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  • 2015-2019  (19)
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  • 1
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    Organic temperature proxies in the subpolat region around Iceland (2015)
    PANGAEA
    In:  Supplement to: Rodrigo-Gámiz, Marta; Rampen, Sebastiaan W; de Haas, Henk; Baas, Marianne; Schouten, Stefan; Sinninghe Damsté, Jaap S (2015): Constraints on the applicability of the organic temperature proxies UK'37, TEX86 and LDI in the subpolar region around Iceland. Biogeosciences, 12(22), 6573-6590, https://doi.org/10.5194/bg-12-6573-2015
    Details
    Publication Date: 2023-01-13
    Description: Subpolar regions are key areas to study natural climate variability, due to their high sensitivity to rapid environmental changes, particularly through sea surface temperature (SST) variations. Here, we have tested three independent organic temperature proxies (UK'37, TEX86 and LDI) on their potential applicability for SST reconstruction in the subpolar region around Iceland. UK'37, TEX86 and TEXL86 temperature estimates from suspended particulate matter showed a substantial discrepancy with instrumental data, while long chain alkyl diols were below detection limit in most of the stations. In the northern Iceland Basin, sedimenting particles revealed a seasonality in lipid fluxes i.e. high fluxes of alkenones and GDGTs were measured during late spring-summer, and high fluxes of long chain alkyl diols during late summer. The flux-weighted average temperature estimates had a significant negative (ca. 2.3°C for UK'37) and positive (up to 5°C for TEX86) offset with satellite-derived SSTs and temperature estimates derived from the underlying surface sediment. UK'37 temperature estimates from surface sediments around Iceland correlate well with summer mean sea surface temperatures, while TEX86 derived temperatures correspond with both annual and winter mean 0-200 m temperatures, suggesting a subsurface temperature signal. Anomalous LDI-SST values in surface sediments, and low mass flux of 1,13- and 1,15-diols compared to 1,14-diols, suggest that Proboscia diatoms are the major sources of long chain alkyl diols in this area rather than eustigmatophyte algae, and therefore the LDI cannot be applied in this region.
    Type: Dataset
    Format: application/zip, 4 datasets
    Location Call Number Limitation Availability
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  • 2
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    Long chain alkyl diol distribution in Arabian Sea surface sediments (2016)
    PANGAEA
    In:  Supplement to: Rodrigo-Gámiz, Marta; Rampen, Sebastiaan W; Schouten, Stefan; Sinninghe Damsté, Jaap S (2016): The impact of oxic degradation on long chain alkyl diol distributions in Arabian Sea surface sediments. Organic Geochemistry, 100, 1-9, https://doi.org/10.1016/j.orggeochem.2016.07.003
    Details
    Publication Date: 2023-03-03
    Description: Oxygen exposure has a large impact on lipid biomarker preservation in surface sediments and may affect the application of organic proxies used for reconstructing past environmental conditions. To determine its effect on long chain alkyl diol and keto-ol based proxies, the distributions of these lipids was studied in nine surface sediments from the Murray Ridge in the Arabian Sea obtained from varying water depths (900 to 3000 m) but in close lateral proximity and, therefore, likely receiving a similar particle flux. Due to substantial differences in bottom water oxygen concentration (〈3 to 77 µmol/L) and sedimentation rate, substantial differences exist in the time the biomarker lipids are exposed to oxygen in the sediment. Long chain alkyl diol and keto-ol concentrations in the surface sediments (0-0.5 cm) decreased progressively with increasing oxygen exposure time, suggesting increased oxic degradation. The 1,15-keto-ol/diol ratio (DOXI) increased slightly with oxygen exposure time as diols had apparently slightly higher degradation rates than keto-ols. The ratio of 1,14- vs. 1,13- or 1,15-diols, used as upwelling proxies, did not show substantial changes. However, the C30 1,15-diol exhibited a slightly higher degradation rate than C28 and C30 1,13-diols, and thus the Long chain Diol Index (LDI), used as sea surface temperature proxy, showed a negative correlation with the maximum residence time in the oxic zone of the sediment, resulting in ca. 2-3.5 °C change, when translated to temperature. The UK'37 index did not show significant changes with increasing oxygen exposure. This suggests that oxic degradation may affect temperature reconstructions using the LDI in oxic settings and where oxygen concentrations have varied substantially over time.
