Results 21 to 30 of about 118 (99)

Monitoring ground deformation of eruption center by ground-based interferometric synthetic aperture radar (GB-InSAR): a case study during the 2015 phreatic eruption of Hakone volcano

Earth, Planets and Space, 2018
We successfully monitored the ground deformation of an eruption center during the 2015 phreatic eruption of Hakone volcano, Japan, using ground-based interferometric synthetic aperture radar (GB-InSAR).
Senro Kuraoka, Yuichi Nakashima, Ryosuke Doke, Kazutaka Mannen   +3 more
doaj   +1 more source

Direct and indirect luminescence dating of tephra: A review

Journal of Quaternary Science, Volume 35, Issue 1-2, Page 39-53, January-February 2020., 2020
ABSTRACT In Quaternary studies, tephras are widely used as marker horizons to correlate geological deposits. Therefore, accurate and precise dating is crucial. Among radiometric dating techniques, luminescence dating has the potential to date tephra directly using glass shards, volcanic minerals that formed during the eruption or mineral fragments that
Janina Johanna Bösken, Christoph Schmidt   +1 more
wiley   +1 more source

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

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

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

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

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

Correction: Doke, R., et al. Very Local Subsidence near the Hot Spring Region in Hakone Volcano, Japan, Inferred from InSAR Time Series Analysis of ALOS/PALSAR Data. Remote Sens. 2020, 12, 2842

Remote Sensing, 2020
The authors wish to make the following corrections to this paper [...]
Ryosuke Doke, George Kikugawa, Kazuhiro Itadera   +2 more
doaj   +1 more source

GNSS Observation and Monitoring of the Hakone Volcano and the 2015 Unrest

Journal of Disaster Research, 2018
In recent years, earthquake swarm activities have occurred at the Hakone Volcano in the western area of Kanagawa Prefecture, Japan, with a frequency of once in several years. Global Navigation Satellite System (GNSS) observations have detected the inflation of volcanic edifice during these activities.
Ryosuke Doke, Masatake Harada, Kazuki Miyaoka   +2 more
openaire   +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