GLORIA

GEOMAR Library Ocean Research Information Access

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
Document type
Keywords
Publisher
Years
  • 1
    Electronic Resource
    Electronic Resource
    Interdecadal variation in the extent of South Pacific tropical waters during the Younger Dryas event (2004)
    [s.l.] : Macmillian Magazines Ltd.
    Nature 428 (2004), S. 927-929 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] During the Younger Dryas event, about 12,000 years ago, the Northern Hemisphere cooled by between 2 and 10 °C (refs 1, 2) whereas East Antarctica experienced warming. But the spatial signature of the event in the southern mid-latitudes and tropics is less well ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nature02506
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Deglacial sea-level record from Tahiti corals and the timing of global meltwater discharge (1996)
    [s.l.] : Nature Publishing Group
    Nature 382 (1996), S. 241-244 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The Barbados sea-level record8'9'17'18 suggested that the last deglaciation was characterized by two brief periods of accelerated melting superimposed on a smooth and continuous rise of sea level with no reversals. These so-called MWP-1A and MWP-1B events (14,000 and 11,300 calendar years BP, ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/382241a0
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Abrupt changes in early Holocene tropical sea surface temperature derived from coral records (1997)
    [s.l.] : Nature Publishing Group
    Nature 385 (1997), S. 705-707 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Our sea surface temperature (SST) data contrast markedly with the results of CLIMAP4 published nearly two decades ago which advanced the view that tropical ocean SSTs varied little between the current interglacial period and the Last Glacial Maximum (LGM) at 18-20kyr ago. Although ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/385705a0
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    facet.materialart.
    Unknown
    Coral skeleton P/Ca proxy for seawater phosphate: Multi-colony calibration with a contemporaneous seawater phosphate record (2010)
    Elsevier
    In:  Geochimica et Cosmochimica Acta, 74 (4). pp. 1282-1293.
    Details
    Publication Date: 2018-03-06
    Description: A geochemical proxy for surface ocean nutrient concentrations recorded in coral skeleton could provide new insight into the connections between sub-seasonal to centennial scale nutrient dynamics, ocean physics, and primary production in the past. Previous work showed that coralline P/Ca, a novel seawater phosphate proxy, varies synchronously with annual upwelling-driven cycles in surface water phosphate concentration. However, paired contemporaneous seawater phosphate time-series data, needed for rigorous calibration of the new proxy, were lacking. Here we present further development of the P/Ca proxy in Porites lutea and Montastrea sp. corals, showing that skeletal P/Ca in colonies from geographically distinct oceanic nutrient regimes is a linear function of seawater phosphate (PO4 SW) concentration. Further, high-resolution P/Ca records in multiple colonies of Pavona gigantea and Porites lobata corals grown at the same upwelling location in the Gulf of Panamá were strongly correlated to a contemporaneous time-series record of surface water PO4 SW at this site (r2 = 0.7–0.9). This study supports application of the following multi-colony calibration equations to down-core records from comparable upwelling sites, resulting in ±0.2 and ±0.1 μmol/kg uncertainties in PO4 SW reconstructions from P. lobata and P. gigantea, respectively. Inter-colony agreement in P/Ca response to PO4 SW was good (±5–12% about mean calibration slope), suggesting that species-specific calibration slopes can be applied to new coral P/Ca records to reconstruct past changes in surface ocean phosphate. However, offsets in the y-intercepts of calibration regressions among co-located individuals and taxa suggest that biologically-regulated “vital effects” and/or skeletal extension rate may also affect skeletal P incorporation. Quantification of the effect of skeletal extension rate on P/Ca could lead to corrected calibration equations and improved inter-colony P/Ca agreement. Nevertheless, the efficacy of the P/Ca proxy is thus supported by both broad scale correlation to mean surface water phosphate and regional calibration against documented local seawater phosphate variations.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1016/j.gca.2009.11.002
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 5
    facet.materialart.
