| 近地表低降速带地震波传播规律初探 |
| |
| 引用本文： | 尹喜玲,石战结,田钢.近地表低降速带地震波传播规律初探[J].地球物理学进展,2009,24(2):398-407. |
| |
| 作者姓名： | 尹喜玲 石战结 田钢 |
| |
| 作者单位： | 1. 浙江大学地球科学系,杭州,310027
2. 浙江大学地球科学系,杭州,310027;大庆油田勘探开发研究院,大庆,163712 |
| |
| 摘 要： | 通过对沙漠区近地表地层大量微测井资料的对比分析发现,速度梯度带的存在可能是导致低降速带地震波衰减的一个重要原因.本文在沙漠地区低降速带速度结构分析的基础上,研究地震波在线性过渡体地层的传播规律,并同实际观测记录进行对比,从理论和实际上验证上述推论的正确性.
|
| 关 键 词： | 低降速带 地震波 传播规律 衰减 |
| 收稿时间： | 2008-6-12 |
| 修稿时间： | 2008-9-22 |
Study on transmittable laws of seismic waves in unconsolidated layers |
| |
| YIN Xi-ling,SHI Zhan-jie,Tian Gang.Study on transmittable laws of seismic waves in unconsolidated layers[J].Progress in Geophysics,2009,24(2):398-407. |
| |
| Authors: | YIN Xi-ling SHI Zhan-jie Tian Gang |
| |
| Abstract: | Through analyzing a lot of seismic data from micro-seismograms, we find that velocity gradient layers in unconsolidated sediments may arise attenuation of seismic waves. In the paper, based on the analysis of velocity structure of near surface in a desert area, we study the transmittable laws of seismic waves in linear transition layers and compare simulated data with practical seismic records. The results show that the velocity gradient layer zone is an important factor for seismic wave attenuation in unconsolidated sediment in the desert area. |
| |
| Keywords: | unconsolidated sediment seismic wave transmittable laws attenuation |
| 本文献已被 维普 万方数据 等数据库收录！ |
| 点击此处可从《地球物理学进展》浏览原始摘要信息 |
| 点击此处可从《地球物理学进展》下载免费的PDF全文 |
|
