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  1. Slow slip events (SSEs) lasting for approximately 1 year occur every 6–8 years around the Bungo Channel in the southwest Japan subduction zone. The slip time evolution of the latest Bungo Channel SSE that occu...

    Authors: Hitoshi Hirose, Takeshi Matsushima, Takao Tabei and Takuya Nishimura
    Citation: Earth, Planets and Space 2023 75:77
  2. Recent eruptions of the Shinmoedake volcano, Japan, have provided a valuable opportunity to investigate the transition between explosive and effusive eruptions. In October 2017, phreatic/phreatomagmatic explos...

    Authors: Fukashi Maeno, Sayaka Shohata, Yuki Suzuki, Natsumi Hokanishi, Atsushi Yasuda, Yuya Ikenaga, Takayuki Kaneko and Setsuya Nakada
    Citation: Earth, Planets and Space 2023 75:76
  3. From April to July 2021, West Crater at Iwo-Yama, Kirishima Volcanic Complex, Japan, was repeatedly filled with hydrothermal water and subsequently evacuated. The overall cycle lasted 14–70 h, and the course o...

    Authors: Harutou Tanabe, Takeshi Matsushima, Koki Aizawa and Dan Muramatsu
    Citation: Earth, Planets and Space 2023 75:75
  4. The study of ground resonances is important to assess seismic site amplification and to infer information on the geometrical and mechanical properties of the resonating structures. 1D- and 2D-type resonances i...

    Authors: Giulia Sgattoni, Giovanni Lattanzi and Silvia Castellaro
    Citation: Earth, Planets and Space 2023 75:74
  5. We performed in-situ analysis on a ~ 1 mm-sized grain A0080 returned by the Hayabusa2 spacecraft from near-Earth asteroid (162173) Ryugu to investigate the relationship of soluble organic matter (SOM) to minerals...

    Authors: Minako Hashiguchi, Dan Aoki, Kazuhiko Fukushima, Hiroshi Naraoka, Yoshinori Takano, Jason P. Dworkin, Karin E. Dworkin, José C. Aponte, Jamie E. Elsila, John M. Eiler, Yoshihiro Furukawa, Aogu Furusho, Daniel P. Glavin, Heather V. Graham, Kenji Hamase, Norbert Hertkorn…
    Citation: Earth, Planets and Space 2023 75:73
  6. Time-averaged shear-wave velocity to 30 m (VS30) is commonly used in ground motion models as a parameter for evaluating site effects. This study used a collection of boreholes in Beijing, Tianjin, Guangxi, Guangd...

    Authors: Yuting Zhang, Yefei Ren, Ruizhi Wen, Hongwei Wang and Kun Ji
    Citation: Earth, Planets and Space 2023 75:72
  7. Recent laboratory friction experiments on large rock samples revealed that dynamic weakening, a remarkable reduction in the friction coefficient at elevated slip rates, occurs at lower slip rates in larger sam...

    Authors: Hiroyuki Noda
    Citation: Earth, Planets and Space 2023 75:71

    The Correction to this article has been published in Earth, Planets and Space 2023 75:108

  8. Ion drag associated with the ionospheric plasma convection plays an important role in the high-latitude thermospheric dynamics, yet changes in the thermospheric wind with geomagnetic activity are not fully und...

    Authors: Shin-ichiro Oyama, Anita Aikio, Takeshi Sakanoi, Keisuke Hosokawa, Heikki Vanhamäki, Lei Cai, Ilkka Virtanen, Marcus Pedersen, Kazuo Shiokawa, Atsuki Shinbori, Nozomu Nishitani and Yasunobu Ogawa
    Citation: Earth, Planets and Space 2023 75:70
  9. Using an atmosphere–ionosphere coupled model (GAIA), atmospheric and ionospheric perturbations triggered by the 2022 Hunga-Tonga volcanic eruption are studied. Our result shows that ionospheric perturbations a...

    Authors: Yasunobu Miyoshi and Hiroyuki Shinagawa
    Citation: Earth, Planets and Space 2023 75:68
  10. To advance the methodology for validating velocity models by waveform comparison, we estimated source parameters for small magnitude earthquakes that can be approximated by point sources. Instead of using publ...

    Authors: Anatoly Petukhin and Yoshinori Iwasaki
    Citation: Earth, Planets and Space 2023 75:69
  11. The forward calculation of magnetotelluric (MT) responses is generally assumed to be sufficiently accurate compared with typical observational errors in practical modeling and inversion studies. Although the u...

    Authors: Kiyoshi Baba
    Citation: Earth, Planets and Space 2023 75:67
  12. Site amplification is an important component of strong ground motion prediction as it differs among sites, reflecting its specific local subsurface geology. Here, we confirm that site amplifications are simila...

