HazNet Research Topics

Haznet Research Topic - Earthquakes

NSGD#: CUIMR-R-93-011
Title: Loading and capacity effects on platform performance in extreme condition storm waves and earthquakes.
Author: Bea R. G.; Young Carlton
Citation: Paper presented at the 25th Annual Offshore Technology Conference, pp. 45-60, Houston, Texas, May 3-6, 1993.
Year: 93
# Pages: 16

Abstract: Dynamic-transient loading effects from extreme storm waves and earthquakes can have important influences on the nonlinear ultimate limit state performance of fixed off-shore platforms. Recorded and synthetic storm wave and earthquake time histories have been used to develop loading time histories acting on template-type platforms having natural periods in the range of 1 to 5 seconds. The interactions of these loading histories with the dynamic, nonlinear, hysteretic performance characteristics of idealized systems have been analyzed.
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NSGD#: CUIMR-R-92-062
Title: Late holocene stratigraphy and paleoseismicity, Humboldt Bay, California.
Author: Valentine David; Vick Greg; Carver Gary; Manhart Christine Shivelle
Citation: "Pacific Cell, Friends of the Pleistocene: Guidebook for the Field Trip to Northern Coastal California," R. M. Burke and G. A. Carver, pp. 182-187, June 1992.
Year: 92

Abstract: Late Holocene stratigraphy representing rapid episodic subsidence due to large magnitude earthquakes is found in synclines of Humboldt Bay, California. These synclines are onshore structures associated with the Cascadia subduction zone fold and thrust belt, which bends eastward in Northern California. In the axes of the synclines, repeated sequences of intertidal muds overlying tidal-marsh to wetland peat deposits represent episodes of rapid submergence followed by gradual emergence. Observations of the contacts between the peats and overlying muds are abrupt (<1 cm). The rapid submergence is interpreted to represent coseismic subsidence associated with large magnitude earthquakes.

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NSGD#: CUIMR-R-92-064
Title: Late holocene tectonics and paleoseismicity, southern Cascadia subduction zone.
Author: Clarke Samuel H. Jr.; Carver Gary A.
Citation: "Science," 255:188-192, January 10, 1992.
Year: 92

Abstract: Holocene deformation indicative of large subduction-zone earthquakes has occurred on two large thrust fault systems in the Humboldt Bay region of northern California. Displaced stratigraphic markers record three offsets of 5 to 7 m each on the Little Salmon fault during the past 1700 years. Smaller and less frequent Holocene displacements have occurred in the Mad River fault zone. Elsewhere, as many as five episodes of sudden subsidence of marsh peats and fossil forests and uplift of marine terraces are recorded. Carbon-14 dates suggest that the faulting, subsidence, and uplift events were synchronous. Relations between magnitude and various fault-offset parameters indicate that earthquakes accompanying displacements on the Little Salmon fault had magnitudes of at least 7.6 to 7.8. More likely this faulting accompanied rupture of the boundary between the Gorda and North American plates, and magnitudes were about 8.4 or greater.
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NSGD#: CUIMR-T-78-002
Title: A LABORATORY STUDY OF THE FLUID-STRUCTURE INTERACTION OF SUB-MERGED TANKS AND CAISSONS IN EARTHQUAKES
Author: BYRD ROBERT C
Year: 78
# Pages: 150
Abstract: *****NO ABSTRACT*****
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NSGD#: CUIMR-X-82-001
Title: THE BEHAVIOR OF SUBMERGED, MULTIPLE BODIES IN EARTHQUAKES
Author: LIAO WEN-GEN
Year: 82
Abstract: *****NO ABSTRACT*****
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NSGD#: CUIMR-R-79-035
Title: THE 1982 EARTHQUAKE IN SAN DIEGO
Author: LEGG MARK; AGNEW DUNCAN CARR
Citation: EARTHQUAKES AND OTHER PERILS SAN DIEGO REGION PATRICK L. ABBOTT AND WILLIAM J. ELLIOTT (EDS.) PREPARED FOR GEOLOGICAL SOCIETY OF AMERICA FIELD TRIP BY SAN DIEGO ASSOCIATION OF GEOLOGISTS NOVEMBER, 1979
Year: 79
Abstract: *****NO ABSTRACT*****

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NSGD#: CUIMR-T-82-006
Title: THE BEHAVIOR OF SUBMERGED, MULTIPLE BODIES IN EARTHQUAKES
Author: LIAO WEN-GEN
Year: 83
Program#: UCB/EERC-82/16
# Pages: 121
Abstract: *****NO ABSTRACT*****
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NSGD#: CUIMR-R-79-049
Title: EARTHQUAKE HISTORY OF SAN DIEGO
Author: AGNEW DUNCAN CARR; LEGG MARK; STRAND CARL
Citation: EARTHQUAKES AND OTHER PERILS SAN DIEGO REGION P. ABBOTT AND W. ELLIOT (EDITORS) PP. 123-138 1979
Year: 79
Abstract: *****NO ABSTRACT*****
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NSGD#: CUIMR-X-78-006
Title: A LABORATORY STUDY OF SUBMERGED MULTI-BODY SYSTEMS IN EARTHQUAKES
Author: ANSARI GHOLAM REZA
Year: 78
Abstract: *****NO ABSTRACT*****
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NSGD#: CUIMR-R-91-032
Title: A re-evaluation of earthquake hazards within the California coastal zone: lessons from the Loma Prieta Earthquake.
Author: McCarthy Richard J.; Bea Robert G.; Slosson James E.
Citation: "Coastal Zone 91," The Seventh Symposium on Coastal and Ocean Management, July 8-12, 1991.
Year: 91
# Pages: 20

Abstract: California has experienced two damaging earthquakes during the last three years. The October 1987 Whittier Narrows earthquake was a 5.9 magnitude event, caused $358 million in damage, and took one life. The 7.1 magnitude Loma Prieta earthquake occurred on October 17, 1989. This moderately large earthquake had a duration of 15 seconds, took 62 lives, caused thousands of injuries, and property damage of almost $7 billion. These two destructive events demonstrate the need to improve earthquake planning and actively mitigate earthquake hazards. Strong ground motion data recorded during the Loma Prieta earthquake along with observed structural response needs continued analyses, providing invaluable insight into the impacts that a magnitude 7+ earthquake could have on a major metropolitan area in California and existing oil facilities, both onshore and offshore. This report summarizes engineering implications of such an earthquake as they relate to offshore oil production platforms in the coastal waters of California and Alaska.
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NSGD#: ORESU-R-88-002
Title: Restoring forces on vertical circular cylinders forced by earthquakes.
Author: Tanaka Yoshihiro; Hudspeth Robert T.
Citation: "Earthquake Engineering and Structural Dynamics," 16:99-119, 1988.
Year: 88

Abstract: An infinite eigen series expansion is presented for the hydrodynamic pressure and for the dynamic response to earthquake excitation of a circular cylindrical structure having uniform stiffness and surrounded by a compressible fluid. The solution requires only a single summation over the eigen functions and eliminates the need for a double summation over both the eigen functions and the trial functions as is required by Rayleigh-Ritz methods. The analytical solution presented is valid only for the special case of a totally immersed, vertical circular cylindrical structure having both uniform stiffness and a uniform mass distribution.

Notes: 9513 engr Calculating dynamic response of vertical cylinders to earthquake excitation.