セッション概要

   

固体地球科学(S) / 固体地球科学複合領域・一般(CG) /  **国際セッション
S-CG15 Detection of microcracks prior to rupture and layered interfaces by the seismoelectronical method


プログラム掲載短縮名 Microcracks and crustal structure
口頭発表
発表日時/会場/座長
5月24日 PM1 (15:15 - 16:00) 203 Grobbe Niels  藤縄 幸雄 
5月24日 PM2 (16:15 - 18:00) 203 芳原 容英  Huang Qinghua 
ポスター発表
発表日時/会場
5月24日 (コアタイム 18:15 - 19:30) コンベンションホール
連絡先 藤縄 幸雄
メールアドレス hjfujinawa@cl.cilas.net
コンビーナ 藤縄 幸雄  芳原 容英  Huang Qinghua  Grobbe Niels 
スコープ 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.
発表者への注意事項  


時間 講演番号 タイトル 著者 発表者 予稿原稿
口頭発表   5月24日  PM1(15:15-16:00)  203        このページのtopへ
15:15 - 15:35 ★招待
SCG15-01
Electromagnetic fields in the solid material neighbouring porous media REN, Hengxin
HUANG, Qinghua
CHEN, Xiaofei
REN, Hengxin 日本語
English
15:35 - 15:50 SCG15-02 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 高野 忠
塙 陸也
川田 裕貴
ほか
高野 忠 日本語
English
口頭発表   5月24日  PM2(16:15-18:00)  203        このページのtopへ
16:15 - 16:35 ★招待
SCG15-03
Medium effect on the characteristics of electromagnetic signals accompanying with seismic waves HUANG, Qinghua
REN, Hengxin
HUANG, Qinghua 日本語
English
16:35 - 16:50 SCG15-04 地震直前の微小クラックに伴う電界現象の特性 藤縄 幸雄
野田 洋一
藤縄 幸雄 日本語
English
16:50 - 17:05 SCG15-05 The Mechanism of the Pre-seismic Changes of the Tidal Deviation of Groundwater Level in Hualien City, Taiwan LAI, Wenchi
WANG, Shihjung
HSU, Kuochon
ほか
LAI, Wenchi 日本語
English
17:05 - 17:25 ★招待
SCG15-06
Seismoelectric Interferometry GROBBE, Niels
SLOB, Evert
GROBBE, Niels 日本語
English
17:25 - 17:40 SCG15-07 Feasibility study of characterizing crustal cracks by EMR in the VLF band using interferometry LIU, Lanbo
HUANG, Qinghua
LIU, Lanbo 日本語
English
17:40 - 17:55 ポスター講演3分口頭発表枠 (SCG15-P01/SCG15-P02)


講演番号 タイトル 著者 発表者 予稿原稿
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
SCG15-P01 Towards Seismoelectric Inversion: Sensitivity Analysis using Resolution Functions GROBBE, Niels
MAAS, Peter
SLOB, Evert
ほか
GROBBE, Niels 日本語
English
SCG15-P02 Application Prospects of SKZ-1 4-component borehole strain meter KONG, Xiangyang
SU, Kaizhi
FUJINAWA, Yukio
KONG, Xiangyang 日本語
English