    Authors: Kenichi Nakano and Hiroshi Kawase
    Citation: Earth, Planets and Space 2023 75:65
  13. Ionospheric structure is characterized by the space–time variation of electron density. However, our understanding of the physical processes that initiate and sustain intermediate-scale structure development d...

    Authors: Charles Rino, Tatsuhiro Yokoyama and Charles Carrano
    Citation: Earth, Planets and Space 2023 75:64
  14. This paper describes the methods and results of the strong ground motion simulations for three earthquakes from the 2016 Kumamoto earthquake sequence using corrected empirical Green’s functions. The target ear...

    Authors: Yosuke Nagasaka
    Citation: Earth, Planets and Space 2023 75:61
  15. Short-period magnetic enhancements were detected by the MAP-LMAG magnetometer onboard Kaguya orbiting the moon in the solar wind at an altitude of 100 km. The duration was typically 10 s, which corresponds to ...

    Authors: Tomoko Nakagawa, Futoshi Takahashi, Yoshifumi Saito and Hisayoshi Shimizu
    Citation: Earth, Planets and Space 2023 75:60
  16. In this study, the neutral wind observations from the Michelson Interferometer for Global High-resolution Thermospheric Imaging (MIGHTI) instrument onboard Ionospheric CONnections (ICON) are used to investigat...

    Authors: Dan Li, Hong Gao, Jiyao Xu, Yajun Zhu, Qiuyu Xu, Yangkun Liu and Hongshan Liu
    Citation: Earth, Planets and Space 2023 75:59
  17. An analysis of the mechanisms that caused the storm-time effects during two geomagnetic storms that occurred on 17 March 2013 and 2015 is presented. We used Global Navigation Satellite System (GNSS) derived To...

    Authors: Valence Habyarimana, John Bosco Habarulema and Teshome Dugassa
    Citation: Earth, Planets and Space 2023 75:58
  18. At active volcanoes, the surface temperature and its spatial distribution can indicate changes in the underlying magmatic and hydrothermal system. Surface temperature monitoring has been widely performed using...

    Authors: Subaru Nashimoto and Akihiko Yokoo
    Citation: Earth, Planets and Space 2023 75:57
  19. We report the first experiments, where simultaneous electrical resistivity and elastic wave velocity measurements are acquired during the triaxial deformation of granite under brine-saturated conditions. Both ...

    Authors: Ikuo Katayama, Yu Aoi, Kazumasa Tanimoto, Yuya Akamatsu and Kazuki Sawayama
    Citation: Earth, Planets and Space 2023 75:56
  20. The long-period strong ground motions with periods above 1 s have, in the case of farther or deeper earthquakes, potential to cause serious damage to structures with low eigen frequency, such as long bridges, ...

    Authors: Ivo Oprsal, Haruko Sekiguchi, Tomotaka Iwata and Jan Burjanek
    Citation: Earth, Planets and Space 2023 75:55
  21. We have developed a new multi-GNSS data pre-processing software “RINGO” that provides various features including editing, quality checking, clock jump correction, higher order ionosphere correction, conversion...

    Authors: Satoshi Kawamoto, Naofumi Takamatsu and Satoshi Abe
    Citation: Earth, Planets and Space 2023 75:54
  22. Akatsuki has been in operation since Venus orbit insertion-revenge 1 (VOI-R1) in December 2015 and has been making observations of Venus’ cloud-top temperature with Longwave Infrared Camera (LIR) since the sta...

    Authors: Makoto Taguchi, Toru Kouyama, Temma Sugawa, Shin-ya Murakami and Masahiko Futaguchi
    Citation: Earth, Planets and Space 2023 75:53
  23. The impact of strong and weak stratospheric polar vortices on geomagnetic semidiurnal solar and lunar tides is investigated during Northern Hemisphere (NH) winters using ground-based magnetic field observation...

    Authors: Sunil Kumar, Tarique A. Siddiqui, Claudia Stolle, Nicholas M. Pedatella and Duggirala Pallamraju
    Citation: Earth, Planets and Space 2023 75:52
  24. The Hayabusa2 mission provided a unique data set of asteroid Ryugu that covers a wide range of spatial scale from the orbiter remote sensing instruments to the returned samples. The MASCOT lander that was deli...

    Authors: Katharina Otto, Tra-Mi Ho, Stephan Ulamec, Jean-Pierre Bibring, Jens Biele, Matthias Grott, Maximilian Hamm, David Hercik, Ralf Jaumann, Masahiko Sato, Stefan E. Schröder, Satoshi Tanaka, Ulrich Auster, Kohei Kitazato, Jörg Knollenberg, Aurelie Moussi…
    Citation: Earth, Planets and Space 2023 75:51
  25. The station coordinates derived from GNSS (Global Navigation Satellite System) with a conventional static method underpin the study of Earth and planetary science and surveying and mapping. For the continuous ...

