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Earthquake Science 2017年第4期30卷 165-166页

作者： Xuemin Zhang katsumi hattori Valerio Tramutoli Institute of Earthquake Forecasting China Earthquake AdministrationBeijing 100036China Graduate School of Science Chiba University1-33YayoiInageChiba 263-8522Japan Engineering School(SI) University of Bailicata-Via Dell'Ateneo Lucano10-85100 PotenzaItaly

EMSEV, Electromagnetic Studies of Earthquake and Volcanoes, set up in 2002, is a joint academic organization by multi-associations in IUGG （International Union of Geodesy and Geophysics）, including IAGA （International Association of Geomagnetism and Aeronomy）, IASPEI （International Association of Seismology and Physics of the Earth＇s Interior）, IAVCEI （International Association of Volcanology and Chemistry of the Earth＇s Interior）.

关键词： In Preface to the special issue on electromagnetic phenomena related to seismic and volcanic activities from EMSEV in 2016

The ultra-low-frequency magnetic disturbances associated with earthquakes

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Earthquake Science 2011年第6期24卷 523-534页

作者： Masashi Hayakawa Yasuhide Hobara Kenji Ohta katsumi hattori Advanced Wireless Communications Research Center The University of Electro-Communications1-5-1 ChofugaokaChofu Tokyo 182-8585Japan Research Station on Seismo Electromagnetics The University of Electro-Communications1-5-1 ChofugaokaChofu Tokyo 182-8585Japan Hayakawa Institute of Seismo Electromagnetics Co.Ltd.Incubation Center The University of Electro-Communications Chofu Tokyo182-8585Japan Information Systems Corp. Earthquake Analysis LaboratoryKita-Aoyama 2-14-42-305Minato-ku Tokyo 107-0061Japan Graduate School of Informatics and Engineering The University of Electro-CommunicationsChofu Tokyo 182-8585Japan Department of Electronic Information Chubu University1200 Matsumoto-choKasugai Aichi 487-8501Japan Faculty of Science Chiba University1-33 YayoiInage Chiba 263-8522Japan

The ultra-low-frequency （ULF） electromagnetic emission is recently recognized as one of the most promising candidates for short-term earthquake （EQ） prediction. This paper reviews previous convincing evidence on the presence of ULF emissions before three major EQs. Then, we present further statistical study on the ULF occurrence, our networks of ULF monitoring in different spatial scales in Japan and finally we present several signal processings to identify the seismogenic emissions by showing latest results for recent large EQs.

关键词： seismogenic ULF emission earthquake prediction magnetic sensor signal processing

Challenge to Electromagnetic Approach to Short-term Earthquake Prediction

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Challenge to Electromagnetic Approach to Short-term Earthqua...

中国地球物理学会第二十六届年会、中国地震学会第十三次学术大会

作者： katsumi hattori Graduate School of Science Chiba University 1-33YayoiInageChiba 263 - 8522Japan

Short-term prediction has not been achieved despite its importance and many years of *** the importance of recently reported electromagnetic precursors to crustal activities,our project aims ata systematic research on... 详细信息

关键词： Challenge to Electromagnetic Approach to Short-term Earthquake Prediction

Aging-induced memory loss due to decreased N1-acetyl-5-methoxykynuramine,a melatonin metabolite,in the hippocampus:a potential prophylactic agent for dementia

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Neural Regeneration Research 2025年第6期20卷 1705-1706页

作者： Kazuki Watanabe Atsuhiko hattori Department of Immunobiology Institute of Development Aging and CancerTohoku UniversitySendaiMiyagiJapan Department of Sport and Wellness College of Sport and WellnessRikkyo UniversityNiizaSaitamaJapan

Melatonin(N-acetyl-5-methoxytryptamine)is known as the hormone of darkness because it is synthesized at night and involved in regulating the circadian *** hormone is primarily synthesized by the vertebrate pineal gland,but is ubiquitous among invertebrates,unicellular organisms,plants,and even cyanobacteria(hattori and Suzuki,2024).Melatonin is well-conserved evolutionarily and possesses several physiological functions,such as immune response,bone and glucose metabolism,and memory formation besides regulating the circadian rhythm.

关键词： metabolism primarily agent

Strong coupling and catenary field enhancement in the hybrid plasmonic metamaterial cavity and TMDC monolayers

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Opto-Electronic Advances 2024年第5期7卷 20-32页

作者： Andergachew Mekonnen Berhe Khalil As’ham Ibrahim Al-Ani Haroldo T.hattori Andrey E.Miroshnichenko School of Engineering and Technology University of New South Wales at CanberraNorthcott DriveCanberra ACT 2610Australia

Strong coupling between resonantly matched surface plasmons of metals and excitons of quantum emitters results in the formation of new plasmon-exciton hybridized energy *** plasmon-exciton strong coupling,plasmonic nanocavities play a significant role due to their ability to confine light in an ultrasmall ***,two-dimensional transition metal dichalcogenides(TMDCs) have a significant exciton binding energy and remain stable at ambient conditions,making them an excellent alternative for investigating light-matter *** a result,strong plasmon-exciton coupling has been reported by introducing a single metallic ***,single nanoparticles have lower spatial confinement of electromagnetic fields and limited tunability to match the excitonic ***,we introduce the concept of catenary-shaped optical fields induced by plasmonic metamaterial cavities to scale the strength of plasmon-exciton *** demonstrated plasmon modes of metallic metamaterial cavities offer high confinement and tunability and can match with the excitons of TMDCs to exhibit a strong coupling regime by tuning either the size of the cavity gap or *** calculated Rabi splitting of Au-MoSe_2 and Au-WSe_2 heterostructures strongly depends on the catenary-like field enhancement induced by the Au cavity,resulting in room-temperature Rabi splitting ranging between 77.86 and 320 me *** plasmonic metamaterial cavities can pave the way for manipulating excitons in TMDCs and operating active nanophotonic devices at ambient temperature.

