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201 result(s) for '"Express Letter"' within Earth, Planets and Space

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  1. Deep low-frequency (DLF) earthquakes have occurred at depths of 10–30 km in the Kirishima volcanic complex, Japan. Here, we investigate the DLF earthquake activity that was associated with the 2018 eruptions, ...

    Authors: Ryo Kurihara and Aitaro Kato
    Citation: Earth, Planets and Space 2022 74:174
  2. The shapes of regolith particles on airless bodies, such as the Moon and asteroids, are important to understand their formation and evolution on surfaces. Limited studies have shown that the three-dimensional ...

    Authors: Akira Tsuchiyama, Takashi Sakurama, Tsukasa Nakano, Kentaro Uesugi, Makiko Ohtake, Takashi Matsushima, Kazuo Terakado and Erik M. Galimov
    Citation: Earth, Planets and Space 2022 74:172
  3. Meteotsunamis (forced waves) triggered by atmospheric disturbances of Lamb waves due to the 2022 Hunga–Tonga volcanic eruption have been observed in coastal areas surrounding the Pacific Ocean. However, the sp...

    Authors: Takashi Tonegawa and Yoshio Fukao
    Citation: Earth, Planets and Space 2022 74:159
  4. The feeding system of magmatic fluid from the volcanic root to a shallow magma reservoir remains a poorly understood issue. Seismic events, including volcanic tremors and low-frequency earthquakes, in a deep p...

    Authors: Yohei Yukutake, Ryou Honda, Motoo Ukawa and Kei Kurita
    Citation: Earth, Planets and Space 2022 74:144
  5. Emergency responses during a massive tsunami disaster require information on the flow depth of land for rescue operations. This study aims to predict tsunami flow depth distribution in real time using regressi...

    Authors: Masato Kamiya, Yasuhiko Igarashi, Masato Okada and Toshitaka Baba
    Citation: Earth, Planets and Space 2022 74:127
  6. 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
  7. 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
  8. 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
  9. 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
  10.  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
  11. 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
  12. 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
  13. 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
  14. 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
  15. 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
  16. 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
  17. 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
  18. 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
  19. 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
  20. We modeled the vertical deformation detected from a leveling survey in Jigokudani valley, Tateyama volcano, central Japan. In Jigokudani valley, uplift of 4 cm/year was previously detected during the period fr...

    Authors: Kohei Hotta, Shigekazu Kusumoto, Hidenori Takahashi and Yuichi S. Hayakawa
    Citation: Earth, Planets and Space 2022 74:32
  21. We applied reverse time migration (RTM) to offshore wide-angle seismic data acquired with airgun shots and sparsely deployed ocean bottom seismographs (OBSs) for reflection imaging of the Moho discontinuity in...

    Authors: Kazuya Shiraishi, Tetsuo No and Gou Fujie
    Citation: Earth, Planets and Space 2022 74:28
  22. Monitoring of crustal deformation provides essential information for seismology and volcanology. For such earth science fields and other purposes, various Global Navigation Satellite System (GNSS) networks hav...

    Authors: Yusaku Ohta and Mako Ohzono
    Citation: Earth, Planets and Space 2022 74:25
  23. We estimate the hypocenter locations and the centroid moment tensor solutions of the shallow very-low-frequency earthquake (sVLFE) activity that occurred in the Kumano-nada region of the Nankai Trough megathru...

    Authors: Yojiro Yamamoto, Keisuke Ariyoshi, Shuichiro Yada, Masaru Nakano and Takane Hori
    Citation: Earth, Planets and Space 2022 74:14
  24. Wave–particle interactions are fundamental processes in space plasma, and some plasma waves, including electrostatic solitary waves (ESWs), are recognised as broadband noises (BBNs) in the electric field spect...

    Authors: Masaki N. Nishino, Yoshiya Kasahara, Yuki Harada, Yoshifumi Saito, Hideo Tsunakawa, Atsushi Kumamoto, Shoichiro Yokota, Futoshi Takahashi, Masaki Matsushima, Hidetoshi Shibuya, Hisayoshi Shimizu, Yukinaga Miyashita, Yoshitaka Goto and Takayuki Ono
    Citation: Earth, Planets and Space 2022 74:9
  25. We performed zircon U–Pb dating on the Pliocene Tanigawa-dake granites (Makihata and Tanigawa bodies) and the Cretaceous Minakami quartzdiorite, Northeast Japan Arc. Concordia ages were estimated to be 3.95 ± ...

    Authors: Saki Minami, Mitsuhiro Nagata, Shigeru Sueoka, Shoma Fukuda, Yuya Kajita, Yasuhiro Ogita, Saya Kagami, Tatsunori Yokoyama and Takahiro Tagami
    Citation: Earth, Planets and Space 2021 73:231

    The Correction to this article has been published in Earth, Planets and Space 2022 74:129

  26. Ocean bottom electromagnetometers (OBEMs) installed on the seafloor around Nishinoshima Island (Bonin Islands) were missing after a December volcanic eruption. In February 2021, one was found on a beach on Iri...

    Authors: Noriko Tada, Haruka Nishikawa, Hiroshi Ichihara, Hiromi Kayama Watanabe and Tatsu Kuwatani
    Citation: Earth, Planets and Space 2021 73:224
  27. Dynamic earthquake rupture causes mass redistribution around the fault, and the emitted propagating seismic waves are accompanied by bulk density perturbations. Both processes cause transient gravity changes p...