    Unknown
    Lithium in the aragonite skeletons of massive Porites corals: A new tool to reconstruct tropical sea surface temperatures (2013)
    AGU (American Geophysical Union) | Wiley
    In:  Paleoceanography, 28 (1). pp. 143-152.
    Details
    Publication Date: 2017-05-10
    Description: Previous studies have demonstrated the potential for the Li content of coral aragonite to record information about environmental conditions, but no detailed study of tropical corals exists. Here we present the Li and Mg to Ca ratios at a bimonthly to monthly resolution over 25 years in two modern Porites corals, the genus most often used for paleoclimate reconstructions in the tropical Indo-Pacific. A strong relationship exists between coral Li/Ca and locally measured SST, indicating that coral Li/Ca can be used to reconstruct tropical SST variations. However, Li/Ca ratios of the skeleton deposited during 1979-1980 do not track local SST well and are anomalously high in places. The Mg/Ca ratios of this interval are also anomalously high, and we suggest Li/Ca can be used to reconstruct tropical SST only when Mg/Ca data are used to carefully screen for relatively rare biological effects. Mg/Li or Li/Mg ratios provide little advantage over Li/Ca ratios, except that the slope of the Li/Mg temperature relationship is more similar between the two corals. The Mg/Li temperature relationship for the coral that experienced a large temperature range is similar to that found for cold water corals and aragonitic benthic foraminifera in previous studies. The comparison with data from other biogenic aragonites suggests the relationship between Li/Mg and water temperature can be described by a single exponential relationship. Despite this hint at an overarching control, it is clear that biological processes strongly influence coral Li/Ca, and more calibration work is required before widely applying the proxy
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1029/2012PA002311
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 6
    facet.materialart.
    Unknown
    Pronounced interannual variability in tropical South Pacific temperatures during Heinrich Stadial 1 (2012)
    Nature Publishing Group
    In:  Nature Communications, 3 (965).
    Details
    Publication Date: 2017-02-23
    Description: The early last glacial termination was characterized by intense North Atlantic cooling and weak overturning circulation. This interval between ~18,000 and 14,600 years ago, known as Heinrich Stadial 1, was accompanied by a disruption of global climate and has been suggested as a key factor for the termination. However, the response of interannual climate variability in the tropical Pacific (El Niño-Southern Oscillation) to Heinrich Stadial 1 is poorly understood. Here we use Sr/Ca in a fossil Tahiti coral to reconstruct tropical South Pacific sea surface temperature around 15,000 years ago at monthly resolution. Unlike today, interannual South Pacific sea surface temperature variability at typical El Niño-Southern Oscillation periods was pronounced at Tahiti. Our results indicate that the El Niño-Southern Oscillation was active during Heinrich Stadial 1, consistent with climate model simulations of enhanced El Niño-Southern Oscillation variability at that time. Furthermore, a greater El Niño-Southern Oscillation influence in the South Pacific during Heinrich Stadial 1 is suggested, resulting from a southward expansion or shift of El Niño-Southern Oscillation sea surface temperature anomalies.
    Type: Article , PeerReviewed
    Format: text
    Format: text
    DOI: 10.1038/ncomms1973
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 7
    facet.materialart.
    Unknown
    Vanuatu fossil coral SST reconstruction for 4200 yr BP
    PANGAEA
    In:  Supplement to: Corrège, Thierry; Delcroix, Thierry; Recy, Jacques; Beck, Warren; Cabioch, Guy; Le Cornec, Florence (2000): Evidence for stronger El Niño-Southern Oscillation (ENSO) Events in a Mid-Holocene massive coral. Paleoceanography, 15(4), 465-470, https://doi.org/10.1029/1999PA000409
    Details
    Publication Date: 2023-05-12
    Description: We present a 47-year-long record of sea surface temperature (SST) derived from Sr/Ca and U/Ca analysis of a massive Porites coral which grew at ~4150 calendar years before present (B.P.) in Vanuatu (southwest tropical Pacific Ocean). Mean SST is similar in both the modern instrumental record and paleorecord, and both exhibit El Niño-Southern Oscillation (ENSO) frequency SST oscillations. However, several strong decadal-frequency cooling events and a marked modulation of the seasonal SST cycle, with power at both ENSO and decadal frequencies, are observed in the paleorecord, which are unprecedented in the modern record.
