Theoretical study on seismic interferometry and its application to shallow subsurface exploration

地震干涉测量理论研究及其在浅层地下勘探中的应用

• 批准号: 20740248
• 负责人: NAKAHARA Hisashi
• 金额: $ 1.83万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20740248/
• 关键词: 地震現象; 地震波干渉法; 相関; 多重散乱波; 時間変化; エネルギー分配; エンベロープ; アレイ; 3成分センブランス

Multiple scattering waves have been often considered to be "noise" in seismology, and have been filtered out in the analysis of seismograms. However, benefit of multiple scattering waves for clarifying small-scale heterogeneities in the Earth is reappraised after the recent advent of seismic interferometry. In this study, we have been able to understand seismic interferometry in deeper depth. Based on our new findings, we have developed a method for exploring shallow subsurface velocity structures, and applied the method to real data successfully. Through these studies, we have been able to improve the applicability and usefulness of seismic interferometry and multiple scattering waves.

在地震学中，多次散射波通常被认为是“噪声”，在地震记录分析中已被滤除。然而，在最近地震干涉测量的出现之后，多次散射波在澄清地球上小尺度非均质性方面的益处被重新评估。在这项研究中，我们已经能够更深入地了解地震干涉测量。基于我们的新发现，我们发展了一种探测浅层地下速度结构的方法，并成功地将该方法应用于实际资料。通过这些研究，我们能够提高地震干涉测量和多次散射波的适用性和有用性。

项目成果

Sudden drop of seismic velocity after the 2004 Mw 6.6 mid-Niigata earthquake, Japan, observed with Passive Image Interferometry

• DOI: 10.1029/2008jb005869
• 发表时间: 2009-06
• 期刊: Journal of Geophysical Research
• 作者: U. Wegler;H. Nakahara;C. Sens‐Schönfelder;M. Korn;K. Shiomi

Maximum-Likelihood Method for Estimating Coda Q and the Nakagami-m Parameter

• DOI: 10.1785/0120100030
• 发表时间: 2010-12
• 期刊: Bulletin of the Seismological Society of America
• 影响因子: 3
• 作者: H. Nakahara;E. Carcolé

Time-lapse changes of seismic velocity in the shallow ground caused by strong ground motion shock of the 2000 Western-Tottori Earthquake, Japan, as revealed from coda deconvolution analysis

尾波反褶积分析揭示2000年日本鸟取县西部地震强地震动引起的浅层地震速度时移变化

• 发表时间: 2009
• 期刊: Bull. Seismol. Soc. Am 99
• 作者: Sawazaki;K.;H. Sato;H. Nakahara;and T. Nishimura
• 通讯作者: and T. Nishimura

Testing equipartition for S-wave coda using borehole records of local earthquakes

使用当地地震的钻孔记录测试 S 波尾波的均分

• 发表时间: 2011
• 期刊: Accepted by Bull.Seismol.Soc.Am.
• 作者: Nakahara;H.;L.Margerin
• 通讯作者: L.Margerin

Semblance for three-component data of small seismic arrays

小型地震台阵三分量数据的相似性

• 发表时间: 2009
• 作者: Nakahara;H.
• 通讯作者: H.