Particle bursts in the inner radiation belt related to global lightning activity  

作　　者：WU Fei HAO YongQiang ZHANG DongHe 

机构地区：[1]Institute of Space Physics and Applied Technology,Peking University [2]State Key Laboratory of Space Weather,Chinese Academy of Sciences

出　　处：《Science China(Technological Sciences)》2013年第11期2658-2667,共10页中国科学（技术科学英文版）

基　　金：supported by the National Basic Research Program of China("973" Project)(Grant Nos.2012CB957801,2011CB811405);the National Natural Science Foundation of China(Grant Nos.41274155,40904036);the Public Science and Technology Research Funds Projects of Ocean,State Oceanic Administration of China(Grant No.201005017);the Specialized Research Fund for State Key Laboratories

摘　　要：Particle bursts （PBs）, the phenomena characterized by short-term increases of particle counting rates （CRs）, were observed by space-borne radiation belt particle detectors. With the electron CR data obtained by National Oceanic and Atmospheric Ad- ministration （NOAA）-18 satellite, the occurrence of PBs in the inner belt （I〈~L〈2 and B〉20.5 gT） were derived for years 2006-2011. The monthly occurrence number of PBs exhibits a strong maximum in northern summer （May-August）. In associ- ation with global lightning data, the seasonal occurrence of PBs is found to be consistent with the lightning activity, especially if only lightning flashes at latitudes 〉20~ are taken into account. The positive correlation between PBs and mid-latitude light- ning discharges indicates the role of lightning-induced whistler waves, and is consistent with the expected pitch-angle scatter- ing by wave-particle interactions. The contribution of lightning is so significant that it forms a non-negligible seasonal back- ground of PBs. If one connects PBs to seismoelectromagnetic emissions （SEME） in attempt to find the earthquake precursor, the lightning background needs to be considered with great care.

关 键 词：particle burst （PB） wave-particle interaction lightning-induced VLF seismo-electromagnetic emissions （SEME） 

分 类 号：P427.32[天文地球—大气科学及气象学]