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Physics and Chemistry of the Earth, Part C: Solar, Terrestrial & Planetary Science最新文献

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Wave mode identification via wave distribution function analysis 通过波分布函数分析识别波型
Physics and Chemistry of the Earth, Part C: Solar, Terrestrial & Planetary Science Pub Date : 2001-01-01 DOI: 10.1016/S1464-1917(00)00113-6
T. Oscarsson , G. Stenberg , O. Santolík
{"title":"Wave mode identification via wave distribution function analysis","authors":"T. Oscarsson ,&nbsp;G. Stenberg ,&nbsp;O. Santolík","doi":"10.1016/S1464-1917(00)00113-6","DOIUrl":"10.1016/S1464-1917(00)00113-6","url":null,"abstract":"<div><p>Satellite observations of plasma waves are often analyzed within linear theory of an infinite, homogeneous and magnetized plasma. Important aspects of wave propagation, such as dispersion and polarization, can then be analyzed. However, even for this simplified plasma model, the structure of the eigenmodes is sometimes complex. For instance, several wave modes with different polarization may be allowed at the same frequency. One way of distinguishing between wave modes in real data is by using the polarization information contained in observed frequency spectra to reconstruct the energy density in wave vector space, also called the wave distribution function (WDF). The purpose of this presentation is to show how WDF analysis can be used for identifying wave modes in a case with two overlapping wave modes, and to compare the results obtained with two independently developed methods for reconstructing the WDF. For this purpose Freja observations of waves around the local proton gyrofrequency are analyzed.</p></div>","PeriodicalId":101026,"journal":{"name":"Physics and Chemistry of the Earth, Part C: Solar, Terrestrial & Planetary Science","volume":"26 1","pages":"Pages 229-235"},"PeriodicalIF":0.0,"publicationDate":"2001-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1464-1917(00)00113-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75610360","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}
引用次数: 11
The global distribution of lightning NOx simulated on-line in a general circulation model 大气环流模型在线模拟闪电NOx的全球分布
Physics and Chemistry of the Earth, Part C: Solar, Terrestrial & Planetary Science Pub Date : 2001-01-01 DOI: 10.1016/S1464-1917(01)00051-4
L. Jourdain , D.A. Hauglustaine
{"title":"The global distribution of lightning NOx simulated on-line in a general circulation model","authors":"L. Jourdain ,&nbsp;D.A. Hauglustaine","doi":"10.1016/S1464-1917(01)00051-4","DOIUrl":"https://doi.org/10.1016/S1464-1917(01)00051-4","url":null,"abstract":"","PeriodicalId":101026,"journal":{"name":"Physics and Chemistry of the Earth, Part C: Solar, Terrestrial & Planetary Science","volume":"26 8","pages":"585-591"},"PeriodicalIF":0.0,"publicationDate":"2001-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1464-1917(01)00051-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72217828","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}
引用次数: 52
A dynamically configurable system for operational processing of space weather data 一种用于空间天气数据操作处理的动态配置系统
Physics and Chemistry of the Earth, Part C: Solar, Terrestrial & Planetary Science Pub Date : 2001-01-01 DOI: 10.1016/S1464-1917(01)00054-X
A. Wehrenpfennig , N. Jakowski , J. Wickert
{"title":"A dynamically configurable system for operational processing of space weather data","authors":"A. Wehrenpfennig ,&nbsp;N. Jakowski ,&nbsp;J. Wickert","doi":"10.1016/S1464-1917(01)00054-X","DOIUrl":"https://doi.org/10.1016/S1464-1917(01)00054-X","url":null,"abstract":"","PeriodicalId":101026,"journal":{"name":"Physics and Chemistry of the Earth, Part C: Solar, Terrestrial & Planetary Science","volume":"26 8","pages":"601-604"},"PeriodicalIF":0.0,"publicationDate":"2001-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1464-1917(01)00054-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72217832","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}
引用次数: 40
Origin and development of vertical propagating oscillations with periods of planetary waves in the ionospheric F region 电离层F区行星波周期垂直传播振荡的起源和发展
Physics and Chemistry of the Earth, Part C: Solar, Terrestrial & Planetary Science Pub Date : 2001-01-01 DOI: 10.1016/S1464-1917(01)00019-8
D. Altadill , E.M. Apostolov , J.G. Solé , Ch. Jacobi
{"title":"Origin and development of vertical propagating oscillations with periods of planetary waves in the ionospheric F region","authors":"D. Altadill ,&nbsp;E.M. Apostolov ,&nbsp;J.G. Solé ,&nbsp;Ch. Jacobi","doi":"10.1016/S1464-1917(01)00019-8","DOIUrl":"https://doi.org/10.1016/S1464-1917(01)00019-8","url":null,"abstract":"","PeriodicalId":101026,"journal":{"name":"Physics and Chemistry of the Earth, Part C: Solar, Terrestrial & Planetary Science","volume":"26 6","pages":"387-393"},"PeriodicalIF":0.0,"publicationDate":"2001-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1464-1917(01)00019-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72243040","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}
