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

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  1. An earthquake of JMA magnitude 6.5 (foreshock) hit Kumamoto Prefecture, Japan, at 21:26 JST on April 14, 2016. Subsequently, an earthquake of JMA magnitude 7.3 (main shock) hit Kumamoto and Oita Prefectures a...

    Authors: Yoshiya Hata, Masayuki Yoshimi, Hiroyuki Goto, Takashi Hosoya, Hitoshi Morikawa and Takao Kagawa

    Citation: Earth, Planets and Space 2017 69:72

    Content type: Express Letter

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    The Retraction Note to this article has been published in Earth, Planets and Space 2019 71:61

  2. Allan variances and its related methods are commonly used to analyse a sequence of data in the time domain to measure frequency stability of oscillators. It allows for a determination of noise type as a functi...

    Authors: Kamil Maciuk, Jacek Kudrys, Mohammad Bagherbandi and Igor V. Bezmenov

    Citation: Earth, Planets and Space 2020 72:186

    Content type: Express Letter

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  3. The International Geomagnetic Reference Field (IGRF) model is a combination of the several models developed by independent groups of scientists using different approaches for the selection of input data and me...

    Authors: Valeriy G. Petrov and Tatyana N. Bondar

    Citation: Earth, Planets and Space 2021 73:46

    Content type: Express Letter

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  4. To improve our understanding of the long-term behavior of low-frequency earthquakes (LFEs) along the tremor belt of the Nankai subduction zone, we applied a matched filter technique to continuous seismic data ...

    Authors: Aitaro Kato and Shigeki Nakagawa

    Citation: Earth, Planets and Space 2020 72:128

    Content type: Express Letter

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  5. The Iwo-yama volcano of the Kirishima Volcanic Complex in Japan had a small phreatic eruption in April 2018, which newly formed multiple vents. The activity was recorded by two infrasound sensors and two monit...

    Authors: Dan Muramatsu, Takeshi Matsushima and Mie Ichihara

    Citation: Earth, Planets and Space 2021 73:8

    Content type: Express Letter

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  6. In this study, we investigate the source rupture process of the 2018 Hokkaido Eastern Iburi earthquake in Japan (MJMA 6.7) and how the ground motion can be reproduced using available source and velocity models. F...

    Authors: Hisahiko Kubo, Asako Iwaki, Wataru Suzuki, Shin Aoi and Haruko Sekiguchi

    Citation: Earth, Planets and Space 2020 72:20

    Content type: Express Letter

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  7. We determined focal mechanism solutions of microearthquakes and examined the stress field in the low-seismicity region from southern Hokkaido to eastern Aomori, NE Japan. The stress fields determined in this s...

    Authors: Sumire Maeda, Toru Matsuzawa, Tomomi Okada, Hiroshi Katao, Takeyoshi Yoshida, Masahiro Kosuga and Makoto Otsubo

    Citation: Earth, Planets and Space 2020 72:117

    Content type: Express Letter

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  8. The Global Navigation Satellite System network in Japan detected transient crustal deformation along the Nankai trough, Japan, from June 2018. Time-dependent inversion analysis shows that a long-term slow slip...

    Authors: Shinzaburo Ozawa, Ryouji Kawabata, Kensuke Kokado and Hiroshi Yarai

    Citation: Earth, Planets and Space 2020 72:61

    Content type: Express Letter

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  9. Distributed acoustic sensing (DAS) is a new method that measures the strain change along a fiber-optic cable and has emerged as a promising geophysical application across a wide range of research and monitorin...

    Authors: Satoshi Ide, Eiichiro Araki and Hiroyuki Matsumoto

    Citation: Earth, Planets and Space 2021 73:63

    Content type: Express Letter

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  10. Reductive dissolution of magnetite is known to occur below the Fe-redox boundary in sediments. In this study, detailed processes associated with biogenic magnetite dissolution are documented. A sediment core f...

    Authors: Toshitsugu Yamazaki

    Citation: Earth, Planets and Space 2020 72:150

    Content type: Express Letter

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  11. 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

    Content type: Express Letter

    Published on:

  12. On January 23, 2018, a small phreatic eruption (VEI = 1) occurred at the Motoshirane Pyroclastic Cone Group in the southern part of Kusatsu-Shirane Volcano in central Japan. The eruption ejected ash, lapillus,...