    Authors: Masaya Kimura, Nobuki Kame, Shingo Watada, Akito Araya, Takashi Kunugi and Rongjiang Wang
    Citation: Earth, Planets and Space 2021 73:223
  28. Small-scale seismic velocity heterogeneity has been studied through the calculation of peak amplitude ratio as a means to quantify the strength of seismic wave scattering at volcanoes in Japan. This ratio is d...

    Authors: Gugi Ganefianto, Hisashi Nakahara and Takeshi Nishimura
    Citation: Earth, Planets and Space 2021 73:207
  29. The southern part of the Ryukyu subduction zone has recorded tsunami events with a recurrence interval of several hundred years. Although their source is controversial, one model suggests that the last 1771 Ya...

    Authors: Masayuki Kano, Aoi Ikeuchi, Takuya Nishimura, Shin’ichi Miyazaki and Takeshi Matsushima
    Citation: Earth, Planets and Space 2021 73:199
  30. We describe the way a global model of the geomagnetic field has been built using vector field data acquired by the absolute scalar magnetometers (ASM) running in vector mode on board the Alpha and Bravo satell...

    Authors: Pierre Vigneron, Gauthier Hulot, Jean-Michel Léger and Thomas Jager
    Citation: Earth, Planets and Space 2021 73:197
  31. The study of slow earthquake activity, which occurs in the shallow and deep sides of seismogenic zone, is crucial for understanding subduction zones, including variations in frictional properties with depth an...

    Authors: Yusuke Yamashita, Masanao Shinohara and Tomoaki Yamada
    Citation: Earth, Planets and Space 2021 73:196
  32. The Median Tectonic Line (MTL) is a thousand-kilometer-long fault that extends across southwest Japan. Near the Nyugawa region of Shikoku, the MTL comprises (i) a low-angle inactive terrane boundary fault (the MT...

    Authors: Masahiro Miyawaki and Arito Sakaguchi
    Citation: Earth, Planets and Space 2021 73:194
  33. Oxygen is a potential biosignature for terrestrial Earth-like planets. The primary source of oxygen on Earth is oxygenic photosynthesis, which may be limited by the supply of riverine phosphorus. Therefore, ph...

    Authors: Yasuto Watanabe and Eiichi Tajika
    Citation: Earth, Planets and Space 2021 73:188
  34. Low-frequency tremors have been widely detected in many tectonic zones, and are often located adjacent to megathrust zones, indicating that their spatiotemporal evolution provides important insights into megat...

    Authors: Hidenobu Takahashi, Kazuya Tateiwa, Keisuke Yano and Masayuki Kano
    Citation: Earth, Planets and Space 2021 73:186
  35. A volcanic eruption transmits both seismic and infrasound signals. The seismo-acoustic power ratio is widely used to investigate the eruption behaviors and the source dynamics. It is often the case that seismi...

    Authors: Mie Ichihara, Kazuya Yamakawa and Dan Muramatsu
    Citation: Earth, Planets and Space 2021 73:180
  36. We investigated changes in the b value of the Gutenberg–Richter’s law in and around the focal areas of earthquakes on March 20 and on May 1, 2021, with magnitude (M) 6.9 and 6.8, respectively, which occurred off ...

    Authors: K. Z. Nanjo and A. Yoshida
    Citation: Earth, Planets and Space 2021 73:176
  37. Here we investigate the influence of the lithology and thermal state of the upper crust on earthquake distributions beneath the Wakayama region, southern Honshu, Japan, to better understand the influence of cr...

    Authors: Sumire Maeda, Shinji Toda, Toru Matsuzawa, Makoto Otsubo and Takumi Matsumoto
    Citation: Earth, Planets and Space 2021 73:173

    The Correction to this article has been published in Earth, Planets and Space 2021 73:205

  38. Subvolcanic hydrothermal systems can lead to hydrothermal eruptions as well as unrest phenomena without an eruptive event. Historical eruptions and recent unrest events, including ground inflation, demagnetiza...

    Authors: Ryo Tanaka, Yusuke Yamaya, Makoto Tamura, Takeshi Hashimoto, Noritoshi Okazaki, Ryo Takahashi and Toru Mogi
    Citation: Earth, Planets and Space 2021 73:172
  39. Newly analysed titanomagnetite–ilmenite (Tim–Ilm) intergrowths from Martian nakhlite meteorite Northwest Africa (NWA) 5790 yielded crystallisation temperature up to 1032 °C and oxygen fugacity (fO2) up to ΔQFM + ...

    Authors: Zilong Wang, Wei Tian and Yankun Di
    Citation: Earth, Planets and Space 2021 73:164
  40. Investigations of the co- and postseismic processes of the 2011 Tohoku-oki earthquake provide essential information on the seismic cycle in the Japan Trench. Although almost all of the source region lies benea...

    Authors: Shun-ichi Watanabe, Tadashi Ishikawa, Yuto Nakamura and Yusuke Yokota
    Citation: Earth, Planets and Space 2021 73:162
  41. Reconstructing the history of Philippine Sea (PHS) plate motion is important for better understanding of the tectonics of the surrounding plates. It is generally considered that the PHS plate migrated northwar...

    Authors: Toshitsugu Yamazaki, Shun Chiyonobu, Osamu Ishizuka, Fumisato Tajima, Naoki Uto and Shinichi Takagawa
    Citation: Earth, Planets and Space 2021 73:161

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