Estimation of the ground motion during 1923 Kanto earthquake at Hongo, Tokyo using seismogram obtained at Toksuhima

A missionary doctor in the Tokyo earthquake disaster of 1923.

Influence of Ground Motion Duration on the Structural Response at Multiple Seismic Intensity Levels

This paper aims to investigate the effects of motion duration on the structural seismic demands, seeking potential correlations between motion durations and structural responses at several seismic intensity levels. Three seismic intensity levels with 100years, 475years, and 2475years earthquake return periods (RPs) are first considered for correlation computations. Spectrally matched ground mot...

Earthquake Ground Motion

Social, not physical, infrastructure: the critical role of civil society after the 1923 Tokyo earthquake.

Despite the tremendous destruction wrought by catastrophes, social science holds few quantitative assessments of explanations for the rate of recovery. This article illuminates four factors-damage, population density, human capital, and economic capital-that are thought to explain the variation in the pace of population recovery following disaster; it also explores the popular but relatively un...

Earthquake Mechanisms at the Head of the Philippine Sea Plate beneath the Southern Kanto District, Japan

An analysis has been made of the rupture mechanism of two earthquakes which occurred in the vicinity of the oblique collision beneath the tip of the descending Philippine Sea plate and the Pacific plate beneath Chiba, Japan. The M=6.5 1956 Chiba earthquake occurred in a dense nest of seismicity at a depth of between 70 and 80km beneath Chiba city, and may represent deformation at the tip of the...