Navegar

Colección

Datos Estadísticas

Conferencia

Este artículo es de Acceso Abierto y puede ser descargado en su versión final desde nuestro repositorio
Consulte el artículo en la página del editor
Consulte la política de Acceso Abierto del editor

Abstract:

The Kelvin-Helmoltz instability (KH) with formation of vortices appears in a wide variety of terrestrial, interplanetary, and astrophysical contexts. We study a series of iterated rolled-up coherent plasma structures (15) that flow in the equatorial Earth's boundary layer (BL), observed on October 24, 2001. The data were recorded during a 1.5 hour-long Wind crossing of the BL at the dawn magnetospheric flank, tailward of the terminator (X≈-13 RE). The interplanetary magnetic field (IMF) was radially directed, almost antiparallel to the magnetosheath (MS) flow. This configuration is expected to be adverse to the KH instability because of the collinearity of field and flow, and the high compressibility of the MS. We analyze the BL stability with compressible MHD theory using continuous profiles for the physical quantities. Upstream, at near Earth sites, we input parameters derived from an exact MHD solution for collinear flows. Further downtail at Wind position we input measured parameters. The BL is found KH unstable in spite of unfavorable features of the external flow. On the experimental side, the passage of vortices is inferred from the presence of low density - hot plasma being accelerated to speeds higher than that of the contiguous MS. It is further supported by the peculiar correlation of relative motions (in the bulk velocity frame): cold-dense plasma drifts sunward, while hot-tenuous plasma moves tailward. This event differs from many other studies that reported BL vortices under strongly northward IMF orientations. This is a case of KH vortices observed under an almost radial IMF, with implicit significance for the more common Parker's spiral fields, and the problem of plasma entry in the magnetosphere.

Registro:

Documento: Conferencia
Título:Velocity shear instability and plasma billows at the Earth's magnetic boundary
Autor:Gratton, F.T.; Gnavi, G.; Farrugia, C.J.; Bilbao, L.; Torbert, R.
Ciudad:Mar del Plata
Filiación:Instituto de Física del Plasma, Consejo Nacional de Investigaciones Científicas Y Técnicas, Universidad de Buenos Aires, Buenos Aires, Argentina
Departamento de Física, Facultad de Ciencias Fisicomatemáticas e Ingeniería, Pontificia Universidad Católica Argentina, Buenos Aires, Argentina
Departamento de Física, Facultad de Ciencias Exactas Y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
Space Science Center, University of New Hampshire, Durham, NH 03824, United States
Palabras clave:Boundary layers; Magnetoplasma; Magnetosphere; Plasma diagnostics; Plasma stability; Shear flow; Stability; Vortex flow; Continuous profile; Input parameter; Interplanetary magnetic fields; Kelvin-Helmoltz instability; Measured parameters; Physical quantities; Plasma structure; Relative motion; Magnetohydrodynamics
Año:2012
Volumen:370
Número:1
DOI: http://dx.doi.org/10.1088/1742-6596/370/1/012003
Título revista:14th Latin American Workshop on Plasma Physics, LAWPP 2011
Título revista abreviado:J. Phys. Conf. Ser.
ISSN:17426588
PDF:https://bibliotecadigital.exactas.uba.ar/download/paper/paper_17426588_v370_n1_p_Gratton.pdf
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17426588_v370_n1_p_Gratton

Referencias:

