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  • 1
    Electronic Resource
    Electronic Resource
    Climate change Lessons from a distant monsoon (2007)
    [s.l.] : Nature Publishing Group
    Nature 445 (2007), S. 270-271 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] As Earth's climate continues to warm, understanding the dimensions of our vulnerability to present and future changes is crucial if we are to plan and adapt. Studies of palaeoclimate have an important role here in helping us to uncover the full range of past climate variability, and so avoid future ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/445270a
    Location Call Number Limitation Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Influence of mean climate change on climate variability from a 155-year tropical Pacific coral record (2000)
    [s.l.] : Macmillian Magazines Ltd.
    Nature 407 (2000), S. 989-993 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Today, the El Niño/Southern Oscillation (ENSO) system is the primary driver of interannual variability in global climate, but its long-term behaviour is poorly understood. Instrumental observations reveal a shift in 1976 towards warmer and wetter conditions in the tropical Pacific, ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/35039597
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    Paper (German National Licenses)
    Fulltext
  • 3
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    Isotope analysis, age calculation and calcite concentration from IODP Hole 310-M0005D (2012)
    PANGAEA
    In:  Supplement to: Thomas, Alexander L; Fujita, Kazuhiko; Iryu, Yasufumi; Bard, Edouard; Cabioch, Guy; Camoin, Gilbert; Cole, Julia E; Deschamps, Pierre; Durand, Nicolas; Hamelin, Bruno; Heindel, Katrin; Henderson, Gideon M; Mason, Andrew J; Matsuda, Hiroki; Menabreaz, Lucie; Omori, Akitoshi; Quinn, Terry; Sakai, Saburo; Sato, Tokiyuki; Sugihara, Kaoru; Takahashi, Yasunari; Thouveny, Nicolas; Tudhope, Alexander W; Webster, Jody M; Westphal, Hildegard; Yokoyama, Yusuke (2012): Assessing subsidence rates and paleo water-depths for Tahiti reefs using U-Th chronology of altered corals. Marine Geology, 295-298, 86-94, https://doi.org/10.1016/j.margeo.2011.12.006
    Details
    Publication Date: 2024-01-25
    Description: We present uranium-thoriumchronology for a 102 mcore through a Pleistocene reef at Tahiti (French Polynesia) sampled during IODP Expedition 310 "Tahiti Sea Level". We employ total and partial dissolution procedures on the older coral samples to investigate the diagenetic overprint of the uranium-thoriumsystem. Although alteration of the U-Th system cannot be robustly corrected, diagenetic trends in the U-Th data, combined with sea level and subsidence constraints for the growth of the corals enables the age of critical samples to be constrained to marine isotope stage 9. We use the ages of the corals, together with d18O based sea-level histories, to provide maximum constraints on possible paleo water-depths. These depth constraints are then compared to independent depth estimates based on algal and foraminiferal assemblages, microbioerosion patterns, and sedimentary facies, confirming the accuracy of these paleo water-depth estimates. We also use the fact that corals could not have grown above sea level to place amaximumconstraint on the subsidence rate of Tahiti to be 0.39 m ka**-1,with the most likely rate being close to the existing minimum estimate of 0.25m ka**-1.
    Keywords: 310-M0005D; DP Hunter; DRILL; Drilling/drill rig; Exp310; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; TAH-03A-4C; Tahiti, offshore Maraa; Tahiti Sea Level
    Type: Dataset
    Format: application/zip, 2 datasets
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    DATA PANGAEA
  • 4
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    (Table 2) Age calculation and calcite concentration from IODP Hole 310-M0005D (2012)
    PANGAEA
    Details
    Publication Date: 2024-01-25
    Keywords: 310-M0005D; Age, standard deviation; Age model; Calcite; Calcite, standard deviation; Calculated; DEPTH, sediment/rock; DP Hunter; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Exp310; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Residual; Sample, optional label/labor no; Sample code/label; TAH-03A-4C; Tahiti, offshore Maraa; Tahiti Sea Level; Uranium-234/Uranium-238 activity ratio; Uranium-234/Uranium-238 activity ratio, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 176 data points
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    DATA PANGAEA
  • 5
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    (Table 1) Uranium and thorium concentrations as well as isotope ratios from IODP Hole 310-M0005D (2012)
    PANGAEA
    Details
    Publication Date: 2024-01-25
    Keywords: 310-M0005D; DP Hunter; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Exp310; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Multi-collector inductively coupled plasma mass spectrometer (MC-ICP-MS); Reference/source; Sample, optional label/labor no; Sample code/label; TAH-03A-4C; Tahiti, offshore Maraa; Tahiti Sea Level; Thorium-230/Uranium-238 activity ratio; Thorium-230/Uranium-238 activity ratio, standard deviation; Thorium-232; Thorium-232, standard deviation; Thorium-232/Uranium-238 activity ratio; Thorium-232/Uranium-238 activity ratio, standard deviation; Uranium-234/Uranium-238 activity ratio; Uranium-234/Uranium-238 activity ratio, standard deviation; Uranium-238; Uranium-238, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 244 data points
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    DATA PANGAEA
  • 6
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    The Southern Oscillation recorded in the δ18O of corals from Tarawa Atoll (1990)
    AGU (American Geophysical Union)
    In:  Paleoceanography, 5 (5). pp. 669-683.
    Details
    Publication Date: 2017-05-09
    Description: In the western equatorial Pacific, the El Niño/Southern Oscillation (ENSO) phenomenon is characterized by precipitation variability associated with the migration of the Indonesian low pressure cell to the region of the date line and the equator. During ENSO events, Tarawa Atoll (1°N, 172°E) experiences heavy rainfall which has an estimated δ18O of about −8 to −10‰ δ18OSMOW. At Tarawa, sufficient precipitation of this composition falls during ENSO events to alter the δ18O and the salinity of the surface waters. Oxygen isotope records from two corals collected off the reef crest of Tarawa reflect rainfall variations associated with both weak and strong ENSO conditions, with approximately monthly resolution. Coral skeletal δ18O variations due to small sea surface temperature (SST) changes are secondary. These records demonstrate the remarkable ability of this technique to reconstruct variations in the position of the Indonesian Low from coral δ18O records in the western equatorial Pacific, a region which has few paleoclimatic records. The coral isotopic data correctly resolve the relative magnitudes of recent variations in the Southern Oscillation Index. Combining the Tarawa record with an oxygen isotopic history from a Galápagos Islands coral demonstrates the ability to distinguish the meteorologic (precipitation) and oceanographic (SST) anomalies that characterize ENSO events across the Pacific Basin over the period of common record (1960–1979). Comparison of the intensity of climatic anomalies at these two sites yields insight into the spatial variability of ENSO events. Isotope records from older corals can provide high-resolution, Pacific-wide reconstructions of ENSO behavior during periods of different climate boundary conditions.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1029/PA005i005p00669
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    OceanRep: Article in a Scientific Journal - peer-reviewed
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