Abstract
We performed three-dimensional density modeling of Showa-Shinzan lava dome, Usu, Japan, by joint inversion of the gravity anomaly and recently obtained muon radiography data. Our multilayer emulsion muon detector significantly reduces the background noise in our measurements of the muon flux through the dome. The high-quality muon data enables us to more accurately reconstruct the density structure of the lava dome compared with our own previous work. We find that the lava dome consists of a cylindrical column of massive lava with a diameter of 300 m, and that there is no evidence of magma intrusion in the shallow part of the plateau, located east of the dome.
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References
Ambrosino, F., Anastasio, A., Bross, A., Béné, S., Boivin, P., Bonechi, L., et al. (2015). Joint measurement of the atmospheric muon flux through the Puy de Dôme volcano with plastic scintillators and Resistive Plate Chambers detectors. Journal of Geophysical Research Solid Earth, 120(11), 7290–7307. (2015JB011969).OA.
Arrabito, L., Barbuto, E., Bozza, C., Buontempo, S., Consiglio, L., Coppola, D., et al. (2006). Hardware performance of a scanning system for high speed analysis of nuclear emulsions. Nuclear Instruments and Methods A, 568, 578–587.
Davis, K., & Oldenburg, D. W. (2012). Joint 3D inversion of muon tomography and gravity data to recover density. ASEG Extended Abstracts, 1, 1–4.
Geological Survey of Japan. (2013). Gravity Database of Japan DVD edition, digital geoscience map P-2. Tsukuba: Geological Survey of Japan, AIST.
Goto, Y., & Johmori, A. (2014). Resitivity structure of the Showa-Shinzan dome at Usu volcano, Hokkaido, Japan. Bulletin of the Volcanological Society of Japan, 59, 1–11.
Groom, D. E., Mokhov, N. V., & Striganov, S. I. (2001). Muon stopping power and range tables 10 MeV–100 TeV. Atomic Data and Nuclear Data Tables, 78, 183–356.
Jourde, K., Gibert, D., & Marteau, J. (2015). Improvement of density models of geological structures by fusion of gravity data and cosmic muon radiographies. Geoscientific Instrumentation Methods and Data Systems, 4, 177–188.
Komazawa, M., Okuma, S., Matsushima, N., & Satoh, H. (2010). Explanation note of gravity anomaly map–geophysical maps of Usu Volcano, digital geoscience Map P-7(CD). AIST: Geological Survey of Japan.
Lesparre, N., Gibert, D., Marteau, J., Komorowski, J., Nicollin, F., & Coutant, O. (2012). Density muon radiography of La soufriére of Guadeloupe volcano: Comparison with geological, electrical resistivity and gravity data. Geophysical Journal International, 190(2), 1008–1019.
Mimatsu, M., (1962). Diary of the growth of Showa-Shinzan: Mimatsu Masao Memorial Museum.
Minakami, T., Ishikawa, T., & Yagi, K. (1951). The 1944 eruption of volcano Usu in Hokkaido, Japan. Bulletin Volcanologique, 11, 45–157.
Nakamura, S., & Mori, T. (1949). On the mechanism of the formation of the Showa new mountain of Usu volcano. Science Reports of the Tohoku Imperial University Series, 5(1), 45–49.
Nakamura, T., Ariga, A., Ban, T., Fukuda, T., Fukuda, T., Fujioka, T., et al. (2006). The OPERA film: New nuclear emulsion for large-scale, high-precision experiments. Nuclear Instruments and Methods A, 556, 80–86.
Nemoto, T., Hayakawa, M., Takahashi, K., & Oana, S. (1957). Report on geological, geophysical and geochemical studies of Usu volcano (Showa-Shinzan): Rep. Geological Survey of Japan, 170, 1–149.
Nishida, Y., & Miyajima, E. (1984). Subsurface structure of Usu volcano, Japan as revealed by detailed magnetic survey. Journal of Volcanology and Geothermal Research, 22, 271–285.
