waveloc : earthquake location using continuous data streams alessia maggi - alberto michelini pyrope...
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WaveLoc : Earthquake location using continuous
data streamsAlessia Maggi - Alberto Michelini
Pyrope kick-off meeting - Toulouse Feb 2011
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Désiderata
système de localisation sans pointés de phases sismiques robustesse pendant une crise sismique (e.g L'Aquila) détection et localisation préliminaire rapides utilisable en temps réel (centres de surveillance) utilisable hors-ligne (données d'archive / campagnes temporaires)
INGV
RENASS
LDG
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Méthode des cercles
Richter (1958)
Associateurs (Earthworm, SeiscomP3)
Johnson et al. (1994), Lomax (Erice, 2009)
WaveLoc + LWCEDS
Withers et al. (BSSA, 1999)
Maggi & Michelini (GJI, sub)
Localisation...
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Numerical Recipes
Processing
Maggi & Michelini (GJI, sub)
« Simplifier le signal! »
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WaveLoc en visuel...
Maggi & Michelini (GJI, sub)
(kurtosis)
« Séquence temporelle décortiquée »
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WaveLoc sur données réelles...
Maggi & Michelini (GJI, sub)
Smax
« Smax = maximum de stack »
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Smax
Détection = association = localisation
Maggi & Michelini (GJI, sub)
Maggi et al. (GJI, 2009)
Maxima de Smax = séismes Détecteur basé sur FLEXWIN
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Milazzo (M3.8, 2008/10/24)
Michelini & Maggi (EGU, 2009)
« Nos premiers tests (avant L'Aquila) »
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L'Aquila - répliques
Maggi & Michelini (GJI, sub)
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Maggi & Michelini (GJI, sub)
Hector (M2, 2010)
kurtosis
kurtosis
« Déjà bien, mais on veut faire mieux »
L'Aquila - répliques
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