Abstract
A miniaturized absolute gravimeter, the FG5L was tested at Ogiri geothermal field. One day of measurements at a site provided a gravity value with an error of about 10 microGal. However, the fluctuations in the daily values greatly exceeded the daily estimated error. The FG5L is far from being useful for geothermal reservoir monitoring. The FG5, which was upgraded from the FG5L, was tested at Yanaizu-Nishiyama geothermal field. The FG5 requires only a few days to provide useful results at each survey location. Therefore one FG5 gravimeter can be used at all the geothermal fields in Japan that are being monitored. We have already used it at the 5 existing gravity networks.
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References
Hashimoto, K., Horikoshi, T. And Kikuchi, T. (2002) Development of techniques for reservoir monitoring — current status of the project, Proc. 24th New Zealand geothermal workshop, pp.109–114.
NEDO (1999) Theme 2: Gravity monitoring, The fiscal 1998 Report for the project of the development of technology for reservoir mass and heat flow characterization — monitoring and modeling of reservoir mass and heat flows.
NEDO (2002) Theme 2: Gravity monitoring, The fiscal 2001 Report for the project of the development of technology for reservoir mass and heat flow characterization — monitoring and modeling of reservoir mass and heat flows.
Nishi, K., Hiraoka, Y., Kimura, I., Okubo, S., Furuya, M., Matsumoto, S., Fukuda, Y., Higashi, T. and Sugihara, M. (2002) Relative comparison of FG5 absolute gravimeter (2), 96th meeting abstracts, the Geodetic Society of Japan.
Ohta, H., Yamanobe, H., Shiga, N., Tosha, T., Takemura, T. and Kobayashi, E. (2001) Gravity monitoring of the Yanaizu-Nishiyama geothermal field, Japan, GRC Trans., 25, pp.669–674.
Williams, S. D. P., Baker, T. F. and Jeffries, G. (2001) Absolute gravity measurements at UK tide gauges, Geophys. Res. Lett., 28, pp.2317–2320.
Yamamoto, K., Ishihara, K., Okubo, S. and Araya, A. (2001) Accurate evaluation of ocean tide loading effects for gravity in nearshore region: the FG5 measurements at Sakurajima volcano in Kagoshima Bay, Japan, Geophys. Res. Lett., 28, pp. 1807–1810.
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© 2005 Springer-Verlag Berlin Heidelberg
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Sugihara, M. (2005). Geothermal Reservoir Monitoring with Absolute Gravimetry. In: Sansò, F. (eds) A Window on the Future of Geodesy. International Association of Geodesy Symposia, vol 128. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-27432-4_97
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DOI: https://doi.org/10.1007/3-540-27432-4_97
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-24055-6
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