Encyclopedia of Solid Earth Geophysics

Living Edition
| Editors: Harsh K. Gupta

Seismic Microzonation

  • Fumio Yamazaki
  • Yoshihisa MaruyamaEmail author
Living reference work entry
DOI: https://doi.org/10.1007/978-3-030-10475-7_187-1
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Definition

Seismic microzonation

The mapping of an area on the basis of various factors that can affect the intensity of ground shaking, such as seismic hazard, geological conditions, and topographical features, so as to account for the effects of local conditions on earthquake-induced damage.

Introduction

Local site conditions affect the intensity of ground shaking, and as a consequence, the extent of earthquake-induced damage. The amplitude, frequency content, and duration of strong ground motion are significantly influenced by local site conditions. A well-known example is the 1985 Mexico City earthquake. Although the fault rupture of the earthquake was about 350 km away from Mexico City, the city sustained catastrophic damage due to the strong amplification of the ground motion by soft soil deposits (Seed et al. 1988). The 1989 Loma Prieta earthquake caused extensive damage in the San Francisco Bay Area. The San Francisco Bay mud significantly influenced the amplitude, frequency...

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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  1. 1.National Research Institute for Earth Science and Disaster ResilienceTsukubaJapan
  2. 2.Graduate School of EngineeringChiba UniversityInage-kuJapan