Zobrazeno 1 - 10
of 99
pro vyhledávání: '"Jeroen Ritsema"'
Publikováno v:
Communications Earth & Environment, Vol 4, Iss 1, Pp 1-9 (2023)
Abstract The upper boundary of the mantle transition zone, known as the “410-km discontinuity”, is attributed to the phase transformation of the mineral olivine (α) to wadsleyite (β olivine). Here we present observations of triplicated P-waves
Externí odkaz:
https://doaj.org/article/e1389a96706742bb9d07d460313aa933
Autor:
Molly M. Range, Brian K. Arbic, Brandon C. Johnson, Theodore C. Moore, Vasily Titov, Alistair J. Adcroft, Joseph K. Ansong, Christopher J. Hollis, Jeroen Ritsema, Christopher R. Scotese, He Wang
Publikováno v:
AGU Advances, Vol 3, Iss 5, Pp n/a-n/a (2022)
Abstract The Chicxulub crater is the site of an asteroid impact linked with the Cretaceous‐Paleogene (K‐Pg) mass extinction at ∼66 Ma. This asteroid struck in shallow water and caused a large tsunami. Here we present the first global simulation
Externí odkaz:
https://doaj.org/article/d4072c9b3b2a42a28286cf73c2028bca
Publikováno v:
Progress in Earth and Planetary Science, Vol 7, Iss 1, Pp 1-16 (2020)
Abstract Mantle tomography reveals the existence of two large low-shear-velocity provinces (LLSVPs) at the base of the mantle. We examine here the hypothesis that they are piles of oceanic crust that have steadily accumulated and warmed over billions
Externí odkaz:
https://doaj.org/article/445f98e3fe4840da8c0f472da015a16f
Publikováno v:
Nature Communications, Vol 8, Iss 1, Pp 1-10 (2017)
Large-low-shear-wave velocity provinces (LLSVPs) are present at the core–mantle boundary. Here, the authors show that splitting of Stoneley modes is probably due to a lower density of LLSVPs than the surrounding mantle because of the presence of po
Externí odkaz:
https://doaj.org/article/b4b21a9cc504422aa050b3a5b1d0920a
Publikováno v:
Bulletin of the Seismological Society of America. 113:577-591
Although the Brune source model describes earthquake moment release as a single pulse, it is widely used in studies of complex earthquakes with multiple episodes of high moment release (i.e., multiple subevents). In this study, we investigate how cor
Publikováno v:
Geophysical Journal International. 231:2144-2155
SUMMARY Long-period (T > 10 s) shear wave reflections between the surface and reflecting boundaries below seismic stations are useful for studying phase transitions in the mantle transition zone (MTZ) but shear-velocity heterogeneity and finite-frequ
Although the Brune source model describes earthquake moment release as a single pulse, it is widely used in studies of complex earthquakes with multiple episodes of high moment release (i.e., multi...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ee478bca931503b30a7f03672217f65f
https://doi.org/10.1002/essoar.10510127.2
https://doi.org/10.1002/essoar.10510127.2
Publikováno v:
Mantle Convection and Surface Expressions
Under equilibrium conditions, the mineral olivine (α) transforms to wadsleyite (β) near 410 km depth1,2. The phase transition is a global boundary known as the “410-km discontinuity”, where seismic wave speed and density increase by 3–10 perc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1a279c654a6645aadde2d0baef115344
https://doi.org/10.21203/rs.3.rs-1128948/v1
https://doi.org/10.21203/rs.3.rs-1128948/v1