Three decades of bow shock observations by IMP 8 and model predictions

Mĕrka, J.; Szabó, Á.; Narock, T. W.; Richardson, J. D.; King, J. H.

doi:10.1016/j.pss.2004.09.031

Cited by 14 publications

(29 citation statements)

References 14 publications

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“…The predictions of the model by Peredo et al (1995) were about 20 % larger, while the predictions of the model by Nemecek and Safrankova (1991) were more than 10 % larger than the observed bow shock distances. Merka et al (2005a) extended their earlier investigation using a larger dataset observed by IMP 8 over 27 years. Also, they included the model of Verigin et al (2001b) and found that this model underestimated the distance to the bow shock by about 10 % for average parameters.…”

Section: Tátrallyay Et Al: Multispacecraft Observations Of the Tementioning

confidence: 71%

“…The comparative studies of Merka et al (2003Merka et al ( , 2005a analyzed two of the bow shock models which will be used here for detailed investigations. BS2, the two-dimensional model of Farris and Russell (1994) combined with the model of , and BS4, the three-dimensional model of Verigin et al (2001b), provided reliable predictions for the bow shock location.…”

Section: Modelling the Magnetopause And The Bow Shockmentioning

confidence: 99%

“…BS2, the two-dimensional model of Farris and Russell (1994) combined with the model of , and BS4, the three-dimensional model of Verigin et al (2001b), provided reliable predictions for the bow shock location. BS3, the three-dimensional model by Jerab et al (2005), is an improved version of two earlier models (Formisano, 1979;Nemecek and Safrankova, 1991) which were included in the comparative studies of Merka et al (2003Merka et al ( , 2005a. The arbitrary model BS1 uses a simple two-dimensional shape for the bow shock (Farris et al, 1991) combined with the standoff distance provided by Farris and Russell (1994).…”

Section: Modelling the Magnetopause And The Bow Shockmentioning

confidence: 99%

“…(4b), is taken from the model of Shue et al (1998). Model BS2 was analyzed in the comparative studies of Merka et al (2003Merka et al ( , 2005a.…”

Section: Model 2 (Bs2)mentioning

confidence: 99%

“…The coefficients a ij providing the best fit were determined from the observations; Formisano (1979) used about 2500 bow shock crossings (mainly from the HEOS 2 spacecraft), while Jerab et al (2005) used about 5400 crossings (observed by 5 spacecraft on different orbits) as presented in their papers. Two earlier versions of model BS3 (Formisano, 1979;Nemecek and Safrankova, 1991) were investigated in the comparative studies of Merka et al (2003Merka et al ( , 2005a.…”

Section: Model 3 (Bs3)mentioning

confidence: 99%

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Multispacecraft observations of the terrestrial bow shock and magnetopause during extreme solar wind disturbances

et al. 2012

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Abstract. Three events are discussed from the declining phase of the last solar cycle when the magnetopause and/or the bow shock were observed unusually close to the Earth due to major interplanetary disturbances. The observed extreme locations of the discontinuities are compared with the predictions of three magnetopause and four bow shock models which describe them in considerably different ways using statistical methods based on observations. A new 2-D magnetopause model is introduced (based on Verigin et al., 2009) which takes into account the pressure of the compressed magnetosheath field raised by the interplanetary magnetic field (IMF) component transverse to the solar wind flow. The observed magnetopause crossings could be predicted with a reasonable accuracy (0.1-0.2 R E ) by one of the presented models at least. For geosynchronous magnetopause crossings observed by the GOES satellites, (1) the new model provided the best predictions when the IMF was extremely large having a large negative B z component, and (2)

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Section: Tátrallyay Et Al: Multispacecraft Observations Of the Tementioning

confidence: 71%

Section: Modelling the Magnetopause And The Bow Shockmentioning

confidence: 99%

Section: Modelling the Magnetopause And The Bow Shockmentioning

confidence: 99%

“…(4b), is taken from the model of Shue et al (1998). Model BS2 was analyzed in the comparative studies of Merka et al (2003Merka et al ( , 2005a.…”

Section: Model 2 (Bs2)mentioning

confidence: 99%

Section: Model 3 (Bs3)mentioning

confidence: 99%

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Multispacecraft observations of the terrestrial bow shock and magnetopause during extreme solar wind disturbances

et al. 2012

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The influence of IMF clock angle on the cross section of the tail bow shock

Wang

Кабин

et al. 2016

JGR Space Physics

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We study effects of the interplanetary magnetic field (IMF) orientation on the terrestrial tail bow shock location and shape by using global MHD magnetosphere model and empirical bow shock models. It is shown that the tail bow shock cross section is well approximated by an ellipse with the direction of the major axis roughly perpendicular to the IMF clock angle direction. With the increasing IMF clock angle, the eccentricity of the bow shock cross section increases for northward IMF but decreases for southward IMF.

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Nowcasting and forecasting of the magnetopause and bow shock—A status update

2017

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There has long been interest in knowing the shape and location of the Earth's magnetopause and of the standing fast‐mode bow shock upstream of the Earth's magnetosphere. This quest for knowledge spans both the research and operations arenas. Pertinent to the latter, nowcasting and near‐term forecasting are important for determining the extent to which the magnetosphere is compressed or expanded due to the influence of the solar wind bulk plasma and fields and the coupling to other magnetosphere‐ionosphere processes with possible effects on assets. This article provides an update to a previous article on the same topic published 15 years earlier, with focus on studies that have been conducted, the current status of nowcasting and forecasting of geophysical boundaries, and future endeavors.

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Three decades of bow shock observations by IMP 8 and model predictions

Cited by 14 publications

References 14 publications

Multispacecraft observations of the terrestrial bow shock and magnetopause during extreme solar wind disturbances

Multispacecraft observations of the terrestrial bow shock and magnetopause during extreme solar wind disturbances

The influence of IMF clock angle on the cross section of the tail bow shock

Nowcasting and forecasting of the magnetopause and bow shock—A status update

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