Results 21 to 30 of about 78,912 (151)

Resistivity characterisation of Hakone volcano, Central Japan, by three-dimensional magnetotelluric inversion

Earth, Planets and Space, 2018
On 29 June 2015, a small phreatic eruption occurred at Hakone volcano, Central Japan, forming several vents in the Owakudani geothermal area on the northern slope of the central cones.
Ryokei Yoshimura, Yasuo Ogawa, Yohei Yukutake, Wataru Kanda, Shogo Komori, Hideaki Hase, Tada-nori Goto, Ryou Honda, Masatake Harada, Tomoya Yamazaki, Masato Kamo, Shingo Kawasaki, Tetsuya Higa, Takeshi Suzuki, Yojiro Yasuda, Masanori Tani, Yoshiya Usui   +16 more
doaj   +1 more source

Eastward Inclination of Hakone Volcano and Tanna Fault

Journal of Geography (Chigaku Zasshi), 2011
It is demonstrated that the eastern side of the Tanna fault has subsided relative to the western side using digital mesh data of geographic altitudes. The estimated subsidence is concordant with accumulated displacements of the Tanna fault and the fault slip at the 1930 Kita-Izu earthquake.
YOSHIDA, Akio, HARADA, Masatake, ODAWARA, Kei   +2 more
openaire   +2 more sources

Chronology of the 2015 eruption of Hakone volcano, Japan: geological background, mechanism of volcanic unrest and disaster mitigation measures during the crisis

Earth, Planets and Space, 2018
The 2015 eruption of Hakone volcano was a very small phreatic eruption, with total erupted ash estimated to be in the order of only 102 m3 and ballistic blocks reaching less than 30 m from the vent.
Kazutaka Mannen, Yohei Yukutake, George Kikugawa, Masatake Harada, Kazuhiro Itadera, Jun Takenaka   +5 more
doaj   +1 more source

Precursory ground deformation of the 2018 phreatic eruption on Iwo-Yama volcano, revealed by four-dimensional joint analysis of airborne and spaceborne InSAR

Earth, Planets and Space, 2020
We present detailed maps of local-scale 3D deformation preceding the 2018 phreatic eruption at Iwo-yama volcano (south of Kyushu Island, Japan), using a combination of airborne and spaceborne Interferometric Synthetic Aperture Radar (InSAR) data.
Shohei Narita, Taku Ozawa, Yosuke Aoki, Masanobu Shimada, Masato Furuya, Youichiro Takada, Makoto Murakami   +6 more
doaj   +1 more source

Precursory tilt changes associated with a phreatic eruption of the Hakone volcano and the corresponding source model

Earth, Planets and Space, 2018
The 2015 unrest of the Hakone volcano in Japan, which began on April 26, generated earthquake swarms accompanied by long-term deformation. The earthquake swarm activity reached its maximum in mid-May and gradually calmed down; however, it increased again
Ryou Honda, Yohei Yukutake, Yuichi Morita, Shin’ichi Sakai, Kazuhiro Itadera, Kazuya Kokubo   +5 more
doaj   +1 more source

Earthquake catalog of Deep low-frequency earthquake beneath the Hakone volcano, central Japan

, 2019
This is a earthquake catalog of Deep low-frequency earthquakes (DLFEs) occurred beneath the Hakone volcano, central Japan, in the period from 2000 to 2016. This catalog was obtained by using the Matched Filter method.
Yohei Yukutake (7322285)
core   +1 more source

Temporal changes in inflation sources during the 2015 unrest and eruption of Hakone volcano, Japan

Earth, Planets and Space, 2018
Global navigation satellite system data from Hakone volcano, central Japan, together with GEONET data from the Geospatial Information Authority of Japan, were used to investigate the processes associated with the volcanic activity in 2015, which ...
Masatake Harada, Ryosuke Doke, Kazutaka Mannen, Kazuhiro Itadera, Mikio Satomura   +4 more
doaj   +1 more source

3He/4He ratio distribution in and around the Hakone volcano.

GEOCHEMICAL JOURNAL, 1992
To investigate a fine structure of the 3He/4He ratio distribution in and around a single volcano, fumarolic gases, geothermal gases and waters were collected at 13 sites within the caldera of the Hakone volcano, Japan. The 3He/4He and 4He/20Ne ratios vary from 6.7 × 10-6 to 9.6 × 10-6, and 0.85 to 26, respectively. The 3He/4He ratios, corrected for air
Sakamoto, Minoru, Sano, Yuji, Wakita, Hiroshi   +2 more
openaire   +2 more sources

Source constraints for the 2015 phreatic eruption of Hakone volcano, Japan, based on geological analysis and resistivity structure

Earth, Planets and Space, 2019
On June 29, 2015, a small phreatic eruption occurred in the most intensively steaming area of Hakone volcano, Japan. A previous magnetotelluric survey for the whole volcano revealed that the eruption center area (ECA) was located near the apex of a bell ...
Kazutaka Mannen, Toshikazu Tanada, Akira Jomori, Takashi Akatsuka, George Kikugawa, Yui Fukazawa, Hiroyuki Yamashita, Koichiro Fujimoto   +7 more
doaj   +1 more source

Analyzing the continuous volcanic tremors detected during the 2015 phreatic eruption of the Hakone volcano

Earth, Planets and Space, 2017
In the present study, we analyze the seismic signals from a continuous volcanic tremor that occurred during a small phreatic eruption of the Hakone volcano, in the Owakudani geothermal region of central Japan, on June 29, 2015.
Yohei Yukutake, Ryou Honda, Masatake Harada, Ryosuke Doke, Tatsuhiko Saito, Tomotake Ueno, Shin’ichi Sakai, Yuichi Morita   +7 more
doaj   +1 more source