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  • 1
    Monograph available for loan
    Monograph available for loan
    Cambridge : Cambridge University Press
    Call number: M 16.89855
    Description / Table of Contents: The first global overview of intraplate earthquakes, their mechanical models and investigative geophysical techniques, for academic researchers, professionals and engineers
    Type of Medium: Monograph available for loan
    ISBN: 9781107040380
    Parallel Title: Print version: Intraplate Earthquakes
    Language: English
    Note: Cover; Half title; Title; Copyright; Contents; Contributors; Preface; 1 Introduction; 2 Intraplate earthquakes in Australia; 2.1 Introduction; 2.2 Two centuries of earthquake observations in Australia; 2.2.1 Mechanism, geographic distribution, and strain rate; 2.2.2 Seismogenic depth; 2.2.3 Attenuation and scaling relations; 2.3 A long-term landscape record of large (morphogenic) earthquakes; 2.3.1 Variation in fault scarp length and vertical displacement; 2.3.2 The influence of crustal type and character on seismic activity rates; 2.4 Patterns in earthquake occurrence. , 2.5 Maximum magnitude earthquake2.5.1 Scarp length as a proxy for paleo-earthquake magnitude; 2.6 Implications for SCR analogue studies: factors important in earthquake localisation; 2.6.1 Mechanical and thermal influences; 2.6.2 Structural architectural influences; 2.7 Conclusions; Acknowledgements; 3 Intraplate seismicity in Brazil; 3.1 Introduction; 3.2 Earthquake catalogue; 3.3 Seismicity map; 3.4 Seismotectonic correlations; 3.4.1 Lower seismicity in Precambrian cratonic provinces; 3.4.2 Intraplate seismicity and cratonic roots; 3.4.3 Passive margin seismicity. , 3.4.4 Influence of neotectonic faults3.4.5 Flexural stresses; 3.5 Discussion and conclusions; Acknowledgments; 4 Earthquakes and geological structures of the St. Lawrence Rift System; 4.1 Introduction; 4.2 Historical earthquakes and their impact; 4.3 Seismic zones of the SLRS; 4.3.1 Charlevoix; 4.3.2 Lower St. Lawrence; 4.3.3 Western Quebec; 4.3.4 Background seismicity; 4.4 The St. Lawrence Rift System; 4.5 The rift hypothesis and the SLRS: discussion and conclusions; Acknowledgments; 5 Intraplate earthquakes in North China; 5.1 Introduction; 5.2 Tectonic background; 5.2.1 Geological history. , 5.2.2 Lithospheric structure5.2.3 Major seismogenic faults; 5.3 Active tectonics and crustal kinematics; 5.4 Strain rates and seismicity; 5.5 Seismicity; 5.5.1 Paleoseismicity; 5.5.2 Large historic events; 1303 Hongdong earthquake (M 8.0); 1556 Huaxian earthquake (M 8.3); 1668 Tancheng earthquake (M 8.5); 1679 Sanhe earthquake (M 8.0); 1695 Linfen earthquake (M 7.5-8.0); 5.5.3 Large instrumentally recorded earthquake; The 1966 Xingtai earthquake (Ms 7.2); The 1975 Haicheng earthquake (Ms 7.3); The 1976 Tangshan earthquake (Ms 7.8); 5.6 Spatiotemporal patterns of large earthquakes. , 5.6.1 Long-distance roaming of large earthquakes5.6.2 Fault coupling and interaction; 5.6.3 A conceptual model for mid-continental earthquakes; 5.7 Implications for earthquake hazards; Acknowledgements; 6 Seismogenesis of earthquakes occurring in the ancient rift basin of Kachchh, Western India; 6.1 Introduction; 6.2 Tectonic framework, structure, and tectonic evolution of Kachchh Rift basin; 6.2.1 Structure and tectonics; 6.2.2 Tectono-volcanic events; 6.2.3 Tectonic evolution and existing earthquake generation models of the Kachchh Rift zone. , 6.2.4 Identification of magmatic intrusive bodies.
