DSpace Collection: 2019-03-19
http://hdl.handle.net/2115/73340
2019-03-192024-03-29T15:20:42Z目次(英語)・奥付・裏表紙
http://hdl.handle.net/2115/73392
Title: 目次(英語)・奥付・裏表紙2019-03-18T15:00:00ZiGrav型超伝導重力計(#017)の道東カルデラ火山地域への移設 : 苫小牧から札幌・南新川を経て弟子屈へ(電子付録2)
http://hdl.handle.net/2115/73391
Title: iGrav型超伝導重力計(#017)の道東カルデラ火山地域への移設 : 苫小牧から札幌・南新川を経て弟子屈へ(電子付録2)
Authors: 名和, 一成; 池田, 博; 岡田, 和見; 高橋, 浩晃; 岡, 大輔2019-03-18T15:00:00Z名和, 一成池田, 博岡田, 和見高橋, 浩晃岡, 大輔iGrav型超伝導重力計(#017)の道東カルデラ火山地域への移設 : 苫小牧から札幌・南新川を経て弟子屈へ(電子付録1)
http://hdl.handle.net/2115/73390
Title: iGrav型超伝導重力計(#017)の道東カルデラ火山地域への移設 : 苫小牧から札幌・南新川を経て弟子屈へ(電子付録1)
Authors: 名和, 一成; 池田, 博; 岡田, 和見; 高橋, 浩晃; 岡, 大輔2019-03-18T15:00:00Z名和, 一成池田, 博岡田, 和見高橋, 浩晃岡, 大輔MT法による雌阿寒岳北麓の比抵抗構造探査:序報
http://hdl.handle.net/2115/73389
Title: MT法による雌阿寒岳北麓の比抵抗構造探査:序報
Authors: 井上, 智裕; 橋本, 武志
Abstract: We performed a broadband MT survey in the northern part of Mt. Meakandake, one of the active volcanoes in eastern Hokkaido to clarify the relationship between the subsurface electrical structure and the volcanic activities of this area. On the northeastern foot of Meakandake, remarkable crustal deformation from late 2016 through 2017. We planned a magnetotelluric survey to investigate the electrical structure across the deformation source. In this study, we describe the features of our MT data and show the 1-D models as a preliminary modeling. In the inversion, we only used a frequency range between about 0.1 and 100 Hz, in which the responses showed approximately a 1-D feature. The inverted 1-D models exhibited distinct low resistivity layer (1-10Ωm) at depths around a few hundred meters to 1 km at all sites. In addition, at the sites in the SE half of the survey line, another low resistivity layer of approximately 10Ωm was associated at a depth around 2-3 km.2019-03-18T15:00:00Z井上, 智裕橋本, 武志We performed a broadband MT survey in the northern part of Mt. Meakandake, one of the active volcanoes in eastern Hokkaido to clarify the relationship between the subsurface electrical structure and the volcanic activities of this area. On the northeastern foot of Meakandake, remarkable crustal deformation from late 2016 through 2017. We planned a magnetotelluric survey to investigate the electrical structure across the deformation source. In this study, we describe the features of our MT data and show the 1-D models as a preliminary modeling. In the inversion, we only used a frequency range between about 0.1 and 100 Hz, in which the responses showed approximately a 1-D feature. The inverted 1-D models exhibited distinct low resistivity layer (1-10Ωm) at depths around a few hundred meters to 1 km at all sites. In addition, at the sites in the SE half of the survey line, another low resistivity layer of approximately 10Ωm was associated at a depth around 2-3 km.iGrav型超伝導重力計(#017)の道東カルデラ火山地域への移設 : 苫小牧から札幌・南新川を経て弟子屈へ
http://hdl.handle.net/2115/73388
Title: iGrav型超伝導重力計(#017)の道東カルデラ火山地域への移設 : 苫小牧から札幌・南新川を経て弟子屈へ
Authors: 名和, 一成; 池田, 博; 岡田, 和見; 高橋, 浩晃; 岡, 大輔
Abstract: In November, 2018, continuous observation with the iGrav type superconducting gravimeter (#017) was started at the Teshikaga Observatory of the Hokkaido University in order to carry out high spatiotemporal resolution gravity monitoring in the volcanic area in eastern Hokkaido. The gravimeter used in a CCS project of Tomakomai site, was temporarily relocated to the Minami-shinkawa Observatory in September of the same year. And then it moved to the Teshikaga Observatory from Minami-shinkawa in November, just before entering the snowy season. In this paper, we report on the process of relocation and the data obtained during the process.2019-03-18T15:00:00Z名和, 一成池田, 博岡田, 和見高橋, 浩晃岡, 大輔In November, 2018, continuous observation with the iGrav type