Identifying and Visualizing Terrestrial Magnetospheric Topology using Geodesic Level Set Method

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dc.contributor.authorXiong, Peikunen_US
dc.contributor.authorFujita, Shigeruen_US
dc.contributor.authorWatanabe, Masakazuen_US
dc.contributor.authorTanaka, Takashien_US
dc.contributor.authorCai, Dongshengen_US
dc.contributor.editorAlliez, Pierreen_US
dc.contributor.editorWimmer, Michaelen_US
dc.date.accessioned2024-03-23T10:14:28Z
dc.date.available2024-03-23T10:14:28Z
dc.date.issued2024
dc.description.abstractThis study introduces a novel numerical method for identifying and visualizing the terrestrial magnetic field topology in a large‐scale three‐dimensional global MHD (Magneto‐Hydro‐Dynamic) simulation. The (un)stable two‐dimensional manifolds are generated from critical points (CPs) located north and south of the magnetosphere using an improved geodesic level set method. A boundary value problem is solved numerically using a shooting method to forward a new geodesic level set from the previous set. These sets are generated starting from a small circle whose centre is a CP. The level sets are the sets of mesh points that form the magnetic manifold, which determines the magnetic field topology. In this study, a consistent method is proposed to determine the magnetospheric topology. Using this scheme, we successfully visualize a terrestrial magnetospheric field topology and identify its two neutral lines using the global MHD simulation. Our results present a terrestrial topology that agrees well with the recent magnetospheric physics and can help us understand various nonlinear magnetospheric dynamics and phenomena. Our visualization enables us to fill the gaps between current magnetospheric physics that can be observed via satellites and nonlinear dynamics, particularly, the bifurcation theory, in the future.en_US
dc.description.number1
dc.description.sectionheadersARTICLES
dc.description.seriesinformationComputer Graphics Forum
dc.description.volume43
dc.identifier.doi10.1111/cgf.14994
dc.identifier.issn1467-8659
dc.identifier.pages13 pages
dc.identifier.urihttps://doi.org/10.1111/cgf.14994
dc.identifier.urihttps://diglib.eg.org/handle/10.1111/cgf14994
dc.publisher© 2024 Eurographics ‐ The European Association for Computer Graphics and John Wiley & Sons Ltd.en_US
dc.subjectmethods and applications
dc.subjectvisualization; flow visualization
dc.subjectvisualization; scientific visualization
dc.titleIdentifying and Visualizing Terrestrial Magnetospheric Topology using Geodesic Level Set Methoden_US
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