    Authors: Nobuko Kametani, Yasuo Ishizaki, Mitsuhiro Yoshimoto, Fukashi Maeno, Akihiko Terada, Ryuta Furukawa, Ryo Honda, Yoshihiro Ishizuka, Jiro Komori, Masashi Nagai and Shinji Takarada

    Citation: Earth, Planets and Space 2021 73:141

    Content type: Express Letter

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  13. Nonlinearities in space and astrophysical plasmas generate a set of magnetic filaments or bundles that have an incompressible sense of fluctuations and propagate highly obliquely to the mean magnetic field. Th...

    Authors: Horia Comişel, Yasuhito Narita and Uwe Motschmann

    Citation: Earth, Planets and Space 2020 72:32

    Content type: Express Letter

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  14. 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

    Content type: Express Letter

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

  15. Late Quaternary tectonic deformation of coastal areas is usually examined based on the height distribution of paleo-shorelines observed on marine terraces. However, it is difficult to examine deformation along...

    Authors: Hideaki Goto

    Citation: Earth, Planets and Space 2021 73:75

    Content type: Express Letter

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  16. We investigated the relationship between contractional deformation of sedimentary mass in the upper crust and the geodetic strain rate in a high-strain zone (part of the Niigata–Kobe Tectonic Zone) of the mid-...

    Authors: Makoto Otsubo, Ikuo Katayama, Ayumu Miyakawa and Takeshi Sagiya

    Citation: Earth, Planets and Space 2020 72:30

    Content type: Express Letter

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  17. For more than 30 years, a two-step mechanism was used to explain observed Atmospheric band emission (762 nm) in mesopause region. A new mechanism, which leads to the formation of electronically excited molecul...

    Authors: Mykhaylo Grygalashvyly and Gerd Reinhold Sonnemann

    Citation: Earth, Planets and Space 2020 72:187

    Content type: Express Letter

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  18. To clarify the relationship between earthquake occurrence and fluid, we analyzed data from a dense aftershock-observation network with 69 high-gain short-period seismographs installed immediately after the mai...

    Authors: Yoshihisa Iio, Satoshi Matsumoto, Yusuke Yamashita, Shin’ichi Sakai, Kazuhide Tomisaka, Masayo Sawada, Takashi Iidaka, Takaya Iwasaki, Megumi Kamizono, Hiroshi Katao, Aitaro Kato, Eiji Kurashimo, Yoshiko Teguri, Hiroo Tsuda and Takashi Ueno

    Citation: Earth, Planets and Space 2020 72:42

    Content type: Express Letter

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  19. 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

    Content type: Express Letter

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  20. 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

    Content type: Express Letter

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  21. A phreatic eruption suddenly occurred at Motoshirane (Kusatsu-Shirane volcano, Japan) at 10:02 JST on January 23, 2018. A member of the Japan Self-Defense Force was killed by volcanic blocks during training in...

    Authors: Eiichi Sato

    Citation: Earth, Planets and Space 2021 73:117

    Content type: Express Letter

    Published on:

    The Correction to this article has been published in Earth, Planets and Space 2021 73:128

  22. Several laboratory experimental studies of photoemission characteristics of rocks as they fracture have been conducted to elucidate the mechanism of earthquake lightning (EQL). In most of these studies, granit...

    Authors: Yuji Enomoto, Tsuneaki Yamabe, Kazuyuki Mizuhara, Shigeki Sugiura and Hitoshi Kondo

    Citation: Earth, Planets and Space 2020 72:108

    Content type: Express Letter

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  23. Six wells were continuously monitored in Hokkaido, northern Japan, to relate groundwater level changes to regional seismic activity. Groundwater level changes following the 2018 Hokkaido Eastern Iburi earthqua...

    Authors: Tomo Shibata, Ryo Takahashi, Hiroaki Takahashi, Takanori Kagoshima, Naoto Takahata, Yuji Sano and Daniele L. Pinti

    Citation: Earth, Planets and Space 2020 72:23

    Content type: Express Letter

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  24. We present first results for the determination of UT1-UTC using the VLBI Global Observing System (VGOS). During December 2019 through February 2020, a series of 1 h long observing sessions were performed using...

