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  1. Revealing subsurface structures is a fundamental task in geophysical and geological studies. Logging data are usually acquired through drilling projects, which constrain the subsurface structure, and together ...

    Authors: Suguru Yabe, Yohei Hamada, Rina Fukuchi, Shunichi Nomura, Norio Shigematsu, Tsutomu Kiguchi and Kenta Ueki
    Citation: Earth, Planets and Space 2022 74:93
  2. We report ground-based environmental assessments performed during development of the sampler system until the launch of the Hayabusa2 spacecraft. We conducted static monitoring of potential contaminants to ass...

    Authors: Kanako Sakamoto, Yoshinori Takano, Hirotaka Sawada, Ryuji Okazaki, Takaaki Noguchi, Masayuki Uesugi, Hajime Yano, Toru Yada, Masanao Abe and Shogo Tachibana
    Citation: Earth, Planets and Space 2022 74:90
  3. Sporadic E or Es is a transient phenomenon where thin layers of enhanced electron density appear in the ionospheric E region (90–120 km altitude). The neutral wind shear caused by atmospheric tides can lead io...

    Authors: Sahar Sobhkhiz-Miandehi, Yosuke Yamazaki, Christina Arras, Yasunobu Miyoshi and Hiroyuki Shinagawa
    Citation: Earth, Planets and Space 2022 74:88

    The Correction to this article has been published in Earth, Planets and Space 2023 75:160

  4. The Deutsches Geodätisches Forschungsinstitut der Technischen Universität München (DGFI-TUM) is one of the three Combination Centres of the International Earth Rotation and Reference Systems Service for the In...

    Authors: Matthias Glomsda, Mathis Bloßfeld, Manuela Seitz, Detlef Angermann and Florian Seitz
    Citation: Earth, Planets and Space 2022 74:87
  5. A rapid source fault estimation and quantitative assessment of the uncertainty of the estimated model can elucidate the occurrence mechanism of earthquakes and inform disaster damage mitigation. The Bayesian s...

    Authors: Taisuke Yamada, Keitaro Ohno and Yusaku Ohta
    Citation: Earth, Planets and Space 2022 74:86
  6. We conducted waveform inversions of an ultra-long-period (~ 240-s) event associated with the phreatic eruption of Mount Kusatsu–Shirane on January 23, 2018. We used broadband seismic and tilt records from thre...

    Authors: Ryohei Takahashi, Yuta Maeda and Toshiki Watanabe
    Citation: Earth, Planets and Space 2022 74:85
  7. Polar motion (PM) is an essential parameter needed to transform coordinates between celestial and terrestrial reference frames, thus playing a crucial role in precise positioning and navigation. The role of hy...

    Authors: Jolanta Nastula, Justyna Śliwińska, Tomasz Kur, Małgorzata Wińska and Aleksander Partyka
    Citation: Earth, Planets and Space 2022 74:84
  8. Observations and theoretical analysis on the night-time mid-latitude ionospheric irregularities support the postulation of frequently coupled E and F regions. In this paper, we attempt at asserting this notion...

    Authors: Weizheng Fu, Tatsuhiro Yokoyama, Nicholas Ssessanga, Mamoru Yamamoto and Peng Liu
    Citation: Earth, Planets and Space 2022 74:83
  9. This study summarizes the findings of an attitude survey focused on people’s perceptions of seismic hazard maps, which illustrate the risk of an earthquake in each location throughout Japan. These seismic haza...

    Authors: Sayaka Saito, Shinya Yasumoto and Naoya Sekiya
    Citation: Earth, Planets and Space 2022 74:82
  10. Authors: Kuo Hsuan Tseng, Yasuo Ogawa, Nurhasan, Sabri Bülent Tank, Naoto Ujihara, Yoshimori Honkura, Akihiko Terada, Yoshiya Usui and Wataru Kanda
    Citation: Earth, Planets and Space 2022 74:81

    The original article was published in Earth, Planets and Space 2020 72:161

  11. We report paleomagnetic records of Matuyama–Brunhes geomagnetic polarity reversal and associated key tephra layers from the Early–Middle Pleistocene marine sedimentary succession in the Boso Peninsula. The out...

    Authors: Hirokuni Oda, Hiroomi Nakazato, Futoshi Nanayama and Yumiko Harigane
    Citation: Earth, Planets and Space 2022 74:80
  12. Hayabusa2 returned surface samples from the C-type near-Earth asteroid (162173) Ryugu to Woomera, South Australia, in December 2020. The samples returned from Ryugu are expected to contain not only volatile co...

    Authors: Yayoi N. Miura, Ryuji Okazaki, Yoshinori Takano, Kanako Sakamoto, Shogo Tachibana, Keita Yamada, Saburo Sakai and Hirotaka Sawada
    Citation: Earth, Planets and Space 2022 74:76
  13. Issues of predominant period of ground motion and derived underground velocity structure model are investigated in the coastal plains affected by the shallow soft sedimentary layer after the last ice age. It i...

