智利8.8级地震前后高能粒子数据变化分析

英文篇名：ANALYSIS TO THE ENERGETIC PARTICLES AROUND THE M8.8 CHILI EARTHQUAKE
中文刊名：地震地质
英文刊名：Seismology and Geology
作者：黄建平 ; 刘静 ; 欧阳新艳 ; 李文静
英文作者：HUANG Jian-ping1) LIU Jing1) OUYANG Xin-yan1) LI Wen-jing2) 1) Institute of Earthquake Science ; China Earthquake Administration ; Beijing 100036 ; China 2) Tangshan Deformation Station of the First Crust Monitoring Center ; China Earthquake Administration ; Tangshan 063001 ; China
中文关键词：智利地震 ; DEMETER ; IDP通量 ; 高能粒子 ; 重访轨道
英文关键词：Chili earthquake ; DEMETER ; IDP flux ; energetic particles ; repeated orbits
出版日期：2010-09-15
机构：中国地震局地震预测研究所;中国地震局第一地形变监测中心唐山台;
年：2010
期：03
出版单位：地震地质

摘要

利用法国DEMETER卫星IDP载荷观测的高能粒子通量数据,首先研究了其全球表现特征,即极区沉降带、中高纬沉降带和南大西洋沉降区。进而以2010年2月27日发生的智利8.8级地震为例,通过重访轨道的对比,发现高能粒子通量在2月26日出现了比较显著的变化:即南纬L=2.1～2.7一直增强,而其共轭区,即北纬L=2.1～2.7时,在26日白天无显著变化,只是在接近地震发生时才出现共轭效应。同时,在26日白天震中上空靠近赤道地区粒子通量显著降低,而到夜晚在震中区上空及附近地区粒子通量显著增强。在震后粒子通量恢复正常水平。
Based on the IDP data from French DEMETER satellite,the global distribution is shown,which corresponds to three precipitation zones:auroral precipitation zone,mid-high latitude precipitation zone and South Antarctic precipitation zone.Then the Chili earthquake with M 8.8 on February 27,2010 is taken as an example.The IDP fluxes from repeated orbits are compared and the results show that there is a clear enhancement on February 26,just one day ahead of the Chili earthquake.In the south zone with L = 2.1 ～ 2.7,the flux on February 26 is higher than that on other days before.While in the north zone with L = 2.1 ～ 2.7,there is no clear change in the day time but a great enhancement during the night,which is close to the earthquake occurrence time.At the same time,the flux on February 26 over the epicenter is far lower than that on other days before during the day time while it reaches the peak at night.

引文

丁鉴海,于素荣,王亚丽.2008.地磁“低点位移”现象与强震预测研究[J].电波科学学报,23(6):1011—1017.DING Jian-hai,YU Su-rong,WANG Ya-li.2008.Geomagnetic low-point displacement phenomena and strong earthquake prediction research[J].Chinese Journal of Radio Science,23(6):1011—1017(in Chinese).
    郝建国,张云福著.2001.地震静电预测学[M].北京:石油大学出版社.HAO Jian-guo,ZHANG Yun-fu(ed).2001.Earthquake Static Electricity for the Prediction[M].China University of Petroleum Press,Beijing(in Chinese).
    张学民,李美,关华平.2009.汶川8.0级地震前的地电阻率异常分析[J].地震,29(1):108—115.ZHANG Xue-min,LI Mei,GUAN Huan-ping.2009.Anomaly analysis of earth resistivity observations before the Wen-chuan Earthquake[J].Earthquake,29(1):108—115(in Chinese).
    Baumjohann W,Treumann R A.1997.Basic Space Plasma Physics[M].Imperial College Press.
    Pulinets S A,Boyarchuk K A,Khegai V V,et al.2000.Quasielectrostatic model of atmosphere-thermosphere-ionosphere coupling[J].Adv Space Res,26:1209—1218.
    Pulinets S A,Boyarchuk K A.2004.Ionospheric Precursors of Earthquakes[M].Springer,Berlin Heidelberg New York.
    Sauvaud J A,Moreau T,Maggiolo R,et al.2006.High-energy electron detection onboard Demeter:The IDP spectrome-ter,description and first results on the inner belt[J].Planetary and Space Science,54:502—511.
    Treumann R A,Baumjohann W.1997.Advanced Space Plasma Physics[M].Imperial College Press.