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  • 1
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    Sediment core-top GDGT data from the Arctic, the North Pacific and the Southern Ocean (2014)
    PANGAEA
    In:  Supplement to: Ho, Sze Ling; Mollenhauer, Gesine; Fietz, Susanne; Martínez‐García, Alfredo; Lamy, Frank; Rueda, Gemma; Schipper, Konstanze; Méheust, Marie; Rosell-Melé, Antoni; Stein, Ruediger; Tiedemann, Ralf (2014): Appraisal of TEX86 and TEX(L)86 thermometries in subpolar and polar regions. Geochimica et Cosmochimica Acta, 131, 213-226, https://doi.org/10.1016/j.gca.2014.01.001
    Details
    Publication Date: 2024-04-16
    Description: TEX86 (TetraEther indeX of tetraethers consisting of 86 carbon atoms) is a sea surface temperature (SST) proxy based on the distribution of archaeal isoprenoid glycerol dialkyl glycerol tetraethers (GDGTs). In this study, we appraise the applicability of TEX86 and TEX86L in subpolar and polar regions using surface sediments. We present TEX86 and TEX86L data from 160 surface sediment samples collected in the Arctic, the Southern Ocean and the North Pacific. Most of the SST estimates derived from both TEX86 and TEX86L are anomalously high in the Arctic, especially in the vicinity of Siberian river mouths and the sea ice margin, plausibly due to additional archaeal contributions linked to terrigenous input. We found unusual GDGT distributions at five sites in the North Pacific. High GDGT-0/crenarchaeol and GDGT-2/crenarchaeol ratios at these sites suggest a substantial contribution of methanogenic and/or methanotrophic archaea to the sedimentary GDGT pool here. Apart from these anomalous findings, TEX86 and TEX86L values in the surface sediments from the Southern Ocean and the North Pacific do usually vary with overlaying SSTs. In these regions, the sedimentary TEX86-SST relationship is similar to the global calibration, and the derived temperature estimates agree well with overlaying annual mean SSTs at the sites. However, there is a systematic offset between the regional TEX86L-SST relationships and the global calibration. At these sites, temperature estimates based on the global TEX86L calibration are closer to summer SSTs than annual mean SSTs. This finding suggests that in these subpolar settings a regional TEX86L calibration may be a more suitable equation for temperature reconstruction than the global calibration.
    Keywords: Acyclic glycerol dialkyl glycerol tetraether, fractional abundance; Agulhas Ridge; Akademik Boris Petrov; ANT-X/5; ANT-XI/2; ANT-XI/4; ANT-XII/4; ANT-XX/2; ANT-XXIII/9; ANT-XXVI/2; Arctic Ocean; Area/locality; ARK-IX/4; ARK-XI/1; ARK-XXI/1b; ARK-XXII/2; AWI_Paleo; Barents Sea; BC; BCR; Bering Sea; Box corer; Box corer (Reineck); BP00; BP00-02; BP00-26; BP00-36/04; BP00-38; BP01; BP01-61; BP97; BP97-19; BP97-32; BP97-35; BP97-39; BP97-47; BP97-49; BP97-50; BP97-52; BP99; BP99-08; BP99-13; BP99-18; BP99-19; BP99-20; BP99-25; BP99-31; BP99-32; BP99-35; BP99-37; Crenarchaeol, fractional abundance; Crenarchaeol regio-isomer, fractional abundance; DEPTH, sediment/rock; Dicyclic glycerol dialkyl glycerol tetraether, fractional abundance; Elevation of event; Event label; GC; Giant box corer; GKG; Gravity corer; HG_III; HG_IX; IK9307-3; IK9316-6; IK9318-5; IK9327-6; IK9330-5; IK9338-5; IK9340-GKG; IK9342-6; IK9350-6; IK9356-2; IK9367-2; IK9373A-6; IK93Z2-8; IK93Z3-2; IK93Z4-4; IK93Z5-3; Indian Ocean; INOPEX; Ivan Kireyev; KAL; Kara Sea; KaraSea97; Kasten corer; KL; Laptev Sea; Latitude of event; Longitude of event; Method/Device of event; MIC; MiniCorer; Monocyclic glycerol dialkyl glycerol tetraether, fractional