引用次数: 40
The Mu radar study of nonlinear advective accelerations in the lower and middle atmosphere 中低层大气非线性平流加速度的Mu雷达研究
Physics and Chemistry of the Earth, Part C: Solar, Terrestrial & Planetary Science Pub Date : 2001-01-01 DOI: 10.1016/S1464-1917(01)00025-3
N.M. Gavrilov , S. Fukao , H. Hashiguchi
{"title":"The Mu radar study of nonlinear advective accelerations in the lower and middle atmosphere","authors":"N.M. Gavrilov ,&nbsp;S. Fukao ,&nbsp;H. Hashiguchi","doi":"10.1016/S1464-1917(01)00025-3","DOIUrl":"https://doi.org/10.1016/S1464-1917(01)00025-3","url":null,"abstract":"","PeriodicalId":101026,"journal":{"name":"Physics and Chemistry of the Earth, Part C: Solar, Terrestrial & Planetary Science","volume":"26 6","pages":"429-432"},"PeriodicalIF":0.0,"publicationDate":"2001-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1464-1917(01)00025-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72243044","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}
引用次数: 1
Photodissociation of nitric oxide in the middle and upper atmosphere 中高层大气中一氧化氮的光解作用
Physics and Chemistry of the Earth, Part C: Solar, Terrestrial & Planetary Science Pub Date : 2001-01-01 DOI: 10.1016/S1464-1917(01)00043-5
K. Minschwaner, V. Starke
{"title":"Photodissociation of nitric oxide in the middle and upper atmosphere","authors":"K. Minschwaner,&nbsp;V. Starke","doi":"10.1016/S1464-1917(01)00043-5","DOIUrl":"10.1016/S1464-1917(01)00043-5","url":null,"abstract":"<div><p>Absorption of solar radiation of wavelengths between 175 to 205 nm plays a fundamental role in the photochemistry of the middle atmosphere. Nitric oxide photodissociates in the δ(0-0) and δ(1-0) bands near 191 and 183 nm, respectively, initiating the primary mechanisms for NO<sub>x</sub> removal in the middle atmosphere. The spectrally rich Schumann-Runge (S-R) bands of O<sub>2</sub> are the main source of atmospheric opacity at these wavelengths. A re-evaluation of O<sub>2</sub> absorption has been made based on recent advances in understanding of S-R line shapes, leading to differences with conventional approaches assuming Voigt line profiles in line-by-line calculations of the O<sub>2</sub> cross section. The new results are used to examine the impact of O<sub>2</sub> transmission on the photodissociation of NO in the δ(0,0) and δ(1,0) bands.</p></div>","PeriodicalId":101026,"journal":{"name":"Physics and Chemistry of the Earth, Part C: Solar, Terrestrial & Planetary Science","volume":"26 7","pages":"Pages 539-543"},"PeriodicalIF":0.0,"publicationDate":"2001-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1464-1917(01)00043-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77291377","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}
引用次数: 1
A method for processing ionograms based on correlation technique 一种基于相关技术的离子图处理方法
Physics and Chemistry of the Earth, Part C: Solar, Terrestrial & Planetary Science Pub Date : 2001-01-01 DOI: 10.1016/S1464-1917(01)00015-0
C. Scotto
{"title":"A method for processing ionograms based on correlation technique","authors":"C. Scotto","doi":"10.1016/S1464-1917(01)00015-0","DOIUrl":"10.1016/S1464-1917(01)00015-0","url":null,"abstract":"<div><p>The application of correlation technique for automatic scaling of ionograms is presented. A method of automatic scaling of critical frequency f<sub>0</sub>F2 and MUF(3000) is shown. The ionograms are considered as digital images and the detection process of the traces is performed without using information on polarization. For this reason the method can be applied to ionogram recorded by single antenna systems.</p></div>","PeriodicalId":101026,"journal":{"name":"Physics and Chemistry of the Earth, Part C: Solar, Terrestrial & Planetary Science","volume":"26 5","pages":"Pages 367-371"},"PeriodicalIF":0.0,"publicationDate":"2001-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1464-1917(01)00015-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85497950","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}
引用次数: 4
Fine-scale optical observations of Aurora 极光的精细光学观测
Physics and Chemistry of the Earth, Part C: Solar, Terrestrial & Planetary Science Pub Date : 2001-01-01 DOI: 10.1016/S1464-1917(00)00105-7
T.S. Trondsen, L.L. Cogger
