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Towards Comprehensively Modeling the Earth-Sun Magnetic Interaction Using Machine Learning
Towards Comprehensively Modeling the Earth-Sun Magnetic Interaction Using Machine Learning
Towards Comprehensively Modeling the Earth-Sun Magnetic Interaction Using Machine Learning

상세정보

자료유형  
 학위논문 서양
최종처리일시  
20260202105544
ISBN  
9798265404657
DDC  
523.7
저자명  
Topliff, Charles A.
서명/저자  
Towards Comprehensively Modeling the Earth-Sun Magnetic Interaction Using Machine Learning
발행사항  
[Sl] : Georgia Institute of Technology, 2023
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2023
형태사항  
136 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-05, Section: B.
주기사항  
Advisor: Cohen, Morris;Davenport, Mark.
학위논문주기  
Thesis (Ph.D.)--Georgia Institute of Technology, 2023.
초록/해제  
요약This thesis aims to comprehensively model the earth-sun magnetic interaction using machine learning techniques. The space science community has developed models of different regions of the space environment which are well understood as standalone components. In recent years, machine learning techniques have emerged as a way to address the shortcomings of these models by leveraging the wealth of data describing the space environment that has accumulated since the onset of the space race.Earth's magnetic field (i.e. the geomagnetic field) is heavily influenced by solar activity through a coupling mechanism known as the solar wind. The solar wind is a stream of charged particles that carries the interplanetary magnetic field through interplanetary space and ultimately influences geomagnetic activity, which can result in disruptions to societal infrastructure such as the power grid and satellite communications. If we can forecast these disruptions, then this damage can be mitigated through precautionary measures.Our research seeks to increase the lead time of geomagnetic activity forecasts to mitigate damage to these systems. In Aim 1, we improve direct geomagnetic index prediction with an LSTM trained to predict geomagnetic indices using measurements of the solar wind near Earth. In Aim 2, we look further back in the chain of events to predict the solar wind directly using solar image data and convolution autoencoders. In particular, we focus on solar wind streams coming from coronal holes, which are responsible for a large portion of the variance of the solar wind. In Aim 3, we aim to improve prediction of solar wind during times when the solar wind is under the influence of anomalies such as interplanetary coronal mass ejections by augmenting our coronal hole model with a model taking sequences of images as an input.
일반주제명  
Solar physics
일반주제명  
Deep learning
일반주제명  
Satellite communications
일반주제명  
Forecasting
일반주제명  
Charged particles
일반주제명  
Magnetic fields
일반주제명  
Neural networks
일반주제명  
Aerospace engineering
일반주제명  
Astrophysics
일반주제명  
Atomic physics
일반주제명  
Electromagnetics
기타저자  
Georgia Institute of Technology.
기본자료저록  
Dissertations Abstracts International. 87-05B.
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

 008260126s2023        us                              c    eng  d
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■00520260202105544
■006m          o    d                
■007cr#unu||||||||
■020    ▼a9798265404657
■035    ▼a(MiAaPQ)AAI32315478
■035    ▼a(MiAaPQ)GeorgiaTech75523
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a523.7
■1001  ▼aTopliff,  Charles  A.
■24510▼aTowards  Comprehensively  Modeling  the  Earth-Sun  Magnetic  Interaction  Using  Machine  Learning
■260    ▼a[Sl]▼bGeorgia  Institute  of  Technology▼c2023
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2023
■300    ▼a136  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-05,  Section:  B.
■500    ▼aAdvisor:  Cohen,  Morris;Davenport,  Mark.
■5021  ▼aThesis  (Ph.D.)--Georgia  Institute  of  Technology,  2023.
■520    ▼aThis  thesis  aims  to  comprehensively  model  the  earth-sun  magnetic  interaction  using  machine  learning  techniques.  The  space  science  community  has  developed  models  of  different  regions  of  the  space  environment  which  are  well  understood  as  standalone  components.  In  recent  years,  machine  learning  techniques  have  emerged  as  a  way  to  address  the  shortcomings  of  these  models  by  leveraging  the  wealth  of  data  describing  the  space  environment  that  has  accumulated  since  the  onset  of  the  space  race.Earth's  magnetic  field  (i.e.  the  geomagnetic  field)  is  heavily  influenced  by  solar  activity  through  a  coupling  mechanism  known  as  the  solar  wind.  The  solar  wind  is  a  stream  of  charged  particles  that  carries  the  interplanetary  magnetic  field  through  interplanetary  space  and  ultimately  influences  geomagnetic  activity,  which  can  result  in  disruptions  to  societal  infrastructure  such  as  the  power  grid  and  satellite  communications.  If  we  can  forecast  these  disruptions,  then  this  damage  can  be  mitigated  through  precautionary  measures.Our  research  seeks  to  increase  the  lead  time  of  geomagnetic  activity  forecasts  to  mitigate  damage  to  these  systems.  In  Aim  1,  we  improve  direct  geomagnetic  index  prediction  with  an  LSTM  trained  to  predict  geomagnetic  indices  using  measurements  of  the  solar  wind  near  Earth.  In  Aim  2,  we  look  further  back  in  the  chain  of  events  to  predict  the  solar  wind  directly  using  solar  image  data  and  convolution  autoencoders.  In  particular,  we  focus  on  solar  wind  streams  coming  from  coronal  holes,  which  are  responsible  for  a  large  portion  of  the  variance  of  the  solar  wind.  In  Aim  3,  we  aim  to  improve  prediction  of  solar  wind  during  times  when  the  solar  wind  is  under  the  influence  of  anomalies  such  as  interplanetary  coronal  mass  ejections  by  augmenting  our  coronal  hole  model  with  a  model  taking  sequences  of  images  as  an  input.
■590    ▼aSchool  code:  0078.
■650  4▼aSolar  physics
■650  4▼aDeep  learning
■650  4▼aSatellite  communications
■650  4▼aForecasting
■650  4▼aCharged  particles
■650  4▼aMagnetic  fields
■650  4▼aNeural  networks
■650  4▼aAerospace  engineering
■650  4▼aAstrophysics
■650  4▼aAtomic  physics
■650  4▼aElectromagnetics
■690    ▼a0538
■690    ▼a0800
■690    ▼a0596
■690    ▼a0748
■690    ▼a0607
■71020▼aGeorgia  Institute  of  Technology.
■7730  ▼tDissertations  Abstracts  International▼g87-05B.
■790    ▼a0078
■791    ▼aPh.D.
■792    ▼a2023
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360540▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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