    Keywords: 64PE301; Alkenone, C37:2; Alkenone, C37:3; Alkenone, unsaturation index UK'37; BC; Box corer; C30 1,15-keto-ol; C32 1,15-keto-ol; C34 1,15-keto-ol; Calculated after Rampen et al. (2012); Calculated from UK'37 (Müller et al, 1998); Carbon, organic, per unit sediment mass; Carbon, organic, total; DEPTH, sediment/rock; Diol oxidation index; Diol upwelling index; Elevation of event; Event label; Latitude of event; Long chain diol, C28:1 1,14-diol; Long chain diol, C28 1,13-diol; Long chain diol, C28 1,14-diol; Long chain diol, C30:1 1,14-diol; Long chain diol, C30 1,13-diol; Long chain diol, C30 1,14-diol; Long chain diol, C30 1,15-diol; Long chain diol, C32 1,15-diol; Long chain diol index; Longitude of event; Northern Arabian Sea; Oxygen penetration depth; PA1000; PA1200; PA1300; PA1500; PA1800; PA2000; PA2500; PA3000; PA900; PASOM; Pelagia; Residence time; Sea surface temperature, annual mean
    Type: Dataset
    Format: text/tab-separated-values, 358 data points
    Location Call Number Limitation Availability
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  • 3
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    (Table 2) Lipid fluxes derived from sediment trap samples (2015)
    PANGAEA
    Details
    Publication Date: 2023-03-03
    Keywords: 64PE341; Acyclic glycerol dialkyl glycerol tetraether, flux; Alkenone, C37:2+C37:3, flux; C28+C30 1,14-diols, flux; Crenarchaeol, flux; DATE/TIME; DEPTH, water; Flux of total mass; LCD01-1; Long chain diol index, flux; Long-Chain Diols 2011; Pelagia; Sample code/label; South off Iceland; Tetraether index of 86 carbon atoms of glycerol dialkyl glycerol tetraethers, flux; Trap, sediment; TRAPS; Unsaturated C28:1+C30:1 1,14-diol, flux
    Type: Dataset
    Format: text/tab-separated-values, 188 data points
    Location Call Number Limitation Availability
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  • 4
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    (Table S1) Sea surface temperature reconstruction from SPM samples (2015)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: 64PE341; 64PE357; Alkenone, unsaturation index UK'37; Calculated from LDI (Rampen et al., 2012); Calculated from TEX86 (Kim et al., 2010); Calculated from UK'37 (Müller et al, 1998); Date/Time of event; DEPTH, water; DIOLS-Trap Recovery; Event label; extracted from the World Ocean Atlas 2009 (WOA09); Latitude of event; LCD_A; LCD_B; LCD_C; LCD_D; LCD_E; LCD_F; LCD_G; LCD01-2; LCD07-2; LCD08-2; LCD10-2; LCD13-2; LCD16-2; Long chain diol index; Long-Chain Diols 2011; Longitude of event; Measured in situ; PCTD-RO; Pelagia; PUMP; PumpCTD/Rosette; Satellite derived; Sea surface temperature; Sea surface temperature, July; Sea surface temperature, summer; South off Iceland; Tetraether index of 86 carbon atoms; Tetraether index of 86 carbon atoms, low-temperature region; Water pump
    Type: Dataset
    Format: text/tab-separated-values, 118 data points
    Location Call Number Limitation Availability
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  • 5
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    Long chain diols and keto-ols in sediment core Bass River Site (2019)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: AGE; Bass_River_Site; BR; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Leg174AX; Long chain diol, C26 1,12-diol, fractional abundance; Long chain diol, C26 1,13-diol, fractional abundance; Long chain diol, C26 1,14-diol, fractional abundance; Long chain diol, C28 1,12-diol, fractional abundance; Long chain diol, C28 1,13-diol, fractional abundance; Long chain diol, C28 1,14-diol, fractional abundance; Long chain diol, C30 1,12-diol, fractional abundance; Long chain diol, C30 1,13-diol, fractional abundance; Long chain diol, C30 1,14-diol, fractional abundance; Long chain diol, C30 1,15-diol, fractional abundance; Long chain