HIGH-RESOLUTION BODY WAVE TOMOGRAPHY BENEATH THE SVEKALAPKO ARRAY - II. ANOMALOUS UPPER MANTLE STRUCTURE BENEATH THE CENTRAL BALTIC SHIELD
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dc.contributor.author | Sandoval S. | |
dc.contributor.author | Kissling E. | |
dc.contributor.author | Ansorge J. | |
dc.date.accessioned | 2022-10-27T10:15:42Z | |
dc.date.available | 2022-10-27T10:15:42Z | |
dc.date.issued | 2004 | |
dc.identifier | https://elibrary.ru/item.asp?id=27977738 | |
dc.identifier.citation | Geophysical Journal International, 2004, 157, 1, 200-214 | |
dc.identifier.issn | 0956-540X | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/39195 | |
dc.description.abstract | A number of different geodynamic models have been proposed to explain the early tectonic evolution of the Baltic Shield. To provide additional geophysical constraints on these models, we performed a teleseismic tomography traveltime inversion for the central part of the Baltic Shield. The SVEKALAPKO project is focused on the investigation of the lithosphere-asthenosphere structure down to 400 km depth under central Fennoscandia (Baltic Shield). A total of 143 stations were deployed including 15 permanent stations from the Finnish seismic network. The temporal network was composed of 40 broad-band and 88 short-period instruments distributed in a rectangular array of 1000 km by 900 km from 1998 August to 1999 May. The results are based on a non-linear teleseismic tomography algorithm. They reveal significant P-velocity variations (up to 4 per cent) throughout the SVEKALAPKO array. The most prominent feature is a positive anomaly that can be followed down to 250 km depth beneath the centre of the array. | |
dc.subject | Fennoscandian Shield | |
dc.subject | lithosphere | |
dc.subject | teleseismic tomography | |
dc.title | HIGH-RESOLUTION BODY WAVE TOMOGRAPHY BENEATH THE SVEKALAPKO ARRAY - II. ANOMALOUS UPPER MANTLE STRUCTURE BENEATH THE CENTRAL BALTIC SHIELD | |
dc.type | Статья |
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