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Volume 35, issue 3 | Copyright
Ann. Geophys., 35, 443-451, 2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Regular paper 17 Mar 2017

Regular paper | 17 Mar 2017

THEMIS satellite observations of hot flow anomalies at Earth's bow shock

Christina Chu et al.
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Cited articles
Angelopoulos, V.: The THEMIS Mission, Space Sci. Rev., 141, 5–34,, 2008 (data available at:
Auster, H. U., Glassmeier, K. H., Magnes, W., Aydogar, O., Baumjohann, W., Constantinescu, D., Fischer, D., Fornacon, K. H., Georgescu, E., Harvey, P., Hillenmaier, O., Kroth, R., Ludlam, M., Narita, Y., Nakamura, R., Okrafka, K., Plaschke, F., Richter, I., Schwarzl, H., Stoll, B., Valavanoglou, A., and Wiedemann, M.: The THEMIS Fluxgate Magnetometer, Space Sci. Rev., 141, 235–264,, 2008 (data available at:
Eastwood, J. P., Sibeck, D. G., Angelopoulos, V., Phan, T. D., Bale, S. D., McFadden, J. P., Cully, C. M., Mende, S. B., Larson, D., Frey, S., Carlson, C. W., Glassmeier, K., Auster, H. U., Roux, A., and Le Contel, O.: THEMIS observations of a hot flow anomaly: Solar wind, magnetosheath, and ground-based measurements, Geophys. Res. Lett., 35, L17S03,, 2008.
Facskó, G., Trotignon, J. G., Dandouras, I., Lucek, E. A., and Daly, P. W.: Study of hot flow anomalies using Cluster multi-spacecraft measurements, Adv. Space Res., 45, 541–552,, 2009.
Fillingim, M. O., Eastwood, J. P., Parks, G. K., Angelopoulos, V., Mann, I. R., Mende, S. B., and Weatherwax, A. T.: Polar UVI and THEMIS GMAG observations of the ionospheric response to a hot flow anomaly, J. Atmos. Sol.-Terr. Phy., 73, 137–145,, 2011.
Publications Copernicus
Short summary
Hot flow anomalies (HFAs) at Earth's bow shock were identified in Time History of Events and Macroscale Interactions During Substorms (THEMIS) satellite data from 2007 to 2009. The events were classified as young or mature and regular or spontaneous hot flow anomalies (SHFAs). HFA–SHFA occurrence decreases with distance upstream from the bow shock. HFAs are more prevalent for radial interplanetary magnetic fields and solar wind speeds from 550 to 600 kms−1.
Hot flow anomalies (HFAs) at Earth's bow shock were identified in Time History of Events and...