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  • 1
    Electronic Resource
    Electronic Resource
    The Taurewa Eruptive Episode: evidence for climactic eruptions at Ruapehu volcano, New Zealand (1999)
    Springer
    Bulletin of volcanology 61 (1999), S. 223-240 
    Details
    ISSN: 1432-0819
    Keywords: Key words Ruapehu volcano ; Taurewa Formation ; Tephra ; Pyroclastic flow ; Remanent magnetism ; Taurewa eruptive episode ; Volcanic hazard
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract  The ca. 10,500 years B.P. eruptions at Ruapehu volcano deposited 0.2–0.3 km3 of tephra on the flanks of Ruapehu and the surrounding ring plain and generated the only known pyroclastic flows from this volcano in the late Quaternary. Evidence of the eruptions is recorded in the stratigraphy of the volcanic ring plain and cone, where pyroclastic flow deposits and several lithologically similar tephra deposits are identified. These deposits are grouped into the newly defined Taurewa Formation and two members, Okupata Member (tephra-fall deposits) and Pourahu Member (pyroclastic flow deposits). These eruptions identify a brief (〈ca. 2000-year) but explosive period of volcanism at Ruapehu, which we define as the Taurewa Eruptive Episode. This Episode represents the largest event within Ruapehu's ca. 22,500-year eruptive history and also marks its culmination in activity ca. 10,000 years B.P. Following this episode, Ruapehu volcano entered a ca. 8000-year period of relative quiescence. We propose that the episode began with the eruption of small-volume pyroclastic flows triggered by a magma-mingling event. Flows from this event travelled down valleys east and west of Ruapehu onto the upper volcanic ring plain, where their distal remnants are preserved. The genesis of these deposits is inferred from the remanent magnetisation of pumice and lithic clasts. We envisage contemporaneous eruption and emplacement of distal pumice-rich tephras and proximal welded tuff deposits. The potential for generation of pyroclastic flows during plinian eruptions at Ruapehu has not been previously considered in hazard assessments at this volcano. Recognition of these events in the volcanological record is thus an important new factor in future risk assessments and mitigation of volcanic risk at Tongariro Volcanic Centre.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004450050273
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    Paper (German National Licenses)
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  • 2
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    Electron-impact dissociative ionization of the molecular ion HDO+: A global view (2014)
    American Physical Society (APS)
    Details
    Publication Date: 2014-10-11
    Description: Author(s): P. Defrance, J. Jureta, J. Lecointre, E. Giglio, B. Gervais, C. Dal Cappello, M. Ruiz-Lopez, I. Charpentier, and P.-A. Hervieux We present a combined experimental and theoretical study of the fragmentation of HDO2+ molecular ions produced by electron-impact ionization of HDO+ in the collision energy range 20–2500 eV. Experimental absolute partial inclusive cross sections for the production of OD+,OH+, and O+ are reported and... [Phys. Rev. A 90, 042704] Published Fri Oct 10, 2014
    Keywords: Atomic and molecular collisions and interactions
    Print ISSN: 1050-2947
    Electronic ISSN: 1094-1622
    Topics: Physics
    Published by American Physical Society (APS)
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  • 3
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    Differential and total cross sections of mutual neutralization in low-energy collisions of isotopes of H^{+} +H^{−} (2016)
    American Physical Society (APS)
    Details
    Publication Date: 2016-03-04
    Description: Author(s): Sifiso M. Nkambule, Nils Elander, Åsa Larson, Julien Lecointre, and Xavier Urbain Mutual neutralization in the collisions of H + and H − is studied both theoretically and experimentally. The quantum-mechanical ab initio model includes covalent states associated with the H ( 1 ) + H ( n ≤ 3 ) limits and the collision energy ranges from 1 meV to 100 eV. The reaction is theoretically studied fo… [Phys. Rev. A 93, 032701] Published Thu Mar 03, 2016
    Keywords: Atomic and molecular collisions and interactions
    Print ISSN: 1050-2947
    Electronic ISSN: 1094-1622
    Topics: Physics
    Published by American Physical Society (APS)
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  • 4
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    Luis Cernuda (2021)
    Presses Sorbonne Nouvelle
    Details
    Publication Date: 2022-01-31
    Description: En 1931, alors que l'Espagne vit un bouleversement politique sans précédent et proclame la deuxième République, Luis Cernuda (1902-1963) écrit Les plaisirs interdits, recueil qui est sans aucun doute l'un des chefs-d'oeuvre du surréalisme et une revendication de l'amour homosexuel inédite dans la littérature espagnole. Alternant poèmes en prose et en vers, Les plaisirs interdits plonge le lecteur dans un univers habité par un imaginaire déliquescent, où la voix poétique clame un désir qui se ...
    Keywords: homosexualité ; poésie ; surréalisme ; amour
    Language: French
    Format: image/jpeg
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