关键词： catenary-shaped field enhancement strong coupling plasmon exciton Rabi splitting

Identification of ULF Emissions for Izu Islands Earthquakes in July 2000

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Identification of ULF Emissions for Izu Islands Earthquakes ...

2003年亚太地区环境电磁学学术会议

作者： Kaoru Gotoh katsumi hattori Masashi Hayakawa Univ. of Electro-Communications 1-5-1 Chofugaka ChofuTokyo JAPAN Chiba University 1-33 Yayoi-cho Inage Chiba JAPAN Univ. of Electro-Communications 1-5-1 Chofugaka Chofu Tokyo JAPAN

＜正＞ The purpose of this report is to find out any ULF signature for the earthquakes in Izu islands in July 2000 （associated with volcanic activity） by means of a new signal processing method. The ULF data observed at closely-spaced three stations in Izu peninsula, are subjected to the principal component analysis （PCA）, and we have found that this PCA is very effective in distinguishing among different sources of ULF emissions （geomagnetic variation, man-made noise, and seismogenic emission）. While, the first and second principal components are found to be associated with geomagnetic variation and man-made activity, respectively, the third principal component （residual noise like seismogenic emission if it exists） at night has indicated a significant temporal evolution;an enhancement for about 1.5 months （from early May to middle June） and a conspicuous minimum about ten days before the first earthquake on July 1 （magnitude 6.4）, followed by a sharp increase a few days before the quakes. Furthermore, this component is found to be back to the background level a few months later than the quakes. This temporal pattern is in good agreement with those for previous large earthquake （Spitak, Loma Prieta, Guam and Biak earthquakes）, so that this temporal evolution for the third principal component found by PCA is likely to be a precursory ULF signature of those Izu islands earthquakes with its intensity of the order of 5% of the first principal component.

关键词： seismo-ULF emission Izu islands earthquakes principal component analysis (PCA)

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地磁场变化的主成分分析（英文）

地磁场变化的主成分分析（英文）

2019年中国地球科学联合学术年会

作者： Peng Han Yuanyuan Zhou katsumi hattori 南方科技大学澳门大学千叶大学

To investigate possible geomagnetic field changes associated with the 2011 Tohoku earthquake (Mw 9.0), a principal component analysis (PCA) was employed to analyze the geomagnetic data registered at 15 stations in Japan for the time interval from 2000 to 2015. The PCs derived from high quality data of three JMA observatories are taken as

关键词：地磁场变化主成分分析

2000年日本伊豆群发地震与火山活动期间的电磁变化

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2000年日本伊豆群发地震与火山活动期间的电磁变化

中国地球物理学会第二十届年会

作者：黄清华杜爱民 hattori,katsumi 北京大学地球与空间科学学院地球物理学系中国科学院地质与地球物理研究所 Marine Biosystems Research Center Chiba UniversityChiba 263-8522Japan

＜正＞2000年6月-8月期间,在日本伊豆（Izu）群岛地区发生了大规模的群发地震及火山活动。地震观测显示本次群发地震期间发生的地震数目比同区域过去5年中所发生的地震总数还多,释放的总能量位居伊豆群岛地区历次群发地震之首。本次群...

＜正＞2000年6月-8月期间,在日本伊豆（Izu）群岛地区发生了大规模的群发地震及火山活动。地震观测显示本次群发地震期间发生的地震数目比同区域过去5年中所发生的地震总数还多,释放的总能量位居伊豆群岛地区历次群发地震之首。本次群发地震及火山活动令三宅岛的近3000名居民被迫全体离岛避难。

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Influence of aging, mitochondrial dysfunction, and inflammation on Parkinson's disease

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Neural Regeneration Research 2024年第6期19卷 1197-1198页

作者： Davide Cossu Nobutaka Hatiori Department of Neurology Juntendo University Department of Biomedical Sciences Sassari University

Aging is associated with chronic form of inflammation called inflammaging,which results from immune system *** plays a crucial role in the pathogenesis of various neurodegenerative diseases(Dabravolski et al.,2022).Mo...

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Anomalous behaviors of geomagnetic diurnal variations prior to the 2011 Tohoku earthquake （Mw9.0）

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Anomalous behaviors of geomagnetic diurnal variations prior ...

中国地球物理学会第二十九届年会

作者： Guangjing Xu Peng Han Qinghua Huang katsumi hattori Department of Geophysics School of Earth and Space Sciences Peking University Graduate School of Science Chiba University

＜正＞Many previous investigations suggested that the ultra-low-frequency （ULF, up to 30Hz） is a prospective band for the search for earthquake precursory signatures （hattori, et al., 2013）. Some study also indicated that the diurnal magnetic variations may be disturbed by large earthquakes （Duma et al., 2003）. In this study,

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