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  • Publication . Part of book or chapter of book . Conference object . 2017
    Open Access
    Authors: 
    Enrique D. Fernández-Nieto;
    Publisher: Springer International Publishing
    Country: Spain

    There exists in the literature a huge range of geophysical applications that have been modeled trough two-layer or two-phase models. In this work first some averaged two-layer and two-phase models are presented. We focus on applications to submarine avalanches, debris f...

  • Open Access English
    Authors: 
    François Bouchut; Enrique D. Fernández-Nieto; El Hadji Koné; Anne Mangeney; Gladys Narbona-Reina;
    Publisher: HAL CCSD
    Countries: Spain, France
    Project: EC | SLIDEQUAKE (617472), ANR | LANDQUAKES (ANR-11-BS01-0016)

    Dilatancy plays a key role in mixtures of grains and fluid but is poorly investigated in dry granular flows. These flows may however dilate by more than 10% in granular column collapses. We investigate here dilatancy effects in dry flows with a shallow depth-averaged mo...

  • Open Access English
    Authors: 
    Amandine Sergeant; Anne Mangeney; Eléonore Stutzmann; Jean-Paul Montagner; Fabian Walter; Laurent Moretti; Olivier Castelnau;
    Publisher: HAL CCSD
    Country: France
    Project: EC | SLIDEQUAKE (617472)

    The force applied to the Earth by the calving of two icebergs at Jakobshavn Isbrae, Greenland, has been quantified. The source force history was recovered by inversion of regional broadband seismograms without any a priori constraint on the source time function, in cont...

  • Open Access English
    Authors: 
    Pauline Bonnet; Vladislav A. Yastrebov; Patrick Queutey; Alban Leroyer; Anne Mangeney; Olivier Castelnau; Amandine Sergeant; Eléonore Stutzmann; J. P. Montagner;
    Publisher: HAL CCSD
    Country: France
    Project: EC | SLIDEQUAKE (617472)

    At near-grounded glacier termini, calving can lead to the capsize of kilometre-scale (i.e. gigatons) unstable icebergs. The transient contact force applied by the capsizing iceberg on the glacier front generates seismic waves that propagate over teleseismic distances. T...