Factors affecting the electrification of wind-driven dust studied with laboratory simulations

J.P. Merrison; H.P. Gunnlausson; M.R. Hogg; M. Jensen; J.M. Lykke; Morten Bo Madsen; M.B. Nielsen; P. Nørnberg; T.A. Ottosen; R.T. Pedersen; S. Pedersen; A.V. Sørensen

Factors affecting the electrification of wind-driven dust studied with laboratory simulations

J.P. Merrison, H.P. Gunnlausson, M.R. Hogg, M. Jensen, J.M. Lykke, Morten Bo Madsen, M.B. Nielsen, P. Nørnberg, T.A. Ottosen, R.T. Pedersen, S. Pedersen, A.V. Sørensen

Astrophysics and Planetary Science

21 Citations (Scopus)

Abstract

The electrification of wind-blown dust grains was studied in a series of laboratory experiments to examine how grain electrification depends on grain size, grain mineralogy, atmospheric composition, atmospheric pressure, and the method of dust dispersal. This work is intended to contribute to a deeper physical understanding of particle electrification on both Mars and Earth. Findings indicate that the amount of electrification per suspended particle generally is independent of dust entrainment process and atmospheric composition. As expected, the electrification process is grain size-dependent, with smaller grains predominantly electrifying negatively. Although there appears to be a weak dependence upon dust mineralogy, this work supports the expectation that dust suspended in the Martian atmosphere will be significantly electrified.

Original language	English
Journal	Planetary and Space Science
Volume	60
Issue number	1
Pages (from-to)	328-335
ISSN	0032-0633
Publication status	Published - 1 Jan 2012

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http://dx.doi.org/10.1016/j.pss.2011.10.008

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Merrison, J. P., Gunnlausson, H. P., Hogg, M. R., Jensen, M., Lykke, J. M., Madsen, M. B., Nielsen, M. B., Nørnberg, P., Ottosen, T. A., Pedersen, R. T., Pedersen, S., & Sørensen, A. V. (2012). Factors affecting the electrification of wind-driven dust studied with laboratory simulations. Planetary and Space Science, 60(1), 328-335. http://dx.doi.org/10.1016/j.pss.2011.10.008

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AU - Merrison, J.P.

AU - Gunnlausson, H.P.

AU - Hogg, M.R.

AU - Jensen, M.

AU - Lykke, J.M.

AU - Madsen, Morten Bo

AU - Nielsen, M.B.

AU - Nørnberg, P.

AU - Ottosen, T.A.

AU - Pedersen, R.T.

AU - Pedersen, S.

AU - Sørensen, A.V.

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N2 - The electrification of wind-blown dust grains was studied in a series of laboratory experiments to examine how grain electrification depends on grain size, grain mineralogy, atmospheric composition, atmospheric pressure, and the method of dust dispersal. This work is intended to contribute to a deeper physical understanding of particle electrification on both Mars and Earth. Findings indicate that the amount of electrification per suspended particle generally is independent of dust entrainment process and atmospheric composition. As expected, the electrification process is grain size-dependent, with smaller grains predominantly electrifying negatively. Although there appears to be a weak dependence upon dust mineralogy, this work supports the expectation that dust suspended in the Martian atmosphere will be significantly electrified.

AB - The electrification of wind-blown dust grains was studied in a series of laboratory experiments to examine how grain electrification depends on grain size, grain mineralogy, atmospheric composition, atmospheric pressure, and the method of dust dispersal. This work is intended to contribute to a deeper physical understanding of particle electrification on both Mars and Earth. Findings indicate that the amount of electrification per suspended particle generally is independent of dust entrainment process and atmospheric composition. As expected, the electrification process is grain size-dependent, with smaller grains predominantly electrifying negatively. Although there appears to be a weak dependence upon dust mineralogy, this work supports the expectation that dust suspended in the Martian atmosphere will be significantly electrified.

M3 - Journal article

SN - 0032-0633

VL - 60

SP - 328

EP - 335

JO - Planetary and Space Science

JF - Planetary and Space Science

IS - 1

ER -

Factors affecting the electrification of wind-driven dust studied with laboratory simulations

Abstract

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