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Locating the source field lines of Jovian decametric radio emissions

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Earth and Planetary Physics 2020年第2期4卷 95-104页

作者： YuMing wang XianZhe Jia chuanbing wang Shui wang Vratislav Krupar Chinese Academy of Sciences Key Laboratory of Geospace Environment School of Earth and Space SciencesUniversity of Science and Technology of ChinaHefei 230026China Chinese Academy of Sciences Center for Excellence in Comparative Planetology University of Science and Technology of ChinaHefei 230026China Mengcheng National Geophysical Observatory School of Earth and Space SciencesUniversity of Science and Technology of ChinaHefei 230026China Department of Climate and Space Sciences and Engineering University of MichiganAnn ArborMI 48109-2143USA Universities Space Research Association ColumbiaMarylandUSA NASA Goddard Space Flight Center GreenbeltMarylandUSA Department of Space Physics Institute of Atmospheric PhysicsThe Czech Academy of SciencesPragueCzech Republic

Decametric(DAM) radio emissions are one of the main windows through which one can reveal and understand the Jovian magnetospheric dynamics and its interaction with the moons. DAMs are generated by energetic electrons through cyclotron-maser instability. For Io(the most active moon) related DAMs, the energetic electrons are sourced from Io volcanic activities, and quickly trapped by neighboring Jovian magnetic field. To properly interpret the physical processes behind DAMs, it is important to precisely locate the source field lines from which DAMs are emitted. Following the work by Hess et al.(2008, 2010), we develop a method to locate the source region as well as the associated field lines for any given DAM emission recorded in a radio dynamic spectrum by, e.g.,Wind/WAVES or STEREO/WAVES. The field lines are calculated by the state-of-art analytical model, called JRM09(Connerney et al., 2018).By using this method, we may also derive the emission cone angle and the energy of associated electrons. If multiple radio instruments at different perspectives observe the same DAM event, the evolution of its source region and associated field lines is able to be revealed. We apply the method to an Io-DAM event, and find that the method is valid and reliable. Some physical processes behind the DAM event are also discussed.

关键词： radio decametric emissions Jovian magnetosphere energetic electrons

Gyrosynchrotron Radiation of Interplanetary CMEs

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空间科学学报 2012年第1期32卷 1-7页

作者： SUN Weiying WU Ji wang chuanbing wang Shui Center for Space Science and Applied Research Chinese Academy of SciencesBeijing 100190 School of Earth and Space Sciences University of Science and Technology of ChinaHefei 230026

CMEs(Coronal Mass Ejections) are an important means of energy release in the solar *** Polar Orbit Radio Telescope(SPORT) is a mission being proposed for observing the propagation of interplanetary CMEs from solar polar *** main payload onboard SPORT is a synthetic aperture interferometric radiometer,which receives radio emission of interplanetary CMEs. It is identified that there are mainly three radio emission mechanisms of CMEs,i.e.,bremsstrahlung, gyrosynchrotron emission and plasma *** these emission types,bremsstrahlung emission is the main emission mechanism of the high-density plasma clouds of interplanetary *** emission is the continuous emission generated by high-energy electrons from CMEs, while plasma emission is the main mechanism of transient radio bursts from *** this paper,the gyrosynchrotron emission of interplanetary CMEs is focused ***,the mechanism of gyrosynchrotron emission is ***,a review of the physical parameter models of background solar wind and interplanetary CMEs is *** these,the brightness temperature and polarization of gyrosynchrotron emission of interplanetary CMEs are calculated and ***, the detectability of gyrosynchrotron emission of interplanetary CMEs by radio meters is discussed briefly.