abundance; MUC; MULT; MultiCorer; Multiple investigations; N1; N4; North Greenland Sea; North Pacific Ocean; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Piston corer (BGR type); Polarstern; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas; Prydz Bay; PS22/833; PS22/835; PS22/838; PS22/841; PS22 06AQANTX_5; PS2334-1; PS2336-1; PS2339-1; PS2342-1; PS2453-2; PS2455-3; PS2458-4; PS2461-2; PS2462-3; PS2470-1; PS2472-3; PS2473-3; PS2474-2; PS2478-3; PS2489-2; PS2579-1; PS2589-2; PS2659-2; PS2663-4; PS2687-5; PS2691-1; PS2697-1; PS27; PS27/031; PS27/033; PS27/038; PS27/041; PS27/043; PS27/053; PS27/056; PS27/058; PS27/059; PS27/065; PS2715-3; PS2728-2; PS2747-8; PS2749-3; PS28; PS28/256; PS30; PS30/115; PS30/128; PS35/009; PS35/031; PS35/138; PS35/152; PS35/166; PS35/210; PS35 06AQANTXII_4; PS36; PS36/012; PS36/040a; PS36/044; PS63/130-2; PS63/139-2; PS63/143-2; PS63 06AQ200211_2; PS68; PS68/206-2; PS68/211-2; PS68/242-2; PS68/250-2; PS68/251-2; PS68/271-2; PS68/314-1; PS68/328-2; PS68/331-2; PS68/338-3; PS68/341-2; PS68/343-2; PS68/352-2; PS68/357-2; PS68/371-2; PS69; PS69/793-1; PS69/853-2; PS69/878-4; PS69/885-1; PS69/891-3; PS69/899-1; PS69/907-3; PS69/912-5; PS70/277-2; PS70/309-8; PS70/319-2; PS70/333-4; PS70/358-3; PS70 SPACE DAMOCLES; PS75/034-1; PS75/051-2; PS75/053-1; PS75/062-1; PS75/063-2; PS75/065-2; PS75/068-1; PS75/069-2; PS75/070-1; PS75/072-3; PS75/074-1; PS75/076-1; PS75/080-2; PS75/082-2; PS75/084-1; PS75/085-2; PS75/086-1; PS75/087-2; PS75/088-3; PS75/089-6; PS75/090-6; PS75/091-6; PS75/092-1; PS75/094-3; PS75/095-6; PS75/097-5; PS75/098-6; PS75/099-1; PS75/100-1; PS75/101-2; PS75/104-2; PS75/105-1; PS75 BIPOMAC; Riiser-Larsen Sea; SO202/1; SO202/1_01-3; SO202/1_02-4; SO202/1_03-4; SO202/1_04-3; SO202/1_05-3; SO202/1_07-2; SO202/1_08-1; SO202/1_09-2; SO202/1_10-2; SO202/1_11-1; SO202/1_13-4; SO202/1_15-4; SO202/1_16-1; SO202/1_18-1; SO202/1_21-2; SO202/1_22-1; SO202/1_23-4; SO202/1_24-2; SO202/1_25-1; SO202/1_26-1; SO202/1_27-1; SO202/1_28-1; SO202/1_29-5; SO202/1_32-5; SO202/1_33-5; SO202/1_34-4; SO202/1_36-6; SO202/1_37-1; SO202/1_38-1; SO202/1_39-2; SO202/1_41-3; SO202/1_42-3; SO202/1_45-2; Sonne; South Atlantic Ocean; Southeast Pacific; South-East Pacific; South Pacific Ocean; SPP1158; Transdrift-I; Tricyclic glycerol dialkyl glycerol tetraether, fractional abundance; Weddell Sea
    Type: Dataset
    Format: text/tab-separated-values, 1127 data points
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    DATA PANGAEA
  • 2
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    Appraisal of TEX86 and TEX86L thermometries in subpolar and polar regions (2014)
    Elsevier
    Details
    Publication Date: 2014-04-01
    Print ISSN: 0016-7037
    Electronic ISSN: 1872-9533
    Topics: Chemistry and Pharmacology , Geosciences
    Published by Elsevier
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    PAPER CURRENT
  • 3
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    Appraisal of TEX86 and TEXL86 thermometries in subpolar and polar regions (2014)
    Elsevier
    Details
    Publication Date: 2024-01-01
    Description: TEX86 (TetraEther indeX of tetraethers consisting of 86 carbon atoms) is a sea surface temperature (SST) proxy based on the distribution of archaeal isoprenoid glycerol dialkyl glycerol tetraethers (GDGTs). In this study, we appraise the applicability of TEX86 and View the MathML sourceTEX86L in subpolar and polar regions using surface sediments. We present TEX86 and View the MathML sourceTEX86L data from 160 surface sediment samples collected in the Arctic, the Southern Ocean and the North Pacific. Most of the SST estimates derived from both TEX86 and View the MathML