Insights on the upper mantle beneath the Eastern Alps.

Irene Bianchi; Maghan S. Miller; Götz Bokelmann

doi:10.1016/j.epsl.2014.06.051

Insights on the upper mantle beneath the Eastern Alps.

Irene Bianchi
, Maghan S. Miller
, Götz Bokelmann

Institut für Meteorologie und Geophysik

Veröffentlichungen: Beitrag in Fachzeitschrift › Artikel › Peer Reviewed

Abstract

Analyses of Ps and Sp receiver functions from datasets collected by permanent and temporary seismic stations, image a seismic discontinuity, due to a negative velocity contrast across the entire Eastern Alps. The receiver functions show the presence of the discontinuity within the upper mantle with a resolution of tens of kilometers laterally. It is deeper (100-130 km) below the central portion of the Eastern Alps, and shallower (70-80 km) towards the Pannonian Basin and in the Central Alps. Comparison with previous studies renders it likely that the observed discontinuity coincides with the lithosphere-asthenosphere boundary (LAB) east of 15°E longitude, while it could be associated with a low velocity zone west of 15°E.

Originalsprache	Englisch
Seiten (von - bis)	199-209
Seitenumfang	11
Fachzeitschrift	Earth and Planetary Science Letters
Jahrgang	403
DOIs	https://doi.org/10.1016/j.epsl.2014.06.051
Publikationsstatus	Veröffentlicht - 1 Okt. 2014

Fördermittel

Data provided by the Virtual European Broadband Seismic Network at the Orfeus Data Center, The Netherlands; we thank Gert-Jan van den Hazel for his help in retrieving the data. We thank Carla Barnaba and the Working Group OASIS (2011) \u2013 The OGS Archive System of Instrumental Seismology: http://oasis.crs.inogs.it for the data collected by the NI network. We are grateful to the teams responsible of the station deployment and data collection during the ALPASS project, lead by E. Br\u00FCckl, Technical University of Vienna and G.R. Keller, University of Texas at El Paso (stations provided by IRIS/UTEP). For the deployment and data collection of the CBP project we thank G. Houseman and G. Stuart of the University of Leeds. We thank C. Legendre for providing his Vs velocity model. We thank J. Park for kindly providing his code to compute the P-receiver functions. We acknowledge I. Koulakov for his regional model of the upper mantle beneath Europe and Asia, used here for comparison. This paper was funded in part by NSF CAREER award ( EAR-1054638 ). Figures were created using GMT ( Wessel and Smith, 1998 ). We thank P. Shearer, E. Br\u00FCckl, and W. Geissler, whose comments improved the manuscript significantly. We acknowledge funding by the Austrian Science Fund ( FWF ): 26391 and 24218 .

ÖFOS 2012

105106 Geodynamik
105122 Seismik
105102 Allgemeine Geophysik

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title = "Insights on the upper mantle beneath the Eastern Alps.",

abstract = "Analyses of Ps and Sp receiver functions from datasets collected by permanent and temporary seismic stations, image a seismic discontinuity, due to a negative velocity contrast across the entire Eastern Alps. The receiver functions show the presence of the discontinuity within the upper mantle with a resolution of tens of kilometers laterally. It is deeper (100-130 km) below the central portion of the Eastern Alps, and shallower (70-80 km) towards the Pannonian Basin and in the Central Alps. Comparison with previous studies renders it likely that the observed discontinuity coincides with the lithosphere-asthenosphere boundary (LAB) east of 15°E longitude, while it could be associated with a low velocity zone west of 15°E.",

keywords = "Eastern Alps, Lithosphere-asthenosphere boundary, Low velocity zone, P-receiver functions, S-receiver functions, Upper mantle",

