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This research aims to investigate the dynamic characteristics of the 1984 Nagano earthquake and its impact on structures.

April 1, 2026Open Access

Dynamic Characteristics and Damage to Structures of the Earthquake at the Western Part of Nagano Prefecture in 1984

Puntos clave

This research aims to investigate the dynamic characteristics of the 1984 Nagano earthquake and its impact on structures.
Investigated the seismic events of the earthquake in Nagano Prefecture.
Analyzed tombstone deformation as a measure of ground motion effects.
Measured aftershocks and microtremors to understand seismic activity patterns.
Identified significant structural damage related to ground motion characteristics.
Established a correlation between earthquake dynamics and damage patterns through detailed measurements.
Documented large-scale debris avalanches and slope failures as consequences of the earthquake.

Resumen

The Earthquake at the Western Part of Nagano Prefecture on September 14, 1984 with magnitude 6.8 on Richter scale occurred near Otaki Village in Kiso District(137.5°E,35.B°N). The earthquake caused the debris avalanches and the slope failures in a large scale. The present paper deals with dynamic characteristics of this earthquake and the damage to structures due to ground motion itself. Through the investigation of tombstone over/um and measurements of aftershocks and microtremors, the authors estimate the dynamic characteristics of mainshock and study the correlation between the damage to structures and characteristics of the ground motion.

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Cite This Study

北浦 et al. (Wed,) studied this question.

synapsesocial.com/papers/69cd7ae65652765b073a87d5 https://doi.org/https://doi.org/10.24517/00065284

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