Statistical characteristics of seismo-ionospheric GPS TEC disturbances prior to global Mw >= 5.0 earthquakes (1998-2014)
文献类型：期刊论文
| 作者 | Shah, Munawar1,3; Jin, Shuanggen1,2
|
| 刊名 | JOURNAL OF GEODYNAMICS
 |
| 出版日期 | 2015-12-01 |
| 卷号 | 92期号:1页码:42-49 |
| 关键词 | Seismo-ionospheric disturbance Precursor GPS TEC Earthquake |
| 英文摘要 | Pre-earthquake ionospheric anomalies are still challenging and unclear to obtain and understand, particularly for different earthquake magnitudes and focal depths as well as types of fault. In this paper, the seismo-ionospheric disturbances (SID) related to global earthquakes with 1492 Mw >= 5.0 from 1998 to 2014 are investigated using the total electron content (TEC) of GPS global ionosphere maps (GIM). Statistical analysis of 10-day TEC data before global Mw >= 5.0 earthquakes shows significant enhancement 5 days before an earthquake of Mw >= 6.0 at a 95% confidence level. Earthquakes with a focal depth of less than 60 km and Mw >= 6.0 are presumably the root of deviation in the ionospheric TEC because earthquake breeding zones have gigantic quantities of energy at shallower focal depths. Increased anomalous TEC is recorded in cumulative percentages beyond Mw-5.5. Sharpness in cumulative percentages is evident in seismo-ionospheric disturbance prior to Mw >= 6.0 earthquakes. Seismo-ionospheric disturbances related to strike slip and thrust earthquakes are noticeable for magnitude Mw6.0-7.0 earthquakes. The relative values reveal high ratios (up to 2) and low ratios (up to -0.5) within 5 days prior to global earthquakes for positive and negative anomalies. The anomalous patterns in TEC related to earthquakes are possibly due to the coupling of high amounts of energy from earthquake breeding zones of higher magnitude and shallower focal depth. (C) 2015 Elsevier Ltd,. All rights reserved. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Geochemistry & Geophysics |
| 研究领域[WOS] | Geochemistry & Geophysics |
| 关键词[WOS] | TOTAL ELECTRON-CONTENT ; WENCHUAN EARTHQUAKE ; PRECURSORS ; SIGNALS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000369679600003 |
| 源URL | [http://119.78.226.72/handle/331011/28544]  |
| 专题 | 上海天文台_天文地球动力学研究中心 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 2.Bulent Ecevit Univ, Dept Geomat Engn, TR-67100 Zonguldak, Turkey 3.Univ Chinese Acad Sci, Beijing 100047, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shah, Munawar,Jin, Shuanggen. Statistical characteristics of seismo-ionospheric GPS TEC disturbances prior to global Mw >= 5.0 earthquakes (1998-2014)[J]. JOURNAL OF GEODYNAMICS,2015,92(1):42-49. |
| APA | Shah, Munawar,&Jin, Shuanggen.(2015).Statistical characteristics of seismo-ionospheric GPS TEC disturbances prior to global Mw >= 5.0 earthquakes (1998-2014).JOURNAL OF GEODYNAMICS,92(1),42-49. |
| MLA | Shah, Munawar,et al."Statistical characteristics of seismo-ionospheric GPS TEC disturbances prior to global Mw >= 5.0 earthquakes (1998-2014)".JOURNAL OF GEODYNAMICS 92.1(2015):42-49. |
入库方式： OAI收割
来源：上海天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。