2023-12-18
    Keywords: 130-806A; 130-806B; 165-999A; 184-1143B; 184-1143C; 202-1241; 202-1241A; 202-1241B; 202-1241C; 22-214; 306-U1313B; 306-U1313C; Age; alkenone SST; benthic and planktonic foraminifers; Caribbean Sea; COMPCORE; Composite Core; d18O of planktic foraminifera; Date/Time of event; Depth, composite; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Event label; Exp306; Extracted from PlioVAR KM5c SST Database; Foraminifera, planktic, Magnesium/Calcium ratio; foraminifera oxygen isotopes; From literature; Glomar Challenger; Indian Ocean//RIDGE; Joides Resolution; Latitude of event; Leg130; Leg165; Leg184; Leg202; Leg22; Literature search; Longitude of event; Mg/Ca-based sea surface temperature; North Atlantic Climate 2; Northern Hemisphere glaciation; North Pacific Ocean; PAGES_PlioVAR; Pleistocene; Pliocene; PlioVAR - Pliocene climate variability over glacial-interglacial timescales; Reference/source; Sample code/label; Sea surface temperature; Site; South China Sea; Species, unique identification; Species, unique identification (Semantic URI); Species, unique identification (URI); Uniform resource locator/link to raw data file; Uniform resource locator/link to reference
    Type: Dataset
    Format: text/tab-separated-values, 26274 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 20
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    Branched and isoprenoid GDGT data of surface soils in tropical South America (2023)
    PANGAEA
    Details
    Publication Date: 2023-12-02
    Keywords: Acyclic glycerol dialkyl glycerol tetraether, fractional abundance; Amazon Rainforest; Atlantic Rainforest; Biome; Branched and isoprenoid tetraether index; Branched GDGTs; Branched glycerol dialkyl glycerol tetraether, IIa', fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIb', fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIc', fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIIa', fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIIb, fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIIb', fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIIc, fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIIc', fractional abundance; Branched Glycerol dialkyl glycerol tetraethers, fractional abundance Ia; Branched Glycerol dialkyl glycerol tetraethers, fractional abundance Ib; Branched Glycerol dialkyl glycerol tetraethers, fractional abundance Ic; Branched Glycerol dialkyl glycerol tetraethers, fractional abundance IIa; Branched Glycerol dialkyl glycerol tetraethers, fractional abundance IIb; Branched Glycerol dialkyl glycerol tetraethers, fractional abundance IIc; Branched Glycerol dialkyl glycerol tetraethers, fractional abundance IIIa; Caatinga; Caatinga_soil; Caatinga, Brazil; Cerrado; Cerrado_Transect; Crenarchaeol, fractional abundance; Crenarchaeol regio-isomer, fractional abundance; Cyclization ratio of branched tetraethers of 5-methyl branched glycerol dialkyl glycerol tetraether; Cyclization ratio of branched tetraethers prime; DEPTH, soil; Depth, soil, maximum; Depth, soil, minimum; Event label; High Performance Liquid Chromatography (HPLC/APCI-MS/MS); Isomer ratio of 6-methyl branched glycerol dialkyl glycerol tetraethers; Isoprenoid dicyclic glycerol dialkyl glycerol tetraether, fractional abundance; isoprenoid GDGTs; Isoprenoid glycerol dialkyl glycerol tetraether, 4, fractional abundance; Isoprenoid glycerol dialkyl glycerol tetraether, humidity index; Isoprenoid glycerol dialkyl glycerol tetraether, isomer index; Isoprenoid glycerol dialkyl glycerol tetraether/branched glycerol dialkyl glycerol tetraether ratio; Isoprenoid monocyclic glycerol dialkyl glycerol tetraether, fractional abundance; Isoprenoid tricyclic glycerol dialkyl glycerol tetraether, fractional abundance; LATITUDE; Llanos; LONGITUDE; Methane index; Methylation index of 5-methyl branched glycerol dialkyl glycerol tetraether; Monocyclic glycerol dialkyl glycerol tetraether, fractional abundance; pH; Precipitation; Sample code/label; Sampling date; Sao_Francisco_River; Sao Francisco River; Soil; Soil profile; SOILS; Soil sample; South America; Temperature; Temperature, annual mean; Type; Xingu; Xingu, Brazil
    Type: Dataset
    Format: text/tab-separated-values, 9436 data points
    Location Call Number Limitation Availability
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