Special Issue: Ground Magnetic Observations: New technologies and the role in understanding the Earth System
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Investigation of the Onikobe geyser, NE Japan, by observing the ground tilt and flow parameters
Earth, Planets and Space volume 58, pages e21–e24 (2006)
In this study we conducted observations of the Onikobe geyser, NE Japan, by deploying a tiltmeter and an acoustic sensor close to the vent, a flow pressure sensor at the conduit exit, and measuring water temperature at ground level. The data from these instruments are consistent with the model of geysers which involves effusion process of boiling due to depressurization. During the observation period, the geyser generally effused water for about 90 s every 10 mins, although during certain periods these times randomly shortened to about 60 s and 6 mins, respectively. Tilt records show a strong correlation with the short and long effusion times, reflecting water movement in at least two chambers beneath the vent. We are able to empirically predict the duration of effusion from tilt data, although flow pressure does not vary with effusion time.
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Nishimura, T., Ichihara, M. & Ueki, S. Investigation of the Onikobe geyser, NE Japan, by observing the ground tilt and flow parameters. Earth Planet Sp 58, e21–e24 (2006). https://doi.org/10.1186/BF03351967