研究業績

2025

Takada, M., Seki, K., Ogawa, Y., & Keika, K. (2025). Properties of ion upflows in the low-altitude polar ionosphere during CIR- and CME- driven magnetic storms based on long-term EISCAT observations. Journal of Geophysical Research: Space Physics, 130, e2024JA032691. https://doi.org/10.1029/2024JA032691
Okiyama, T., K. Seki, Y. Nakamura, R. J. Lillis, A. Rahmati, D. E. Larson, G. A. DiBraccio N. M. Schneider , S. K. Jain, R. Sakata, and S. Curry (2025). Study of variation mechanisms of the Martian diffuse aurora based on Monte Carlo simulations and MAVEN observations. Journal of Geophysical Research: Space Physics, 130, e2024JA033420. https://doi.org/10.1029/2024JA033420
Clément, N., Nakamura, Y., Blanc, M., Wang, Y., and Al Saati, S. (2025), Ionospheric conductances at the giant planets of the Solar System: a comparative study of ionization sources and the impact of meteoric ions, J. Geophys. Res., 130, e2024JA033061. https://doi.org/10.1029/2024JA033061
Yokota, S., A. Matsuoka, A., N. Murata, Y. Saito, K. Asamura, S. Kasahara, D. Delcourt, L. Z. Hadid, N. Terada, K. Keika, Y. Harada, H. Nakagawa, K. Masunaga, S. Sakai, Y. Futaana, S. Imajo, K. Seki, M. N. Nishino, and Y. Kitamura (2025). Pre-flight performance of the ion energy mass spectrum analyzer for the Martian Moons eXploration (MMX) mission. Prog Earth Planet Sci, 12, 51. https://doi.org/10.1186/s40645-025-00718-2
Yamakawa, T., Seki, K., Miyoshi, Y., Nakamizo, A., and Yamamoto, K. (2025). Excitation of storm-time Pc5 ULF waves during the 22 July 2009 storm: Comparison of GOES, ground observations, and GEMSIS coupled simulation. Journal of Geophysical Research: Space Physics, 130, e2024JA033647. https://doi.org/10.1029/2024JA033647
Jackson, B., Y. Nakamura, and H. Nakagawa (2025). Stereo-imaging of Martian dust plumes by multiple coordinated spacecraft. Res. Notes AAS, 9, 155. https://doi.org/10.3847/2515-5172/ade98e.