    Keywords: CDRILL; Core drilling; Drill9A_Tasmaloum
    Type: Dataset
    Format: application/zip, 2 datasets
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 8
    facet.materialart.
    Unknown
    (Table S1) Original element/Ca data for the OGA and Tahiti corals (2013)
    PANGAEA
    In:  Supplement to: Hathorne, Ed C; Felis, Thomas; Suzuki, Atsushi; Kawahata, Hodaka; Cabioch, Guy (2013): Lithium in the aragonite skeletons of massive Porites corals: A new tool to reconstruct tropical sea surface temperatures. Paleoceanography, 28, 143-152, https://doi.org/10.1029/2012PA002311
    Details
    Publication Date: 2023-04-12
    Description: [1] Previous studies have demonstrated the potential for the Li content of coral aragonite to record information about environmental conditions, but no detailed study of tropical corals exists. Here we present the Li and Mg to Ca ratios at a bimonthly to monthly resolution over 25 years in two modern Porites corals, the genus most often used for paleoclimate reconstructions in the tropical Indo-Pacific. A strong relationship exists between coral Li/Ca and locally measured SST, indicating that coral Li/Ca can be used to reconstruct tropical SST variations. However, Li/Ca ratios of the skeleton deposited during 1979–1980 do not track local SST well and are anomalously high in places. The Mg/Ca ratios of this interval are also anomalously high, and we suggest Li/Ca can be used to reconstruct tropical SST only when Mg/Ca data are used to carefully screen for relatively rare biological effects. Mg/Li or Li/Mg ratios provide little advantage over Li/Ca ratios, except that the slope of the Li/Mg temperature relationship is more similar between the two corals. The Mg/Li temperature relationship for the coral that experienced a large temperature range is similar to that found for cold water corals and aragonitic benthic foraminifera in previous studies. The comparison with data from other biogenic aragonites suggests the relationship between Li/Mg and water temperature can be described by a single exponential relationship. Despite this hint at an overarching control, it is clear that biological processes strongly influence coral Li/Ca, and more calibration work is required before widely applying the proxy.
    Keywords: Age; AGE; Age, comment; Aluminium/Calcium ratio; Center for Marine Environmental Sciences; Comment; DHC; DISTANCE; Diver-held corer; Event label; Inductively coupled plasma - mass spectrometry (ICP-MS); Lithium/Calcium ratio; Lithium/Magnesium ratio; Magnesium/Calcium ratio; Magnesium/Lithium ratio; Manganese/Calcium ratio; MARUM; OGA-02-1; Sample ID; TAH-95; Tahiti, French Polynesia; Western Subtropical North Pacific Ocean, Chichijima, Ogasawara Islands, Japan
    Type: Dataset
    Format: text/tab-separated-values, 1652 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 9
    facet.materialart.
    Unknown
    Sr/Ca and U/Ca ratios of a fossil coral from Tasmaloum
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: CDRILL; Core drilling; Drill9A_Tasmaloum; ORDINAL NUMBER; Strontium/Calcium ratio; Uranium/Calcium ratio
    Type: Dataset
    Format: text/tab-separated-values, 917 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 10
    facet.materialart.
    Unknown
    SST reconstruction trom a fossil coral from Tasmaloum
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: Calculated; CDRILL; Core drilling; Drill9A_Tasmaloum; ORDINAL NUMBER; Sea surface temperature, annual mean
    Type: Dataset
    Format: text/tab-separated-values, 568 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...