diol, C30 1,16-diol, fractional abundance; Long chain diol, C30 1,17-diol, fractional abundance; Long chain diol, C32 1,13-diol, fractional abundance; Long chain diol, C32 1,15-diol, fractional abundance; Long chain diol, C32 1,16-diol, fractional abundance; Long chain diol, C34 1,15-diol, fractional abundance; Long chain diol, C34 1,17-diol, fractional abundance; Long chain keto-ols, C26 1,13, fractional abundance; Long chain keto-ols, C28 1,12, fractional abundance; Long chain keto-ols, C30 1,15, fractional abundance; Long chain keto-ols, C32 1,15, fractional abundance; Long chain keto-ols, C34 1,15, fractional abundance; Long chain keto-ols, C34 1,17, fractional abundance; Long chain keto-ols, C36 1,19, fractional abundance; NIOZ_UU; NIOZ Royal Netherlands Institute for Sea Research, and Utrecht University; North American East Coast; Ocean Drilling Program; ODP; see reference(s)
    Type: Dataset
    Format: text/tab-separated-values, 300 data points
    Location Call Number Limitation Availability
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  • 6
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    Long chain diol index in sediment core Bass River Site (2019)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: AGE; Bass_River_Site; BR; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Leg174AX; Long chain diol, C32 1,15-diol, fractional abundance; Long chain diol index; NIOZ_UU; NIOZ Royal Netherlands Institute for Sea Research, and Utrecht University; North American East Coast; Ocean Drilling Program; ODP
    Type: Dataset
    Format: text/tab-separated-values, 77 data points
    Location Call Number Limitation Availability
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  • 7
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    (Table S2) Sea surface temperature reconstruction from sediment trap samples (2015)
    PANGAEA
    Details
    Publication Date: 2023-12-18
    Keywords: 64PE341; Alkenone, unsaturation index UK'37; Calculated from LDI (Rampen et al., 2012); Calculated from TEX86 (Kim et al., 2010); Calculated from TEX86H (Kim et al., 2012); Calculated from UK'37 (Müller et al, 1998); DATE/TIME; DEPTH, water; extracted from the World Ocean Atlas 2009 (WOA09); LCD01-1; Long chain diol index; Long-Chain Diols 2011; Pelagia; Sample code/label; Satellite derived; Sea surface temperature; South off Iceland; Tetraether index of 86 carbon atoms; Tetraether index of 86 carbon atoms, low-temperature region; Trap, sediment; TRAPS
    Type: Dataset
    Format: text/tab-separated-values, 222 data points
    Location Call Number Limitation Availability
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  • 8
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    (Table S3) Sea surface temperature reconstruction from surface sediments (2015)
    PANGAEA
    Details
    Publication Date: 2023-12-18
    Keywords: 64PE341; Alkenone, unsaturation index UK'37; Calculated from LDI (Rampen et al., 2012); Calculated from TEX86 (Kim et al., 2010); Calculated from TEX86H (Kim et al., 2012); Calculated from UK'37 (Müller et al, 1998); DEPTH, sediment/rock; Elevation of event; Event label; extracted from the World Ocean Atlas 2009 (WOA09); Latitude of event; LCD01-3; LCD03-3; LCD05-3; LCD06-3; LCD07-3; LCD08-3; LCD10-3; LCD11-3; LCD13-3; LCD14-3; Long chain diol index; Long-Chain Diols 2011; Longitude of event; MUC; MultiCorer; Pelagia; Sample code/label; Sea surface temperature; Sea surface temperature, annual mean; Sea surface temperature, summer; Sea surface temperature, winter; South off Iceland; Tetraether index of 86 carbon atoms; Tetraether index of 86 carbon atoms, low-temperature region
    Type: Dataset
    Format: text/tab-separated-values, 150 data points
    Location Call Number Limitation Availability
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  • 9