Nishiyama, R., Tanaka, Y., Okubo, S., Oshima, H., Tanaka, H. K. M., & Maekawa, T. (2014a). Integrated processing of muon radiography and gravity anomaly data toward the realization of high-resolution 3-D density structural analysis of volcanoes: Case study of Showa-Shinzan Lava Dome, Usu, Japan. Journal of Geophysical Research Solid Earth, 119, 699–710.
Nishiyama, R., Miyamoto, S., & Naganawa, N. (2014b). Experimental study of source of background noise in muon radiography using emulsion film detectors. Geoscientific Instrumentation Methods and Data Systems, 3, 29–39.
Nishiyama, R., Taketa, A., Miyamoto, S., & Kasahara, K. (2016). Monte Carlo simulation for background study of geophysical inspection with cosmic-ray muons. Geophysical Journal International, 206, 1039–1050.
Oba, Y., Katsui, Y., Kurasawa, H., Ikeda, Y., & Uda, T. (1983). Petrology of historic rhyolite and dacite from Usu volcano, North Japan. Journal of the Faculty of Science Hokkaido University Series IV, 20, 274–290.
Okubo, S., & Tanaka, H. K. M. (2012). Imaging the density profile of a volcano interior with cosmic-ray muon radiography combined with classical gravimetry. Measurement Science and Technology, 23, 16.
Oláh, L., Barnaföldi, G. G., Hamar, G., Melegh, H. G., & Varga, D. (2012). CCC-based muon telescope for examination of natural caves. Geoscientific Instrumentation Methods and Data Systems, 1, 229–234.
Tanaka, H. K. M., Nakano, T., Takahashi, S., Yoshida, J., Ohshima, H., Maekawa, T., et al. (2007). Imaging the conduit size of the dome with cosmic-ray muons: The structure beneath Showa-Shinzan lava dome, Japan. Geophysical Research Letters, 34(22), L22311.
Tanaka, H. K. M., Miyajima, H., Kusagaya, T., Taketa, A., Uchida, T., & Tanaka, M. (2011). Cosmic muon imaging of hidden seismic fault zones: Rainwater premeation into the mechanical fractured zones in Itoigawa-Shizuoka Tectonic Line, Japan. Earth and Planetary Science Letters, 306(3), 156–162.
Tarantola, A., & Nercessian, A. (1984). Three-dimensional inversion without blocks. Geophysical Journal of the Royal Astronomical Society, 76, 299–306.
Tioukov, V., Kreslo, I., Petukhov, Y., & Sirri, G. (2006). The FEDRA: Framework for emulsion data reconstruction and analysis in the opera experiment. Nuclear Instruments and Methods A, 559, 103–105.
Acknowledgements
We thank Prof. Mitsuhiro Nakamura and his colleagues at the F-lab, Nagoya University for technical assistance with the emulsion films. We thank Dr. Cristiano Bozza and Dr. Valeri Tioukov for their enormous help with the emulsion analysis. We thank Mr. Saburo Mimatsu for giving permission to conduct the gravity survey on Mt. Showa-Shinzan. Beautification Escort Staff at Shikotsu-Toya National Park kindly offered us the site for muon radiography observations. We thank two anonymous reviewers for beneficial comments to improve the manuscript. This work was supported in part by JSPS KAKENHI Grant Number 23244092. One of the authors (R. N.) was supported by JSPS Fellowship (DC2, 25-9317) during this project.
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Nishiyama, R., Miyamoto, S., Okubo, S. et al. 3D Density Modeling with Gravity and Muon-Radiographic Observations in Showa-Shinzan Lava Dome, Usu, Japan. Pure Appl. Geophys. 174, 1061–1070 (2017). https://doi.org/10.1007/s00024-016-1430-9
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DOI: https://doi.org/10.1007/s00024-016-1430-9