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プログラム掲載短縮名
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Microcracks and crustal structure
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口頭発表
発表日時／会場／座長
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5月24日 PM1 （15:15 - 16:00）
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203
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Grobbe Niels
藤縄 幸雄
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5月24日 PM2 （16:15 - 18:00）
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203
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芳原 容英
Huang Qinghua
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ポスター発表
発表日時／会場
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5月24日 （コアタイム 18:15 - 19:30）
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コンベンションホール
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連絡先
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藤縄 幸雄
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メールアドレス
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hjfujinawa@cl.cilas.net
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コンビーナ
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藤縄 幸雄
芳原 容英
Huang Qinghua
Grobbe Niels
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スコープ
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The microcrack has been widely investigated in various disciplines including seismology and geotechnical engineering communities. Disastrous natural events such as earthquakes, volcanic eruptions or landslides are considered as ruptures of the Earth's crust consisting of heterogeneous rocks. These ruptures have been known to be preceded by small microcracks in the preparatory stage. They are accompanied by so-called acoustic emission (AE) and seismo- electromagnetic phenomena providing means to investigate the rupture process of earthquake and ground slides, rock bursts in mines, and health check of tunnels.
Moreover, seismoelectronics has been developed as new windows to determine physical parameters of the crust and its fluids in the geophysical exploration using active sources. The method has been used for detecting the electrical, hydraulic, and/or mechanical properties by measuring the mechanical energy conversion characteristics into electromagnetic energy at crustal macroscopic interfaces.
The research on the seismo-electromagnetic fields had a remarkable progress in the early 1990's. Examples are 1) the seismoelectric conversion generating an independently diffusing electromagnetic field at material contrasts for surveying for oil and gas, 2) the coupling between seismic and electromagnetic phenomena, 3) the ULF band anomalies associated the slow-slip of subducting slab, 4) the combination of both seismic resolution and electromagnetic (fluid) sensitivity, and 5) the possible detection of micro-cracks preceding natural earthquakes.
We intend to present state-of-the-art investigations on microcracks in a variety of disciplines, amongst which are new findings using seismoelectric phenomena and other new techniques for understanding of the microcracks preceding crustal ruptures. We hope to contribute in building a more practical short-term prediction method and in developing geophysical prospecting.
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発表者への注意事項
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| 時間 |
講演番号 |
タイトル |
著者 |
発表者 |
予稿原稿 |
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口頭発表 5月24日 PM1（15:15-16:00） 203 このページのtopへ
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15:15 - 15:35
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★招待
SCG15-01
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Electromagnetic fields in the solid material neighbouring porous media
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REN, Hengxin
HUANG, Qinghua
CHEN, Xiaofei
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REN, Hengxin
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15:35 - 15:50
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SCG15-02
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岩石破壊に伴う電波放射実験における金属接触雑音の排除
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高野 忠
塙 陸也
川田 裕貴
ほか
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高野 忠
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口頭発表 5月24日 PM2（16:15-18:00） 203 このページのtopへ
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16:15 - 16:35
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★招待
SCG15-03
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Medium effect on the characteristics of electromagnetic signals accompanying with seismic waves
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HUANG, Qinghua
REN, Hengxin
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HUANG, Qinghua
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16:35 - 16:50
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SCG15-04
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地震直前の微小クラックに伴う電界現象の特性
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藤縄 幸雄
野田 洋一
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藤縄 幸雄
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16:50 - 17:05
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SCG15-05
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The Mechanism of the Pre-seismic Changes of the Tidal Deviation of Groundwater Level in Hualien City, Taiwan
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LAI, Wenchi
WANG, Shihjung
HSU, Kuochon
ほか
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LAI, Wenchi
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17:05 - 17:25
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★招待
SCG15-06
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Seismoelectric Interferometry
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GROBBE, Niels
SLOB, Evert
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GROBBE, Niels
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17:25 - 17:40
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SCG15-07
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Feasibility study of characterizing crustal cracks by EMR in the VLF band using interferometry
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LIU, Lanbo
HUANG, Qinghua
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LIU, Lanbo
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17:40 - 17:55
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ポスター講演3分口頭発表枠 (SCG15-P01/SCG15-P02)
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| 講演番号 |
タイトル |
著者 |
発表者 |
予稿原稿 |
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ポスター発表 5月24日 コア（18:15-19:30） コンベンションホール このページのtopへ
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SCG15-P01
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Towards Seismoelectric Inversion: Sensitivity Analysis using Resolution Functions
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GROBBE, Niels
MAAS, Peter
SLOB, Evert
ほか
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GROBBE, Niels
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SCG15-P02
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Application Prospects of SKZ-1 4-component borehole strain meter
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KONG, Xiangyang
SU, Kaizhi
FUJINAWA, Yukio
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KONG, Xiangyang
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