关键词：日冕物质抛射行星际辐射计等离子体发射排放机制电发射射电望远镜等离子体云

Reply to Comment by Lamy et al. on “Locating the source field lines of Jovian decametric radio emissions”

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Earth and Planetary Physics 2022年第1期6卷 13-17页

作者： YuMing wang RuoBing Zheng XianZhe Jia chuanbing wang Shui wang V.Krupar CAS Key Laboratory of Geospace Environment School of Earth and Space SciencesUniversity of Science and Technology of ChinaHefei 230026China CAS Center for Excellence in Comparative Planetology Hefei 230026China Mengcheng National Geophysical Observatory School of Earth and Space SciencesUniversity of Science and Technology of ChinaHefei 230026China Department of Climate and Space Sciences and Engineering University of MichiganAnn ArborMI 48109-2143USA Universities Space Research Association ColumbiaMarylandUSA NASA Goddard Space Flight Center GreenbeltMarylandUSA Department of Space Physics Institute of Atmospheric PhysicsThe Czech Academy of SciencesPragueCzech Republic

Locating the source of decametric(DAM)radio emissions is a key step in the use of remote radio observations to understand the Jovian magnetospheric dynamics and their interaction with the planet’s *** YM et al.(2020)presented a method by which recorded arc-shaped DAM emissions in the radio dynamic spectra can be used to locate the source of a *** Io-related DAM event on March 14,2014 was used to demonstrate the method.A key parameter in the method is whether the DAM is emitted in the northern or the southern hemisphere;the hemisphere of origin can be determined definitively from the polarization of the ***,polarization information for the emission on March 14,2014 event was not *** analysis assumed the source to be in the northern *** et al.(2022)argue convincingly that the source was probably in the southern *** appreciate the helpful contribution of Lamy et al.(2022)to this discussion and have updated our analysis,this time assuming that the DAM source was in the southern *** also explore the sensitivity of our method to another parameter-the height at which the value of fce,max,which is the maximal electron cyclotron frequency reached along the active magnetic flux tube,is ***,we introduce our recent statistical study of 68 DAM events,which lays a more solid basis for testing the reliability of our method,which we continue to suggest is a promising tool by which remote radio observations can be used to locate the emission source of Jovian DAMs.

关键词： radio decametric emissions Jovian magnetosphere energetic electrons

锚索丝轴向受力-破断能量聚散演化与吸能防护机理

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煤炭学报 2024年第8期49卷 3353-3365页

作者：涂敏郭福鑫张向阳王传兵安徽理工大学矿业工程学院安徽淮南232001 淮河能源集团公司平安煤炭开采工程技术研究院有限责任公司安徽淮南232001

针对深部高应力巷道顶板锚索在拉伸、剪切、扭转等复合作用下,积聚应变能瞬间释放,引发锚索抽丝破断弹射事故,严重影响煤矿安全生产。以张集矿1421(3)锚索支护巷道为工程背景,运用理论分析、数值模拟、实验室试验相结合的研究方法,揭示... 详细信息

针对深部高应力巷道顶板锚索在拉伸、剪切、扭转等复合作用下,积聚应变能瞬间释放,引发锚索抽丝破断弹射事故,严重影响煤矿安全生产。以张集矿1421(3)锚索支护巷道为工程背景,运用理论分析、数值模拟、实验室试验相结合的研究方法,揭示锚索-围岩能量孕育演化机制与锚索防护装置吸能防护机理。结果表明:由锚索丝单轴拉伸试验与全量本构模型得到锚索丝破断应变能密度为55 MJ/m^(3),锚索丝破断弹射释放能量与锚索丝破断长度、轴力、直径呈正相关。根据数值模拟,锚索距顶板0.6 m处剪切应力集中,易发生锚索抽丝破断弹射,长度0.8 m锚索丝弹射初速度为102 m/s。通过仿真模拟结合强度理论,原方案锚索吸能防护装置冲击荷载极限为20 m/s,增加锚索防护装置底座护壁使冲击荷载极限提升至200 m/s,有效解决锚索丝冲击防护装置偏转失效问题。基于锚索防护装置静态拉伸试验与自由落体冲击试验对数值模拟结果进行可靠性验证,获得防护装置最大吸能阈值为1189 J;无护壁防护装置弹簧底座在冲击力作用下产生侧向偏移,弹簧底部剪切破坏;增加弹簧底座护壁,可有效约束底座偏移,充分发挥弹簧拉伸吸能特性,防止弹簧剪切损伤后失效,试验结果与数值模拟结果相符。研究成果为同规格锚索巷道支护设计、锚索抽丝破断弹射与防护提供借鉴。

