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喀喇昆仑断裂带磁组构特征及其构造意义 被引量:21
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作者 周勇 许荣华 +3 位作者 阎月华 杨灿尧 罗伟 潘裕生 《岩石学报》 SCIE EI CAS CSCD 北大核心 2000年第1期134-144,共11页
本文讨论了喀喇昆仑断裂带的磁组构特征。磁化率几何平均值随岩石所含矿物不同而有很大改变 ,校正磁各向异性度 PJ在变形强弱不同的岩石中有较大区别。大多数磁化率椭球体有良好的磁面理和最短轴方位 ,表现出强烈的压扁型应变型式 ;最... 本文讨论了喀喇昆仑断裂带的磁组构特征。磁化率几何平均值随岩石所含矿物不同而有很大改变 ,校正磁各向异性度 PJ在变形强弱不同的岩石中有较大区别。大多数磁化率椭球体有良好的磁面理和最短轴方位 ,表现出强烈的压扁型应变型式 ;最短轴方位被视为最大主应力方向 ,在工作区呈 NE- SW向 ,并有低至中等大小的倾角 ,由于喀喇昆仑断裂走向 NNW-SSE,表明其走滑运动为右旋 ,在不同地区断裂两盘则有不同的垂向差异运动。同位素测年数据表明喀喇昆仑断裂的这次构造运动发生在中新世后期 ( 6 .88± 0 .36至 8.75± 0 .2 5 Ma)。 展开更多
关键词 磁组构 喀喇昆仑 构造意义 岩石 断裂带
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山崩连续体模式之数值仿真(英文)
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作者 郭志禹 张国桢 +4 位作者 蕃安佑 陈健志 戴义钦 董家钧 陈柔妃 《福建地质》 2010年第A01期141-143,共3页
Recent advances in landslide/avalanche modeling have been enabling us to investigate the kinematics of such catastrophic events with much more details.Taiwan is located in a region where seismic activities and extreme... Recent advances in landslide/avalanche modeling have been enabling us to investigate the kinematics of such catastrophic events with much more details.Taiwan is located in a region where seismic activities and extreme weather conditions frequently occur.One of their common consequences is the slope failure.In the past decodes,we witnessed at least three giant landslides:Tsaoling,Jiufenershan landslides,triggered by the Chi-Chi earthquake 展开更多
关键词 山崩模拟 浅水波方程 广义地型 小林村山崩
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运用历史航照及地形图建置数值地形资料并探讨1941年草岭山崩之地形演育(英文)
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作者 陈柔妃 张国桢 +1 位作者 詹瑜璋 郭志禹 《福建地质》 2010年第A01期144-146,共3页
In tectonically active mountain belts such as the Taiwan(Fig.1a),frequent landslides affect the stability of mountain slopes,and landslides favour river erosion of disrupted masses.In the climatic and geodynamic conte... In tectonically active mountain belts such as the Taiwan(Fig.1a),frequent landslides affect the stability of mountain slopes,and landslides favour river erosion of disrupted masses.In the climatic and geodynamic context of Taiwan with heavy rainfall,approximate typhoon frequency of 3 -5 per year,rapid uplift of~5-10 mm yr^(-1) and strong denudation rate.Landslides are among the most common earthquake induced secondary effects and are causing huge damage 展开更多
关键词 地震诱发山崩 数值地形分析 航空照片 革岭
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草岭山崩机制及后续地表作用估算(英文)
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作者 张国桢 陈柔妃 +1 位作者 詹瑜璋 郭志禹 《福建地质》 2010年第A01期147-148,共2页
The Tsaoling rock-and-soil avalanche is the largest landslides triggered by the Chi-Chi earthquake(Taiwan,1999).In addition,because of the periodic reoccurrence of gigantic slides since 19 century,instruments installe... The Tsaoling rock-and-soil avalanche is the largest landslides triggered by the Chi-Chi earthquake(Taiwan,1999).In addition,because of the periodic reoccurrence of gigantic slides since 19 century,instruments installed and aerial photo scans regularly around the Tsaoling area.Besides of massive field observations,several periods of Digital Terrain Models(DTMs) generated by aerial photos sets have also been deployed to investigate and calculate the coseismic and post-seismic morphological changes. 展开更多
关键词 草岭山崩) 河阶 侵蚀速率
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