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Tindale, E.; Chapman, S. C.; Moloney, N. R. and Watkins, N. W.
(2018).
DOI: https://doi.org/10.1029/2018ja025740
Abstract
Time series of solar wind variables are “bursty” in nature. Bursts, or excursions, in the time series of solar wind parameters are associated with various transient structures in the solar wind plasma, and are often the drivers of increased space weather activity in Earth's magnetosphere. We define bursts by setting a threshold value of the time series and identifying how often, and for how long, it is exceeded. This allows us to study how the statistical distributions and scaling properties of burst parameters vary over solar cycles 23 and 24. We find the distributions of burst duration and integrated burst size vary over the solar cycle, and between the equivalent phases of consecutive cycles. However, there exists a single power law scaling relation between burst size and duration, with a joint area‐duration scaling exponent α that is independent of the solar cycle. This provides a solar cycle invariant constraint between possible sizes and durations of solar wind bursts that can occur.
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- Item ORO ID
- 56422
- Item Type
- Journal Item
- ISSN
- 2169-9380
- Project Funding Details
-
Funded Project Name Project ID Funding Body Not Set ST/N504506/1 STFC (Science & Technology Facilities Council) Not Set FA9550-17-1-0054 U.S. Air Force Office of Scientific Research - Academic Unit or School
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Faculty of Science, Technology, Engineering and Mathematics (STEM) > Engineering and Innovation
Faculty of Science, Technology, Engineering and Mathematics (STEM) - Copyright Holders
- © 2018 American Geophysical Union
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