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  1. Dynamical changes in the ionosphere and thermosphere during geomagnetic storm times can have a significant impact on our communication and navigation applications, as well as satellite orbit determination and ...

    Authors: Isabel Fernandez-Gomez, Timothy Kodikara, Claudia Borries, Ehsan Forootan, Andreas Goss, Michael Schmidt and Mihail V. Codrescu
    Citation: Earth, Planets and Space 2022 74:121
  2. This study, for the first time, reports the geomagnetically conjugate structure of a plasma bubble extending to the mid-latitudes and the asymmetrical structure of the decay of the plasma bubble during a geoma...

    Authors: Takuya Sori, Yuichi Otsuka, Atsuki Shinbori, Michi Nishioka and Septi Perwitasari
    Citation: Earth, Planets and Space 2022 74:120
  3. Electric and magnetic field data from the Swarm constellation mission are used to report on the Poynting flux associated with postsunset topside equatorial spread F. A three-dimensional numerical simulation of pl...

    Authors: J. Rodríguez-Zuluaga, C. Stolle, D. Hysell and D. J. Knudsen
    Citation: Earth, Planets and Space 2022 74:119
  4. The deviation of Universal Time from atomic time, expressed as UT1−UTC, reflects the irregularities of the Earth rotation speed and is key to precise geodetic applications which depend on the transformation be...

    Authors: Sigrid Böhm, Johannes Böhm, Jakob Gruber, Lisa Kern, Jamie McCallum, Lucia McCallum, Tiege McCarthy, Jonathan Quick and Matthias Schartner
    Citation: Earth, Planets and Space 2022 74:118
  5. Investigation of the characteristic behavior of successive earthquakes that closely occur in space and time is important to understand the generation mechanism of earthquakes and useful to assess a triggered e...

    Authors: Thystere Matondo Bantidi and Takeshi Nishimura
    Citation: Earth, Planets and Space 2022 74:117
  6. In Southeast Alaska (SE-AK), rapid ground uplift of up to 3 cm/yr has been observed associated with post-Little Ice Age glacial isostatic adjustment (GIA). Geodetic techniques such as global navigation satelli...

    Authors: Kazuhiro Naganawa, Takahito Kazama, Yoichi Fukuda, Satoshi Miura, Hideaki Hayakawa, Yusaku Ohta and Jeffrey T. Freymueller
    Citation: Earth, Planets and Space 2022 74:116
  7. We performed a broadband magnetotelluric (BBMT) survey and three-dimensional resistivity modeling for the Meakandake volcano in eastern Hokkaido, Japan, where remarkable ground deformation suggests a sill-like...

    Authors: Tomohiro Inoue, Takeshi Hashimoto, Ryo Tanaka and Yusuke Yamaya
    Citation: Earth, Planets and Space 2022 74:114
  8. The occurrence characteristics of 150-km echoes in low-latitude regions are studied using the Equatorial Atmosphere Radar (EAR) in Indonesia. The long-term observation of the 150-km echoes by the EAR enables u...

    Authors: Tatsuhiro Yokoyama, Rieko Takagi and Mamoru Yamamoto
    Citation: Earth, Planets and Space 2022 74:113
  9. A large eruption occurred on Jan. 15, 2022, at the submarine volcano Hunga Tonga-Hunga Ha’apai, southern Pacific, and the atmospheric Lamb wave was observed to have traveled round the Earth multiple times with...

    Authors: Kosuke Heki
    Citation: Earth, Planets and Space 2022 74:112
  10. A hierarchical space–time version of the epidemic-type aftershock sequence (HIST–ETAS) model was constructed for an optimally adapted fit to diverse seismicity features characterized by anisotropic clustering ...

    Authors: Yosihiko Ogata
    Citation: Earth, Planets and Space 2022 74:110
  11. To elucidate the characteristics of electromagnetic conjugacy of traveling ionospheric disturbances just after the 15 January 2022 Hunga Tonga-Hunga Ha’apai volcanic eruption, we analyze Global Navigation Sate...

    Authors: Atsuki Shinbori, Yuichi Otsuka, Takuya Sori, Michi Nishioka, Septi Perwitasari, Takuo Tsuda and Nozomu Nishitani
    Citation: Earth, Planets and Space 2022 74:106
  12. Responding to the ever-growing demand for environmental information, the National Oceanic and Atmospheric Administration (NOAA) seeks to enter into contracts to purchase Global Navigation Satellite System (GNS...

    Authors: Hyeyeon Chang, Jiyun Lee, Hyosang Yoon, Y. Jade Morton and Alex Saltman
    Citation: Earth, Planets and Space 2022 74:108
  13. Santiaguito, Guatemala, represents one of the best cases of active lava dome complex in the world, producing lava flow effusion, weak explosive activity, and cycles of lava dome extrusion over varying timescal...

