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Coseismic Effects of the 2011 Magnitude 9.0 Tohoku-Oki Earthquake Measured at Far East Russia Continental Coast by Gravity and GPS Methods
Institute of Petroleum Geology and Geophysics, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia
V. I. Il’ichev Pacific Oceanological Institute, Far Eastern Branch of Russian Academy of Science, Vladivostok, Russia
V. I. Il’ichev Pacific Oceanological Institute, Far Eastern Branch of Russian Academy of Science, Vladivostok, Russia
Institute of Automatic and Electrometry Siberian, Branch of Russian Academy of Sciences, Novosibirsk, Russia
Institute of Automatic and Electrometry Siberian, Branch of Russian Academy of Sciences, Novosibirsk, Russia
Georges Lema?tre Centre for Earth and Climate Research, Catholic University of Louvain, Leuven, Belgium
Institute of Tectonics and Geophysics, Far Eastern Branch of Russian Academy of Sciences, Khabarovsk, Russia
Institute of Petroleum Geology and Geophysics, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia
Institute of Automatic and Electrometry Siberian, Branch of Russian Academy of Sciences, Novosibirsk, Russia
Institute of Petroleum Geology and Geophysics, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia
Institute of Tectonics and Geophysics, Far Eastern Branch of Russian Academy of Sciences, Khabarovsk, Russia
V. I. Il’ichev Pacific Oceanological Institute, Far Eastern Branch of Russian Academy of Science, Vladivostok, Russia
V. I. Il’ichev Pacific Oceanological Institute, Far Eastern Branch of Russian Academy of Science, Vladivostok, Russia
- 1 Institute of Petroleum Geology and Geophysics, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia
- 2 V. I. Il’ichev Pacific Oceanological Institute, Far Eastern Branch of Russian Academy of Science, Vladivostok, Russia
- 3 V. I. Il’ichev Pacific Oceanological Institute, Far Eastern Branch of Russian Academy of Science, Vladivostok, Russia
- 4 Institute of Automatic and Electrometry Siberian, Branch of Russian Academy of Sciences, Novosibirsk, Russia
- 5 Institute of Automatic and Electrometry Siberian, Branch of Russian Academy of Sciences, Novosibirsk, Russia
- 6 Georges Lema?tre Centre for Earth and Climate Research, Catholic University of Louvain, Leuven, Belgium
- 7 Institute of Tectonics and Geophysics, Far Eastern Branch of Russian Academy of Sciences, Khabarovsk, Russia
- 8 Institute of Petroleum Geology and Geophysics, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia
- 9 Institute of Automatic and Electrometry Siberian, Branch of Russian Academy of Sciences, Novosibirsk, Russia
- 10 Institute of Petroleum Geology and Geophysics, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia
- 11 Institute of Tectonics and Geophysics, Far Eastern Branch of Russian Academy of Sciences, Khabarovsk, Russia
- 12 V. I. Il’ichev Pacific Oceanological Institute, Far Eastern Branch of Russian Academy of Science, Vladivostok, Russia
- 13 V. I. Il’ichev Pacific Oceanological Institute, Far Eastern Branch of Russian Academy of Science, Vladivostok, Russia
International Journal of Geosciences·Volume 04 (2013)·Pages 362–370·Published 25 March 2013·DOI10.4236/ijg.2013.42034
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Abstract
This work presents the results of complex gravity observation performed at Shults Cape, Gamov peninsula (42.58° N, 131.15° E), Russia. Absolute laser gravimeter GABL type and Scintrex type relative gravimeter were used for measurement. To investigate the accuracy of tidal corrections we compared the observed tidal parameters of the main tidal waves O1 and M2 with modeled ones computed from 6 different ocean tidal models: CSR4, FES02, FES04, GOT00, NAO99 and TPX06. After discussion a theoretical model based on TPX06 ocean tides model and DDW99 non hydrostatic body tides model was used for tidal correction of absolute gravity data. Preliminary estimate of gravity effect induced by the Tohoku-Oki earthquake of11 March 2011Mw = 9.0 at Primorye territory (Russia) was found to be 5.1 ± 2.0 μGal. Co-seismic crustal displacements revealed by GPS data at Far EastRussiacontinental coast are also investigated. Volumetric dilatation of this area is observed at +1.7 × 10 -8 level.
KeywordsAbsolute GravimetryGPSTidal Gravity Modeling and ObservationScintrex GravimeterCo-Seismic Effect for Tohoku-Oki Earthquake
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