sourceTEX86L are anomalously high in the Arctic, especially in the vicinity of Siberian river mouths and the sea ice margin, plausibly due to additional archaeal contributions linked to terrigenous input. We found unusual GDGT distributions at five sites in the North Pacific. High GDGT-0/crenarchaeol and GDGT-2/crenarchaeol ratios at these sites suggest a substantial contribution of methanogenic and/or methanotrophic archaea to the sedimentary GDGT pool here. Apart from these anomalous findings, TEX86 and View the MathML sourceTEX86L values in the surface sediments from the Southern Ocean and the North Pacific do usually vary with overlaying SSTs. In these regions, the sedimentary TEX86-SST relationship is similar to the global calibration, and the derived temperature estimates agree well with overlaying annual mean SSTs at the sites. However, there is a systematic offset between the regional View the MathML sourceTEX86L-SST relationships and the global calibration. At these sites, temperature estimates based on the global View the MathML sourceTEX86L calibration are closer to summer SSTs than annual mean SSTs. This finding suggests that in these subpolar settings a regional View the MathML sourceTEX86L calibration may be a more suitable equation for temperature reconstruction than the global calibration.
    Type: Article , PeerReviewed
    Format: text
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    PAPER (OCEANREP)
  • 4
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    Appraisal of TEX86 and TEX86L thermometries in subpolar and polar regions (2014)
    Elsevier
    In:  EPIC3Geochimica et Cosmochimica Acta, Elsevier, 131, pp. 213-226, ISSN: 0016-7037
    Details
    Publication Date: 2014-06-20
    Description: TEX86 (TetraEther indeX of tetraethers consisting of 86 carbon atoms) is a sea surface temperature (SST) proxy based on the distribution of archaeal isoprenoid glycerol dialkyl glycerol tetraethers (GDGTs). In this study, we appraise the applicability of TEX86 and TEX86L in subpolar and polar regions using surface sediments. We present TEX86 and TEX86L data from 160 surface sediment samples collected in the Arctic, the Southern Ocean and the North Pacific. Most of the SST estimates derived from both TEX86 and TEX86L are anomalously high in the Arctic, especially in the vicinity of Siberian river mouths and the sea ice margin, plausibly due to additional archaeal contributions linked to terrigenous input. We found unusual GDGT distributions at five sites in the North Pacific. High GDGT-0/crenarchaeol and GDGT-2/crenarchaeol ratios at these sites suggest a substantial contribution of methanogenic and/or methanotrophic archaea to the sedimentary GDGT pool here. Apart from these anomalous findings, TEX86 and TEX86L values in the surface sediments from the Southern Ocean and the North Pacific do usually vary with overlaying SSTs. In these regions, the sedimentary TEX86-SST relationship is similar to the global calibration, and the derived temperature estimates agree well with overlaying annual mean SSTs at the sites. However, there is a systematic offset between the regional TEX86L-SST relationships and the global calibration. At these sites, temperature estimates based on the global TEX86L calibration are closer to summer SSTs than annual mean SSTs. This finding suggests that in these subpolar settings a regional TEX86L calibration may be a more suitable equation for temperature reconstruction than the global calibration.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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    PAPER (OA)
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