  • Tritton, D.J., (1988) Physical Fluid Dynamics, , Oxford: Clarendon Press NASA/JPL/Malin Space Science Systems site
  • (1999) Landsat 7 WRS Path 6 Row 83, , center: -33.18, -79.99.; Karman vortices, image taken 9/15
  • (2006) Monthly Weather Review, 134, p. 1036
  • (2011) Geophysical Research Letters, , Feb. 6
  • http://photojournal.jpl.nasa.gov/catalog/PIA06502, Source; Masters, A., (2010) J. Geophys. Res., 115, pp. A07225. , doi:10.1029/2010JA015351
  • Foullon, C., (2011) Astrophys. J. Lett., 729, pp. L8. , SDO/AIA, Ofman L and Thompson B J 2011 arXiv:1101.4249v2 [astro-ph.SR] Jan 25. NASA, SDO
  • Russel, C.T., Kivelson, M.G., (1995) Introduction to Space Physics, , New York: Cambridge University Press
  • Sundberg, T., (2011) Planet. Space Sci., , doi:10.1016 /j.pss. 2011.05.008
  • Bochsler, P., (2010) Ann. Geophys., 28, pp. 491-497
  • Dungey J W 1954 Pennsylvania State University, Ionosphere Research Laboratory, Scientific Report 69; Dungey, J.W., (1961) Phys. Res. Lett., 6, p. 47
  • Axford, W.I., Hines, C.O., (1961) Can. J. Phys., 39, p. 1433
  • Southwood, D.J., (1968) Planet. Space Sci., 16, p. 587
  • Sonnerup, B.U.O., (1980) J.Geophys. Res., 85, p. 2017
  • Hones, (1981) J.Geophys. Res., 86, pp. 814-820
  • Ogilvie, K.W., Fitzenreiter, R.J., (1989) J. Geophys. Res., 94, p. 15113
  • Belmont, G., Chanteur, G., (1989) Physica Scriptae, 124, p. 124
  • Miura, A., (1995) Geophys. Monogr. Ser., 90, p. 285. , Physics of the Magnetopause, ed Song et al. (Washington DC: AGU)
  • Fitzenreiter, Ogilvie, (1995) Geophys. Monogr. Ser., 90, p. 277. , Physics of the Magnetopause, ed Song et al. (Washington DC: AGU)
  • Kivelson, M.G., Chen, S.H., (1995) Geophys. Monogr. Ser., 90, p. 257. , Physics of the Magnetopause, eds Song et al. (Washington DC: AGU)
  • Farrugia, C.J., Gratton, F.T., Torbert, R.B., (2001) Space Sci. Rev., 95, p. 443
  • Lepping, R.P., Burlaga, L.F., (1979) J. Geophys. Res., 84, p. 7099
  • Seon, J., (1995) J. Geophys. Res., 100, p. 907
  • Samson, J.C., Rostoker, G., (1972) J. Geophys. Res., 77, p. 6133
  • Kivelson, M.G., Southwood, D.J., (1986) J. Geophys. Res., 91, p. 4345
  • Miura, A., (1984) J. Geophys. Res., 89, p. 801
  • Fairfield, D.H., (2000) J. Geophys. Res., 105, p. 21159
  • Nykyri, K., Otto, A., (2001) Geophys. Res. Lett., 28, p. 3565
  • Otto, A., Nykyri, K., (2003) Geophys. Monogr., 133, p. 53. , ed P T Newell and T Onsager (Washington DC: AGU)
  • Smets, R., Delcourt, D., Chanteur, G., Moore, T.E., (2002) Ann. Geophysicae, 20, p. 757
  • Hasegawa, H., Fujimoto, M., Phan, T., (2004) Nature, 430, p. 755
  • Hasegawa, H., Retinò, A., Vaivads, A., (2009) J. Geophys. Res., 114, pp. A12207. , doi: 10.1029/2009JA014042
  • Gratton, F.T., (2006) Am. Inst. of Physics, C P 875, pp. 300-303. , Plasma and Fusion Science ed. Herrera Vázquez J J E Washington DC;
  • Gratton, F.T., (2009) J. of Physics CS, 166, p. 012023. , doi:10.1088/1742-6596/166/1/012023
  • Bilbao, L., (2009) J. of Physics CS, 166, p. 012020. , doi:10.1088/1742-6596/166/1/012020
  • Gratton, F.T., (2011) J. of Physics CS, 296, p. 012006. , doi: 10.1088/1742-6596/296/1/012006
  • Nakamura, T.K.M., (2006) Geophys. Res. Lett., 33, pp. L14106. , doi:10.1029/2006GL026318
  • Nakamura, T.K.M., (2008) J. Geophys. Res., 113, pp. A09204. , doi:10.1029/2007JA012803
  • Hwang, K.-J., (2011) J. Geophys. Res., 116, pp. A08210. , doi:10.1029/2011JA016596
  • Fujimoto, M., Terasawa, T., (1994) J. Geophys. Res., 99, p. 8601
  • Otto, A., Fairfield, D.H., (2000) J. Geophys. Res., 105, p. 21175
  • Sandholt, P.E., Farrugia, C.J., Cowley, S.W.H., (1999) Geophys. Res. Lett., 26, p. 2833
  • Onsager, T.G., (2001) J. Geophys. Res., 106, p. 25467
  • Øieroset, M., (2005) Geophys. Res. Lett., 32, pp. L12S07. , doi:10.1029/2004GL021523
  • Gosling, J.T., (1991) J. Geophys. Res., 96, p. 14097
  • La Belle-Hamer, A.L., (1995) J. Geophys. Res., 100, p. 11875
  • Terasawa, T., (1997) Geophys. Res. Lett., 24, p. 935
  • Fujimoto, M., (1998) J. Geophys. Res., 103, p. 2297
  • Fujimoto, M., (1998) J. Geophys. Res., 103, p. 4391
  • Chen, Q., Otto, A., Lee, L.C., (1997) J.Geophys. Res., 102, pp. 151-161
  • Fuselier, S.A., Petrinec, S.M., Trattner, K.J., (2000) Geophys. Res. Lett., 27, p. 473
  • Chandrasekhar, S., (1981) Hydrodynamic and Hydromagnetic Stability, , Dover: Mineola
  • Batchelor, G.K., (1970) An Introduction to Fluid Dynamics, , Cambridge University Press
