Journal: Quaternary Science Reviews

Abbreviation

Quat. Sci. Rev.

Publisher

Elsevier

Journal Volumes

ISSN

0277-3791

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Publications1 - 10 of 170
  • Toward a radiometric ice clock
    Item type: Review Article
    Aciego, Sarah M.; Bourdon, Bernard; Schwander, Jakob; et al. (2011)
    Quaternary Science Reviews
  • The impact of abrupt deglacial climate variability on productivity and upwelling on the southwestern Iberian margin
    Item type: Journal Article
    Ausín, Blanca; Hodell, David A.; Cutmore, Anna; et al. (2020)
    Quaternary Science Reviews
    This study combines high-resolution records of nannofossil abundances, oxygen and carbon stable isotopes, core scanning X-ray fluorescence (XRF), and ice rafted debris (IRD) to assess the paleoceanographic changes that occurred during the last deglaciation on the SW Iberian Margin. Our results reveal parallel centennial-scale oscillations in coccolithophore productivity, nutricline depth and upwelling phenomena not previously observed, explained by means of arrival of iceberg-melting waters, iceberg-induced turbulent conditions, SST changes and riverine discharges. On millennial time-scales, higher primary productivity (PP), shallower nutricline, and upwelling occurrence/invigoration are observed for the Last Glacial Maximum (LGM) and Bølling-Allerød (B/A). The opposite scenario (i.e., lower productivity, deeper nutricline and upwelling weakening/absence) is linked to cold spells such as Heinrich Stadials 2 and 1 (HS2 and HS1) and the Younger Dryas (YD). Such paleoproductivity variations are attributed to latitudinal migrations of the thermal fronts associated with oceanic gyres in the North Atlantic, in parallel to oscillations in the strength of the Atlantic Meridional Overturning Circulation (AMOC). Moderate-to-high PP during the Holocene is ascribed to the development of the modern seasonal surface hydrography, with a more persistent Iberian Poleward Current (IPC) and seasonal wind-induced upwelling.
  • Noble gases in the sediments of Lake Van – solute transport and palaeoenvironmental reconstruction
    Item type: Journal Article
    Tomonaga, Yama; Brennwald, Matthias S.; Meydan, Aysegül F.; et al. (2014)
    Quaternary Science Reviews
  • Continental weathering fluxes during the last glacial/interglacial cycle
    Item type: Journal Article
    Crocket, Kirsty C.; Vance, Derek; Foster, Gavin L.; et al. (2012)
    Quaternary Science Reviews
  • A New Zealand perspective on centennial-scale Southern Hemisphere westerly wind shifts during the last two millennia
    Item type: Journal Article
    Hinojosa, Jessica L.; Moy, Christopher M.; Stirling, Claudine H.; et al. (2017)
    Quaternary Science Reviews
  • Seismic stratigraphy of Lake Van, eastern Turkey
    Item type: Journal Article
    Cukur, Deniz; Krastel, Sebastian; Schmincke, Hans-Ulrich; et al. (2014)
    Quaternary Science Reviews
  • Heliomagnetic and geomagnetic activity cycles on millennial timescales
    Item type: Journal Article
    Beer, Juerg; McCracken, Ken G.; Adolphi, Florian; et al. (2025)
    Quaternary Science Reviews
    We report 17 new solar activity cycles with periodicities ranging from 1,700 to 18,000 years. Using Bayesian spectral analysis we determined for each cycle period, amplitude and phase for the past 145,000 years. These results were obtained by analyzing 10Be in the 2775 m long EDML ice core from Dronning Maud Land, Antarctica. In addition, we have augmented the 10Be data with synchronous ice accumulation and δ18O data obtained from the same ice core; with paleomagnetic dipole moment data derived mainly from ocean sediments; and with calculated global insolation data. There is a close agreement between the 10Be periodicities in the first and the last 70 kyr intervals. We have developed a new analytical technique we call the “frequency domain differentiation technique” (FDDT) that distinguishes between the periodicities due to (a) variations in the cosmic ray intensity and (b) climate effects related to the accumulation rate. In a first step we have calculated the 10Be flux and then selected all periodicities which are common within 1 % in at least 2 of the investigated parameters (10Be concentration, 10Be flux, accumulation rate, δ18O, and insolation). Using these data we identified a total of 42 statistically significant periodicities. 20 of them are found in the 10Be concentration which we separated into 3 groups of origins: Four due to 10Be production only (group 1: 18012, 6508, 5782, 3833 yr), thirteen being a combination of production and accumulation related (system) effects with the production components being generally larger than the system components (group 2: 15503, 13837, 8441, 7722, 7136, 4695, 4556, 4110, 3961, 3292, 3104, 2025, 1680 y), and three being related to system effects only (group 3: 23971, 21101, 11637 y). In a second step we used independent paleomagnetic information to distinguish between heliomagnetic and geomagnetic periodicities in the 10Be production. We find an overall good agreement between the 10Be flux and the dipole moment in the time domain. In the frequency domain there is evidence for system effects in the geomagnetic data. Due to inconsistencies between the paleomagnetic records we do not draw conclusions regarding a potential geomagnetic origin of the 10Be cycles found in the EDML ice core.
  • Holocene evolution of Hans Tausen Iskappe (Greenland) and implications for the palaeoclimatic evolution of the high Arctic
    Item type: Journal Article
    Zekollari, Harry; Lecavalier, Benoit S.; Huybrechts, Philippe (2017)
    Quaternary Science Reviews
  • Glacial geomorphology and chronology of deglaciation, South Georgia, sub-Antarctic
    Item type: Journal Article
    Bentley, M. J.; Evans, D. J.A.; Fogwill, C. J.; et al. (2007)
    Quaternary Science Reviews
  • Mid-latitude trans-Pacific reconstructions and comparisons of coupled glacial/interglacial climate cycles based on soil stratigraphy of cover-beds
    Item type: Journal Article
    Alloway, Brent V.; Almond, P. C.; Moreno, P.I.; et al. (2018)
    Quaternary Science Reviews
Publications1 - 10 of 170