ATMOSPHERICS

作品数：9被引量：28H指数：4
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Automatic recognition of tweek atmospherics and plasma diagnostics in the lower ionosphere with the machine learning method
《Earth and Planetary Physics》2023年第3期407-413,共7页Mao Zhang GaoPeng Lu HaiLiang Huang ZhengWei Cheng YaZhou Chen Steven A.Cummer JiaYi Zheng JiuHou Lei 
supported by the Chinese Academy of Sciences(CAS)Project of Stable Support for Youth Team in Basic Research Field(Grant No.YSRR-018);the National Key R&D Program of China(Grant No.2019YFC1510103);the National Natural Science Foundation of China(Grant Nos.41875006 and U1938115);the Chinese Meridian Project,and the International Partnership Program of CAS(Grant No.183311KYSB20200003).
Tweek atmospherics are extremely low frequency and very low frequency pulse signals with frequency dispersion characteristics that originate from lightning discharges and that propagate in the Earth–ionosphere wavegu...
关键词：machine learning method tweek atmospherics reflection height D-region ionosphere 
Mountain Atmospherics
《Natural Science》2021年第6期208-210,共3页Kern E. Kenyon 
The purpose of the work is to examine the effects of compressibility on air properties when a wind blows against a sloping mountain surface. Previous research of air compression effects include the low speed wing and ...
关键词：Mountain Winds Compressed Air Upward Decreases of Pressure and Density 
A detailed investigation of low latitude tweek atmospherics observed by the WHU ELF/VLF receiver:2.Occurrence features and associated ionospheric parameters被引量：9
《Earth and Planetary Physics》2020年第3期238-245,共8页Juan Yi XuDong Gu Wen Cheng XinYue Tang Long Chen BinBin Ni RuoXian Zhou ZhengYu Zhao Qi Wang LiQing Zhou 
supported by the National Natural Science Foundation of China (Grants Nos. 41674163, 41474141, 41204120,41304127, 41304130, and 41574160);the Projects funded by China Postdoctoral Science Foundation (Grants Nos. 2013M542051, 2014T70732);the Hubei Province Natural Science Excellent Youth Foundation (2016CFA044);The project Supported by the Specialized Research Fund for State Key Laboratories;the 985 funded project of School of Electronic information, Wuhan University。
As a companion paper to Zhou RX et al.(2020),this study describes application of the automatic detection and analysis module to identify all the tweek atmospherics detectible in the WHU ELF/VLF receiver data collected...
关键词：ionospheric D-region electron density tweek atmospherics 
A detailed investigation of low latitude tweek atmospherics observed by the WHU ELF/VLF receiver:Ⅰ. Automatic detection and analysis method被引量：13
《Earth and Planetary Physics》2020年第2期120-130,共11页RuoXian Zhou XuDong Gu KeXin Yang GuangSheng Li BinBin Ni Juan Yi Long Chen FuTai Zhao ZhengYu Zhao Qi Wang LiQing Zhou 
supported by the National Natural Science Foundation of China (Grants Nos. 41674163, 41474141, 41204120, 41304127, 41304130, and 41574160);the Projects funded by China Postdoctoral Science Foundation (Grants Nos. 2013M542051, 2014T70732);the Hubei Province Natural Science Excellent Youth Foundation (2016CFA044);the Project Supported by the Specialized Research Fund for State Key Laboratories;the 985 funded project of School of Electronic information, Wuhan University
As a dispersive wave mode produced by lightning strokes, tweek atmospherics provide important hints of lower ionospheric(i.e., D-region) electron density. Based on data accumulation from the WHU ELF/VLF receiver syste...
关键词：tweeks automatic detection WHU-VLF receiver 
Theoretical Model of the Tropospheric Pressure Variation on the Height
《Journal of Earth Science and Engineering》2017年第3期175-180,共6页Raul C. Perez 
In the study and the research of the troposphere, the knowledge about its pressure variation on the height is necessary and important. Of course, exist the sounding to make this work, but not always it is possible to ...
关键词：Atmospherics pressure tropospheric pressure. 
Variations of VLF radio signals and atmospherics during the deep earthquake with M = 8.2 occurred on 24 May 2013 near Kamchatka peninsula被引量：1
《Natural Science》2014年第3期144-149,共6页Viktor A. Mullayarov Gennady I. Druzhin Vyacheslav V. Argunov Larisa M. Abzaletdinova Aleksander N. Mel’nikov 
To detect seismic disturbances in the lower ionosphere, we have used the signals of very-lowfrequency radio transmitters and natural radio signals—electromagnetic emission of lightning discharges—atmospherics. On ea...
关键词：Earthquake PRECURSOR IONOSPHERE ATMOSPHERICS Radio Signals 
Analysis of saturation signal correction of the troposphere lidar被引量：6
《Chinese Optics Letters》2009年第11期1051-1054,共4页刘智深 李志刚 刘秉义 李荣忠 
supported bythe National Natural Science Foundation of China under Grant Nos.60578038 and 40427001
Usually, lidar detection systems are optimized for the measurement of the low intensity signal using the photon counting technique, but this approach results in the nonlinear signal response for the higher intensity s...
关键词：ATMOSPHERICS Optical radar Signal to noise ratio 
Improved free space optical communications performance by using time diversity被引量：2
《Chinese Optics Letters》2008年第11期797-799,共3页陈晶 艾勇 谭莹 
supported by the National Natural Science Foundation of China under Grant No.10477014.
A laser beam propagating through turbulence experiences random amplitude and phase fluctuations, which can severely degrade the performance of free space optical communication systems. It this letter, time diversity i...
关键词：Atmospheric turbulence ATMOSPHERICS Communication systems Optical links PHOTONICS TURBULENCE 
Seasonal variability of cloud optical depth over northwestern China derived from CERES/MODIS satellite measurements被引量：6
《Chinese Optics Letters》2008年第6期454-457,共4页陈勇航 白鸿涛 黄建平 张华 葛觐铭 管晓丹 毛晓琴 
the National Natural Science Foundation of China(No.40633017 and 40575036);the National"973"Program of China(No.2006CB403700)The data were obtained from the NASA Langley Research Center Atmospheric Sciences Data Center.We appreciate Dr.Yuhong Yi for helping us with data and Mr.Jim Miller for smoothing the English;Funding for the processing of the northwestern China data was provided by the Special Professional Outlay for Scientific Research for Commonweal(No.GYHY(QX)2007);the Shanghai Leading Academic Discipline Project(No.B604)
The seasonal variability of cloud optical depth over northwestern China derived from Clouds and the Earth＇s Radiant Energy System （CERES） Single Scanner Footprint （SSF） Aqua Moderate Resolution Imaging Spectrorad...
关键词：ATMOSPHERICS CLIMATOLOGY Computer networks SATELLITES 
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