author = "Irene Bianchi and Miller, \{Maghan S.\} and G{\"o}tz Bokelmann",

note = "Funding Information: Data provided by the Virtual European Broadband Seismic Network at the Orfeus Data Center, The Netherlands; we thank Gert-Jan van den Hazel for his help in retrieving the data. We thank Carla Barnaba and the Working Group OASIS (2011) – The OGS Archive System of Instrumental Seismology: http://oasis.crs.inogs.it for the data collected by the NI network. We are grateful to the teams responsible of the station deployment and data collection during the ALPASS project, lead by E. Br{\"u}ckl, Technical University of Vienna and G.R. Keller, University of Texas at El Paso (stations provided by IRIS/UTEP). For the deployment and data collection of the CBP project we thank G. Houseman and G. Stuart of the University of Leeds. We thank C. Legendre for providing his Vs velocity model. We thank J. Park for kindly providing his code to compute the P-receiver functions. We acknowledge I. Koulakov for his regional model of the upper mantle beneath Europe and Asia, used here for comparison. This paper was funded in part by NSF CAREER award ( EAR-1054638 ). Figures were created using GMT ( Wessel and Smith, 1998 ). We thank P. Shearer, E. Br{\"u}ckl, and W. Geissler, whose comments improved the manuscript significantly. We acknowledge funding by the Austrian Science Fund ( FWF ): 26391 and 24218 .",

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AU - Bokelmann, Götz

N1 - Funding Information: Data provided by the Virtual European Broadband Seismic Network at the Orfeus Data Center, The Netherlands; we thank Gert-Jan van den Hazel for his help in retrieving the data. We thank Carla Barnaba and the Working Group OASIS (2011) – The OGS Archive System of Instrumental Seismology: http://oasis.crs.inogs.it for the data collected by the NI network. We are grateful to the teams responsible of the station deployment and data collection during the ALPASS project, lead by E. Brückl, Technical University of Vienna and G.R. Keller, University of Texas at El Paso (stations provided by IRIS/UTEP). For the deployment and data collection of the CBP project we thank G. Houseman and G. Stuart of the University of Leeds. We thank C. Legendre for providing his Vs velocity model. We thank J. Park for kindly providing his code to compute the P-receiver functions. We acknowledge I. Koulakov for his regional model of the upper mantle beneath Europe and Asia, used here for comparison. This paper was funded in part by NSF CAREER award ( EAR-1054638 ). Figures were created using GMT ( Wessel and Smith, 1998 ). We thank P. Shearer, E. Brückl, and W. Geissler, whose comments improved the manuscript significantly. We acknowledge funding by the Austrian Science Fund ( FWF ): 26391 and 24218 .

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N2 - Analyses of Ps and Sp receiver functions from datasets collected by permanent and temporary seismic stations, image a seismic discontinuity, due to a negative velocity contrast across the entire Eastern Alps. The receiver functions show the presence of the discontinuity within the upper mantle with a resolution of tens of kilometers laterally. It is deeper (100-130 km) below the central portion of the Eastern Alps, and shallower (70-80 km) towards the Pannonian Basin and in the Central Alps. Comparison with previous studies renders it likely that the observed discontinuity coincides with the lithosphere-asthenosphere boundary (LAB) east of 15°E longitude, while it could be associated with a low velocity zone west of 15°E.

AB - Analyses of Ps and Sp receiver functions from datasets collected by permanent and temporary seismic stations, image a seismic discontinuity, due to a negative velocity contrast across the entire Eastern Alps. The receiver functions show the presence of the discontinuity within the upper mantle with a resolution of tens of kilometers laterally. It is deeper (100-130 km) below the central portion of the Eastern Alps, and shallower (70-80 km) towards the Pannonian Basin and in the Central Alps. Comparison with previous studies renders it likely that the observed discontinuity coincides with the lithosphere-asthenosphere boundary (LAB) east of 15°E longitude, while it could be associated with a low velocity zone west of 15°E.

KW - Eastern Alps

KW - Lithosphere-asthenosphere boundary

KW - Low velocity zone

KW - P-receiver functions

KW - S-receiver functions

KW - Upper mantle

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DO - 10.1016/j.epsl.2014.06.051

M3 - Article

SN - 0012-821X

VL - 403

SP - 199

EP - 209

JO - Earth and Planetary Science Letters

JF - Earth and Planetary Science Letters

ER -

Insights on the upper mantle beneath the Eastern Alps.

Abstract

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ÖFOS 2012

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