Testing the accuracy of magnetospheric model field line mapping

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Testing the accuracy of magnetospheric model field line mapping. / Pulkkinen, TI; Tsyganenko, NA.

In: JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol. 101, No. A12, 01.12.1996, p. 27431-27442.

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

Author

Pulkkinen, TI ; Tsyganenko, NA. / Testing the accuracy of magnetospheric model field line mapping. In: JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS. 1996 ; Vol. 101, No. A12. pp. 27431-27442.

BibTeX

@article{c22d343e05684563bc4d457bbde4dfcc,

title = "Testing the accuracy of magnetospheric model field line mapping",

abstract = "We present a new method to test the statistical accuracy of field-aligned mappings by using a large magnetospheric data set and apply the method to the Tsyganenko [1989] model. The obtained errors in the field-aligned mappings are generally small in the auroral Bone outside the midnight sector but become larger on the nightside and within the polar cap. The model tail field is overstretched near midnight and the model field lines flare out toward the flanks and toward high Z values too much. The results also imply that there is a shear layer between the plasma sheet and lobe that could be indicative of the region I field-aligned current system. The large-scale mapping properties suggest that the magnetotail field is asymmetric with respect to the noon-midnight meridian: the model better represents the evening-sector field configuration, whereas the morning-sector model field lines map too far down the tail.",

keywords = "MAGNETIC-FIELD, QUANTITATIVE MODELS, GEOMAGNETIC-FIELD, CURRENT SHEET, TAIL, MAGNETOTAIL, PARAMETERS",

author = "TI Pulkkinen and NA Tsyganenko",

year = "1996",

month = dec,

day = "1",

doi = "10.1029/96JA02489",

language = "English",

volume = "101",

pages = "27431--27442",

journal = "Journal of Geophysical Research: Biogeosciences",

issn = "0148-0227",

publisher = "American Geophysical Union",

number = "A12",

}

RIS

TY - JOUR

T1 - Testing the accuracy of magnetospheric model field line mapping

AU - Pulkkinen, TI

AU - Tsyganenko, NA

PY - 1996/12/1

Y1 - 1996/12/1

N2 - We present a new method to test the statistical accuracy of field-aligned mappings by using a large magnetospheric data set and apply the method to the Tsyganenko [1989] model. The obtained errors in the field-aligned mappings are generally small in the auroral Bone outside the midnight sector but become larger on the nightside and within the polar cap. The model tail field is overstretched near midnight and the model field lines flare out toward the flanks and toward high Z values too much. The results also imply that there is a shear layer between the plasma sheet and lobe that could be indicative of the region I field-aligned current system. The large-scale mapping properties suggest that the magnetotail field is asymmetric with respect to the noon-midnight meridian: the model better represents the evening-sector field configuration, whereas the morning-sector model field lines map too far down the tail.

AB - We present a new method to test the statistical accuracy of field-aligned mappings by using a large magnetospheric data set and apply the method to the Tsyganenko [1989] model. The obtained errors in the field-aligned mappings are generally small in the auroral Bone outside the midnight sector but become larger on the nightside and within the polar cap. The model tail field is overstretched near midnight and the model field lines flare out toward the flanks and toward high Z values too much. The results also imply that there is a shear layer between the plasma sheet and lobe that could be indicative of the region I field-aligned current system. The large-scale mapping properties suggest that the magnetotail field is asymmetric with respect to the noon-midnight meridian: the model better represents the evening-sector field configuration, whereas the morning-sector model field lines map too far down the tail.

KW - MAGNETIC-FIELD

KW - QUANTITATIVE MODELS

KW - GEOMAGNETIC-FIELD

KW - CURRENT SHEET

KW - TAIL

KW - MAGNETOTAIL

KW - PARAMETERS

U2 - 10.1029/96JA02489

DO - 10.1029/96JA02489

M3 - Article

VL - 101

SP - 27431

EP - 27442

JO - Journal of Geophysical Research: Biogeosciences

JF - Journal of Geophysical Research: Biogeosciences

SN - 0148-0227

IS - A12

ER -

ID: 28034857