Experimental investigations of coupling behaviors between transformation and deformation at high pressure

高压下相变与变形耦合行为的实验研究

• 批准号: 23654190
• 负责人: KUBO TOMOAKI
• 金额: $ 2.25万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23654190/
• 关键词: 相転移カイネティクス; 変形; 放射光X線; 高温高圧実験; マントル対流; 沈み込むプレート; 深発地震; 塑性流動; 放射光Ｘ線; 沈み込む海洋プレート; ＡＥ測定; 相転移; 放射光; 高圧実験; マントル; 対流運動

In order to understand mechanisms of deep earthquakes and large deformations of subducting oceanic plates in mantle convective currents, we have investigated the coupling behaviors between transformation and deformation in mantle minerals at high pressures. Kinetics of various types of reactions occurred in convective mantle have been examined with and without deformation mainly by synchrotron radiation (SOR) in-situ X-ray observations. We succeeded to obtain both transformation-time (t-t) and stress-strain (s-s) curves by using deformation multi-anvil (D-DIA) apparatus. We also preliminarily combined the SOR D-DIA system with newly developed multiple acoustic emission (AE) measurement system, which enables to simultaneously observe reaction kinetics, creep behaviors, and shear instability. The in-situ s-s-t-t-AE observation system developed in this study will be a powerful tool to reveal complex behaviors of subducting plates in mantle transition zone.

为了理解地幔对流中深震和俯冲洋板块大变形的机制，我们研究了高压下地幔矿物相变和变形的耦合行为。本文主要利用同步辐射X射线原位观测研究了对流地幔在变形和不变形条件下发生的各种反应的动力学。利用多砧变形装置（D-DIA）成功地获得了相变-时间（t-t）曲线和应力-应变（s-s）曲线。我们还初步将SOR D-DIA系统与新开发的多声发射（AE）测量系统相结合，可以同时观察反应动力学，蠕变行为和剪切不稳定性。本研究开发的s-s-t-t-AE原位观测系统将为揭示地幔过渡带俯冲板块的复杂行为提供有力的工具。

项目成果

次世代放射光源を用いた高圧下でのカイネティクス研究の模索

使用下一代同步加速器辐射源探索高压下的动力学研究

• 发表时间: 2012
• 作者: 川本竜彦;三部賢治;H. Bureau;S. Reguer;C. Mocuta;S. Kubsky;ほか;久保友明
• 通讯作者: 久保友明

Geophysical and mineralogical constraints on the post-spinel transformation for the Tonga slab

• DOI: 10.1016/j.pepi.2012.02.009
• 发表时间: 2012-04
• 期刊: Physics of the Earth and Planetary Interiors
• 影响因子: 2.3
• 作者: S. Kaneshima;T. Kubo;S. Yoshioka

Changes in flow strength induced by the decomposition of polycrystalline albite

多晶钠长石分解引起的流动强度变化

• 发表时间: 2011
• 作者: N. Doi;T. Kato;T. Kubo;M. Noda;R. Shiraishi Ohnuma;A. Suzuki;E. Ohtani;T. Kikegawa
• 通讯作者: T. Kikegawa

アルバイト分解反応と塑性流動の相互作用

钠长石分解反应与塑性流动之间的相互作用

• 发表时间: 2011
• 作者: 土井菜保子;加藤工;久保友明;野田真彦;白石令;鈴木昭夫;大谷栄治;亀卦川卓美
• 通讯作者: 亀卦川卓美

In-situ XRD Study of the Olivine-Ringwoodite Phase Transformation Kinetics : Application for Effects of Water on Its Growth Kinetics

橄榄石-尖木石相变动力学的原位 XRD 研究：水对其生长动力学影响的应用

• 发表时间: 2012
• 作者: S. Wang;T. Kubo;J. Ning;Y. Higo;K. Funakoshi
• 通讯作者: K. Funakoshi