Magma discharge variations during the 2011 eruptions of Shinmoe-dake volcano, Japan, revealed by geodetic and satellite observations

Kozono, Tomofumi; Ueda, Hitoshi; Ozawa, Taku; Koyaguchi, Takehiro; Fujita, Eisuke; Tomiya, Akihiko; Suzuki, Yujiro

doi:10.1007/s00445-013-0695-4

Cited by 77 publications

(77 citation statements)

References 23 publications

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“…Also note that the temporal resolution of GPS data is low, and so the estimated rates of volume changes just represent temporal averages. Rapid temporal variation of the discharge rate during a climax event has been demonstrated by Kozono et al (2013) using high time-resolution tilt data, but it is impossible with our GPS data.…”

Section: Volume Change Of the Magma Reservoir Beneath Shinmoe-dake Vomentioning

confidence: 82%

Volume change of the magma reservoir relating to the 2011 Kirishima Shinmoe-dake eruption—Charging, discharging and recharging process inferred from GPS measurements

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Section: Volume Change Of the Magma Reservoir Beneath Shinmoe-dake Vomentioning

confidence: 82%

Volume change of the magma reservoir relating to the 2011 Kirishima Shinmoe-dake eruption—Charging, discharging and recharging process inferred from GPS measurements

et al. 2013

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“…We note that the deflation volume and rate are not equal to erupted volume and rate of discharge of lava from the vent, respectively; such relations depend on the elastic properties and bubble content of magma. Precise estimation of erupted volume and discharge rate of each eruption was conducted by Kozono et al (2013). They combined the temporal volumetric change of the magma chamber estimated by the geodetic data during the eruption with that of accumulating lava in the crater measured by Synthetic Aperture Radar (SAR) images during the continuous lava effusion.…”

Section: Crustal Deformationmentioning

confidence: 99%

Crustal deformation associated with the 2011 Shinmoe-dake eruption as observed by tiltmeters and GPS

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The National Research Institute for Earth Science and Disaster Prevention (NIED) developed volcano observation stations at the Kirishima volcanic group in 2010. The stations observed remarkable crustal deformation and seismic tremors associated with the Shinmoe-dake eruption in 2011. The major eruptive activity began with sub-Plinian eruptions (January 26) before changing to explosive eruptions and continuous lava effusion into the summit crater (from January 28). The observation data combined with GEONET data of GSI indicated a magma chamber located about 7 km to the northwest of Shinmoe-dake at about 10 km depth. The tiltmeter data also quantified detailed temporal volumetric changes of the magma chamber due to the continuous eruptions. The synchronized tilt changes with the eruptions clearly show that the erupted magma was supplied from the magma chamber; nevertheless, the stations did not detect clear precursory tilt changes and earthquakes showing ascent of magma from the magma chamber just before the major eruptions. The lack of clear precursors suggests that magma had been stored in a conduit connecting the crater and the magma chamber prior to the beginning of the sub-Plinian eruptions.

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“…5), suggesting sudden deflations of the magma chamber located northwest of Shinmoedake. Kozono et al (2013) calculated the magma fluxes for three subplinian events at about 450-563, 592-741 and 481-602 m 3 /s, respectively. Prior to the onset of the subplinian event on 26 January, volcanic earthquakes did not increase in frequency and no obvious direct precursor was observed.…”

Section: Overview Of the 2011 Eruption-time Sequencementioning

confidence: 99%

The 2011 eruptive activity of Shinmoedake volcano, Kirishimayama, Kyushu, Japan—Overview of activity and Volcanic Alert Level of the Japan Meteorological Agency—

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2013

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Magma discharge variations during the 2011 eruptions of Shinmoe-dake volcano, Japan, revealed by geodetic and satellite observations

Cited by 77 publications

References 23 publications

Volume change of the magma reservoir relating to the 2011 Kirishima Shinmoe-dake eruption—Charging, discharging and recharging process inferred from GPS measurements

Volume change of the magma reservoir relating to the 2011 Kirishima Shinmoe-dake eruption—Charging, discharging and recharging process inferred from GPS measurements

Crustal deformation associated with the 2011 Shinmoe-dake eruption as observed by tiltmeters and GPS

The 2011 eruptive activity of Shinmoedake volcano, Kirishimayama, Kyushu, Japan—Overview of activity and Volcanic Alert Level of the Japan Meteorological Agency—

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