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  • 2
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Pure and applied geophysics 122 (1984), S. 947-965 
    ISSN: 1420-9136
    Keywords: Mechanism ; reservoir ; induced seismicity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The study of reservoir-induced seismicity offers a controlled setting to understand the physics of the earthquake process. Data from detailed investigations at reservoirs in South Carolina suggested that the mechanism of transmission of stress to hypocentral locations is by a process of diffusion of pore pressure (Pp). These results were compared with available worldwide data. The ‘seismic’ hydraulic diffusivity, α s , was estimated from various seismological observations, and was found to be a good estimate of the material hydraulic diffusivity, α. Application of these results to a dedicated experiment to understand RIS at Monticello Reservoir, S.C., suggested that the diffusing Pp front plays a dual role in the triggering of seismicity. The spatial and temporal pattern of RIS can be explained by the mechanical effect of diffusion of Pp with a characteristic hydraulic diffusivity within an order of magnitude of 5×104 cm2/s, corresponding to permeability values in the millidarcy range. The triggering of seismicity is due to the combined mechanical effect of Pp in reducing the strength and, possibly, the chemical effect in reducing the coefficient of friction between the clays in the pre-existing fractures and the rocks that enclose these fractures.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Pure and applied geophysics 115 (1977), S. 275-281 
    ISSN: 1420-9136
    Keywords: Fault plane solutions ; Hydrofracture ; Seismicity at reservoir
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Seven months of seismic monitoring near Jocassee reservoir (impounded 1974) resulted in the detection of four clusters of earthquake activity. Composite fault plane solutions (CFPS) for each cluster indicate strike slip faulting for shallow earthquakes (〈1.0 km) on the shores of the reservoir and normal faulting for deeper events (1–3 km) in the middle of the reservoir. The directions of the axes of maximum and minimum compression inferred from the CFPS were found to be NW and NE respectively and contrast with the NE and NW directions obtained by hydrofracture in a shallow well (230 m) at Bad Creek, about 10 km from the epicentral region.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Pure and applied geophysics 145 (1995), S. 167-174 
    ISSN: 1420-9136
    Keywords: Intersection model ; continuing seismicity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The cause for continuous induced seismicity at Koyna is not well understood. A heuristic model based on various physical parameters observed at Koyna is being proposed to explain the ongoing seismicity. This model contains two essential elements: (i) Intersecting faults near Koyna provide means of stress build-up in response to plate tectonic forces. (ii) The annual reservoir loading cycle and changes in the ground water table perturb this stress build-up by an influx of pore pressure in a fluid infiltrated medium. Hence, the spatial and temporal pattern of the pore prussure distribution and the seismicity will be governed by the location and hydromechanical properties of the faults and fractures. The predictions of the model can be tested by comparing the temporal and spatial pattern of seismicity with the changes in lake level and water table.
    Type of Medium: Electronic Resource
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  • 6
    Publication Date: 2011-07-01
    Description: An earthquake-induced sand blow was discovered in a shallow trench dug on the premises of the Colonial Dorchester State Historical Site in Summerville, South Carolina. A comparison of its location with available seismicity, seismic reflection, and shallow geological and geomorphologic data suggests that the sand blow was associated with a splay of the currently active Sawmill Branch fault zone. This is the first sand blow to be directly associated with a specific fault in the Middleton Place-Summerville seismic zone, the source zone for the Charleston earthquakes. Geotechnical and vibracore data revealed that the source sand is [~]3 m thick and the top of the sand is at a depth of [~]2.5 m below the ground surface. The sand blow was associated with a pre-1886 earthquake that occurred possibly 3,500 YBP or earlier, with an estimated maximum magnitude of 5.6.
    Print ISSN: 0895-0695
    Electronic ISSN: 1938-2057
    Topics: Geosciences
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  • 7
    Publication Date: 2019-10-28
    Print ISSN: 1435-9529
    Electronic ISSN: 1435-9537
    Topics: Geosciences
    Published by Springer
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  • 8
    Publication Date: 2005-08-01
    Description: Increase in strength due to aging of sands is reflected in higher blow counts and tip resistance values in penetration resistance measurements. This affects the magnitudes and peak ground acceleration estimates of prehistoric earthquakes obtained from an analysis of geotechnical observations at paleoliquefaction sites in the South Carolina Coastal Plain. In this study, corrections were made to account for the effects of soil aging, which were neglected in earlier estimates. The results show that when the effects of aging of soils on their geotechnical properties are incorporated, the resulting back-calculations reduced earlier magnitude estimates of prehistoric earthquakes by about 0.9 units. The peak ground acceleration estimates were reduced by about 15% for those earthquakes originally estimated at approximately 0.15 g. For those earthquakes whose original estimates were greater than 0.2 g, there was no noticeable change when a correction was made for the aging of soils.
    Print ISSN: 8755-2930
    Electronic ISSN: 1944-8201
    Topics: Architecture, Civil Engineering, Surveying , Geosciences
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  • 9
  • 10
    Publication Date: 1979-04-01
    Print ISSN: 0031-9201
    Electronic ISSN: 1872-7395
    Topics: Geosciences , Physics
    Published by Elsevier
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