Space geodesy in geodynamic studies: Recent movements in the Zeya-Bureya Basin |
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| Authors: | A I Miroshnichenko A P Sorokin V A San’kov A V Lukhnev S V Ashurkov A T Sorokina N I Panfilov M A Serov S I Sherman |
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| Institution: | (1) Institute of the Earth’s Crust, Siberian Division, Russian Academy of Sciences, Irkutsk, Russia;(2) Institute of Geology and Nature Management, Far East Division, Russian Academy of Sciences, Blagoveshchensk, Russia |
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| Abstract: | The Amur-Zeya geodynamic test ground was set up in 2000 to study recent intracontinental crustal deformations. The velocity field calculations for the period of 2000 to 2003 describe three movements scales. The general level is characterized by the vectors of IGS sites in the eastern part of Asia, the BLAG (Blagoveshchensk) site included. The southeast movement of the IRKT (Irkutsk) site of the stable Siberian Platform is indicative of deformations in the northeastern part of the Amur Plate. Measurement data on the regional near-latitudinal profile Blagoveshchensk-Sutara, which crosses the Nizhnyaya Zeya Basin, demonstrate a southwestward displacement of the Badzhal-Bureya-Lesser Khingan block relative to the North China block. The dynamic effect of the convergent boundary between the Amur and Okhotsk Sea plates is assumed to extend inland also involving the Zeya-Bureya Basin area. The measurements on the local geodynamic test site relate the deformations of buildings and constructions in the Settlement of Konstantinovka to the mobility of basement faults in the southern part of the Nizhnyaya Zeya Basin. Aseismic deformations are determined by slow horizontal tectonic movements in the junction zone of NNE-trending structures of the latter basin and near-latitudinal faults of the Khailar-Xunhei Belt. |
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| Keywords: | recent geodynamics GPS geodesy Zeya-Bureya Basin |
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