Japan Geoscience Union Meeting 2016

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Poster

Symbol S (Solid Earth Sciences) » S-SS Seismology

[S-SS32] Crustal Deformation

Mon. May 23, 2016 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall HALL6)

Convener:*Masayuki Murase(Department of Earth and Environmental Sciences, College of Humanities and Sciences, NIHON University), Ryosuke Doke(Hot Springs Research Institute of Kanagawa Prefecture)

5:15 PM - 6:30 PM

[SSS32-P15] Rainfall correction of the Extensometer at Matsushiro

*Kazuhiro Kimura1, Akio Kobayashi1, Minoru Funakoshi2 (1.Meteorological Research Institute, 2.Matsushiro Seismological Observatory, Earthquake and Tsunami Observation Division, Seismological and Volcanological Department, Japan Meteological Agency)

Keywords:Extensometer, rainfall correction, shuffled complex evolution method developed at the university of arizona

Japan Meteorological Agency (JMA) installed the quartz tube extensometer of 100m in the tunnel at Matsushiro (Nagano city, Japan). This extensometer data is stable for several decades, but is influenced by the rainfall. Nishimae and Wakui (1996) tried the rainfall correction using a tank model for N-S component of this extensometer. They successfully estimated parameters of the model by trial and error.
We estimate parameters of the tank model by Shuffled Complex Evolution method developed at the University of Arizona (SCE-UA method). The parameters estimated are similar each other.
In addition, we introduce the rainfall correction by the tank model of E-W component of this extensometer.