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Akademický článek

The Sensitivity of Joint Inversions of Seismic and Geodynamic Data to Mantle Viscosity

Autor: Chang Lu, Alessandro M. Forte, Nathan A. Simmons, Stephen P. Grand, Marie N. Kajan, Hongyu Lai, Edward J. Garnero

Publikováno v: Geochemistry, Geophysics, Geosystems, Vol 21, Iss 4, Pp n/a-n/a (2020)

Abstract Seismic tomography has revealed the existence of large‐scale velocity heterogeneities in the mantle. The interpretation of seismic velocity anomalies in terms of temperature and chemical composition is nonunique. We use geodynamic observat

Externí odkaz: https://doaj.org/article/85cdeaaa9dbe41d4b63b520270a121d9

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Akademický článek

Travel Time and Waveform Measurements of Global Multibounce Seismic Waves Using Virtual Station Seismogram Stacks

Autor: Hongyu Lai, Edward J. Garnero

Publikováno v: Geochemistry, Geophysics, Geosystems, Vol 21, Iss 1, Pp n/a-n/a (2020)

Abstract We construct geographically localized bin stacks of waveforms, called virtual stations, to enhance signal‐to‐noise ratios (SNRs) for travel time and waveform measurements of multibounce S and ScS phases (S up to S6 and ScS up to ScS5), a

Externí odkaz: https://doaj.org/article/66c1d114ad754de69286998ca101e4d5

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Akademický článek

Compositionally-distinct ultra-low velocity zones on Earth’s core-mantle boundary

Autor: Mingming Li, Allen K. McNamara, Edward J. Garnero, Shule Yu

Publikováno v: Nature Communications, Vol 8, Iss 1, Pp 1-9 (2017)

Ultralow velocity zones are detected on the core-mantle boundary, but their origin is enigmatic. Here, the authors find that the global distribution and large variations of morphology of ultralow velocity zones are consistent with most having a compo

Externí odkaz: https://doaj.org/article/5afd738e00fa4937880d5296217abed9

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Globally distributed subducted materials along the Earth’s core-mantle boundary: Implications for ultralow velocity zones

Autor: Samantha E. Hansen, Edward J. Garnero, Mingming Li, Sang-Heon Shim, Sebastian Rost

Publikováno v: Science Advances. 9

Ultralow velocity zones (ULVZs) are the most anomalous structures within the Earth’s interior; however, given the wide range of associated characteristics (thickness and composition) reported by previous studies, the origins of ULVZs have been deba

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::27cbbe820fb5b312b5803099e3dcef72
https://doi.org/10.1126/sciadv.add4838

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Historical Interstation Pattern Referencing (HIPR): an application to PcP waves recorded in the Antarctic for ULVZ imaging

Autor: Samantha E. Hansen, Sebastian Rost, Edward J. Garnero

Much of our knowledge on deep Earth structure is based on detailed analyses of seismic waveforms that often have small amplitude arrivals on seismograms; therefore, stacking is essential to obtain reliable signals above the noise level. We present a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c2fd18f808697365eb175ec0c41216ba
https://eprints.whiterose.ac.uk/179283/1/2021JB022741.pdf

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Earth’s Structure, Lower Mantle

Autor: Allen K. McNamara, James A. Tyburczy, Edward J. Garnero

Publikováno v: Encyclopedia of Solid Earth Geophysics ISBN: 9783030104757
Encyclopedia of Solid Earth Geophysics ISBN: 9789048187010

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e47767931fc126f203ef67e5de2bbad2
https://doi.org/10.1007/978-3-030-58631-7_131

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