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  • AAAS (American Association for the Advancement of Science)  (1)
  • Bremen : Fachbereich Geowiss., Univ.  (1)
  • Pergamon-Elsevier  (1)
  • 1
    Online Resource
    Online Resource
    Report and preliminary results of RV SONNE cruise SO 221 invers : Hong Kong - Hong Kong, 17.05.2012 -07.06.2012 (2012)
    Bremen : Fachbereich Geowiss., Univ.
    Details Availability
    Keywords: Forschungsbericht ; Sonne ; Expedition
    Type of Medium: Online Resource
    Pages: Online-Ressource (64 S., 9,57 MB)
    Series Statement: Berichte aus dem Fachbereich Geowissenschaften der Universität Bremen 288
    URL: http://nbn-resolving.de/urn:nbn:de:gbv:46-00102735-15
    URL: https://edocs.tib.eu/files/e01fb14/756451183.pdf
    URL: https://doi.org/10.2314/GBV:756451183
    DOI: 10.2314/GBV:756451183
    Language: English
    Note: Förderkennzeichen BMBF 03GO221A , Systemvoraussetzungen: Acrobat reader.
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  • 2
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    Caribbean salinity anomalies contributed to variable North Atlantic circulation and climate during the Common Era (2023)
    AAAS (American Association for the Advancement of Science)
    Details
    Publication Date: 2024-03-22
    Description: Paleoceanographic reconstructions show that the strength of North Atlantic currents decreased during the Little Ice Age. In contrast, the role of ocean circulation in climate regulation during earlier historical epochs of the Common Era (C.E.) remains unclear. Here, we reconstruct sea surface temperature (SST) and salinity in the Caribbean Basin for the past 1700 years using the isotopic and elemental composition of planktic foraminifera tests. Centennial-scale SST and salinity variations in the Caribbean co-occur with (hydro)climate changes in the Northern Hemisphere and are linked to a North Atlantic SST forcing. Cold phases around 600, 800, and 1400 to 1600 C.E. are characterized by Caribbean salinification and Gulf of Mexico freshening that implies reductions in the strength of North Atlantic surface circulation. We suggest that the associated changes in the meridional salt advection contributed to the historical climate variability of the C.E.
    Type: Article , PeerReviewed , info:eu-repo/semantics/article
    Format: text
    Format: text
    Format: archive
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 3
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    Organic-geochemical proxies of sea surface temperature in surface sediments of the tropical eastern Indian Ocean (2014)
    Pergamon-Elsevier
    In:  EPIC3Deep Sea Research Part I: Oceanographic Research Papers, Pergamon-Elsevier, 88, pp. 17-29, ISSN: 0967-0637
    Details
    Publication Date: 2014-06-25
    Description: In this study we reconstruct sea surface temperatures (SSTs) using two lipid-based biomarker proxies (alkenone unsaturation index View the MathML sourceU37K′ and TEX86 index based on glycerol dibiphytanyl glycerol tetraethers) in 36 surface sediment samples from the Indonesian continental margin off west Sumatra and south of Java and the Lesser Sunda Islands. Comparison of measured temperatures (World Ocean Atlas 09) to reconstructed temperatures suggests that SST estimates based on View the MathML sourceU37K′ reflect the SE monsoon SST in the upwelling area south of Java and the Lesser Sunda Islands. Estimates based on TEX86 using the calibration for temperatures 〉20 °C (View the MathML sourceTEX86H) are up to 2 °C lower than View the MathML sourceU37K′-based SSTs. This offset is possibly related to either one or a combination of two factors: (i) the depth habitats of the source organisms and (ii) different seasonal production and/or seasonality of export associated with phytoplankton blooming triggered by primary productivity. In the non-upwelling area off west Sumatra, the alkenone-based SSTs are cooler than measured temperatures during the entire year, likely reflecting the limitations of the View the MathML sourceU37K′ proxy beyond 28 °C, while reconstructed temperatures based on View the MathML sourceTEX86H are consistent with mean annual SST.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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