Observatory Seismology: An Anniversary Symposium on the Occasion of the Centennial of the University of California at Berkeley Seismographic StationsJoe J. Litehiser The first effective seismographs were built between 1879 and 1890. In 1885, E. S. Holden, an astronomer and then president of the University of California, instigated the purchase of the best available instruments of the time "to keep a register of all earthquake shocks in order to be able to control the positions of astronomical instruments." These seismographs were installed two years later at Lick Observatory on Mt. Hamilton and at the Berkeley campus of the University. Over the years those stations have been upgraded and joined by other seismographic stations administered at Berkeley, to become the oldest continuously operating stations in the Western Hemisphere. The first hundred years of the Seismographic Stations of the University of California at Berkeley, years in which seismology has often assumed an unforeseen role in issues of societal and political importance, ended in 1987. To celebrate the centennial a distinguished group of fellows, staff, and friends of the Stations met on the Berkeley campus in May 1987. The papers they presented are gathered in this book, a distillation of the current state of the art in observatory seismology. Ranging through subjects of past, present, and future seismological interest, they provide a benchmark reference for years to come. The first effective seismographs were built between 1879 and 1890. In 1885, E. S. Holden, an astronomer and then president of the University of California, instigated the purchase of the best available instruments of the time "to keep a register of all earthquake shocks in order to be able to control the positions of astronomical instruments." These seismographs were installed two years later at Lick Observatory on Mt. Hamilton and at the Berkeley campus of the University. Over the years those stations have been upgraded and joined by other seismographic stations administered at Berkeley, to become the oldest continuously operating stations in the Western Hemisphere. The first hundred years of the Seismographic Stations of the University of California at Berkeley, years in which seismology has often assumed an unforeseen role in issues of societal and political importance, ended in 1987. To celebrate the centennial a distinguished group of fellows, staff, and friends of the Stations met on the Berkeley campus in May 1987. The papers they presented are gathered in this book, a distillation of the current state of the art in observatory seismology. Ranging through subjects of past, present, and future seismological interest, they provide a benchmark reference for years to come. |
Contents
One Hundred Years of Contributions of the University of California | 24 |
Part II | 50 |
Progress and Promise | 64 |
LargeScale Processing and Analysis of Digital Waveform Data from | 86 |
Seismographic Recording at Berkeley 18871987 | 109 |
Array SeismologyPast Present and Future Developments | 123 |
Seismicity Map of North America | 157 |
Seismicity of the Australian Plate and Its Pacific Plate Margin | 168 |
Hypocenter Mapping and the Extensibility | 225 |
Part IV | 234 |
Development of FaultPlane Studies for the Mechanism | 243 |
Deterministic and Stochastic Approaches | 257 |
Seismic Energy Spectrum and the Savage | 279 |
Constraints from Seismograms on the Physical Characteristics | 303 |
Studies Using Global Seismological Networks | 320 |
Love and Rayleigh Waves in Irregular Structures | 333 |
Common terms and phrases
aftershocks amplitude analysis array attenuation azimuth beamforming Berkeley Bolt boundary broadband Brune Bull Byerly Cape Mendocino catalog central Coalinga Coast Ranges coda coda waves component corner frequency crustal curve depth developed displacement distribution Dziewonski Earth epicenters estimates explosions focal mechanisms Geological Geophys Geophysics global ground motion hypocenters inhomogeneities instruments Kanamori large earthquakes lithosphere long-period magnitude McEvilly Mendocino Mendocino fracture zone monitoring noise NORSAR North North American plates observations Observatory ocean operation P-wave Pacific plates paradigm parameters Parkfield period phase velocities plate processing quake Rayleigh waves recording regional network San Andreas fault Savage and Wood Seism seismic moment seismic zone seismogenic Seismographic Network Seismographic Stations seismology seismometer shown in figure signal solutions spectral spectrum stress drop structure subduction surface waves tape tectonic telemetry teleseismic three-component tion travel-time USGS Valley vertical waveform data