    Authors: Takao Kagawa and Tatsuya Noguchi
    Citation: Earth, Planets and Space 2022 74:74
  14. One of the characteristic features of the gravity recordings produced by the superconducting gravimeter CT #036 at Ishigakijima, Japan, is that it indicates gravity increase when a typhoon (hurricane) approach...

    Authors: Yuichi Imanishi, Kazunari Nawa, Yoshiaki Tamura and Hiroshi Ikeda
    Citation: Earth, Planets and Space 2022 74:73
  15. Interferometric synthetic aperture radar (InSAR) is a useful tool for detecting surface deformations at high spatial resolutions. When InSAR is applied to large surface deformations, clear fringes with complic...

    Authors: Taku Ozawa and Yuji Himematsu
    Citation: Earth, Planets and Space 2022 74:72
  16. Ground-Based Augmentation System (GBAS) is a GNSS augmentation system that meets International Civil Aviation Organization (ICAO) requirements to support precision approach and landing. GBAS is based on local ...

    Authors: Slamet Supriadi, Hasanuddin Zainal Abidin, Dudy Darmawan Wijaya, Prayitno Abadi, Susumu Saito and Dwiko Unggul Prabowo
    Citation: Earth, Planets and Space 2022 74:71
  17. The 6.7 Mw Eastern Iburi earthquake of 6 September 2018 triggered destructive landslides in southern Hokkaido, Japan, many of which were characterized by the flow-like downslope movement of volcanic soils formed ...

    Authors: Jun Kameda
    Citation: Earth, Planets and Space 2022 74:70
  18. In recent years, multistatic specular meteor radars (SMRs) have been introduced to study the Mesosphere and Lower Thermosphere (MLT) dynamics with increasing spatial and temporal resolution. SMRs, compared to ...

    Authors: Harikrishnan Charuvil Asokan, Jorge L. Chau, Raffaele Marino, Juha Vierinen, Fabio Vargas, Juan Miguel Urco, Matthias Clahsen and Christoph Jacobi
    Citation: Earth, Planets and Space 2022 74:69
  19. The feasibility of using a dense seismic array with an airgun source to study the quality factors of shallow media is verified. Data were obtained from 37 stations in the dense seismic array located in Binchua...

    Authors: Shen Du, YanXiang Yu and Liang Xiao
    Citation: Earth, Planets and Space 2022 74:68
  20. Periodic tidal ocean currents induce electric currents and, therefore, magnetic field signals that are observable using spaceborne and ground-based observation techniques. In theory, the signals can be used to...

    Authors: Johannes Petereit, Jan Saynisch-Wagner, Achim Morschhauser, Leonie Pick and Maik Thomas
    Citation: Earth, Planets and Space 2022 74:67
  21. In this paper, we present the D-region ionospheric response during the lifespan (10–19 December 2020) of a severe category 5 tropical cyclone (TC) Yasa in the South Pacific by using the very low frequency (VLF...

    Authors: Paolo A. A. L. Redoblado, Sarwan Kumar, Abhikesh Kumar and Sushil Kumar
    Citation: Earth, Planets and Space 2022 74:65
  22. Very low frequency (VLF) waves (about 3–30 kHz) in the Earth’s magnetosphere interact strongly with energetic electrons and are a key element in controlling dynamics of the Van Allen radiation belts. Bistatic ...

    Authors: James P. McCollough, Yoshizumi Miyoshi, Gregory P. Ginet, William R. Johnston, Yi-Jiun Su, Michael J. Starks, Yoshiya Kasahara, Hirotsugu Kojima, Shoya Matsuda, Iku Shinohara, Paul Song, Bodo W. Reinisch, Ivan A. Galkin, Umran S. Inan, David S. Lauben, Ivan Linscott…
    Citation: Earth, Planets and Space 2022 74:64
  23. A large eruption of the Hunga Tonga-Hunga Haʻapai volcano in Tonga on January 15, 2022 generated air–sea coupled tsunamis observed at the ocean-bottom pressure sensor network along the Japan Trench (S-net) in ...

    Authors: Yuichiro Tanioka, Yusuke Yamanaka and Tatsuya Nakagaki
    Citation: Earth, Planets and Space 2022 74:61
  24. We carried out a statistical analysis of the propagation characteristics of Es and Medium-Scale Traveling Ionospheric Disturbances (MSTIDs) by combining data of HF Doppler (HFD) sounder and Total Electron Cont...

    Authors: Ryo Matsushima, Keisuke Hosokawa, Jun Sakai, Yuichi Otsuka, Mitsumu K. Ejiri, Michi Nishioka and Takuya Tsugawa
    Citation: Earth, Planets and Space 2022 74:60
  25. The cartography of lineaments across a territory can be optimized using geophysical potential field data. In this study, land gravity and EMAG2 (Earth Magnetic Anomaly Grid) data were simultaneously used to id...

