Attenuation distance of low frequency waves upstream of the pre‐dawn bow shock: GEOTAIL and ISEE 3 comparison | Zendy

Sugiyama T. | Zendy; Terasawa T. | Zendy; Kawano H. | Zendy; Yamamoto T. | Zendy; Kokubun S. | Zendy; Frank L. A. | Zendy; Ackerson K. | Zendy; Tsurutani B. T. | Zendy

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Attenuation distance of low frequency waves upstream of the pre‐dawn bow shock: GEOTAIL and ISEE 3 comparison

Author(s) -

Sugiyama T.,

Terasawa T.,

Kawano H.,

Yamamoto T.,

Kokubun S.,

Frank L. A.,

Ackerson K.,

Tsurutani B. T.

Publication year - 1995

Publication title -

geophysical research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.007

H-Index - 273

eISSN - 1944-8007

pISSN - 0094-8276

DOI - 10.1029/94gl02918

Subject(s) - physics , bow shock (aerodynamics) , attenuation , bow wave , shock wave , shock (circulatory) , amplitude , astrophysics , magnetosheath , geophysics , magnetopause , magnetosphere , optics , solar wind , magnetic field , mechanics , medicine , quantum mechanics

We have made a statistical study of the spatial distribution of low frequency waves (∼0.01–0.1 Hz) in the region upstream of the pre‐dawn to dawn side bow shock (−50 Re < X < 15 Re) using both GEOTAIL and ISEE‐3 magnetometer data. We have found that the wave amplitude dependence on D and X s , where D is the distance from the bow shock and X s the x‐coordinate position of shock foot point of the IMF, can be described by a functional form of A exp( X s / L X ‐ D / L D ), with the characteristic attenuation distances, L X = 62 ± 12 Re and L D = 59 ± 38 Re.

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