关键词：巷道支护能量演化应变能密度弹射能量耗散能量吸能防护

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空间等离子体云的回旋同步辐射

空间科学学报 2009年第2期29卷 175-182页

作者：孙伟英王传兵吴季王水中国科学院空间科学与应用研究中心北京100190 中国科学技术大学地球和空间科学学院

CME在行星际空间传播时,会导致强磁场、高密度等离子体云的出现.回旋同步辐射是此类等离子体的一种主要的射电辐射机制,且携带行星际磁场的重要信息.本文重点探讨了光深T_V≤1时回旋同步辐射的发射、吸收及极化特性,包括热电子、非热电... 详细信息

CME在行星际空间传播时,会导致强磁场、高密度等离子体云的出现.回旋同步辐射是此类等离子体的一种主要的射电辐射机制,且携带行星际磁场的重要信息.本文重点探讨了光深T_V≤1时回旋同步辐射的发射、吸收及极化特性,包括热电子、非热电子,投掷角各向同性、投掷角各向异性等离子体云的回旋同步辐射过程的研究分析.在此基础上,推导了考虑折射指数情况下,辐射强度、辐射亮温的表达式.

关键词：等离子体云回旋同步辐射吸收极化辐射强度亮温

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数控系统中GUI软件平台设计和实现

制造技术与机床 2017年第9期 174-176页

作者：杨文锦王传兵武汉华中数控股份有限公司湖北武汉430223

在嵌入式系统中,人机交互GUI一般采用既有的开源系统。自主设计和实现了一种应用于嵌入式数控系统中的跨平台GUI组件,采用面向对象中设计模式的软件设计方法,增加了系统的稳定性和可复用性,缩短设计周期;并创新性地利用ARM的NEON指令集... 详细信息

在嵌入式系统中,人机交互GUI一般采用既有的开源系统。自主设计和实现了一种应用于嵌入式数控系统中的跨平台GUI组件,采用面向对象中设计模式的软件设计方法,增加了系统的稳定性和可复用性,缩短设计周期;并创新性地利用ARM的NEON指令集功能,增强显示效率。

关键词： GUI 设计模式 ARM NEON

Overview of the Solar Polar Orbit Telescope Project for Space Weather Mission

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空间科学学报 2016年第3期36卷 245-266页

作者： XIONG Ming LIU Ying LIU Hao LI Baoquan ZHENG Jianhua ZHANG Cheng XIA Lidong ZHANG Hongxin RAO Wei CHEN Changya SUN Weiying WU Xia DENG Yuanyong HE Han JIANG Bo wang Yuming wang chuanbing SHEN Chenglong ZHANG Haiying ZHANG Shenyi YANG Xuan SANG Peng WU Ji National Space Science Center Chinese Academy of Sciences Center for Space Weather Sciences Shandong University at Weihai Changchun Institute of Optics Fine Mechanics and PhysicsChinese Academy of Sciences Beijing Institute of Spacecraft System Engineering China Aerospace Science and Technology Corporation Shanghai Institute of Satellite Engineering China Aerospace Science and Technology Corporation National Astronomical Observatories Chinese Academy of Sciences Xi'an Institute of Optics and Precision Mechanics Chinese Academy of Sciences School of Earth and Space Sciences University of Science and Technology of China Nanjing Institute of Astronomical Optics and Technology Chinese Academy of Sciences

The Solar Polar ORbit Telescope(SPORT) project for space weather mission has been under intensive scientific and engineering background studies since it was incorporated into the Chinese Space Science Strategic Pioneer Project in *** is designed to carry a suite of remote-sensing and in-situ instruments to observe Coronal Mass Ejections(CMEs),energetic particles,solar high-latitude magnetism,and the fast solar wind from a polar orbit around the *** first extended view of the polar regions of the Sun and the ecliptic enabled by SPORT will provide a unique opportunity to study CME propagation through the inner heliosphere,and the solar high-latitude magnetism giving rise to eruptions and the fast solar *** observations between SPORT and other spaceborne/ground-based facilities within the International Living With a Star(ILWS) framework can significantly enhance scientific *** is now competing for official selection and implementation during China's 13 th Five-Year Plan period of 2016-2020.