    Authors: Rüdiger Haas, Eskil Varenius, Saho Matsumoto and Matthias Schartner

    Citation: Earth, Planets and Space 2021 73:78

    Content type: Express Letter

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  25. A volcanic ash eruption began on March 1, 2018, and a lava flow was observed on March 6 at Shinmoedake volcano in the Kirishima Volcano Group. The small ash eruptions continued until June 27, 2018. The amounts...

    Authors: Yasuhisa Tajima

    Citation: Earth, Planets and Space 2021 73:156

    Content type: Express Letter

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  26. We present here an analysis of the destructive Mw 6.2 earthquake sequence that took place on 14 January 2021 in Mamuju–Majene, West Sulawesi, Indonesia. Our relocated foreshocks, mainshock, and aftershocks and...

    Authors: Pepen Supendi, Mohamad Ramdhan, Priyobudi, Dimas Sianipar, Adhi Wibowo, Mohamad Taufik Gunawan, Supriyanto Rohadi, Nelly Florida Riama, Daryono, Bambang Setiyo Prayitno, Jaya Murjaya, Dwikorita Karnawati, Irwan Meilano, Nicholas Rawlinson, Sri Widiyantoro, Andri Dian Nugraha…

    Citation: Earth, Planets and Space 2021 73:106

    Content type: Express Letter

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  27. Using a whole atmosphere–ionosphere coupled model GAIA (ground-to-topside model of atmosphere and ionosphere), we have investigated which parameters mainly control day-to-day variation of vertical plasma drift...

    Authors: Priyanka Ghosh, Yuichi Otsuka, Sivakandan Mani and Hiroyuki Shinagawa

    Citation: Earth, Planets and Space 2020 72:93

    Content type: Express Letter

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  28. 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

    Content type: Express Letter

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  29. 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

    Content type: Express Letter

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  30. 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

    Content type: Express Letter

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  31. The east–west component of magnetic field variation (∆D-component) at Davao station (Philippines, geomagnetic latitude: – 2.22˚N) are used to investigate the characteristics of the long-term Inter-Hemispheric Fie...

    Authors: Manjula Ranasinghe, Akiko Fujimoto, Akimasa Yoshikawa and Chandana Jayaratne

    Citation: Earth, Planets and Space 2021 73:146

    Content type: Express Letter

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  32. 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

    Content type: Express Letter

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  33. Nishinoshima is an active oceanic island arc volcano situated approximately 1000 km south of Tokyo, Japan. Since 2016, marine electromagnetic observations using ocean bottom electromagnetometers have been cond...

    Authors: Kiyoshi Baba, Noriko Tada, Hiroshi Ichihara, Yozo Hamano, Hiroko Sugioka, Takao Koyama, Akimichi Takagi and Minoru Takeo

    Citation: Earth, Planets and Space 2020 72:112

    Content type: Express Letter

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  34. We aimed to perform three-dimensional imaging of the underlying geothermal system to a depth of 2 km using magnetotellurics (MT) at around the Yugama crater, the Kusatsu–Shirane Volcano, Japan, which is known ...

    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 2020 72:161

    Content type: Express Letter

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  35. Speleothems are ideal archives of environmental magnetism and paleomagnetism, since they retain continuous magnetic signals in stable conditions and can be used for reliable radiometric dating using U-series a...

    Authors: Naoto Fukuyo, Hirokuni Oda, Yusuke Yokoyama, Geoffrey Clark and Yuhji Yamamoto

    Citation: Earth, Planets and Space 2021 73:77

    Content type: Express Letter

    Published on:

  36. In the coupled electric interaction of rock fractures and gas invasion, that is, when gases interact with newly created crack surfaces, the unpaired electrons within the rock crystal defects are thermally stim...

    Authors: Yuji Enomoto, Tsuneaki Yamabe, Shigeki Sugiura and Hitoshi Kondo

    Citation: Earth, Planets and Space 2021 73:90

    Content type: Express Letter

    Published on:

    The Correction to this article has been published in Earth, Planets and Space 2021 73:185

    The Correction to this article has been published in Earth, Planets and Space 2021 73:149

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