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Katsumi Hattori

Professor

Chiba University

Japan

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Professor Katsumi Hattori is a faculty member at Chiba University, Japan. His research focuses on seismic hazard assessment, geomagnetic storms, and their relation to earthquakes, as evidenced by his recent publications on b -value evaluation, Doppler frequency shifts, and ionospheric anomalies. He also studies seasonal variations of the Sq current system and the impact of geomagnetic processes on seismic activity.

Articles (21)

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2020

Collaborators (3)

Jaroslav Urbar

Researcher

Institute of Atmospheric Physics, Czech Academy of Sciences

CZECH REPUBLIC

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Peng Han

Southern University of Science and Technology (SUSTech)

CHINA

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Rui Song

Assistant Professor

Chiba University

JAPAN

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Katsumi Hattori

Research Interests

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About

Articles (21)

The pre-earthquake ionospheric anomalies and the possible coupling mechanism related to the M8.8 Kamchatka earthquake occurred on July 29, 2025

Seismo‐ and Tsunami‐Traveling Ionospheric Disturbances of the 29 July 2025 M8.8 Kamchatka Earthquake Observed by CW‐HF Doppler Sounding Systems and Ionosondes in Taiwan and Japan

<i>b</i>-Value Evaluation and Applications to Seismic Hazard Assessment

Doppler Frequency Shifts Associated With the 18 September 2022 M6.8 Taitung Earthquake Observed by Local CW‐HF Doppler Sounding Systems in Taiwan

On Solar‐Terrestrial Interactions: Correlation Between Intense Geomagnetic Storms and Global Strong Earthquakes

North‐South Asymmetry of Sq Variations at Geomagnetically Conjugate Area

A Numerical Consideration on the Correlation Between Magnitude of Earthquakes and Current Intensity Causing ULF Electromagnetic Wave Emission

Spatial analyses on pre-earthquake ionospheric anomalies and magnetic storms observed by China seismo-electromagnetic satellite in August 2018

Seasonal Variations of Sq Current System in Different Longitudinal Sectors and Solar Activities

Ultralow-Frequency Geomagnetic Signal Estimation: An Interstation Transfer Function Method Based on Multivariate Wavelet Coherence

Magnetic Field Signatures of Tropospheric and Thermospheric Lamb Modes Triggered by the 15 January 2022 Tonga Volcanic Eruption

Recent Advances and Challenges in the Seismo-Electromagnetic Study: A Brief Review

The Two‐Dimensional and Three‐Dimensional Structures Concerning the Traveling Ionospheric Disturbances Over Japan Caused by Typhoon Faxai

Temporal Variation of b Value with Statistical Test in Wenchuan Area, China Prior to the 2008 Wenchuan Earthquake

The three-dimensional ionospheric electron density imaging in Japan using the approximate Kalman filter algorithm

Detecting the Ionospheric Disturbances in Japan Using the Three‐Dimensional Computerized Tomography

Seasonal Variation Characteristics of Geomagnetic Sq External and Internal Equivalent Current Systems in East‐Asia and Oceania Regions

Evaluation of Pre-Earthquake Anomalies of Borehole Strain Network by Using Receiver Operating Characteristic Curve

Statistical Correlation Analysis Between Thermal Infrared Anomalies Observed From MTSATs and Large Earthquakes Occurred in Japan (2005–2015)

Borehole Strain Observations Based on a State-Space Model and ApNe Analysis Associated With the 2013 Lushan Earthquake

A Statistical Study of the Correlation between Geomagnetic Storms and M ≥ 7.0 Global Earthquakes during 1957–2020

Collaborators (3)

Jaroslav Urbar

Peng Han

Rui Song

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