Collaborative Research: Energetic Particle Precipitation Mechanisms in the Inner Magnetosphere: Van Allen Probes and Incoherent Scatter Radar Coordinated Measurements

合作研究:内磁层中的高能粒子沉淀机制:范艾伦探头和非相干散射雷达协调测量

基本信息

  • 批准号:
    1732367
  • 负责人:
  • 金额:
    $ 12.14万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    2017
  • 资助国家:
    美国
  • 起止时间:
    2017-09-01 至 2021-08-31
  • 项目状态:
    已结题

项目摘要

This project will examine the mechanisms by which charged particles in Earth's magnetic field travel both out of and through the atmosphere. Identifying these mechanisms is important for understanding how the various layers of the near-Earth environment are coupled. Understanding the neutral and charged atmosphere has become of increasing interest for understanding the background in which space weather events play. Data from NSF supported facilities such as the Advanced Modular Incoherent Scatter Radar (AMISR) will be analyzed in conjunction with space craft data. This award will also fund two postdoctoral researchers.Current particle precipitation theories assume that energetic particles in the magnetosphere precipitate into the atmosphere after undergoing pitch-angle scattering into the loss cone due to interactions with waves at or near the geomagnetic equator. However, the experimental verification of the effect of the multiple candidate waves on the particles' pitch-angle distributions has not been definitively established. This project brings together height-resolved measurements of ionization in the ionosphere, in situ measurements of pitch-angle scattering in the inner magnetosphere, and multidisciplinary expertise to achieve closure for all wave modes that may be involved in electron precipitation mechanisms. Instances of temporally coincident Van Allen Probes' measurements of particles and waves in the radiation belt (or ring current) and Poker Flat Incoherent Scatter Radar (PFISR) measurements of particles precipitating into the ionosphere near the foot-point of the Van Allen Probes' flux tubes will be identified. The loss-cone distribution functions created by candidate waves for pitch-angle scattering using the quasi-linear diffusion equations will be calculated. Changes in the phase-space distribution of electrons that are produced by the electric and magnetic wave fields in the frequency range from a few Hz to several kHz will be quantified by applying UCLAs Full Diffusion Code to Van Allen Probes' particle and field measurements. Finally, a comparison of the ionization profiles produced in the atmosphere by loss cone distributions calculated from Van Allen Probes' data with the ionization profiles directly measured with PFISR.
该项目将研究地球磁场中的带电粒子在大气层外和穿过大气层的机制。确定这些机制对于了解近地环境各层之间的耦合关系非常重要。了解中性和带电大气层对于了解空间天气事件的背景越来越有意义。来自美国国家科学基金会支持的设施,如先进模块化非相干散射雷达(AMISR)的数据将结合航天器数据进行分析。目前的粒子沉淀理论假设,磁层中的高能粒子在与地磁赤道或附近的波相互作用后,经过俯仰角散射进入损失锥,然后沉淀到大气中。然而,多个候选波对粒子的俯仰角分布的影响的实验验证尚未明确建立。该项目汇集了电离层电离的高度分辨测量、内磁层俯仰角散射的现场测量以及多学科专门知识,以封闭可能参与电子沉淀机制的所有波模式。将确定货车艾伦探测器对辐射带(或环电流)中粒子和波的时间同步测量结果和扑克牌平板非相干散射雷达对货车艾伦探测器通量管脚点附近沉淀到电离层中的粒子的测量结果。将使用准线性扩散方程计算俯仰角散射的候选波产生的损失锥分布函数。通过将UCLA全扩散代码应用于货车艾伦探针的粒子和场测量,将在几Hz到几kHz的频率范围内由电场和磁场产生的电子的相空间分布的变化量化。最后,将由货车艾伦探测器的数据计算的损失锥分布在大气中产生的电离剖面与用PFISR直接测量的电离剖面进行了比较。

项目成果

期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ monograph.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ sciAawards.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ conferencePapers.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ patent.updateTime }}