{"title":"Fine-scale optical observations of Aurora","authors":"T.S. Trondsen,&nbsp;L.L. Cogger","doi":"10.1016/S1464-1917(00)00105-7","DOIUrl":"10.1016/S1464-1917(00)00105-7","url":null,"abstract":"<div><p>High spatial and temporal resolution observations of auroral forms made by the University of Calgary Portable Auroral Imager are reviewed. Observations include auroral forms with apparent widths of on the order of tens to hundreds of meters and lifetimes of less than a second to several tens of seconds. Included here is a class of multiple auroral arc systems exhibiting a strikingly asymmetric internal topology. It is shown that such systems of multiple linear arcs may be explained by mode conversion of field-line resonance shear Alfvén waves to inertial Alfvén waves. A survey of small-scale, short-lived auroral vortices (curls) occurring on thin auroral forms within the active aurora has also been performed, with some results being reviewed here. The Kelvin-Helmholtz instability as a responsible mechanism is discussed in light of the observationally acquired statistical data. Observations of small-scale “black” auroral arcs and vortices are briefly reviewed as well.</p></div>","PeriodicalId":101026,"journal":{"name":"Physics and Chemistry of the Earth, Part C: Solar, Terrestrial & Planetary Science","volume":"26 1","pages":"Pages 179-188"},"PeriodicalIF":0.0,"publicationDate":"2001-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1464-1917(00)00105-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77165126","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}
引用次数: 14
Instantaneous mapping of ionospheric characteristics using 5-minute measurements for the day of the total solar eclipse of 11 August 1999 利用1999年8月11日日全食当天的5分钟测量资料即时绘制电离层特征图
Physics and Chemistry of the Earth, Part C: Solar, Terrestrial & Planetary Science Pub Date : 2001-01-01 DOI: 10.1016/S1464-1917(01)00009-5
I. Stanisławska , T.L. Gulyaeva , D. Altadil , P. Bencze , G. Juchnikowski , Yu.N. Korenkov , G. Sole , Z. Zbyszyński
{"title":"Instantaneous mapping of ionospheric characteristics using 5-minute measurements for the day of the total solar eclipse of 11 August 1999","authors":"I. Stanisławska ,&nbsp;T.L. Gulyaeva ,&nbsp;D. Altadil ,&nbsp;P. Bencze ,&nbsp;G. Juchnikowski ,&nbsp;Yu.N. Korenkov ,&nbsp;G. Sole ,&nbsp;Z. Zbyszyński","doi":"10.1016/S1464-1917(01)00009-5","DOIUrl":"10.1016/S1464-1917(01)00009-5","url":null,"abstract":"<div><p>Instantaneous mapping methods for hourly observations were developed within the COST 251 European Action. The hourly maps of foF2 for eclipse day are available on the web page http://www.cbk.waw.pl/rwc/idce.html of the Ionospheric Despatch Centre in Europe. However, the eclipse effect on the ionosphere requires more frequent time scale for the observations than 1 hour. This paper presents the results of maps of foF2, foF1, foE with the use of 5-minute measurements during the eclipse of 11 August 1999. The instantaneous maps are shown be a useful tool to study the effect of the solar eclipse upon the ionosphere.</p></div>","PeriodicalId":101026,"journal":{"name":"Physics and Chemistry of the Earth, Part C: Solar, Terrestrial & Planetary Science","volume":"26 5","pages":"Pages 335-339"},"PeriodicalIF":0.0,"publicationDate":"2001-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1464-1917(01)00009-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89055434","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}
引用次数: 9
Linear and nonlinear dispersive effects on magnetospheric field line resonances 磁层场线共振的线性和非线性色散效应
Physics and Chemistry of the Earth, Part C: Solar, Terrestrial & Planetary Science Pub Date : 2001-01-01 DOI: 10.1016/S1464-1917(00)00098-2
R. Rankin , V.T. Tikhonchuk
{"title":"Linear and nonlinear dispersive effects on magnetospheric field line resonances","authors":"R. Rankin ,&nbsp;V.T. Tikhonchuk","doi":"10.1016/S1464-1917(00)00098-2","DOIUrl":"https://doi.org/10.1016/S1464-1917(00)00098-2","url":null,"abstract":"<div><p>Shear Alfvén wave dispersion produced by electron inertia, ion gyro-kinetic and electron thermal pressure is modeled using two-fluid MHD and kinetic theory. In a dipolar magnetosphere, dispersion and non-linearity determine the spatial structure, temporal evolution and amplitude of parallel electric fields and large amplitude density fluctuations near to the polar ionosphere. Deep auroral density cavities are found to have a strong influence on auroral electric field generation. Many features of satellite and ground based observations of discrete arcs are predicted using two-fluid MHD, but large parallel electric fields (mV/m) and keV electron precipitation cannot easily be explained. To explain the observed electric fields it is necessary to evaluate the non-local kinetic electron response to standing shear Alfvén waves on dipolar magnetic field lines. It is shown that electron trapping leads to a significant reduction of the collisionless electron conductivity and a large enhancement of parallel electric fields in the 1 – 4 mHz frequency range of observed field line resonances.</p></div>","PeriodicalId":101026,"journal":{"name":"Physics and Chemistry of the Earth, Part C: Solar, Terrestrial & Planetary Science","volume":"26 1","pages":"Pages 121-131"},"PeriodicalIF":0.0,"publicationDate":"2001-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1464-1917(00)00098-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91669471","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}
引用次数: 3
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