| 青藏高原湖泊涨缩的新构造运动意义 |
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| 引用本文： | 陈兆恩,林秋雁.青藏高原湖泊涨缩的新构造运动意义[J].地震,1993(1):29-40,52. |
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| 作者姓名： | 陈兆恩 林秋雁 |
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| 作者单位： | 国家地震局分析预报中心
(陈兆恩)，中国科技大学研究生院(林秋雁) |
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| 摘 要： | 青藏高原位于我国的西南部,平均海拔4000—5000m。第四纪以来强烈的新构造运动,引起地壳大幅度的隆起,迫使湖泊出现了大规模的退缩及迁移。新的湖泊不断产生或扩大,古老的湖泊又不断消亡或缩小,形成了湖泊变化与构造活动周期的对应性。本文在分析了青藏高原的地貌、第四纪地质,特别是活断层及地震活动性研究的基础上,对于高原≥4km~2的367个湖泊进行了卫片解译,并取得了较好的效果。
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| 关 键 词： | 地震活动性 湖泊 涨缩 新构造运动 |
SIGNIFICANCE OF NEOTECTONIC MOVEMENT OF LAKE EXTENSION AND SHRINKAGE IN QINGHAI-TIBET PLATEAU |
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| Chen Zhaoen Lin Qinyan.SIGNIFICANCE OF NEOTECTONIC MOVEMENT OF LAKE EXTENSION AND SHRINKAGE IN QINGHAI-TIBET PLATEAU[J].Earthquake,1993(1):29-40,52. |
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| Authors: | Chen Zhaoen Lin Qinyan |
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| Abstract: | Qinghai-Tibet plateau is located in Southwest China with average elevation of 4000-5000 m. Since Quaternary strong neotectonic movement has caused large crustal uplifting, resulted in large-scale lake shrinking and migration. New lakes contineously formed and old lakes were disappeared or shrinked. There was a periodic relation between lake change and neotectonic activity. Based on analyses of geomorpr-ology, Quaternary geology, especially active faults and seismicity, this paper proposed the interpretation of satellite images of 367 lakes (>4Km2 in area) and a quite good result was obtained. |
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| Keywords: | lake geometry lake migration |
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