Mantle dynamics beneath Greece from SKS and PKS seismic anisotropy study

Kaviris, G.; Fountoulakis, I.; Spingos, I.; Millas, C.; Papadimitriou, P.; Drakatos, G.

doi:10.1007/s11600-018-0225-z

Artykuł - szczegóły

Tytuł artykułu

Mantle dynamics beneath Greece from SKS and PKS seismic anisotropy study

Autorzy

Kaviris G. , Fountoulakis I. , Spingos I. , Millas C. , Papadimitriou P. , Drakatos G.

Wybrane pełne teksty z tego czasopisma

https://www.springer.com/journal/11600

Identyfikatory

DOI

10.1007/s11600-018-0225-z

Warianty tytułu

Języki publikacji

Abstrakty

SKS and PKS splitting parameters were determined in the broader Greek region using data from 45 stations of the Hellenic Unified Seismological Network and the Kandilli Observatory and Earthquake Research Institute, utilizing teleseismic events that occurred between 2010 and 2017. Data were processed for shear-wave splitting with the Minimum Energy Method that was considered the optimal. The results generally confirm the existence of anisotropic zonation in the Hellenic subduction system, with alternating trench-normal and trench-parallel directions. The zonation is attributed to the upper and lower olivine fabric layers that can, potentially, be present in the subduction zone. At the edges of this zone, two possible toroidal flow cases have been identified, implying the existence of tears that allow the inflow of asthenospheric material in the mantle wedge. The high number of null measurements in the KZN and XOR stations indicates a possible anisotropic transition zone between the fore-arc and back-arc areas. SKS and PKS splitting results are jointly interpreted, given that they yield similar values in most cases.

Słowa kluczowe

shear wave splitting Hellenic Subduction Zone tear mantle wedge

rozdzielenie fali poprzecznej

Wydawca

Instytut Geofizyki PAN
Springer

Czasopismo

Acta Geophysica

Rocznik

2018

Tom

Vol. 66, no. 6

Strony

1341--1357

Opis fizyczny

Bibliogr. 100 poz.

Twórcy

autor

Kaviris G.

gkaviris@geol.uoa.gr

Section of Geophysics and Geothermics, Department of Geology and Geoenvironment, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 157 84 Athens, Greece

autor

Fountoulakis I.

Section of Geophysics and Geothermics, Department of Geology and Geoenvironment, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 157 84 Athens, Greece

autor

Spingos I.

Section of Geophysics and Geothermics, Department of Geology and Geoenvironment, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 157 84 Athens, Greece

autor

Millas C.

Section of Geophysics and Geothermics, Department of Geology and Geoenvironment, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 157 84 Athens, Greece

autor

Papadimitriou P.

Section of Geophysics and Geothermics, Department of Geology and Geoenvironment, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 157 84 Athens, Greece

autor

Drakatos G.

Geodynamic Institute, National Observatory of Athens, Lofos Nymfon, Thission, 11810 Athens, Greece

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).

Typ dokumentu

Bibliografia

Identyfikator YADDA

bwmeta1.element.baztech-140e8379-c594-457c-ab48-13a5d9a5f340