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  • Other Sources  (106)
  • Springer  (106)
  • American Association for the Advancement of Science
  • American Geophysical Union
  • Copernicus
  • Springer Nature
  • 2010-2014  (106)
  • 2005-2009
  • 1980-1984
  • 1925-1929
  • 2014  (106)
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Source
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  • 2010-2014  (106)
  • 2005-2009
  • 1980-1984
  • 1925-1929
Year
  • 101
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    Chaos, Cryptography and Communications (2014)
    Springer
    In:  The European Physical Journal - Special Topics ; 223(8)
    Details
    Publication Date: 2022-03-21
    Type: info:eu-repo/semantics/other
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  • 102
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    The Potential of Current- and Wind-Driven Transport for Environmental Management of the Baltic Sea (2014)
    Springer
    Details
    Publication Date: 2022-09-19
    Description: The ever increasing impact of the marine industry and transport on vulnerable sea areas puts the marine environment under exceptional pressure and calls for inspired methods for mitigating the impact of the related risks. We describe a method for preventive reduction of remote environmental risks caused by the shipping and maritime industry that are transported by surface currents and wind impact to the coasts. This method is based on characterizing systematically the damaging potential of the offshore areas in terms of potential transport to vulnerable regions of an oil spill or other pollution that has occurred in a particular area. The resulting maps of probabilities of pollution to be transported to the nearshore and the time it takes for the pollution to reach the nearshore are used to design environmentally optimized fairways for the Gulf of Finland, Baltic Proper, and south-western Baltic Sea
    Type: Article , PeerReviewed , info:eu-repo/semantics/article
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  • 103
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    The strategic value of geoengineering research (2014)
    Springer
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    Publication Date: 2023-08-15
    Description: Deployment of geoengineering technology should engender serious caution, but geoengineering research would engender a strategic effect on the climate change problem in general. First, the thought that scientists should research geongineering because the world might need it could help society develop an appreciation of the seriousness of the climate change problem. Second, conceptualizing geoengineering through research promotes conceptualizing a sorely needed technical strategy for climate change. Finally, geoengineering research will have a strategic benefit for climate science because the scientific issues that arise for geoengineering bring into focus the very issues that plague climate science in general.
    Type: Book chapter , PeerReviewed
    Format: text
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  • 104
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    Oxygen variance and meridional oxygen supply in the Tropical North East Atlantic oxygen minimum zone (2014)
    Springer
    Details
    Publication Date: 2023-11-08
    Description: The distribution of the mean oceanic oxygen concentration results from a balance between ventilation and consumption. In the eastern tropical Pacific and Atlantic, this balance creates extended oxygen minimum zones (OMZ) at intermediate depth. Here, we analyze hydrographic and velocity data from shipboard and moored observations, which were taken along the 23°W meridian cutting through the Tropical North East Atlantic (TNEA) OMZ, to study the distribution and generation of oxygen variability. By applying the extended Osborn–Cox model, the respective role of mesoscale stirring and diapycnal mixing in producing enhanced oxygen variability, found at the southern and upper boundary of the OMZ, is quantified. From the well-ventilated equatorial region toward the OMZ core a northward eddy-driven oxygen flux is observed whose divergence corresponds to an oxygen supply of about 2.4 μmol kg−1 year−1 at the OMZ core depth. Above the OMZ core, mesoscale eddies act to redistribute low- and high-oxygen waters associated with westward and eastward currents, respectively. Here, absolute values of the local oxygen supply 〉10 μmol kg−1 year−1 are found, likely balanced by mean zonal advection. Combining our results with recent studies, a refined oxygen budget for the TNEA OMZ is derived. Eddy-driven meridional oxygen supply contributes more than 50 % of the supply required to balance the estimated oxygen consumption. The oxygen tendency in the OMZ, as given by the multidecadal oxygen decline, is maximum slightly above the OMZ core and represents a substantial imbalance of the oxygen budget reaching about 20 % of the magnitude of the eddy-driven oxygen supply.
    Type: Article , PeerReviewed
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  • 105
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    Post-glacial time series of explosive eruptions and associated changes in the magma plumbing system of Lonquimay Volcano, South Central Chile (2014)
    Springer
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    Publication Date: 2023-11-08
    Description: The Lonquimay volcanic complex (LVC) in the high Southern Andes comprises a stratocone and NE-trending flank-cone alignments. Numerous effusive and explosive volcanic eruptions characterize its post-glacial magmatic activity. Our tephrostratigraphic record, pre-dating the four historically documented eruptions, comprises 22 dated pyroclastic deposits that are used to constrain repose time distribution and eruption probability of the LVC magmatic system. Statistical examination of the stratigraphy-based eruption time series yields probabilities of 20–50 % for at least one explosive (VEI ≥ 3) eruption within the next 100 years as of 2011. The tephra deposits are subdivided into three petrographic groups: a felsic group (Lonquimay colored-pumice tephra, LCPT), an intermediate population (Lonquimay gray pumice tephra, LGPT), and a mafic member (Lonquimay dark scoria tephra, LDST). The distribution of these petrographic groups through the LVC tephrostratigraphy is linked to the observed changes in repose times. LDST-deposits as well as deposits compositionally zoned from LCPT to LGPT dominate the lower part of the stratigraphy for which recurrence times are short (RTmean = 417 ± 169a). Deposits younger than 6,000 b2k (years before 2000 AD) have dominantly LCPT and minor LDST compositions, no longer contain LGPT, and repose times are significantly longer (RTmean = 1,350 ± 310a). We interpret the change in eruption regime to result from a rearrangement in the magma storage and plumbing system. Thermobarometric calculations based on cpx–liquid equilibria and amphibole compositions reveal three distinct magma storage levels: the mafic LDST derive from mid crustal storage (P mean = 476 ± 95 MPa, T mean = 1,073 ± 24 °C), felsic LCPT mainly erupted from upper-crustal level (P mean = 86 ± 49 MPa, T mean = 936 ± 24 °C), whereas LGPT samples yield intermediate storage depths (P mean = 239 ± 100 MPa, T mean = 1,013 ± 17 °C). Magma contributions from this intermediate reservoir are restricted to 〉6,000 b2k when the Lonquimay plumbing system was in a regime of short repose times; disappearance of the intermediate reservoir coincides with the change to longer repose times between eruptions.
    Type: Article , PeerReviewed
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  • 106
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    Clay minerals as indicators of late Quaternary sedimentation constraints in the Mendeleev Rise, Amerasian Basin, Arctic Ocean (2014)
    Springer
    Details
    Publication Date: 2024-01-01
    Description: The results of study of six cores taken from different morphostructural zones in the Mendeleev Ridge area are discussed. Average contents of minerals of the illite group, chlorite, kaolinite, and smectite are about 60, 21, 12, and 5%, respectively. It was found that fluctuations of minerals along the section correlate with variations in sedimentation constraints in the Late Quaternary. Peaks of kaolinite usually coincide with increased contents of the sand fraction, probably, due to its delivery by icebergs. In contrast, illite shows good correlation with the pelite fraction, testifying to its transport mainly by ices and currents. Minerals of the chlorite and smectite groups in the studied cores are less informative.
    Type: Article , PeerReviewed
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