Observation and Numerical Simulation of Cavity Mode Oscillations Excited by an Interplanetary Shock
Kazue Takahashi, Robert Lysak, Massimo Vellante, Craig A. Kletzing, Michael D. Hartinger, Charles W. Smith
Wiley-Blackwell
Published 2018
Wiley-Blackwell
Published 2018
| Publication Date: |
2018-02-22
|
|---|---|
| Publisher: |
Wiley-Blackwell
|
| Print ISSN: |
0148-0227
|
| Topics: |
Geosciences
Physics
|
| Published by: |
| _version_ | 1836398805665185792 |
|---|---|
| autor | Kazue Takahashi, Robert Lysak, Massimo Vellante, Craig A. Kletzing, Michael D. Hartinger, Charles W. Smith |
| beschreibung | Cavity mode oscillations (CMOs) are basic magnetohydrodynamic eigenmodes in the magnetosphere predicted by theory and are expected to occur following the arrival of an interplanetary shock. However, observational studies of shock-induced CMOs have been sparse. We present a case study of a dayside ultra-low-frequency (ULF) wave event that exhibited CMO properties. The event occurred immediately following the arrival of an interplanetary shock at 0829 UT on 15 August 2015. The shock was observed in the solar wind by the Time History of Events and Macroscale Interactions during Substorms-B and -C spacecraft, and magnetospheric ULF waves were observed by multiple spacecraft including the Van Allen Probes-A and -B spacecraft, which were located in the dayside plasmasphere at L ∼ 1.4 and L ∼ 2.4, respectively. Both Van Allen Probes spacecraft detected compressional poloidal mode oscillations at ∼13 mHz (fundamental) and ∼26 mHz (second harmonic). At both frequencies, the azimuthal component of the electric field ( E ϕ ) lagged behind the compressional component of the magnetic field ( B μ ) by ∼90 ∘ . The frequencies and the E ϕ - B μ relative phase are in good agreement with the CMOs generated in a dipole magnetohydrodynamic simulation that incorporates a realistic plasma mass density distribution and ionospheric boundary condition. The oscillations were also detected on the ground by the European quasi-Meridional Magnetometer Array, which was located near the magnetic field footprints of the Van Allen Probes spacecraft. |
| citation_standardnr | 6171477 |
| datenlieferant | ipn_articles |
| feed_copyright | American Geophysical Union (AGU) |
| feed_copyright_url | http://www.agu.org/ |
| feed_id | 7531 |
| feed_publisher | Wiley-Blackwell |
| feed_publisher_url | http://www.wiley.com/wiley-blackwell |
| insertion_date | 2018-02-22 |
| journalissn | 0148-0227 |
| publikationsjahr_anzeige | 2018 |
| publikationsjahr_facette | 2018 |
| publikationsjahr_intervall | 7984:2015-2019 |
| publikationsjahr_sort | 2018 |
| publisher | Wiley-Blackwell |
| quelle | Journal of Geophysical Research JGR - Space Physics |
| relation | http://onlinelibrary.wiley.com/resolve/doi?DOI=10.1002%2F2017JA024639 |
| search_space | articles |
| shingle_author_1 | Kazue Takahashi, Robert Lysak, Massimo Vellante, Craig A. Kletzing, Michael D. Hartinger, Charles W. Smith |
| shingle_author_2 | Kazue Takahashi, Robert Lysak, Massimo Vellante, Craig A. Kletzing, Michael D. Hartinger, Charles W. Smith |
| shingle_author_3 | Kazue Takahashi, Robert Lysak, Massimo Vellante, Craig A. Kletzing, Michael D. Hartinger, Charles W. Smith |
| shingle_author_4 | Kazue Takahashi, Robert Lysak, Massimo Vellante, Craig A. Kletzing, Michael D. Hartinger, Charles W. Smith |
