Tomography study of the upper mantle around the TESZ based on PASSEQ experiment data

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F17%3A00475111" target="_blank" >RIV/67985530:_____/17:00475111 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.pepi.2017.01.002" target="_blank" >http://dx.doi.org/10.1016/j.pepi.2017.01.002</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.pepi.2017.01.002" target="_blank" >10.1016/j.pepi.2017.01.002</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Tomography study of the upper mantle around the TESZ based on PASSEQ experiment data

Popis výsledku v původním jazyce

We present a detailed velocity-perturbation model of the Earth's upper mantle in the area around the Trans-European Suture Zone (TESZ) imaged by the teleseismic tomography. The model is based on 12473 P-wave arrival times measured on recordings of 273 stations of the PASsive Seismic Experiment (PASSEQ), which was active during 2006 and 2008. Station and teleseismic event distribution is sufficient to resolve the structure below the PASSEQ array down to a depth of similar to 350 km. The velocity-perturbation model clearly shows a similar to 250-km-thick uniform layer of positive velocity perturbations north-east of the Teisseyre-Tornquist Zone (TTZ) and similar to 150-km-thick layer south-west of the TTZ characterized by relatively lower velocity perturbations. The former we associate with the Precambrian mantle lithosphere of the European plate, while the latter represents the much younger Phanerozoic lithosphere. In the uppermost layer of the model (similar to 40 km), the boundary between the two regions closely follows the crustal trace of the TTZ. In deeper layers, the boundary shifts south-westward. At a depth of approximately 120 km the region with positive perturbations reaches the northern part of the Bohemian Massif (BM). The shift suggests that the Phanerozoic part of the European plate thrusts over the Precambrian lithosphere. The upper mantle below a depth of similar to 250 km lacks the pronounced division between the two regions around the TESZ, which allows us to associate these depths with asthenospheric part of the upper mantle.

Název v anglickém jazyce

Tomography study of the upper mantle around the TESZ based on PASSEQ experiment data

Popis výsledku anglicky

We present a detailed velocity-perturbation model of the Earth's upper mantle in the area around the Trans-European Suture Zone (TESZ) imaged by the teleseismic tomography. The model is based on 12473 P-wave arrival times measured on recordings of 273 stations of the PASsive Seismic Experiment (PASSEQ), which was active during 2006 and 2008. Station and teleseismic event distribution is sufficient to resolve the structure below the PASSEQ array down to a depth of similar to 350 km. The velocity-perturbation model clearly shows a similar to 250-km-thick uniform layer of positive velocity perturbations north-east of the Teisseyre-Tornquist Zone (TTZ) and similar to 150-km-thick layer south-west of the TTZ characterized by relatively lower velocity perturbations. The former we associate with the Precambrian mantle lithosphere of the European plate, while the latter represents the much younger Phanerozoic lithosphere. In the uppermost layer of the model (similar to 40 km), the boundary between the two regions closely follows the crustal trace of the TTZ. In deeper layers, the boundary shifts south-westward. At a depth of approximately 120 km the region with positive perturbations reaches the northern part of the Bohemian Massif (BM). The shift suggests that the Phanerozoic part of the European plate thrusts over the Precambrian lithosphere. The upper mantle below a depth of similar to 250 km lacks the pronounced division between the two regions around the TESZ, which allows us to associate these depths with asthenospheric part of the upper mantle.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10507 - Volcanology

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physics of the Earth and Planetary Interiors

ISSN

0031-9201

e-ISSN

—

Svazek periodika

266

Číslo periodika v rámci svazku

May

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

29-38

Kód UT WoS článku

000400717700003

EID výsledku v databázi Scopus

2-s2.0-85015383799