    Authors: Cyrille Armel Cheunteu Fantah, Cyrille Adiang Mezoue, Marcelin Pemi Mouzong, Alain Pierre Tokam Kamga, Robert Nouayou and Severin Nguiya
    Citation: Earth, Planets and Space 2022 74:59
  26. The critical taper model best describes the first-order mechanics of subduction zone wedges. The wedge geometry, which is conventionally defined by two parameters, slope angle and basal dip angle, accounts for...

    Authors: Hiroaki Koge, Juichiro Ashi, Jin-Oh Park, Ayumu Miyakawa and Suguru Yabe
    Citation: Earth, Planets and Space 2022 74:56
  27. The violent eruption of Hunga Tonga-Hunga Ha’apai volcano on January 15, 2022 induced strong atmospheric disturbances, which traveled around the world as atmospheric Lamb waves. When this wave passed through t...

    Authors: Yuichi Imanishi
    Citation: Earth, Planets and Space 2022 74:54
  28. Magnetic petrological investigations were conducted on the pumice fall deposits of the 1783 eruption of Asama volcano to examine relationships between bulk magnetic properties and petrological features related...

    Authors: Tatsuo Kanamaru, Kuniyuki Furukawa, Xiangyu Zhao and Yusuke Suganuma
    Citation: Earth, Planets and Space 2022 74:53
  29. Large earthquakes around Japan occur not only in the Pacific Ocean but also in the Sea of Japan, and cause both damage from the earthquake itself and from the ensuing tsunami to the coastal areas. Recently, of...

    Authors: Satoko Murotani, Kenji Satake, Takeo Ishibe and Tomoya Harada
    Citation: Earth, Planets and Space 2022 74:52
  30. Magnetotelluric (MT) data are often distorted by near-surface small-scale lateral heterogeneities. Inverting distorted MT data may produce artifacts or false anomalies, leading to unreliable interpretation. Th...

    Authors: T. Rung-Arunwan, W. Siripunvaraporn and H. Utada
    Citation: Earth, Planets and Space 2022 74:51

    The Correction to this article has been published in Earth, Planets and Space 2023 75:178

  31. Ground motions near the source area of the mainshock of the 2013 Lushan earthquake (Mw 6.6) in Sichuan Province in China were reproduced using the characterized source model and the empirical Green’s function met...

    Authors: Hao Wu, Kojiro Irikura, Ken Miyakoshi and Kazuhiro Somei
    Citation: Earth, Planets and Space 2022 74:50
  32. Correlation between rainfall and short period GPS-TEC (total electron content) variations are investigated by using the precipitation data obtained on the ground and estimated from satellite observations (JAXA...

    Authors: Toshihiko Iyemori, Akiyasu Yamada, Tadashi Aoyama, Kornyanat Hozumi, Yoshihiro Yokoyama, Yoko Odagi, Yasuharu Sano, Vijak Pangsapa, Thanawat Jarupongsakul, Akinori Saito and Masato Iguchi
    Citation: Earth, Planets and Space 2022 74:45
  33. Slow earthquakes have gained importance due to their proximity to the focal regions of megathrust earthquakes. Among slow earthquakes, tectonic tremors have the highest dominant frequency and are thus best res...

    Authors: Masashi Ogiso and Koji Tamaribuchi
    Citation: Earth, Planets and Space 2022 74:49
  34. The rapid convergence of precise point positioning real-time kinematics (PPP-RTK) with centimeter-level accuracy is of utmost importance for many applications. One way of accelerating this convergence is to ex...

    Authors: Zhongbao Yan and Xiaohong Zhang
    Citation: Earth, Planets and Space 2022 74:47
  35. The influence of composition-dependent thermal conductivity and heterogeneous internal heating of primordial dense material on the long-term evolution of primordial reservoirs in the lower mantle of the Earth ...

    Authors: Yang Li, Frédéric Deschamps, Zhidong Shi, Joshua M. Guerrero, Wen-Pin Hsieh, Liang Zhao and Paul J. Tackley
    Citation: Earth, Planets and Space 2022 74:46
  36. Atomic oxygen (O) and atomic hydrogen (H) in the mesopause region are critical species, governing chemistry, airglow, and energy budget. However, they cannot be directly measured by satellite remote sensing te...

    Authors: Mikhail Yu. Kulikov, Mikhail V. Belikovich, Mykhaylo Grygalashvyly, Gerd R. Sonnemann and Alexander M. Feigin
    Citation: Earth, Planets and Space 2022 74:44
  37. We propose a local earthquake tomography method that applies a structured regularization technique to determine sharp changes in Earth’s seismic velocity structure using arrival time data of direct waves. Our ...

    Authors: Yohta Yamanaka, Sumito Kurata, Keisuke Yano, Fumiyasu Komaki, Takahiro Shiina and Aitaro Kato
    Citation: Earth, Planets and Space 2022 74:43
  38. On May 21, 2021 (UTC time), an Mw7.4 earthquake struck Maduo County, Qinghai Province, China. The rupture of this typical strike-slip event and its aftershocks along the Kunlun-Jiangcuo fault (JCF) propagated ...

    Authors: Peiyu Dong, Bin Zhao and Xuejun Qiao
    Citation: Earth, Planets and Space 2022 74:42

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