Results 191 to 200 of about 2,314 (228)
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High resolution seismic profiles adjacent to Whidbey and Fidalgo Islands, Washington
Open-File Report, 1976Approximately 120 km of high-resolution seismic reflection profiles were recorded in the environs of Whidbey and Fidalgo Islands, Washington from the U.S. Geological Survey's research vessel DON J. MILLER on January 14 and 15, 1976. These data were^ obtained to provide information on the thickness and distribution of Quaternary deposits to identify ...
P. D. Snavely +5 more
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A simple deep-towed vertical array for high-resolution reflection seismic profiling
Deep Sea Research Part B. Oceanographic Literature Review, 1986A simple, low cost, deep-towed system for high-resolution reflection seismic profiling is described. It consists of a vertical array with two hydrophones having a separation of 2.2 m and rigidly mounted onto streamlined tow bodies. Improvement of the signal-to-noise ratio is attained by simple stacking of the hydrophone outputs after signal ...
R. Herber +3 more
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Marine Geology, 1993
Abstract A detailed Pleistocene seismic stratigraphy is proposed for the Skagerrak, an over 700 m deep, elongated depression in the northeastern North Sea. By comparing our high resolution seismic results with those from glacial environments of Canada, Alaska and Antarctica, we conclude that at least during the Weichselian (if not also during the ...
W.R von Haugwitz, H.K Wong
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Abstract A detailed Pleistocene seismic stratigraphy is proposed for the Skagerrak, an over 700 m deep, elongated depression in the northeastern North Sea. By comparing our high resolution seismic results with those from glacial environments of Canada, Alaska and Antarctica, we conclude that at least during the Weichselian (if not also during the ...
W.R von Haugwitz, H.K Wong
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High resolution velocity/depth spectra estimation for seismic profiling
Ocean '74 - IEEE International Conference on Engineering in the Ocean Environment, 1974High resolution methods such as the so called maximum likelihood or maximum entropy procedures have found extensive use in spectral analysis and array processing. In all of these applications the spectral signals have been sinusoids or planewaves respectively.
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High-resolution marine seismic reflection profiling: Systems and capabilities
The Journal of the Acoustical Society of America, 2007Seismic reflection profiling is the most effective and commonly used geophysical tool for sub-seafloor geologic investigations. A broad variety of seismic data acquisition systems are available, depending on the imaging depth and resolution required. High-resolution methods utilize controlled sound sources that generate signals in the frequency range ...
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Reservoir Characterization Applying High‐Resolution Seismic Profiling, Rabis Creek, Denmark
Groundwater, 1993Abstract Onshore reflection seismics have been used to characterize the geometry and lithology of ground‐water reservoirs. The study was carried out as a seismic sequence and facies analysis along Rabis Creek in western Denmark. A1350 m long seismic section was produced on a presumed homogeneous outwash sand plain.
Henrik Olsen +3 more
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Development of high resolution 3D vertical seismic profiles
20113D seismic surveys have become a well-accepted method of imaging sub-surface geology in the Bushveld Basin. Because both the seismic sources and receivers are placed at surface, most surveys are limited to imaging faults with > or = 7 m throw. However, some areas such as shaft infrastructure can benefit from the ability to detect smaller structures ...
Pretorius, C.C. +2 more
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Anatomy of a transgressive tidal inlet reconstructed through high-resolution seismic profiling
Geomorphology, 2019Although the morphology and morphodynamics of modem tidal inlets have been analysed in a wealth of studies, these systems can be considered representative only for highstand conditions, while little is known about the characteristics and evolution of their transgressive counterparts.
Ronchi L +3 more
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Seismological Research Letters, 1992
Abstract Results of geological and geophysical research conducted in the New Madrid seismic zone since the early 1970’s indicate that much of the seismicity of the area is associated with late Precambrian age rift-related geological structures that have been reactivated by contemporary stresses.
John L. Sexton +3 more
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Abstract Results of geological and geophysical research conducted in the New Madrid seismic zone since the early 1970’s indicate that much of the seismicity of the area is associated with late Precambrian age rift-related geological structures that have been reactivated by contemporary stresses.
John L. Sexton +3 more
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High Resolution Seismic Profiling of Paleochannels
4th International Congress of the Brazilian Geophysical Society, 1995M. Seman, V. Wilson
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