Rotational seismology

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Abstract

Rotational seismology is an emerging study of all aspects of rotational motions induced by earthquakes, explosions, and ambient vibrations. It is of interest to several disciplines, including seismology, earthquake engineering, geodesy, and earth-based detection of Einstein’s gravitation waves.

Rotational effects of seismic waves, together with rotations caused by soil–structure interaction, have been observed for centuries (e.g., rotated chimneys, monuments, and tombstones). Figure 1a shows the rotated monument to George Inglis observed after the 1897 Great Shillong earthquake. This monument had the form of an obelisk rising over 19 metres high from a 4 metre base. During the earthquake, the top part broke off and the remnant of some 6 metres rotated about 15° relative to the base. The study of rotational seismology began only recently when sensitive rotational sensors became available due to advances in aeronautical and astronomical instrumentations.

Additional publication details

Publication type Book chapter
Publication Subtype Book Chapter
Title Rotational seismology
DOI 10.1007/978-1-4020-4399-4_304
Year Published 2016
Language English
Publisher Springer
Contributing office(s) Earthquake Science Center
Larger Work Type Book
Larger Work Title Encyclopedia of Natural Hazards