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| 青海湖第四纪晚期沉积地震地层特征分析 | |
| 引用本文： | 王平,安芷生,常宏,王苏民,沈吉,李小强,张毅祥,孙千里,宋友桂,艾莉.青海湖第四纪晚期沉积地震地层特征分析[J].盐湖研究,2009,17(1). |
| 作者姓名： | 王平 安芷生 常宏 王苏民 沈吉 李小强 张毅祥 孙千里 宋友桂 艾莉 |
| 作者单位： | 1. 中国科学院南海海洋研究所,广东广州,510301 2. 中国科学院地球环境研究所,陕西西安,710075 3. 中国科学院南京湖泊与地理研究所,江苏南京,210008 |
| 基金项目： | 国家重点基础研究发展规划(973计划) |
| 摘 要： | 青海湖是我国最大的内陆湖泊,目前的水域面积约4400 km2,流域面积约29660 km2。通过在湖内进行高分辨率浅层剖面探测(GeoPulse),发现不同发育阶段的沉积特征在地震剖面上得到很好的反映。Geopulse高分辨率浅层剖面穿透深度约60 m(分辨率为0.5 m),沉积层序在湖盆中央近水平展布,揭示沉积环境相对稳定,但也有局部的扰动或错断。尤其在南部近岸部位,上表层沉积出现弯曲,说明第四纪的晚近期,青海湖有过新的构造运动。 |
| 关 键 词： | 青海湖 高分辨率浅层剖面 地震地层 |
Analysis on the Characteristic of Seismic Stratigraphy of Later Quaternary Sediment in Qinghai Lake |
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| WANG Ping,AN Zhi-sheng,CHANG Hong,WANG Su-min,SHEN Ji,LI Xiao-qiang,ZHANG Yi-xiang,SUN Qian-li,SONG You-gui,AI Li.Analysis on the Characteristic of Seismic Stratigraphy of Later Quaternary Sediment in Qinghai Lake[J].Journal of Salt Lake Research,2009,17(1). | |
| Authors: | WANG Ping AN Zhi-sheng CHANG Hong WANG Su-min SHEN Ji LI Xiao-qiang ZHANG Yi-xiang SUN Qian-li SONG You-gui AI Li |
| Abstract: | Qinghai Lake is the largest inland closed-basin lake in China,with an water area of 4 400 km2 and a drainage area of about 29 660 km2.Based on the geopulse high resolution sub-bottom profile survey,the later quaternary sediment characteristics in the lake are revealed on the sub-bottom profiles clearly.The penetration and resolution of the sub-bottom profiles are 60 m and 0.5 m respectively.The profiles in the basin center present a near level sediment stratum that reveals a stable sedimentary environment of the lake.However,there are also some disturbed sediment layer or small faults in basin boundary,especially,in the south nearshore area of the lake.It suggests that there was neo-tectonic movement in later quaternary in Qinghai lake. |
| Keywords: | Qinghai lake High resolution profile Seismic stratigraphy |
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