关键词： Space weather Coronal mass ejection Solar magnetism Solar wind Solar energetic particle

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安徽省空气质量时空演变特征研究

合肥师范学院学报 2015年第5期33卷 69-75页

作者：王传兵合肥师范学院经济与管理学院安徽合肥230601

空气质量是影响居民生活的重要因素,根据空气质量指数可以把空气质量分成不同等级。基于2007—2014年安徽省环境保护厅和合肥市环境保护局提供的全省16个地市每月空气质量达标的天数,分别算出各市空气质量优良率(%)、空气质量距平数(A)... 详细信息

空气质量是影响居民生活的重要因素,根据空气质量指数可以把空气质量分成不同等级。基于2007—2014年安徽省环境保护厅和合肥市环境保护局提供的全省16个地市每月空气质量达标的天数,分别算出各市空气质量优良率(%)、空气质量距平数(A)、空气年际变异系数(Cv)和季节变动指数(S)等指标。研究发现:(1)全省空气质量优良率空间格局是皖南、皖北高,江淮地区低,呈"U"形分布。时间演变呈现近两年下降趋势,夏秋季节好于冬春季节;(2)池州、黄山空气质量稳定,一直处在全省最高水平,年际、季节变化最小。合肥空气质量年际、季节变化大,且质量较低。其它地市年际、季节变化呈增大趋势;(3)自然因素是导致各地空气质量差异的基础,但是人为因素,如产业结构、秸秆焚烧、尾气排放等进一步增强了空气质量的时空复杂性。

关键词：空气质量距平数变异系数时空演变安徽省

深井巷道全断面硬岩掘进机及其快速施工关键技术

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煤炭学报 2020年第9期45卷 3314-3324页

作者：程桦唐彬唐永志姚直书王传兵荣传新安徽理工大学土木建筑学院安徽淮南232001 淮南矿业(集团)有限责任公司安徽淮南232001 淮南矿业集团博士后科研工作站安徽淮南232001

针对煤矿深井硬岩巷道掘进效率低下的技术难题,综合考虑深立井煤矿巷道工程环境和全断面掘进机技术特点,通过全断面掘进机施工煤矿深井岩巷可行性研究,制定了煤矿深井巷道全断面硬岩掘进机技术指标,研制了煤矿深井巷道全断面硬岩掘进机... 详细信息

针对煤矿深井硬岩巷道掘进效率低下的技术难题,综合考虑深立井煤矿巷道工程环境和全断面掘进机技术特点,通过全断面掘进机施工煤矿深井岩巷可行性研究,制定了煤矿深井巷道全断面硬岩掘进机技术指标,研制了煤矿深井巷道全断面硬岩掘进机;基于考虑全断面掘进机施工扰动影响的岩石循环加卸载试验,建立了全断面掘进机快速施工围岩准静态循环加卸载损伤本构模型和非线性强度准则,并用于巷道围岩稳定性数值模拟中;通过数值模拟和现场监测,揭示了全断面掘进机快速施工围岩力学响应机理,提出了满足全断面掘进机快速施工煤矿硬岩巷道特点与要求的巷道支护形式和施工技术;通过分析煤矿全断面硬岩掘进机施工巷道围岩的稳定性,提出巷道顶板锚杆快速支护方案,并得到现场实测验证;针对立井井筒运输能力受限、井下工作环境空间狭小、设备需要频繁拆装转场等问题,研发了全断面岩石掘进机井下有限空间运输、组装、拆解技术,创新了全断面岩石掘进机井下始发、掘进关键技术;采用掘进、支护、排矸、辅助运输同步作业方式,解决了硬岩巷道快速施工难题。最后,通过在淮南张集煤矿西二采区1413A高抽巷进行工业性试验验证研究成果。结果表明:全断面掘进机施工煤矿深井硬岩巷道,平均月进尺达404 m,最高月进尺达560 m,为现有硬岩巷道掘进效率的5~10倍。

关键词：全断面掘进机煤矿深井硬岩巷道快速掘进