Opportune detections of global P-wave propagation from microseisms interferometry
نویسندگان
چکیده
Global seismological observations are sensitive to oceanic forcings, namely microseisms. In addition dominant surface waves, these sources generate body waves that travel through the deep structures of our planet. Despite sources’ inherent complexity, interferometric methods allow isolating coherent for imaging applications. For a given station pair, only specific microseism events contribute illumination target. We propose an opportune workflow based on ocean sea state models extract robust interferences. This approach is illustrated with strong source in North Atlantic Ocean, occurring around December 9, 2014. Supplementary Materials: material this article supplied as separate file: crgeos-222-suppl.pdf Les sismologiques globales sont sensibles aux forçages océaniques, à savoir les microséismes. En plus des ondes de dominantes, ces produisent volume qui se propagent dans profondes notre planète. Malgré la complexité inhérente sources, méthodes interférométriques permettent d’isoler cohérentes pour applications d’imagerie. Pour une paire stations donnée, seuls événements microsismiques spécifiques contribuent l’illumination d’une cible définie. Nous proposons approche basée sur modèles d’état mer extraire interférences robustes. Cette démarche est illustrée l’aide majeure l’océan Atlantique Nord, survenue autour du 9 décembre Compléments : Des compléments fournis cet le fichier séparé
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ژورنال
عنوان ژورنال: Comptes Rendus Geoscience
سال: 2023
ISSN: ['1778-7025', '1631-0713']
DOI: https://doi.org/10.5802/crgeos.222