    Authors: Naofumi Takamatsu, Hiroki Muramatsu, Satoshi Abe, Yuki Hatanaka, Tomoaki Furuya, Yasuaki Kakiage, Kazuyuki Ohashi, Chiaki Kato, Keitaro Ohno and Satoshi Kawamoto
    Citation: Earth, Planets and Space 2023 75:49
  26. An earthquake swarm in the Wakayama prefecture, Japan, is known as the most active and persistent swarm, with > 95,000 earthquakes (M ≥ –1.3) occurring during the 2003–2020 period. However, no systematic studies ...

    Authors: Junichi Nakajima
    Citation: Earth, Planets and Space 2023 75:48
  27. VLBI simulation studies are carried out to investigate the impact of any proposed station or strategy on the geodetic parameters, such as Earth Orientation Parameters (EOP) and Terrestrial Reference Frame (TRF...

    Authors: Sujata Dhar, Susanne Glaser, Robert Heinkelmann, Harald Schuh, Nagarajan Balasubramanian and Onkar Dikshit
    Citation: Earth, Planets and Space 2023 75:47
  28. Surface and subsurface materials of C-type near-Earth asteroid 162173 Ryugu were collected and successfully returned to the Earth in the Hayabusa2 mission. Fourier Transform Infrared Spectroscopy (FTIR) has be...

    Authors: Kentaro Hatakeda, Toru Yada, Masanao Abe, Tatsuaki Okada, Aiko Nakato, Kasumi Yogata, Akiko Miyazaki, Kazuya Kumagai, Masahiro Nishimura, Yuya Hitomi, Hiromichi Soejima, Kana Nagashima, Miwa Yoshitake, Ayako Iwamae, Shizuho Furuya, Tomohiro Usui…
    Citation: Earth, Planets and Space 2023 75:46
  29. Hayabusa2 spacecraft successfully collected rock samples from the surface of C-type near-Earth asteroid 162173 Ryugu through two touchdowns and brought them back to Earth in 2020. At the Extraterrestrial Sampl...

    Authors: Aiko Nakato, Toru Yada, Masahiro Nishimura, Kasumi Yogata, Akiko Miyazaki, Kana Nagashima, Kentaro Hatakeda, Kazuya Kumagai, Yuya Hitomi, Hiromichi Soejima, Jean-Pierre Bibring, Cedric Pilorget, Vincent Hamm, Rosario Brunetto, Lucie Riu, Lionel Lourit…
    Citation: Earth, Planets and Space 2023 75:45
  30. Horizontal diffusion and resolution are important factors to generate and maintain the super-rotation in the general circulation model (GCM) because waves which transport angular momentum are sensitive to them...

    Authors: Norihiko Sugimoto, Yukiko Fujisawa, Nobumasa Komori, Hiroki Kashimura, Masahiro Takagi and Yoshihisa Matsuda
    Citation: Earth, Planets and Space 2023 75:44
  31. In 2018, a phreatic eruption occurred at Mt. Motoshirane, a pyroclastic cone group of the Kusatsu-Shirane Volcano in central Japan. The eruption was abrupt, and no signs of volcanic activity have been observed...

    Authors: Asami Honda, Wataru Kanda, Takao Koyama, Shinichi Takakura, Yasuo Matsunaga, Tatsuji Nishizawa and Satoshi Ikezawa
    Citation: Earth, Planets and Space 2023 75:43
  32. The Yufutsu Plain, a sedimentary basin surrounded by mountains, is located in the southern part of the Ishikari–Yufutsu Lowlands, Hokkaido, Japan. The Hidaka arc–arc collision zone, located in the eastern part...

    Authors: Naofumi Nakagawa, Nobuo Takai and Michiko Shigefuji
    Citation: Earth, Planets and Space 2023 75:42
  33. The occurrence of plasma irregularities and ionospheric scintillation over the Caribbean region have been reported in previous studies, but a better understanding of the source and conditions leading to these ...

    Authors: Jonas Sousasantos, Josemaria Gomez Socola, Fabiano S. Rodrigues, Richard W. Eastes, Christiano G. M. Brum and Pedrina Terra
    Citation: Earth, Planets and Space 2023 75:41
  34. The study used data acquired by the ESG6 Blind Prediction Step BP1 Working Group for purposes of facilitating a comparison of interpretation methods for obtaining shear-wave velocity profiles (Vs) from array obse...