2024

Walia, Nehpreet K., Kanako Seki, Takanobu Amano,Naritoshi Kitamura, Yoshifumi Saito, Tara Ahmadi, Daniel J. Gershman, Craig J. Pollock, Barbara L. Giles, Stephen A. Fuselier, Christopher T. Russell, and James L. Burch (2024). A study of slow-mode shocks in the near-Earth magnetotail with MMS observations and hybrid simulations, ApJ, 977:117 (15pp). https://doi.org/10.3847/1538-4357/ad8b23
Shotaro Sakai, Hiromu Nakagawa, Justin Deighan, Sonal K. Jain, Kei Masunaga, Fuminori Tsuchiya, Naoki Terada, Majd Mayyasi, Nicholas M. Schneider, David L. Mitchell, Christian Mazelle, Mehdi Benna, Robert J. Lillis, Go Murakami, Shannon M. Curry, Kanako Seki (2024), C⁺ 133.5 nm emission mechanisms on Mars revealed by the MAVEN observations, ApJ, 977:226 (15pp). https://doi.org/10.3847/1538-4357/ad8e35
Nakagawa, H., S. L. England, A. Kumar, M. Benna, Y. Harada, S. Sakai, N. Terada, K. Seki, and N. Yoshida (2024). Different behavior of density perturbations between dayside and nightside in the Martian thermosphere and the ionosphere associated with atmospheric gravity waves. J. Geophys. Res., 129, e2024JA032988. https://doi.org/10.1029/2024JA032988.
Sun, W., Sakata, R., Ma, Y., Seki, K., Russell, C. T., Terada, N., S. Sakai, H. Shinagawa, D. Brain, and G. Toth (2024). Comprehensive comparison of two global multis‐species MHD models of Mars. Earth and Space Science, 11, e2024EA003698. https://doi.org/10.1029/2024EA003698.
Kei Masunaga, Naoki Terada, François Leblanc, Yuki Harada, Takuya Hara, Shotaro Sakai, Shoichiro Yokota, Kanako Seki, Atsushi Yamazaki, James. P. McFadden, and Tomohiro Usui (2024). A Technique for Retrieving the Exospheric Number Density Distribution from Pickup Ion Ring Distributions, Planet. Sci. J., 5:180 (9pp), doi:10.3847/PSJ/ad65d4.
Nagatani, A., Miyoshi, Y., Asamura, K., Kistler, L. M., Nakamura, S., Seki, K., Y. Ogawa, and I. Shinohara (2024). Variation of molecular ions in the inner magnetosphere observed by the Arase satellite. Geophys. Ress Lett., 51, e2024GL108340, doi:10.1029/2024GL108340.
Seki, K., Y. Matsumoto, N. Terada, T. Hara, D. A. Brain, H. Nakagawa, J. P. McFadden, J. S. Halekas, S. Ruhunusiri, D. L. Mitchell, L. Andersson, J. R. Espley, D. N. Baker, J. G. Luhmann, and B. M. Jakosky (2024). Characteristics of plasma boundaries with large density gradients and their effects on Kelvin–Helmholtz instability. Front. Astron. Space Sci., 11:1394817, doi: 10.3389/fspas.2024.1394817.
Kataoka, R., Y. Miyoshi, K. Shiokawa, N. Nishitani, K. Keika, T. Amano, and K. Seki (2024). Magnetic storm‐time red aurora as seen from Hokkaido, Japan on 1 December 2023 associated with high-density solar wind. Geophys. Ress Lett., 51, e2024GL108778. doi:10.1029/2024GL108778.
Hirahara M., Y. Fukuda, Y. Ebihara, K. Seki, T. Sakanoi, K. Asamura, T. Takada, A. Yamazaki, Y. Kasaba, and H. Saito (2024), Latitudinal profiles of auroral forms/motions and plasma properties based on simultaneous image-particle measurements by Reimei in the midnight auroral oval, J. Geophys. Res., 129, e2023JA032067, doi:10.1029/2023JA032067.
Hara, T., K. Masunaga, N. Terada, S. Sakai, T. Osanai, K. Seki., C. M. Fowler , K. G. Hanley, J. P. McFadden, and S. M. Curry (2024). On the periodic variation of the ion density in the Martian dayside ionosphere during the regional dust storm in September 2016. J. Geophys. Res., 129, e2023JA031848, doi:10.1029/2023JA031848.
Sakata, R., K. Seki, N. Terada, S. Sakai, and H. Shinagawa (2024). Effects of an intrinsic magnetic field on ion escape from ancient Mars based on MAESTRO multifluid MHD simulations. J. Geophys. Res., 129, e2023JA032320. doi:10.1029/2023JA032320.
Kataoka, R., Reddy, S.A., Nakano, S., Pettit, J., and Nakamura, Y. (2024), Extended magenta aurora as revealed by citizen science, Scientific Reports, 14, 25849. https://doi.org/10.1038/s41598-024-75184-9
Yoshida, T., Koyama, S., Nakamura, Y., Terada, N., and Kuramoto, K. (2024), Self-Shielding Enhanced Organics Synthesis in an Early Reduced Earth’s Atmosphere, Astrobiology, 24, 11. https://doi.org/10.1089/ast.2024.0048
Kondo, H., Tsuchiya, F., Kagitani, M., Satoh S., Misawa, H., Nakamura, Y., Murakami, G., Kimura, T., Yamazaki, A., Yoshikawa, I., Kita, H., and Tao, C. (2024), Solar Wind Response of the Dawn‐Dusk Asymmetry in the Io Plasma Torus Using the Haleakala T60 and HISAKI Satellite Observations, Journal of Geophysical Research: Space Physics, 129, 9. https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2024JA032840
Kawamura, Y., Yoshida, T., Terada, N., Nakamura, Y., Koyama, S., Karyu, H., Terada, K., and Sakai S. (2024), Reduced Water Loss due to Photochemistry on Terrestrial Planets in the Runaway Greenhouse Phase around Pre-main-sequence M Dwarfs, The Astrophysical Journal, 967, 95. https://doi.org/10.3847/1538-4357/ad3e7e
Koyama, S., Yoshida, T., Furukawa, Y., Terada, N., Ueno, Y., Nakamura, Y., Kamada, A., Kuroda, T., and Vandaele, A.C. (2024), Stable carbon isotope evolution of formaldehyde on early Mars, Scientific Reports, 14, 21214. https://doi.org/10.1038/s41598-024-71301-w