岩石の粘弾性遷移挙動の構成則に基づく断層ダイナミクスの推定

基于岩石粘弹性转变行为本构定律的断层动力学估计

• 批准号: 06J05028
• 负责人: 川田 祐介
• 金额: $ 1.22万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2006
• 资助国家: 日本
• 起止时间: 2006 至 2008
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06J05028/
• 关键词: 粘弾性; 非平衡熱力学; ダメージメカニックス; フラクタル; ベニオフ電磁放射; 岩石磁化; 地震の余効変動; ラドン; 地震の時間統計則; ベニオフ歪; 浸透率

1.岩石の粘弾性構成則とその逆問題断層帯を含む地殻岩石の遷移挙動を記述するための粘弾性構成則は,時間のべき乗則に従う応答関数で定式化できる.これを用い,地表で観測される応力・歪データから地下(断層帯近傍など)のダイナミクスを調べるための逆問題について,計算機上での解析手法の構築を行なった.この研究の一部は,国際会議にて公表した.2.ダメージを含む岩石の粘弾性構成則と地震に伴う力学的・電磁気学的緩和過程上で導出された粘弾性構成則を拡張した,内部に脆性過程(クラックなどのダメージ発展)を伴う岩石の力学的挙動を記述する構成則を用いて,東北日本沈み込み帯における余効すべりの時系列パターンや,地震に先立つベニオフ電磁放射・岩石磁化変化のパターンを説明した.この研究成果の一部は国際誌(Nat.Hazards Earth Syst.Sci.)及び国際・国内会議にて公表し,また現在国内学会誌(地質学雑誌)に投稿・査読中である.3.岩石の粘弾性構成則と地殻内流体の移流・拡散岩石内部のダメージ発展(空隙率や空隙連結度の変化)に伴う岩石内流体の輸送特性(移流・拡散)の時間変化を,非平衡熱力学・統計力学(異常拡散理論)に基づいて記述した.さらにこの理論に基づいて1995年兵庫県南部地震に先行して発生した大気中ラドン濃度の増加や電離層擾乱が地殻のダメージ発展に起因することを説明した.また,英国エディンバラ大学のIan Main教授らのグループが行なった応力腐食に関する実験結果についても,上の理論に基づく考察を行なった.この研究成果の一部は国際誌(Nat.Hazards Earth Syst.Sci.)及び国際・国内会議にて公表し,現在国際誌(Phys.Chem.Earth)に投稿・査読中である.

1. On the basis of the formation of rock viscosity, there is a negative effect on the movement of rock mass in the ground, and on the other hand, in the case of rock viscosity formation, rock viscosity formation is caused by the formation of rock viscosity. In order to solve the problem, it is necessary to analyze the problem in the ground (near the ground). The calculation is based on the computer analysis method. In the first part of the study, the International Conference will discuss the public table. 2. The mechanical properties of rocks are affected by the formation of mechanical properties of rocks, such as the electromagnetism of earthquake-associated mechanics, and the formation of mechanical properties during the process. The internal brittleness process (thermal fatigue test) is associated with the dynamic behavior of rock mechanics, and a series of cycles are available in Shenyang, Japan. Before the earthquake, the magnetization of rock was induced by electromagnetization. A national magazine (Nat.Hazards Earth Syst.Sci.) And the official form of the International and domestic Conference, which is now in the course of contribution to the journal of the Institute of Science in China. 3. The viscous property of rock is formed by the formation of fluid transfer flow in the ground, which is accompanied by the time evolution of the transport characteristics of fluid in rock (voidage and voidage). The basic theory of non-equilibrium mechanical statistical mechanics (general theory) is recorded. On the basis of the basic theory of the 1995 earthquake in the southern part of the military database, the cause of the earthquake in the military database in 1995 was due to the increase in the intensity of the earthquake in the military database in the south of the military database in 1995. Professor Ian Main of the University of Hong Kong in the United Kingdom, a professor of science and technology, said that the food was rotten and the food was spoiled. The results showed that the theory was based on the investigation. A national magazine (Nat.Hazards Earth Syst.Sci.) And the official form of the International and domestic Conference, which is now in the contribution list of International Journal (Phys.Chem.Earth).

项目成果

Earthquake precursory phenomenon: an anomalous increase in atmospheric radon concentration

地震前兆现象：大气氡浓度异常增加

• 发表时间: 2007
• 作者: Hiroyuki Nagahama;Yusuke Kawada;Yasutaka Omori;Yumi Yasuoka;Tetsuo Ishikawa;Shinji Tokonami;Masaki Shinogi
• 通讯作者: Masaki Shinogi

Irreversible thermodynamic and viscoelastic model for power-law relaxation and attenuation of rocks

• DOI: 10.1016/j.tecto.2006.03.049
• 发表时间: 2006-12
• 期刊: Tectonophysics
• 影响因子: 2.9
• 作者: Y. Kawada;H. Nagahama;Hiroaki S. Hara

地震前兆期における地殻のダメージ発展過程とラドン散逸

地震前兆期地壳损伤发展过程及氡气消散

• 发表时间: 2007
• 作者: 長濱裕幸;川田祐介
• 通讯作者: 川田祐介

地震前兆の大気中ラドン濃度変化と地殻のダメージ発展過程

地震前兆的大气氡浓度变化及地壳损伤发展过程

• 发表时间: 2007
• 作者: 川田祐介;長濱裕幸;大森康孝;安岡由美;石川徹夫;床次眞司;志野木正樹
• 通讯作者: 志野木正樹

Variation of electric parameters in atmosphere due to radon exhalation prior to a large earthquake.

大地震前氡气释放引起的大气电参数变化。

• 发表时间: 2007
• 作者: Yasutaka Omori;Yumi Yasuoka;Hiroyuki Nagahama;Yusuke Kawada;Tetsuo Ishikawa;Shinji Tokonami;Masaki Shinogi
• 通讯作者: Masaki Shinogi