Rotational Seismology and Engineering Applications: Proceedings for the First International Workshop, Menlo Park, California, U.S.A.-September 18 to 19, 2007.

摘要

The First International Workshop on Rotational Seismology and Engineering Applications was held in Menlo Park, California, on 1819 September 2007, as one of the activities of the International Working Group on Rotational Seismology. This workshop was hosted by the U.S. Geological Survey (USGS), which recognized this topic as a new research frontier enabling better understanding of the earthquake processes and reduction of seismic hazards. The technical program consisted of three presentation sessions: plenary and oral, held during the first day, and poster, held during the second day, followed by discussions. A post-workshop session was held the following day in which scientists of the Laser Interferometer Gravitational-wave Observatory (LIGO) presented their work on seismic isolation of their ultra-high precision facility, which requires very accurate recording of translational and rotational components of ground motions. The Workshop began with the plenary session, held in the morning of 18 September at the USGS campus, in which three lectures were presented for the general audience. William H. K. Lee of the USGS summarized recent observations of rotational ground motions from local earthquakes in Taiwan. Mihailo Trifunac of the University of Southern California lectured on rotations in structural responses. Heiner Igel of the University of Munich presented observations of rotational ground motions of earthquakes in the far-field using ring laser gyros. About 100 individuals attended this session. The Workshop then moved to the nearby Vallombrosa Center for in-depth presentations and discussions among 63 participants. Five oral presentations were given in the afternoon on major areas of research on rotational seismology and engineering issues. The morning session of the following day, 19 September, was devoted to 30 posters covering a wide range of topics, including large block rotations in geological time scale, rotations of monuments after earthquakes, and theories, instruments, observations, and analyses of rotational motions.