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    Alkenones in sediment core Bass River Site (2019)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: AGE; Alkenone, C37:2Me, fractional abundance; Alkenone, C38:2Et, fractional abundance; Alkenone, C38:2Me, fractional abundance; Alkenone, C39:2Et, fractional abundance; Alkenone, C39:2Me, fractional abundance; Alkenone, C40:2ET, fractional abundance; Alkenone, C41:2Me, fractional abundance; Alkenone, C42:2ET, fractional abundance; Bass_River_Site; BR; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Leg174AX; NIOZ_UU; NIOZ Royal Netherlands Institute for Sea Research, and Utrecht University; North American East Coast; Ocean Drilling Program; ODP; see reference(s)
    Type: Dataset
    Format: text/tab-separated-values, 102 data points
    Location Call Number Limitation Availability
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  • 10
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    Glycerol ether lipids in sediment core Bass River Site (2019)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: AGE; Bass_River_Site; BR; Branched glycerol dialkanol diethers, Ia, fractional abundance; Branched glycerol dialkyl glycerol tetraether, Ia, fractional abundance; Branched glycerol dialkyl glycerol tetraether, Ib, fractional abundance; Branched glycerol dialkyl glycerol tetraether, Ic, fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIa, fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIIa, fractional abundance; Branched glycerol monoalkyl glycerol tetraethers, Ia, fractional abundance; Branched glycerol monoalkyl glycerol tetraethers, IIa, fractional abundance; Branched glycerol monoalkyl glycerol tetraethers, IIIa, fractional abundance; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Hydroxylated acyclic glycerol dialkyl glycerol tetraether, fractional abundance; Hydroxylated dicyclic glycerol dialkyl glycerol tetraether, fractional abundance; Hydroxylated monocyclic glycerol dialkyl glycerol tetraether, fractional abundance; Isoprenoid acyclic glycerol dialkyl glycerol tetraether, fractional abundance; Isoprenoidal butanetriol monoalkyl glycerol tetraether, 0, fractional abundance; Isoprenoidal butanetriol monoalkyl glycerol tetraether, 1, fractional abundance; Isoprenoidal glycerol dialkanol diethers, 0, fractional abundance; Isoprenoidal glycerol dialkanol diethers, Crenarchaeol, fractional abundance; Isoprenoidal glycerol monoalkanediol diethers, fractional abundance; Isoprenoidal glycerol monoalkyl glycerol tetraethers, fractional abundance; Isoprenoidal pentanetriol dibiphytanyl glyceroltetraethers, fractional abundance; Isoprenoidal pentanetriol monoalkyl glycerol tetraethers, fractional abundance; Isoprenoid butanetriol dibiphytanyl glycerol tetraethers, 0, fractional abundance; Isoprenoid butanetriol dibiphytanyl glycerol tetraethers, 1, fractional abundance; Isoprenoid butanetriol dibiphytanyl glycerol tetraethers, 2, fractional abundance; Isoprenoid dicyclic glycerol dialkyl glycerol tetraether, fractional abundance; Isoprenoid glycerol dialkyl glycerol tetraether, 4, fractional abundance; Isoprenoid glycerol dialkyl glycerol tetraether, 5, fractional abundance; Isoprenoid glycerol dialkyl glycerol tetraether, crenarchaeol, fractional abundance; Isoprenoid glycerol dialkyl glycerol tetraether, crenarchaeol isomer, fractional abundance; Isoprenoid monocyclic glycerol dialkyl glycerol tetraether, fractional abundance; Isoprenoid tricyclic glycerol dialkyl glycerol tetraether, fractional abundance; Leg174AX; NIOZ_UU; NIOZ Royal Netherlands Institute for Sea Research, and Utrecht University; North American East Coast; Ocean Drilling Program; ODP; see reference(s)
    Type: Dataset
    Format: text/tab-separated-values, 607 data points
    Location Call Number Limitation Availability
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