| shingle_catch_all_1 | Observation and Numerical Simulation of Cavity Mode Oscillations Excited by an Interplanetary Shock Cavity mode oscillations (CMOs) are basic magnetohydrodynamic eigenmodes in the magnetosphere predicted by theory and are expected to occur following the arrival of an interplanetary shock. However, observational studies of shock-induced CMOs have been sparse. We present a case study of a dayside ultra-low-frequency (ULF) wave event that exhibited CMO properties. The event occurred immediately following the arrival of an interplanetary shock at 0829 UT on 15 August 2015. The shock was observed in the solar wind by the Time History of Events and Macroscale Interactions during Substorms-B and -C spacecraft, and magnetospheric ULF waves were observed by multiple spacecraft including the Van Allen Probes-A and -B spacecraft, which were located in the dayside plasmasphere at L ∼ 1.4 and L ∼ 2.4, respectively. Both Van Allen Probes spacecraft detected compressional poloidal mode oscillations at ∼13 mHz (fundamental) and ∼26 mHz (second harmonic). At both frequencies, the azimuthal component of the electric field ( E ϕ ) lagged behind the compressional component of the magnetic field ( B μ ) by ∼90 ∘ . The frequencies and the E ϕ - B μ relative phase are in good agreement with the CMOs generated in a dipole magnetohydrodynamic simulation that incorporates a realistic plasma mass density distribution and ionospheric boundary condition. The oscillations were also detected on the ground by the European quasi-Meridional Magnetometer Array, which was located near the magnetic field footprints of the Van Allen Probes spacecraft. Kazue Takahashi, Robert Lysak, Massimo Vellante, Craig A. Kletzing, Michael D. Hartinger, Charles W. Smith Wiley-Blackwell 0148-0227 01480227 |
| shingle_catch_all_2 | Observation and Numerical Simulation of Cavity Mode Oscillations Excited by an Interplanetary Shock Cavity mode oscillations (CMOs) are basic magnetohydrodynamic eigenmodes in the magnetosphere predicted by theory and are expected to occur following the arrival of an interplanetary shock. However, observational studies of shock-induced CMOs have been sparse. We present a case study of a dayside ultra-low-frequency (ULF) wave event that exhibited CMO properties. The event occurred immediately following the arrival of an interplanetary shock at 0829 UT on 15 August 2015. The shock was observed in the solar wind by the Time History of Events and Macroscale Interactions during Substorms-B and -C spacecraft, and magnetospheric ULF waves were observed by multiple spacecraft including the Van Allen Probes-A and -B spacecraft, which were located in the dayside plasmasphere at L ∼ 1.4 and L ∼ 2.4, respectively. Both Van Allen Probes spacecraft detected compressional poloidal mode oscillations at ∼13 mHz (fundamental) and ∼26 mHz (second harmonic). At both frequencies, the azimuthal component of the electric field ( E ϕ ) lagged behind the compressional component of the magnetic field ( B μ ) by ∼90 ∘ . The frequencies and the E ϕ - B μ relative phase are in good agreement with the CMOs generated in a dipole magnetohydrodynamic simulation that incorporates a realistic plasma mass density distribution and ionospheric boundary condition. The oscillations were also detected on the ground by the European quasi-Meridional Magnetometer Array, which was located near the magnetic field footprints of the Van Allen Probes spacecraft. Kazue Takahashi, Robert Lysak, Massimo Vellante, Craig A. Kletzing, Michael D. Hartinger, Charles W. Smith Wiley-Blackwell 0148-0227 01480227 |
| shingle_catch_all_3 | Observation and Numerical Simulation of Cavity Mode Oscillations Excited by an Interplanetary Shock Cavity mode oscillations (CMOs) are basic magnetohydrodynamic eigenmodes in the magnetosphere predicted by theory and are expected to occur following the arrival of an interplanetary shock. However, observational studies of shock-induced CMOs have been sparse. We present a case study of a dayside ultra-low-frequency (ULF) wave event that exhibited CMO properties. The event occurred immediately following the arrival of an interplanetary shock at 0829 UT on 15 August 2015. The shock was observed