    Authors: Silvia Massaro, Antonio Costa, Roberto Sulpizio, Diego Coppola and Anatoly Soloviev
    Citation: Earth, Planets and Space 2022 74:107
  14. The Japanese meteorological satellite Himawari-8 has captured the Earth’s atmosphere and stars, planets, and the Moon in its field of view, enabling us to capture their spectroscopy with 16 bands from visible ...

    Authors: Gaku Nishiyama, Noriyuki Namiki, Seiji Sugita and Shinsuke Uno
    Citation: Earth, Planets and Space 2022 74:105
  15. Ocean-bottom pressure gauges of wide and dense ocean-bottom observation networks around Japan, S-net and DONET, observed ocean waves caused by the Tonga eruption that started at approximately 13:00 JST (UTC + ...

    Authors: Hisahiko Kubo, Tatsuya Kubota, Wataru Suzuki, Shin Aoi, Osamu Sandanbata, Naotaka Chikasada and Hideki Ueda
    Citation: Earth, Planets and Space 2022 74:104
  16. A strong volcanic eruption caused a clear vertical acoustic resonance between the sea surface and the thermosphere. Its effects are observed as geomagnetic and GPS-TEC oscillations near the volcano and its geo...

    Authors: Toshihiko Iyemori, Michi Nishioka, Yuichi Otsuka and Atsuki Shinbori
    Citation: Earth, Planets and Space 2022 74:103
  17. In this study, the variability of the migrating solar diurnal (DW1) tide in the mesosphere-lower thermosphere (MLT) region during Northern and Southern Hemisphere (NH & SH) Sudden Stratospheric Warmings (SSWs)...

    Authors: Tarique A. Siddiqui, Jorge L. Chau, Claudia Stolle and Yosuke Yamazaki
    Citation: Earth, Planets and Space 2022 74:101
  18. Combining two meteor radar observations at mid-latitudes and MERRA2 reanalysis data, we report an extraordinary quasi-16-day wave (Q16DW) activity in the mesosphere and lower thermosphere (MLT) from about Octo...

    Authors: Xiansi Huang, Kaiming Huang, Shaodong Zhang, Chunming Huang, Yun Gong and Hao Cheng
    Citation: Earth, Planets and Space 2022 74:98
  19. Earth’s crust responds to perturbations from various environmental factors. To evaluate this response, seismic velocity changes offer an indirect diagnostic, especially where velocity can be monitored on an on...

    Authors: Rezkia Dewi Andajani, Takeshi Tsuji, Roel Snieder and Tatsunori Ikeda
    Citation: Earth, Planets and Space 2022 74:97
  20. Research interest in the Kinki region, southwestern Japan, has been aroused by the frequent occurrence of microearthquake activity that do not always coincide with documented active fault locations. Previous s...

    Authors: Bokani Nthaba, Tatsunori Ikeda, Hiro Nimiya, Takeshi Tsuji and Yoshihisa Iio
    Citation: Earth, Planets and Space 2022 74:96
  21. The Hakodate Plain in the southern part of the Oshima Peninsula, Hokkaido, Japan, is a sedimentary basin surrounded by mountains. The vertical displacements caused by active faults along the western margin of ...

    Authors: Kimiyuki Asano, Tomotaka Iwata, Kunikazu Yoshida, Naoto Inoue, Kazuhiro Somei, Ken Miyakoshi and Michihiro Ohori
    Citation: Earth, Planets and Space 2022 74:94
  22. 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
  23. The S-wave velocity (Vs) structure of sediments and the uppermost crust in the landward slope of a subduction zone are important for determining the dynamics of the overriding plate. Although distributed acoustic...

    Authors: Shun Fukushima, Masanao Shinohara, Kiwamu Nishida, Akiko Takeo, Tomoaki Yamada and Kiyoshi Yomogida
    Citation: Earth, Planets and Space 2022 74:92
  24.  The responses of two High-Intensity Long-Duration Continuous AE Activity (HILDCAA) events are investigated using solar wind observations at L1, magnetospheric measurements at geosynchronous orbit, and changes...

    Authors: Diptiranjan Rout, Ram Singh, K. Pandey, T. K. Pant, C. Stolle, D. Chakrabarty, S. Thampi and T. Bag
    Citation: Earth, Planets and Space 2022 74:91
  25. 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
  26. 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
  27. 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
  28. 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
  29. 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
  30. 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
  31. 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
  32. 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
  33. 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

  34. 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
  35. 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
  36. 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
  37. 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
  38. 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

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