Results 171 to 180 of about 44,640 (204)

Intraplate seismicity and stresses in young oceanic lithosphere

Journal of Geophysical Research: Solid Earth, 1984
We have conducted a systematic study of oceanic intraplate seismicity in the period 1964–1983 occurring in lithosphere younger than 35 million years. Focal mechanisms determined for 26 events using first motions, P wave modeling and surface wave amplitude radiation patterns, along with 13 previously determined mechanisms, indicate a diversity of ...
Douglas A. Wiens, Seth Stein
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Seismic Instability and Major Intraplate Earthquakes

2020
Consequent to active history of rifting, multiple plume interactions and a number of continental breakups, besides unusual crust-mantle structure, Indian Stable Continental Region (SCR) experiences moderate-to-large intraplate seismic activity since historical times.
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Intraplate seismicity and stress in the southeastern United States

Tectonophysics, 1989
Abstract The stress induced by topography and by density heterogeneities in the lithosphere has been computed for two seismic regions in the southeastern United States: the Southern Appalachian mountains and the South Carolina Coastal Plain. The lithosphere was assumed to be a three-dimensional layered elastic slab overlying an inviscid fluid.
Jian Kuang, L.T. Long, Jean-Claude Mareschal   +2 more
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Did deglaciation trigger intraplate seismicity in the New Madrid seismic zone?

Geology, 2001
We have investigated the interaction between large-scale plate driving forces, lithospheric structure, and the stresses induced by bending of the lithosphere as a result of glacial loading and unloading in the New Madrid seismic zone, eastern-central United States. The modeling shows that the removal of the Laurentide ice sheet that covered large parts
Balz Grollimund, Mark D. Zoback
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Intraplate Seismicity Across the Cape Verde Swell: A Contribution From a Temporary Seismic Network

Tectonophysics, 2014
Abstract We present an analysis and characterization of the regional seismicity recorded by a temporary broadband seismic network deployed in the Cape Verde archipelago between November 2007 and September 2008. The detection of earthquakes was based on spectrograms, allowing the discrimination from low-frequency volcanic signals, resulting in 358 ...
Nuno A. Dias, Graça Silveira, Luís Matias   +2 more
exaly   +5 more sources

Seismicity and seismotectonics of Libya: as an example of intraplate environment

Arabian Journal of Geosciences, 2011
This investigation covers the area bounded by latitudes 20° to 33° N and longitudes 9.5° to 25°E.The seismicity of area for the period 1900–2005 is evaluated. Libyan earthquake catalog is complete for the 4.4 M and greater over a 70-year span. The overall seismicity of Libya is found to be low to intermediate.
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GLOBAL PATTERNS OF INTRAPLATE STRESS AND CONSTRAINTS ON SEISMICITY

1st International Congress of the Brazilian Geophysical Society, 1989
Regional patterns of present-day tectonic stress can be used to evaluate the forces acting on the lithosphere and to investigate intraplate seismicity. Preliminary analysis of a global stress database iridicates that most intraplate regions are characterized by a compressional·stress regime; extension is limited almost entirely to thermally uplifted ...
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Rapid Intraplate Strain Accumulation in the New Madrid Seismic Zone

Science, 1992
Remeasurement of a triangulation network in the southern part of the New Madrid seismic zone with the Global Positioning System has revealed rapid crustal strain accumulation since the 1950s. This area experienced three large (moment magnitudes >8) earthquakes in 1811 to 1812.
L, Liu, M D, Zoback, P, Segall
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Intraplate seismicity of the southern part of the Pacific Plate

Journal of Geophysical Research: Solid Earth, 1984
We present a compilation of all the known seismicity of the part of the Pacific plate located south of the equator. This includes historical earthquakes dating back to 1937. In addition to the Gilbert Islands swarm of 1981–1983 we identify 60 events at 32 epicenters in the magnitude range 4.3–6.9.
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Long-wavelength gravity anomalies and intraplate seismicity

Earth and Planetary Science Letters, 1978
Abstract Anomalously high mid-plate and Mid-Oceanic Ridge seismicity apparently characterizes the flanks of the regional free-air gravity and topographic high roughly centered on the postulated Iceland hot spot; anomalously high mid-plate seismicity also occurs around the deep free-air gravity low centered just south of India.
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