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A Global Statistical Model of Extreme Geomagnetic Field Fluctuations

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A Global Statistical Model of Extreme Geomagnetic Field Fluctuations. / Rogers, Neil Christopher; Wild, James Anderson; Eastoe, Emma Frances.

Geophysical Research Abstracts. Vol. 21 Munich, Germany : Copernicus GmbH (Copernicus Publications) on behalf of the European Geosciences Union (EGU), 2019. EGU2019-1929 (Geophysical Research Abstracts; Vol. 21).

Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSNAbstract

Harvard

Rogers, NC, Wild, JA & Eastoe, EF 2019, A Global Statistical Model of Extreme Geomagnetic Field Fluctuations. in Geophysical Research Abstracts. vol. 21, EGU2019-1929, Geophysical Research Abstracts, vol. 21, Copernicus GmbH (Copernicus Publications) on behalf of the European Geosciences Union (EGU), Munich, Germany, European Geosciences Union General Assembly 2019, Vienna, Austria, 7/04/19. <https://meetingorganizer.copernicus.org/EGU2019/EGU2019-1929.pdf>

APA

Rogers, N. C., Wild, J. A., & Eastoe, E. F. (2019). A Global Statistical Model of Extreme Geomagnetic Field Fluctuations. In Geophysical Research Abstracts (Vol. 21). [EGU2019-1929] (Geophysical Research Abstracts; Vol. 21). Copernicus GmbH (Copernicus Publications) on behalf of the European Geosciences Union (EGU). https://meetingorganizer.copernicus.org/EGU2019/EGU2019-1929.pdf

Vancouver

Rogers NC, Wild JA, Eastoe EF. A Global Statistical Model of Extreme Geomagnetic Field Fluctuations. In Geophysical Research Abstracts. Vol. 21. Munich, Germany: Copernicus GmbH (Copernicus Publications) on behalf of the European Geosciences Union (EGU). 2019. EGU2019-1929. (Geophysical Research Abstracts).

Author

Rogers, Neil Christopher ; Wild, James Anderson ; Eastoe, Emma Frances. / A Global Statistical Model of Extreme Geomagnetic Field Fluctuations. Geophysical Research Abstracts. Vol. 21 Munich, Germany : Copernicus GmbH (Copernicus Publications) on behalf of the European Geosciences Union (EGU), 2019. (Geophysical Research Abstracts).

Bibtex

@inbook{7d2bc1a90e3549b6a79fca8b8e2dfad1,
title = "A Global Statistical Model of Extreme Geomagnetic Field Fluctuations",
abstract = "The statistics of unusually high rates of change in the horizontal component of the geomagnetic field (dB/dt) are a useful indicator of the likelihood of damaging geomagnetically induced currents (GIC) in ground-based infrastructure such as electricity networks. Using extreme value theory (Coles, 2001) we present a global model of the probability of extreme |dB/dt| based on several decades of measurements from 125 magnetometers worldwide,with time cadences (dt) ranging from 1 to 60 minutes.The occurrence rate of peaks in |dB/dt| above the 99.97th percentile is a function of magnetic latitude, magnetic local time, month, sunspot number, solar wind and interplanetary magnetic field conditions, and the direction of the field fluctuation. This information may be used to improve the extreme value model. The patterns of occurrence are presented and compared with previously studied distributions of Sudden Commencements, Pc5 ULF waves, and auroral substorm onsets, giving insight into the relative importance of these drivers in GIC modelling.Reference:S. Coles, An introduction to Statistical Modeling of Extreme Values, Springer-Verlag London ltd, 2001.",
keywords = "extreme value theory, Geomagnetism, Geomagnetically induced currents (GIC), space weather",
author = "Rogers, {Neil Christopher} and Wild, {James Anderson} and Eastoe, {Emma Frances}",
year = "2019",
month = feb,
day = "1",
language = "English",
volume = "21",
series = "Geophysical Research Abstracts",
publisher = "Copernicus GmbH (Copernicus Publications) on behalf of the European Geosciences Union (EGU)",
booktitle = "Geophysical Research Abstracts",
note = "European Geosciences Union General Assembly 2019, EGU 2019 ; Conference date: 07-04-2019 Through 12-04-2019",
url = "https://www.egu2019.eu/",

}

RIS

TY - CHAP

T1 - A Global Statistical Model of Extreme Geomagnetic Field Fluctuations

AU - Rogers, Neil Christopher

AU - Wild, James Anderson

AU - Eastoe, Emma Frances

PY - 2019/2/1

Y1 - 2019/2/1

N2 - The statistics of unusually high rates of change in the horizontal component of the geomagnetic field (dB/dt) are a useful indicator of the likelihood of damaging geomagnetically induced currents (GIC) in ground-based infrastructure such as electricity networks. Using extreme value theory (Coles, 2001) we present a global model of the probability of extreme |dB/dt| based on several decades of measurements from 125 magnetometers worldwide,with time cadences (dt) ranging from 1 to 60 minutes.The occurrence rate of peaks in |dB/dt| above the 99.97th percentile is a function of magnetic latitude, magnetic local time, month, sunspot number, solar wind and interplanetary magnetic field conditions, and the direction of the field fluctuation. This information may be used to improve the extreme value model. The patterns of occurrence are presented and compared with previously studied distributions of Sudden Commencements, Pc5 ULF waves, and auroral substorm onsets, giving insight into the relative importance of these drivers in GIC modelling.Reference:S. Coles, An introduction to Statistical Modeling of Extreme Values, Springer-Verlag London ltd, 2001.

AB - The statistics of unusually high rates of change in the horizontal component of the geomagnetic field (dB/dt) are a useful indicator of the likelihood of damaging geomagnetically induced currents (GIC) in ground-based infrastructure such as electricity networks. Using extreme value theory (Coles, 2001) we present a global model of the probability of extreme |dB/dt| based on several decades of measurements from 125 magnetometers worldwide,with time cadences (dt) ranging from 1 to 60 minutes.The occurrence rate of peaks in |dB/dt| above the 99.97th percentile is a function of magnetic latitude, magnetic local time, month, sunspot number, solar wind and interplanetary magnetic field conditions, and the direction of the field fluctuation. This information may be used to improve the extreme value model. The patterns of occurrence are presented and compared with previously studied distributions of Sudden Commencements, Pc5 ULF waves, and auroral substorm onsets, giving insight into the relative importance of these drivers in GIC modelling.Reference:S. Coles, An introduction to Statistical Modeling of Extreme Values, Springer-Verlag London ltd, 2001.

KW - extreme value theory

KW - Geomagnetism

KW - Geomagnetically induced currents (GIC)

KW - space weather

M3 - Abstract

VL - 21

T3 - Geophysical Research Abstracts

BT - Geophysical Research Abstracts

PB - Copernicus GmbH (Copernicus Publications) on behalf of the European Geosciences Union (EGU)

CY - Munich, Germany

T2 - European Geosciences Union General Assembly 2019

Y2 - 7 April 2019 through 12 April 2019

ER -