A statistical look at plasmaspheric drainage plumes

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A statistical look at plasmaspheric drainage plumes. / Borovsky, Joseph E.; Denton, Michael H.
In: Journal of Geophysical Research, Vol. 113, No. A09221, 09.2008, p. 1-23.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Borovsky, JE & Denton, MH 2008, 'A statistical look at plasmaspheric drainage plumes', Journal of Geophysical Research, vol. 113, no. A09221, pp. 1-23. https://doi.org/10.1029/2007JA012994

APA

Borovsky, J. E., & Denton, M. H. (2008). A statistical look at plasmaspheric drainage plumes. Journal of Geophysical Research, 113(A09221), 1-23. https://doi.org/10.1029/2007JA012994

Vancouver

Borovsky JE, Denton MH. A statistical look at plasmaspheric drainage plumes. Journal of Geophysical Research. 2008 Sept;113(A09221):1-23. doi: 10.1029/2007JA012994

Author

Borovsky, Joseph E. ; Denton, Michael H. / A statistical look at plasmaspheric drainage plumes. In: Journal of Geophysical Research. 2008 ; Vol. 113, No. A09221. pp. 1-23.

Bibtex

@article{81785fcbebe74ba3b36b675ceda8e33e,

title = "A statistical look at plasmaspheric drainage plumes",

abstract = "The properties of plasmaspheric drainage plumes are examined using cold-plasma measurements in geosynchronous orbit. During high-speed stream-driven storms, 210 plume crossings are collected and statistically analyzed. Plumes that persist for 4 days are common, which was the duration of our search. Plumes weaken with age, becoming narrower in local time with plasma that becomes less dense. Cold-plasma flow velocities are sunward in the plumes, with flow speeds decreasing as the storms progress. Plumes transfer typically 2 × 1026 ions/sec (1.2 ton/hr of protons) when they are young, and the rate of transport decreases with plume age. A total of approximately 2 × 1031 ions (34 tons of protons) are transported via plumes in the life of a storm. About half of the outer plasmasphere is drained in the first 20 hours of a storm. Large density fluctuations in the plumes indicate that the drainage plumes are lumpy, and large velocity fluctuations of the plasma flow indicate that the drainage plumes may be turbulent. Because of their persistence, drainage plumes are anticipated to be a regular feature of any ongoing geomagnetic storm.",

keywords = "plasmasphere plume high speed stream HSS DCS-publications-id, art-926, DCS-publications-credits, iono, DCS-publications-personnel-id, 123",

author = "Borovsky, {Joseph E.} and Denton, {Michael H.}",

note = "Copyright (2008) American Geophysical Union. Further reproduction or electronic distribution is not permitted",

year = "2008",

month = sep,

doi = "10.1029/2007JA012994",

language = "English",

volume = "113",

pages = "1--23",

journal = "Journal of Geophysical Research",

issn = "0148-0227",

publisher = "American Geophysical Union",

number = "A09221",

}

RIS

TY - JOUR

T1 - A statistical look at plasmaspheric drainage plumes

AU - Borovsky, Joseph E.

AU - Denton, Michael H.

N1 - Copyright (2008) American Geophysical Union. Further reproduction or electronic distribution is not permitted

PY - 2008/9

Y1 - 2008/9

N2 - The properties of plasmaspheric drainage plumes are examined using cold-plasma measurements in geosynchronous orbit. During high-speed stream-driven storms, 210 plume crossings are collected and statistically analyzed. Plumes that persist for 4 days are common, which was the duration of our search. Plumes weaken with age, becoming narrower in local time with plasma that becomes less dense. Cold-plasma flow velocities are sunward in the plumes, with flow speeds decreasing as the storms progress. Plumes transfer typically 2 × 1026 ions/sec (1.2 ton/hr of protons) when they are young, and the rate of transport decreases with plume age. A total of approximately 2 × 1031 ions (34 tons of protons) are transported via plumes in the life of a storm. About half of the outer plasmasphere is drained in the first 20 hours of a storm. Large density fluctuations in the plumes indicate that the drainage plumes are lumpy, and large velocity fluctuations of the plasma flow indicate that the drainage plumes may be turbulent. Because of their persistence, drainage plumes are anticipated to be a regular feature of any ongoing geomagnetic storm.

AB - The properties of plasmaspheric drainage plumes are examined using cold-plasma measurements in geosynchronous orbit. During high-speed stream-driven storms, 210 plume crossings are collected and statistically analyzed. Plumes that persist for 4 days are common, which was the duration of our search. Plumes weaken with age, becoming narrower in local time with plasma that becomes less dense. Cold-plasma flow velocities are sunward in the plumes, with flow speeds decreasing as the storms progress. Plumes transfer typically 2 × 1026 ions/sec (1.2 ton/hr of protons) when they are young, and the rate of transport decreases with plume age. A total of approximately 2 × 1031 ions (34 tons of protons) are transported via plumes in the life of a storm. About half of the outer plasmasphere is drained in the first 20 hours of a storm. Large density fluctuations in the plumes indicate that the drainage plumes are lumpy, and large velocity fluctuations of the plasma flow indicate that the drainage plumes may be turbulent. Because of their persistence, drainage plumes are anticipated to be a regular feature of any ongoing geomagnetic storm.

KW - plasmasphere plume high speed stream HSS DCS-publications-id

KW - art-926

KW - DCS-publications-credits

KW - iono

KW - DCS-publications-personnel-id

KW - 123

UR - http://www.scopus.com/inward/record.url?scp=56749163459&partnerID=8YFLogxK

U2 - 10.1029/2007JA012994

DO - 10.1029/2007JA012994

M3 - Journal article

VL - 113

SP - 1

EP - 23

JO - Journal of Geophysical Research

JF - Journal of Geophysical Research

SN - 0148-0227

IS - A09221

ER -

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