Europlanet Science Congress 2022
Palacio de Congresos de Granada, Spain
18 – 23 September 2022
Europlanet Science Congress 2022
Palacio de Congresos de Granada, Spain
18 September – 23 September 2022
EPSC Abstracts
Vol. 16, EPSC2022-493, 2022
Europlanet Science Congress 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Identical Interplanetary Coronal Mass Ejection Signatures with Wide Angular Separation

Fernando Carcaboso1,2, Mateja Dumbović3, Manuela Temmer4, Raúl Gómez-Herrrero5, Stephan Heinemann6, Teresa Nieves-Chinchilla1, Astrid Veronig4, Veronika Jercic9, Javier Rodríguez-Pacheco5, Karin Dissauer7, and Tatiana Podladchikova8
Fernando Carcaboso et al.
  • 1NASA/GSFC, Greenbelt, United States of America (
  • 2The Catholic University of America, Washington, DC 20064, USA
  • 3Hvar Observatory, Faculty of Geodesy, University of Zagreb, Croatia
  • 4University of Graz, Institute of Physics, 8010 Graz, Austria
  • 5Universidad de Alcalá, Space Research Group, Alcalá de Henares, 28805 Alcalá de Henares, Spain
  • 6Max-Planck Institute for Solar System Research, 37077 Göttingen, Germany
  • 7NorthWest Research Associates, 3380 Mitchell Lane, Boulder, CO 80301, USA
  • 8Skolkovo Institute of Science and Technology, Bolshoy Boulevard 30, bld. 1, Moscow 121205, Russia
  • 9Centre for mathematical Plasma-Astrophysics, Celestijnenlaan 200B, 3001 Leuven, KU Leuven, Belgium

On March 12, 2012, a Coronal Mass Ejection (CME) was released from the Sun with a speed of ~2000 km/s. The CME source region was surrounded by three different coronal holes (CHs), located to the East (negative polarity), South-West (positive polarity) and West (positive polarity). Its interplanetary counterpart (ICME) impacted Earth and was in-situ measured by the Advanced Composition Explorer (ACE) / Wind at L1 and the Solar TErrestrial RElations Observatory Ahead (STEREO)-A on March 15th. During this period, the angular separation between the two locations was greater than 100 degrees. Nevertheless, the in-situ measurements revealed almost identical profiles with clear markers of ICME signatures, which is evidence of one of the widest reported multi-spacecraft detection of an ICME, having STEREO-A crossing the west flank and Earth the east flank. Supra-thermal electrons show signatures of bidirectionality and isotropy/simple strahl as  the ICME crosses the different spacecraft, providing information about the eroded parts of the ICME. Certain parts might have been  eroded, possibly due to the interaction with the fast solar wind produced by the nearby CHs. We analysed the propagation of the ICME structure using remote-sensing observations from both STEREOs and Earth together with different in-situ instrumentation at ~1 au, and performed a comparison between the physical properties derived at multiple spacecraft. This study shows the importance of multi-spacecraft observations to understand the large-scale structures of ICMEs, their evolution and interaction, as well as their implications for the space-weather discipline.

How to cite: Carcaboso, F., Dumbović, M., Temmer, M., Gómez-Herrrero, R., Heinemann, S., Nieves-Chinchilla, T., Veronig, A., Jercic, V., Rodríguez-Pacheco, J., Dissauer, K., and Podladchikova, T.: Identical Interplanetary Coronal Mass Ejection Signatures with Wide Angular Separation, Europlanet Science Congress 2022, Granada, Spain, 18–23 Sep 2022, EPSC2022-493,, 2022.

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