    Authors: Michael Asten, Aysegul Askan and Shaghayegh Karimzadeh
    Citation: Earth, Planets and Space 2023 75:40
  35. Nine years of ionograms from a higher mid-latitude ionospheric station (Moscow) are analyzed, by applying the ‘height–time–intensity’ (HTI) technique along with Spectrum (Lomb periodogram) analysis with the ai...

    Authors: Christina Oikonomou, Theodoros Leontiou, Haris Haralambous, Tamara L. Gulyaeva and V. A. Panchenko
    Citation: Earth, Planets and Space 2023 75:39
  36. The active Campi Flegrei caldera in southern Italy has a remarkably long history of coexistence between volcanism and human settlements, and it is famous for its peculiar slow ground movement called bradyseism...

    Authors: Stefano Vitale and Jacopo Natale
    Citation: Earth, Planets and Space 2023 75:38
  37. Prediction of ash concentrations in volcanic ash clouds for the Kirishima-Shinmoedake eruption on April 4th, 2018 is performed on the basis of an atmospheric transport model and the Japanese meteorological sat...

    Authors: Kensuke Ishii, Masahiro Hayashi, Hiroshi Ishimoto and Toshiki Shimbori
    Citation: Earth, Planets and Space 2023 75:37
  38. After delivering its sample capsule to Earth, the Hayabusa2 spacecraft started its extended mission to perform a flyby of asteroid 2001 CC21 in 2026 and rendezvous with asteroid 1998 KY26 in 2031. During the exte...

    Authors: Manabu Yamada, Toru Kouyama, Koki Yumoto, Eri Tatsumi, Naofumi Takaki, Yasuhiro Yokota, Tomokatsu Morota, Naoya Sakatani, Masahiko Hayakawa, Moe Matsuoka, Rie Honda, Chikatoshi Honda, Shingo Kameda, Hidehiko Suzuki, Yuichiro Cho, Kazuo Yoshioka…
    Citation: Earth, Planets and Space 2023 75:36
  39. We participated in the blind prediction exercise organized by the committee of the blind prediction experiment during the 6th International Symposium on Effects of Surface Geology on Seismic Motion (CBP-ESG6)....

    Authors: Fumiaki Nagashima, Hiroshi Kawase, Kenichi Nakano and Eri Ito
    Citation: Earth, Planets and Space 2023 75:35
  40. Shikoku island, southwestern Japan lies in the western Nankai Trough and showcases along-strike segmentation of slow earthquake behavior. Whether the spatial variation of tremor behavior reflects the regional ...

    Authors: Kate Huihsuan Chen, Hao-Yu Chiu, Kazushige Obara and Yi-Hung Liu
    Citation: Earth, Planets and Space 2023 75:32
  41. We present our pathway through participation in the blind Kumamoto exercise, particularly the Step 1 of site characterization. The combination of passive and active seismic imaging techniques is used to image ...

    Authors: E. Diego Mercerat and T. Dylan Mikesell
    Citation: Earth, Planets and Space 2023 75:31
  42. The X-rays and extreme ultraviolet (EUV) emitted during solar flares can rapidly change the physical composition of Earth’s ionosphere, causing space weather phenomena. It is important to develop an accurate u...

    Authors: Shohei Nishimoto, Kyoko Watanabe, Hidekatsu Jin, Toshiki Kawai, Shinsuke Imada, Tomoko Kawate, Yuichi Otsuka, Atsuki Shinbori, Takuya Tsugawa and Michi Nishioka
    Citation: Earth, Planets and Space 2023 75:30
  43. The elastodynamic half-space Green’s function has been the subject of research for more than a century since the Lamb’s classical solution. Here, we revisit the problem and present a new closed analytical solu...

    Authors: Francisco J. Sánchez-Sesma, Francisco Luzón, Antonio García-Jerez, Mathieu Perton, Mario A. Sáenz-Castillo and César A. Sierra-Álvarez
    Citation: Earth, Planets and Space 2023 75:29
  44. Evaluating the molecular distribution of organic compounds in pristine extraterrestrial materials is cornerstone to understanding the abiotic synthesis of organics and allows us to better understand the molecu...

    Authors: José C. Aponte, Jason P. Dworkin, Daniel P. Glavin, Jamie E. Elsila, Eric T. Parker, Hannah L. McLain, Hiroshi Naraoka, Ryuji Okazaki, Yoshinori Takano, Shogo Tachibana, Guannan Dong, Sarah S. Zeichner, John M. Eiler, Hisayoshi Yurimoto, Tomoki Nakamura, Hikaru Yabuta…
    Citation: Earth, Planets and Space 2023 75:28

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