Jacob Bortnik其他文献

Resonant Scattering of Near-Equatorially Mirroring Electrons by Landau Resonance With H+ Band EMIC Waves
H 波段 EMIC 波朗道共振导致近赤道镜像电子的共振散射
  • DOI:
    10.1029/2018gl079718
  • 发表时间:
    2018
  • 期刊:
  • 影响因子:
    5.2
  • 作者:
    Song Fu;Binbin Ni;Yuequn Lou;Jacob Bortnik;Yasong Ge;Xin Tao;Xing Cao;Xudong Gu;Zheng Xiang;Wenxun Zhang;Yang Zhang;Qi Wang
  • 通讯作者:
    Qi Wang
Distribution and Evolution of Chorus Waves Modeled by a Neural Network: The Importance of Imbalanced Regression
由神经网络建模的合唱波的分布和演化:不平衡回归的重要性
The Response of Ionospheric Currents to External Drivers Investigated Using a Neural Network‐Based Model
使用基于神经网络的模型研究电离层电流对外部驱动器的响应
  • DOI:
  • 发表时间:
    2023
  • 期刊:
  • 影响因子:
    3.7
  • 作者:
    Xin Cao;Xiangning Chu;Jacob Bortnik;J. Weygand;Jinxing Li;Homayon Aryan;Donglai Ma
  • 通讯作者:
    Donglai Ma
Jovian lightning whistles a new tune
木星闪电奏响了新的曲调
  • DOI:
    10.1038/s41550-018-0483-3
  • 发表时间:
    2018-06-06
  • 期刊:
  • 影响因子:
    14.300
  • 作者:
    Jacob Bortnik
  • 通讯作者:
    Jacob Bortnik

Jacob Bortnik的其他文献

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

{{ truncateString('Jacob Bortnik', 18)}}的其他基金

GEM: From the Micro to the Macro--Identifying the Mechanisms Responsible for Megaelectron-Volt (MeV) Electron Microbursts and Quantifying Their Role in Global Radiation Belt Losses
GEM:从微观到宏观——确定兆电子伏(MeV)电子微爆发的机制并量化其在全球辐射带损失中的作用
  • 批准号:
    2025706
  • 财政年份:
    2020
  • 资助金额:
    $ 12.14万
  • 项目类别:
    Standard Grant
GEM: Transit-time Scattering of Energetic Electrons
GEM:高能电子的渡越时间散射
  • 批准号:
    1103064
  • 财政年份:
    2011
  • 资助金额:
    $ 12.14万
  • 项目类别:
    Continuing Grant
The Origin of Plasmaspheric Hiss
等离子层嘶嘶声的起源
  • 批准号:
    0840178
  • 财政年份:
    2009
  • 资助金额:
    $ 12.14万
  • 项目类别:
    Continuing Grant
Nonlinear Wave-particle Interactions
非线性波粒相互作用
  • 批准号:
    0903802
  • 财政年份:
    2009
  • 资助金额:
    $ 12.14万
  • 项目类别:
    Standard Grant

相似国自然基金

Research on Quantum Field Theory without a Lagrangian Description
  • 批准号:
    24ZR1403900
  • 批准年份:
    2024
  • 资助金额:
    0.0 万元
  • 项目类别:
    省市级项目
Cell Research
  • 批准号:
    31224802
  • 批准年份:
    2012
  • 资助金额:
    24.0 万元
  • 项目类别:
    专项基金项目
Cell Research
  • 批准号:
    31024804
  • 批准年份:
    2010
  • 资助金额:
    24.0 万元
  • 项目类别:
    专项基金项目
Cell Research (细胞研究)
  • 批准号:
    30824808
  • 批准年份:
    2008
  • 资助金额:
    24.0 万元
  • 项目类别:
    专项基金项目
Research on the Rapid Growth Mechanism of KDP Crystal
  • 批准号:
    10774081
  • 批准年份:
    2007
  • 资助金额:
    45.0 万元
  • 项目类别:
    面上项目