superconducting gravimeter (#017) was started at the Teshikaga Observatory of the Hokkaido University in order to carry out high spatiotemporal resolution gravity monitoring in the volcanic area in eastern Hokkaido. The gravimeter used in a CCS project of Tomakomai site, was temporarily relocated to the Minami-shinkawa Observatory in September of the same year. And then it moved to the Teshikaga Observatory from Minami-shinkawa in November, just before entering the snowy season. In this paper, we report on the process of relocation and the data obtained during the process.ロシア・カムチャツカ半島アバチンスキー火山での傾斜観測
http://hdl.handle.net/2115/73387
Title: ロシア・カムチャツカ半島アバチンスキー火山での傾斜観測
Authors: 高橋, 浩晃; 青山, 裕; 大園, 真子; 田中, 良; 伊藤, ちひろ; 渡邉, 早姫; 松島, 健; 山下, 裕亮; 宮町, 宏樹; 奥山, 哲; ゴルディエフ, エフゲニー; ムラビヨフ, ヤロスラフ; マグースキン, キリル; マリック, ナタリヤ; ミノロフ, イワン; チェブロフ, ダニラ
Abstract: Tiltmeter observation network with 4 stations were installed on active Avachinsky volcano, Kamchatka, Russia, in 2017. Bubble tilt sensors were equipped on base of pit. Waveform of a distance earthquake recorded at AVCT and UGLT stations indicated that the sensors were normal. Observation data for 9 days suggested long term tilt change of 30 μrad at AVCT and 300 μrad at UGLT, respectively. Daily tilt fluctuation at UGLT might reflect larger daily temperature change of air due to shallow pit depth. Proper pre-processing filtering is required based on noise characteristic investigation.2019-03-18T15:00:00Z高橋, 浩晃青山, 裕大園, 真子田中, 良伊藤, ちひろ渡邉, 早姫松島, 健山下, 裕亮宮町, 宏樹奥山, 哲ゴルディエフ, エフゲニームラビヨフ, ヤロスラフマグースキン, キリルマリック, ナタリヤミノロフ, イワンチェブロフ, ダニラTiltmeter observation network with 4 stations were installed on active Avachinsky volcano, Kamchatka, Russia, in 2017. Bubble tilt sensors were equipped on base of pit. Waveform of a distance earthquake recorded at AVCT and UGLT stations indicated that the sensors were normal. Observation data for 9 days suggested long term tilt change of 30 μrad at AVCT and 300 μrad at UGLT, respectively. Daily tilt fluctuation at UGLT might reflect larger daily temperature change of air due to shallow pit depth. Proper pre-processing filtering is required based on noise characteristic investigation.新燃岳の噴火における火山灰の拡散沈着シミュレーション
http://hdl.handle.net/2115/73386
Title: 新燃岳の噴火における火山灰の拡散沈着シミュレーション
Authors: 稲津, 將; 越石, 健太; 梶野, 瑞王
Abstract: This study performs the diffusion-deposition simulation for volcanic ash following its forecast procedure by the Japanese Meteorological Agency, for the case of the volcanic eruption at Mt. Shinmoedake on 26 January 2011 and 18 February 2011. The volcanic ash with a smaller particle size was transported farther from the crater, so that most of ash fall in the foothill consisted of the smaller particles. In contrast, the large particles were mostly deposited around the crater, but it contributed to the mass amount of ash fall even in the foothill. Compared with ash fall observation, the simulation successfully reproduced the amount of ash fall for these cases.2019-03-18T15:00:00Z稲津, 將越石, 健太梶野, 瑞王This study performs the diffusion-deposition simulation for volcanic ash following its forecast procedure by the Japanese Meteorological Agency, for the case of the volcanic eruption at Mt. Shinmoedake on 26 January 2011 and 18 February 2011. The volcanic ash with a smaller particle size was transported farther from the crater, so that most of ash fall in the foothill consisted of the smaller particles. In contrast, the large particles were mostly deposited around the crater, but it contributed to the mass amount of ash fall even in the foothill. Compared with ash fall observation, the simulation successfully reproduced the amount of ash fall for these cases.表紙・編集委員・目次(日本語)
http://hdl.handle.net/2115/73385
Title: 表紙・編集委員・目次(日本語)2019-03-18T15:00:00Z