  • Gratton, J., Gratton, F.T., (1971) Plasma Physics, 13, pp. 567-585
  • Kadomtsev, B.B., (1983) Plasma Physics, , Moscow: MIR
  • Pierce, J.R., (1974) Almost All about Waves, , Boston: MIT Press
  • Duhau, S., Gratton, F.T., Gratton, J., (1971) Phys. Fluids, 14, pp. 2067-2068
  • González, A.G., Gratton, J., (1994) J. Plasma Phys, 51, p. 43
  • González, A.G., Gratton, J., (1994) J. Plasma Phys., 52, p. 233
  • González, A.G., (2002) Braz. J. Phys., 32, p. 945
  • Gratton, F.T., (2004) Braz. J. Phys., 34, p. 1804
  • Gratton, F.T., (2004) J. Geophys. Res., 109, pp. A04211. , doi:10.1029/2003JA010146
  • Farrugia, C.J., (1998) J. Geophys. Res., 103, p. 6703
  • Farrugia, C.J., (1998) Polar Cap Boundary Phenomena, , ed J Moen et al (Kluwer Acad. Publ.)
  • Gratton, F.T., Gratton, J., González, A.G., (1988) Plasma Phys. Controlled Fusion, 30, p. 435
  • Gnavi, G., (2009) J. of Physics C. S., 166, p. 012022. , doi:10.1088/1742-6596/166/1/012022
  • Landau, L.D., (1944) Dokl. Akad. Nauk. SSSR, 44, p. 151
  • Farrugia, C.J., (2003) Adv. Space Res., 31, p. 1105
  • Southwood, D.J., (1974) Planet.Space Sci., 22, p. 483
  • Kivelson, M.G., Southwood, D.J., (1986) J.Geophys.Res., 91, pp. 4345-4351
  • Contin, J.E., Gratton, F.T., Farrugia, C.J., (2003) J Geophys. Res., 108, p. 1227
  • Eastman, T.E., Fuselier, S.A., Gosling, J.T., (1996) J. Geophys. Res., 101, p. 49
  • Gratton, F.T., Farrugia, C.J., Cowley, S.W., (1996) J. Geophys. Res., 101, p. 4929
  • Gratton, F.T., (2003) Planetary and Space Science, 51, pp. 769-783
  • Furth, H.P., Killeen, J., Rosenbluth, M.N., (1963) Phys. of Fluids, 6, p. 495
  • Ofman, L., (1991) Phys. Fluids, B3, p. 1364
  • Ofman, L., (1992) Phys. Fluids B4 2751
  • Einaudi, G., (1999) Plasma Phys.Control. Fusion, 41, pp. A293
  • Fuselier, S.A., Elphic, R.C., Gosling, J.T., (1999) J. Geophys. Res., 104, p. 4515
  • Farrugia, C.J., (2000) J. Geophys. Res., 105, p. 7639
  • Gosling, (1991) J. Geophys. Res., 96, p. 14097
  • Phan, T.D., Lin, R.P., Fuselier, S.A., Fujimoto, M., (2000) J. Geophys. Res., 105, p. 5497
  • Øieroset, (2002) Earth's Low-Latitude Boundary Layer, 133, p. 253. , ed P T Newell and T G Onsager (Washington DC: AGU)
  • Øieroset, M., (2008) Geophys. Res. Lett., 35, pp. L17811. , doi:10.1029/2008GL033661
  • Li, W., (2005) Geophys. Res. Lett., 32, pp. L12S08. , doi:10.1029/2004GL021524
  • Bender, L., (1997) Procesos Disipativos Rápidos en Magnetohidrodinámica, , Physics PhD Thesis, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Biblioteca FCEyN: Tesis n 2957
  • Bender, L., (1998) Anales AFA, 8. , ed R. Gratton et al. (Tandil: ISSN 0327-358X)
  • Gratton, F.T., Krasnopolsky, R., (1994) Proc. The Solar Wind-Magnetosphere System, pp. 343-357. , ed H. K. Biernat et al. (Vienna: Austrian Academy of Sciences ISBN 3-7001-2127-X)
  • Gnavi, G., Gratton, F.T., Farrugia, C.J., (2000) J. Geophy. Res, 105 (A9), pp. 20973-20987
  • Gnavi, G., Farrugia, C.J., Gratton, F.T., (2000) Proc. ICPP 2000, 3, p. 1060
  • Gnavi, G., Farrugia, C.J., Gratton, F.T., (2004) Braz. J. Phys., 34, pp. 1797-1803
  • Farrugia, C.J., (2004) J. Geophys. Res., 109, pp. 1-16
  • Farrugia, C.J., (2005) Annales Geophysicae, 23, pp. 1317-1333
  • Weiss, N.O., (1966) Proc. R. Soc. Lond. A, 293, pp. 310-328. , doi:10.1098/rspa.1966.0173
  • Farrugia, C.J., (2008) J. Geophys. Res., 113, pp. A03208. , doi:10.1029/2007JA012800
  • Farrugia, C.J., Gratton, F.T., (2009) J. Atmos. Solar-Terr. Phys, , doi:10.1016/j.jastp.2009.10.008
  • Foullon, C., (2008) J. Geophys. Res., 113, pp. A11203. , doi:10.1029/2008JA013175
  • Foullon, C., (2009) J. Geophys. Res., 114, pp. A10201. , (doi:10.1029/2009JA014444)
  • Foullon, C., (2010) J. Geophys. Res., 115, pp. A09203. , doi:10.1029/2009JA015189
  • Paschman, G.S., (2005) Ann. Geophys., 23, p. 1481
  • Farrugia, C.J., (2010) J. Geophys. Res., 115, pp. A08227. , doi:10.1029/2009JA015128
  • Farrugia, C.J., (2007) Ann. Geophys., 25, pp. 1-15
  • Spreiter, J.R., Rizzi, A.W., (1974) Acta Astron., 1, pp. 15-35
  • Chen, S.H., (1993) J. Geophys. Res., 98, p. 5727
  • Takagi, K.C., (2006) J. Geophys. Res., 111, pp. A08202. , (doi:10.1029/2006JA011631)
  • Hasegawa, H., (2006) J. Geophys. Res., 111, pp. A09203. , doi:10.1029/2006JA011728A4 - Agencia Nacional de Promocion Cientifica y Tecnologica (ANPCyT); Centro Latino-Americano de Fisica (CLAF); Comision Nacional de Energia Atomica (CNEA); Cons. Nac. Invest. Cient. Tec. (CONICET); et al.; Instituto de Fisica del Plasma (INFIP)

