{"title":"The South American lightning puzzle and the South Atlantic Anomaly","authors":"O. Pechony, A. Nickolaenko","doi":"10.1541/JAE.30.75","DOIUrl":"https://doi.org/10.1541/JAE.30.75","url":null,"abstract":"","PeriodicalId":274637,"journal":{"name":"Journal of atmospheric electricity","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128872544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Correlation between the aerological atmospheric refractivity and the received level of non-line-of-sight FM radio waves","authors":"Teruaki Yoshida, K. Shin, M. Nishi","doi":"10.1541/JAE.30.83","DOIUrl":"https://doi.org/10.1541/JAE.30.83","url":null,"abstract":"","PeriodicalId":274637,"journal":{"name":"Journal of atmospheric electricity","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123308792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Study of GPS-TEC related to Wenchuan earthquake (M=7.9) of 12 May 2008 and their fractal analysis","authors":"V. Chauhan, R. Singh, O. P. Singh, Birbal Singh","doi":"10.1541/JAE.30.63","DOIUrl":"https://doi.org/10.1541/JAE.30.63","url":null,"abstract":"","PeriodicalId":274637,"journal":{"name":"Journal of atmospheric electricity","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123072282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
K. Yamashita, K. Yamashita, T. Otsuyama, Y. Hobara, Y. Hobara, M. Sekiguchi, Y. Matsudo, M. Hayakawa, V. Korepanov
{"title":"Global distribution and characteristics of intense lightning discharges as deduced from ELF transients observed at Moshiri (Japan)","authors":"K. Yamashita, K. Yamashita, T. Otsuyama, Y. Hobara, Y. Hobara, M. Sekiguchi, Y. Matsudo, M. Hayakawa, V. Korepanov","doi":"10.1541/JAE.29.71","DOIUrl":"https://doi.org/10.1541/JAE.29.71","url":null,"abstract":"The ELF data during one year (July 15 – September 27, 2004 and October 1, 2005 to June 30) at a single station of Moshiri (Japan) are used to investigate the global distribution and characteristics of intense lightning discharges. The statistics of those ELF transients whose locations are sufficiently accurately determined, has yielded the following; (1) Enhanced activity is found in Asia (for both polarities), and small charge moment change (Qds) events are dominant in Asia, (2) Large Qds (≥500C·km) is dominant in Africa and America, with Qds >1000C•km being predominant in Africa. (3) Continents are rich in +CGs, while –CGs are dominant in the maritime Asia, and (4) The UT (universal time) dependence of occurrence rate of intense ELF transients is found to be completely in opposite phase to that of conventional worldwide thunderstorm activity, being concentrated in the UT interval from 20 h to 5 h.","PeriodicalId":274637,"journal":{"name":"Journal of atmospheric electricity","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127901500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Fractal ULF signatures related to seismic processes","authors":"A. Mezentsev, M. Hayakawa, K. Hattori","doi":"10.1541/JAE.29.81","DOIUrl":"https://doi.org/10.1541/JAE.29.81","url":null,"abstract":"In order to detect seismo-related patterns that manifest themselves in fractal properties of ULF magnetic field variations, the fractal and multifractal analyses of the ULF data obtained from several stations were performed. As a result, two different behaviors of fractal parameters of the ULF magnetic field variations were detected. The first one has the certain co-seismic character and manifests itself in significant increase in fractal dimension synchronous with the rise of seismic activity. Another pattern can be interpreted as a manifestation of the seismic preparation processes, which is characterized by the significant gradual decrease in fractal dimension during the extended time period of several months. Also a new procedure of the local geomagnetic activity (LGA) level estimation was proposed. A correlation between the geomagnetic activity and the fractal dimension, and, consequently, the necessity of taking into a consideration the LGA level was demonstrated.","PeriodicalId":274637,"journal":{"name":"Journal of atmospheric electricity","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116927285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Precursors of earthquakes in the line-of-sight propagation on VHF band","authors":"K. Motojima","doi":"10.1541/JAE.29.95","DOIUrl":"https://doi.org/10.1541/JAE.29.95","url":null,"abstract":"This paper was intended to find out any relation between anomalous line-of-sight propagations on VHF band and occurrences of earthquakes near the VHF propagation path. The TV broadcasting waves on the VHF band were measured continuously for 504 days, in which we assembled an automatic measurement system. The waves propagated on the line-of-sight from Tokyo Tower to Gunma Univ. in Kiryu were measured on VHF band. In order to distinguish anomalous propagation data from normal data, a statistical process is adopted in such a way that six times deviation from the mean value was adopted as a criterion for distinguishing between the anomalous or normal propagation data. In a time interval between the appearance of anomalous propagation and the occurrence of earthquake was shorter than 48 hours (2 days), the anomalous propagation was additionally recognized as being associated with the earthquake. During the observation period of 504 days, only four anomalous propagations happened and we observed three earthquakes associated with these anomalous propagations. As a result, it is found that anomalous line-of-sight propagations on VHF band might be associated with the earthquakes near the VHF propagation path.","PeriodicalId":274637,"journal":{"name":"Journal