相似海外基金

Collaborative Research: GEM--Energetic Electron Nonlinear Interactions with Oblique Whistler-Mode Chorus Waves
合作研究:GEM--高能电子与斜惠斯勒模式合唱波的非线性相互作用
  • 批准号:
    2225121
  • 财政年份:
    2022
  • 资助金额:
    $ 12.14万
  • 项目类别:
    Standard Grant
Collaborative Research: ANSWERS: Solar Energetic Particles, Solar Neutrons, and a New Space Weather Facility in Hawaii
合作研究:答案:太阳高能粒子、太阳中子和夏威夷的新空间天气设施
  • 批准号:
    2149810
  • 财政年份:
    2022
  • 资助金额:
    $ 12.14万
  • 项目类别:
    Continuing Grant
Collaborative Research: Energetic Particle Precipitation from the Magnetosphere and Effects on Ozone Dynamics in the Mesosphere and Stratosphere
合作研究:磁层高能粒子沉淀及其对中间层和平流层臭氧动力学的影响
  • 批准号:
    2123253
  • 财政年份:
    2022
  • 资助金额:
    $ 12.14万
  • 项目类别:
    Continuing Grant
Collaborative Research: GEM--Energetic Electron Nonlinear Interactions with Oblique Whistler-Mode Chorus Waves
合作研究:GEM--高能电子与斜惠斯勒模式合唱波的非线性相互作用
  • 批准号:
    2225122
  • 财政年份:
    2022
  • 资助金额:
    $ 12.14万
  • 项目类别:
    Standard Grant
Collaborative Research: ANSWERS: Solar Energetic Particles, Solar Neutrons, and a New Space Weather Facility in Hawaii
合作研究:答案:太阳高能粒子、太阳中子和夏威夷的新空间天气设施
  • 批准号:
    2149811
  • 财政年份:
    2022
  • 资助金额:
    $ 12.14万
  • 项目类别:
    Continuing Grant
Collaborative Research: ANSWERS: Solar Energetic Particles, Solar Neutrons, and a New Space Weather Facility in Hawaii
合作研究:答案:太阳高能粒子、太阳中子和夏威夷的新空间天气设施
  • 批准号:
    2149809
  • 财政年份:
    2022
  • 资助金额:
    $ 12.14万
  • 项目类别:
    Continuing Grant
Collaborative Research: Energetic Particle Precipitation from the Magnetosphere and Effects on Ozone Dynamics in the Mesosphere and Stratosphere
合作研究:磁层高能粒子沉淀及其对中间层和平流层臭氧动力学的影响
  • 批准号:
    2123279
  • 财政年份:
    2022
  • 资助金额:
    $ 12.14万
  • 项目类别:
    Standard Grant
Collaborative Research: Transport Processes Affecting High-Energy Solar Energetic Particles Observed at Earth
合作研究:影响地球上观测到的高能太阳能高能粒子的传输过程
  • 批准号:
    1931300
  • 财政年份:
    2019
  • 资助金额:
    $ 12.14万
  • 项目类别:
    Standard Grant
Collaborative Research: Transport Processes Affecting High-Energy Solar Energetic Particles Observed at Earth
合作研究:影响地球上观测到的高能太阳能高能粒子的传输过程
  • 批准号:
    1931252
  • 财政年份:
    2019
  • 资助金额:
    $ 12.14万
  • 项目类别:
    Standard Grant
COLLABORATIVE RESEARCH: URoL : Epigenetics 2: Predicting phenotypic and eco-evolutionary consequences of environmental-energetic-epigenetic linkages
合作研究:URoL:表观遗传学 2:预测环境-能量-表观遗传联系的表型和生态进化后果
  • 批准号:
    1921402
  • 财政年份:
    2019
  • 资助金额:
    $ 12.14万
  • 项目类别:
    Standard Grant
{{ showInfoDetail.title }}

作者:{{ showInfoDetail.author }}

知道了