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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
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105544
- ISBN
- 9798265404657
- DDC
- 523.7
- 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
- 기본자료저록
- Dissertations Abstracts International. 87-05B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
008260126s2023 us c eng d■001000017360540
■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.