in the solar wind by the Time History of Events and Macroscale Interactions during Substorms-B and -C spacecraft, and magnetospheric ULF waves were observed by multiple spacecraft including the Van Allen Probes-A and -B spacecraft, which were located in the dayside plasmasphere at L ∼ 1.4 and L ∼ 2.4, respectively. Both Van Allen Probes spacecraft detected compressional poloidal mode oscillations at ∼13 mHz (fundamental) and ∼26 mHz (second harmonic). At both frequencies, the azimuthal component of the electric field ( E ϕ ) lagged behind the compressional component of the magnetic field ( B μ ) by ∼90 ∘ . The frequencies and the E ϕ - B μ relative phase are in good agreement with the CMOs generated in a dipole magnetohydrodynamic simulation that incorporates a realistic plasma mass density distribution and ionospheric boundary condition. The oscillations were also detected on the ground by the European quasi-Meridional Magnetometer Array, which was located near the magnetic field footprints of the Van Allen Probes spacecraft. Kazue Takahashi, Robert Lysak, Massimo Vellante, Craig A. Kletzing, Michael D. Hartinger, Charles W. Smith Wiley-Blackwell 0148-0227 01480227 |
| shingle_catch_all_4 | Observation and Numerical Simulation of Cavity Mode Oscillations Excited by an Interplanetary Shock Cavity mode oscillations (CMOs) are basic magnetohydrodynamic eigenmodes in the magnetosphere predicted by theory and are expected to occur following the arrival of an interplanetary shock. However, observational studies of shock-induced CMOs have been sparse. We present a case study of a dayside ultra-low-frequency (ULF) wave event that exhibited CMO properties. The event occurred immediately following the arrival of an interplanetary shock at 0829 UT on 15 August 2015. The shock was observed in the solar wind by the Time History of Events and Macroscale Interactions during Substorms-B and -C spacecraft, and magnetospheric ULF waves were observed by multiple spacecraft including the Van Allen Probes-A and -B spacecraft, which were located in the dayside plasmasphere at L ∼ 1.4 and L ∼ 2.4, respectively. Both Van Allen Probes spacecraft detected compressional poloidal mode oscillations at ∼13 mHz (fundamental) and ∼26 mHz (second harmonic). At both frequencies, the azimuthal component of the electric field ( E ϕ ) lagged behind the compressional component of the magnetic field ( B μ ) by ∼90 ∘ . The frequencies and the E ϕ - B μ relative phase are in good agreement with the CMOs generated in a dipole magnetohydrodynamic simulation that incorporates a realistic plasma mass density distribution and ionospheric boundary condition. The oscillations were also detected on the ground by the European quasi-Meridional Magnetometer Array, which was located near the magnetic field footprints of the Van Allen Probes spacecraft. Kazue Takahashi, Robert Lysak, Massimo Vellante, Craig A. Kletzing, Michael D. Hartinger, Charles W. Smith Wiley-Blackwell 0148-0227 01480227 |
| shingle_title_1 | Observation and Numerical Simulation of Cavity Mode Oscillations Excited by an Interplanetary Shock |
| shingle_title_2 | Observation and Numerical Simulation of Cavity Mode Oscillations Excited by an Interplanetary Shock |
| shingle_title_3 | Observation and Numerical Simulation of Cavity Mode Oscillations Excited by an Interplanetary Shock |
| shingle_title_4 | Observation and Numerical Simulation of Cavity Mode Oscillations Excited by an Interplanetary Shock |
| timestamp | 2025-06-30T23:32:55.598Z |
| titel | Observation and Numerical Simulation of Cavity Mode Oscillations Excited by an Interplanetary Shock |
| titel_suche | Observation and Numerical Simulation of Cavity Mode Oscillations Excited by an Interplanetary Shock |
| topic | TE-TZ U |
| uid | ipn_articles_6171477 |