| 2015年尼泊尔Mw 7.8地震前OLR和电离层异常分析 |
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| 引用本文： | 周强波,汤俊.2015年尼泊尔Mw 7.8地震前OLR和电离层异常分析[J].测绘科学技术学报,2016(5):458-463. |
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| 作者姓名： | 周强波 汤俊 |
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| 作者单位： | 1. 核工业二三○研究所,湖南 长沙,410007;2. 华东交通大学 土木建筑学院,江西 南昌,330013 |
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| 基金项目： | 国家自然科学基金项目(41504025)，江西省自然科学基金项目(20161BAB213087)，华东交通大学校立科研基金项目(14RJ04) |
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| 摘 要： | 针对2015-04-25尼泊尔Mw 7.8地震,利用NOAA卫星遥感射出长波辐射(OLR)数据和IGS(International GNSS Service)提供的全球IONEX总电子含量(TEC)数据,并考虑太阳和地磁活动水平的条件下,分别对OLR数据采用标准差阈值法和对电离层TEC数据采用四分位距法进行了异常探测。结果显示,2015-04-22在震中附近地区卫星遥感OLR出现异常增强现象;同时,2015-04-23在震中附近电离层TEC出现显著正异常现象,而且出现磁共轭现象。
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| 关 键 词： | 尼泊尔地震 射出长波辐射 电离层 总电子含量 异常 |
Analysis of Anomalies of Pre-Earthquake Based on OLR and Ionosphere Data of 2015 Mw 7.8 Earthquake in Nepal |
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| ZHOU Qiangbo,TANG Jun.Analysis of Anomalies of Pre-Earthquake Based on OLR and Ionosphere Data of 2015 Mw 7.8 Earthquake in Nepal[J].Journal of Zhengzhou Institute of Surveying and Mapping,2016(5):458-463. |
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| Authors: | ZHOU Qiangbo TANG Jun |
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| Abstract: | The Nepal Mw 7.8 earthquake that occurred on April 252015 is investigated by using outgoing longwave radiation data from NOAA and global IONEX total electron content from IGS. Considering the level of sun and geo-magnetic activity conditions, the standard deviation threshold method is used to detect the OLR data anomalies, and inter quartile range method is used to detect the ionosphere TEC anomalies, respectively. The results show that outgoing longwave radiation of satellite remote sensing appears anomaly enhancement phenomenon on April 22 in areas near the epicenter. At the same time, the ionosphere TEC appears significant positive anomaly phenomenon on April 23 near the epicenter, and even occurs in the areas of magnetic conjugate. |
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| Keywords: | Nepal earthquake OLR( Outgoing Longwave Radiation) ionosphere TEC( Total Electron Content) anomaly |
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