of atmospheric electricity","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133538557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"On a forgotten model of lightning stroke","authors":"A. Nickolaenko","doi":"10.1541/JAE.29.63","DOIUrl":"https://doi.org/10.1541/JAE.29.63","url":null,"abstract":"In the present paper a model is described of the lightning discharge that was developed in the USSR by Stekolnikov in 1940s. This model is practically unknown to specialists in the atmoshperic electricity. We describe its parameters and compare these with the data commonly used in the literature. Computations show that SM remains up to date and is consistent with the modern concepts.","PeriodicalId":274637,"journal":{"name":"Journal of atmospheric electricity","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128265269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Analytical derivation of composite mobility peaks for multiple atmospheric ions in equilibrium : Verification of Mohnen's prediction","authors":"K. Iinuma, N. Sasaki","doi":"10.1541/jae.28.51","DOIUrl":"https://doi.org/10.1541/jae.28.51","url":null,"abstract":"The concept of composite mobility peaks of multiple ion families in the atmosphere predicted by Mohnen (1977) has been theoretically verified using a general solution and a dynamic equilibrium solution of the coupled diffusion-reaction equations of an arbitrary number of ionic species. Both the general solution and the dynamic equilibrium solution have been derived by us for the sake of experimental analysis of mobility peaks to determine the transport coefficients (mobility and diffusion coefficient) and the reaction rates of multiple ions in the atmosphere. These solutions have revealed that the dynamic equilibrium is the final stage of gas-phase ion swarm phenomena where the transport and reaction of all the ions reach the complete balance, and all the ions consisting one ion family will aggregate only one mobility peak (Mohnen's prediction). We examine the reactive transport experiments of hydrated oxonium (hydronium) ion family performed by Mohnen and his colleagues, and test the commonly known mutual reaction rates from the equilibrium concentration ratio of H30+(H20)2, H30+(H20)3, and H30+(H20)4 observed by their mass spectrometer. Also, their hydronium-ammonium ion family in the atmosphere are theoretically examined by simplified 10-ions model using real transport and reaction parameters, and we calculate that only three ionic species of NH/H20, NH/NH3H20, and NH/NH3(H20)2 remain at final stage in this model.","PeriodicalId":274637,"journal":{"name":"Journal of atmospheric electricity","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115559510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
D. Matsui, A. Hazmi, Teiji Watanabe, N. Takagi, Daohong Wang
{"title":"Discharge characteristics obtained with an impulse voltage simulating the lightning stepped leader","authors":"D. Matsui, A. Hazmi, Teiji Watanabe, N. Takagi, Daohong Wang","doi":"10.1541/jae.28.63","DOIUrl":"https://doi.org/10.1541/jae.28.63","url":null,"abstract":". We have developed a system for generating an impulse voltage that can simulate the electric field induced by lightning stepped leaders. Using such impulse voltage, we have performed a series of discharge experiments at different voltages and with various curvature radii of needle e1ectrodes. We obtained fo11owing resu1ts; (1) The breakdown vo1tage at the new type of vo1tage is lower than that for standard lightning impulse voltage (1.2/50 µs), (2) Standard deviation of time-Jag of spark at the new type of voltage is higher than that for the standard lightning impulse voltage.","PeriodicalId":274637,"journal":{"name":"Journal of atmospheric electricity","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127153752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A discussion of traveling waves involved in the lightning return stroke process","authors":"Daohong Wang, V. Rakov, N. Takagi, T. Watanabe","doi":"10.1541/jae.28.71","DOIUrl":"https://doi.org/10.1541/jae.28.71","url":null,"abstract":"In this paper, we have presented the measured common features of return stroke optical traveling waves and offered some hypothetical interpretations. We suggest that a return stroke may be a cumulative effect of many waves. Of these waves, a kind of \"precursor\" wave induced by the electric field change of the return stroke may exist. This wave forms the return stroke tip. The tip is followed by the main disturbance wave which forms the initial sharp rise of the return stroke waveform. Both these \"precursor\" and main-disturbance waves propagate upward. The main disturbance wave is followed by waves that.are produced in neutralizing the space charge in the leader corona sheath and in the thundercloud. These waves propagate to the return stroke channel core and then downward to the ground. As a cumulative effect of these waves, the decaying part of the return stroke waveform is formed. The return stroke tip may attempt to travel at the speed of light, but in reality the tip speed should be smaller than the speed of light. In order to perform a direct measurement of return stroke speed using high-speed imaging systems, some kind of subjective judgment in identifying the starting points of return stroke waves at various heights is unavoidable. The resultant speed could only be an apparent and approximate speed depending on instrument sensitivity and many other factors.","PeriodicalId":274637,"journal":{"name":"Journal of atmospheric electricity","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123341785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}