Building the Magnetosphere From Magnetic Bubbles

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Building the Magnetosphere From Magnetic Bubbles. / Tsyganenko, N. A.; Andreeva, V. A.

In: Geophysical Research Letters, Vol. 45, No. 13, 16.07.2018, p. 6382-6389.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{48618696e241453fab83c1301fb510d7,

title = "Building the Magnetosphere From Magnetic Bubbles",

abstract = "A new approach has been developed to reconstruct the magnetospheric configurations from data by directly representing the magnetic field as a sum of divergence-free contributions from a set of diffuse bubble-like field sources, more or less evenly distributed over the modeling region. Unlike the earlier suggested method based on the radial basis functions, the new fully local approach does not involve toroidal and poloidal fields, which makes it conceptually simpler and computationally more straightforward. The method has been tested on artificial data sets generated using an empirical model and a global magnetohydrodynamic simulation. The new model was shown to faithfully reconstruct the high-latitude magnetospheric structures, such as the field-aligned currents and the diamagnetic depression in the outer polar cusp funnels. The new method can serve as a flexible tool with a tunable resolution and varied focus area, to be used in the data-based modeling of the magnetosphere.",

keywords = "field-aligned currents, magnetosphere, modeling, polar cusps, POLAR CUSPS, FIELD, REPRESENTATION, MODEL, CURRENTS",

author = "Tsyganenko, {N. A.} and Andreeva, {V. A.}",

year = "2018",

month = jul,

day = "16",

doi = "10.1029/2018GL078714",

language = "English",

volume = "45",

pages = "6382--6389",

journal = "Geophysical Research Letters",

issn = "0094-8276",

publisher = "American Geophysical Union",

number = "13",

}

RIS

TY - JOUR

T1 - Building the Magnetosphere From Magnetic Bubbles

AU - Tsyganenko, N. A.

AU - Andreeva, V. A.

PY - 2018/7/16

Y1 - 2018/7/16

N2 - A new approach has been developed to reconstruct the magnetospheric configurations from data by directly representing the magnetic field as a sum of divergence-free contributions from a set of diffuse bubble-like field sources, more or less evenly distributed over the modeling region. Unlike the earlier suggested method based on the radial basis functions, the new fully local approach does not involve toroidal and poloidal fields, which makes it conceptually simpler and computationally more straightforward. The method has been tested on artificial data sets generated using an empirical model and a global magnetohydrodynamic simulation. The new model was shown to faithfully reconstruct the high-latitude magnetospheric structures, such as the field-aligned currents and the diamagnetic depression in the outer polar cusp funnels. The new method can serve as a flexible tool with a tunable resolution and varied focus area, to be used in the data-based modeling of the magnetosphere.

AB - A new approach has been developed to reconstruct the magnetospheric configurations from data by directly representing the magnetic field as a sum of divergence-free contributions from a set of diffuse bubble-like field sources, more or less evenly distributed over the modeling region. Unlike the earlier suggested method based on the radial basis functions, the new fully local approach does not involve toroidal and poloidal fields, which makes it conceptually simpler and computationally more straightforward. The method has been tested on artificial data sets generated using an empirical model and a global magnetohydrodynamic simulation. The new model was shown to faithfully reconstruct the high-latitude magnetospheric structures, such as the field-aligned currents and the diamagnetic depression in the outer polar cusp funnels. The new method can serve as a flexible tool with a tunable resolution and varied focus area, to be used in the data-based modeling of the magnetosphere.

KW - field-aligned currents

KW - magnetosphere

KW - modeling

KW - polar cusps

KW - POLAR CUSPS

KW - FIELD

KW - REPRESENTATION

KW - MODEL

KW - CURRENTS

UR - http://www.scopus.com/inward/record.url?scp=85050487201&partnerID=8YFLogxK

U2 - 10.1029/2018GL078714

DO - 10.1029/2018GL078714

M3 - Article

AN - SCOPUS:85050487201

VL - 45

SP - 6382

EP - 6389

JO - Geophysical Research Letters

JF - Geophysical Research Letters

SN - 0094-8276

IS - 13

ER -

ID: 33902759