Citas:

---------- APA ----------
Gratton, F.T., Gnavi, G., Farrugia, C.J., Bilbao, L. & Torbert, R. (2012) . Velocity shear instability and plasma billows at the Earth's magnetic boundary. 14th Latin American Workshop on Plasma Physics, LAWPP 2011, 370(1).
http://dx.doi.org/10.1088/1742-6596/370/1/012003
---------- CHICAGO ----------
Gratton, F.T., Gnavi, G., Farrugia, C.J., Bilbao, L., Torbert, R. "Velocity shear instability and plasma billows at the Earth's magnetic boundary" . 14th Latin American Workshop on Plasma Physics, LAWPP 2011 370, no. 1 (2012).
http://dx.doi.org/10.1088/1742-6596/370/1/012003
---------- MLA ----------
Gratton, F.T., Gnavi, G., Farrugia, C.J., Bilbao, L., Torbert, R. "Velocity shear instability and plasma billows at the Earth's magnetic boundary" . 14th Latin American Workshop on Plasma Physics, LAWPP 2011, vol. 370, no. 1, 2012.
http://dx.doi.org/10.1088/1742-6596/370/1/012003
---------- VANCOUVER ----------
Gratton, F.T., Gnavi, G., Farrugia, C.J., Bilbao, L., Torbert, R. Velocity shear instability and plasma billows at the Earth's magnetic boundary. J. Phys. Conf. Ser. 2012;370(1).
http://dx.doi.org/10.1088/1742-6596/370/1/012003