Modelling of Shear-Wave Related Acoustic Propagation on the uk Continental Shelf.

  • 2.57 MB
  • English
s.n , S.l
SeriesCanada Drb Drea Technical Memorandum -- 84/P
ContributionsEllis, D., Chapman, D.
ID Numbers
Open LibraryOL21888885M

Ellis and D. Chapman, Modelling of shear-wave related acoustic propagation on the U.K. continental shelf, DREA Technical Memorandum 84/P (). Google Scholar by: 2.

Ellis and D. Chapman "Modelling of shear-wave related acoustic propagation on the UK Continental Shelf," DREA Technical Memorandum 84/P, September DREA TM 82/O, see under Journal Papers. Applications of seismo-acoustic propagation modelling: Nuclear explosion and wind turbine noise simulate the true continental shelf a must be modified to allow for seismic starting fields.

This long-awaited volume, written specifically for petroleum workers, explores the fundamental concepts of rock mechanics along with various petroleum-related applications. Emphasis is placed on the weak sedimentary rocks which normally fall between traditional rock mechanics and soil mechanics.

Elasticity, failure mechanics, acoustic wave propagation, and geological. Predicting variability in the stability of slope sediments due to earthquake ground motion in the AFEN area of the western UK continental shelf it is based on modelling sediments on the.

A Study of Propagation Loss Dependence on Sediment Layer Thickness using the Fast Field Program.- Shear Wave Effects on Propagation to a Receiver in the Substrate.- Description and Some Results of the Operational Propagation Loss Model ALMOST (= Acoustic Loss Model for Operational Studies and Tasks) The general solution to eqn [1] is of the form p(x, t) = p R (x − ct) + p L (x + ct), where p R (x − ct) is a right-going wave and p L (x + ct) is a left-going right-going wave, for example, could be a transmitted pulse, and the left-going wave could be an echo.

Description Modelling of Shear-Wave Related Acoustic Propagation on the uk Continental Shelf. FB2

Continuous waves as well as pulses satisfy the wave equation. ISBN: OCLC Number: Notes: Proceedings of the Symposium on Ocean Seismo-Acoustics, organized by SACLANT ASW Research Centre, held June, at La Spezia, Italy. The fundamental parameter characterizing surface and volume scattering is the scattering scattering strength, S, is the ratio in dB between the intensity of the sound scattered by a unit surface (1 m 2) or by a unit volume (1 m 3), measured at a distance, 1 m, from the acoustic center of the scattering surface/volume, and the incident acoustic wave : L.

Bjørnø. In fluid dynamics, dispersion of water waves generally refers to frequency dispersion, which means that waves of different wavelengths travel at different phase waves, in this context, are waves propagating on the water surface, with gravity and surface tension as the restoring a result, water with a free surface is generally considered to be a.

The relative proportions of energy transmitted and reflected are determined by the contrast in acoustic impedance Z across the acoustic impedance of a rock is the product of its density (r) and its wave velocity(v); that is, Z = rv It is difficult to relate acoustic impedance to a tangible rock property but, in general, the harder.

It also shows seismic images in black and white print and covers compression related structures. Representing a compilation of examples for different types of geological structures, Atlas of Structural Geological Interpretation from Seismic Images is. Abstract. A laboratory seawater flume was designed and constructed for\ud experimental studies of the erosion characteristics of cohesive sediments.\ud The upright orientation of the flume and the use of an impeller drive system\ud reduced the amount of cross stream flow over the test bed area and allowed\ud the flow to be accurately controlled and replicated on separate flume Author: Paul Michael.

Wing. This result was achieved using a shear wave DiscussionBoth the gravity surveys and passive seismic surveys show a clear change in the ground composition where the depression lies. The negative gravity anomaly indicates a region of lower density, while the passive seismic results indicate an area of low impedance in the same region.

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Kim, S.C., L.D. Wright, and B.O. Kim, The combined effects of synoptic-scale and local-scale meteorological events on bed stress and sediment transport on the inner shelf of the Middle Atlantic Bight, Continental Shelf Research, 17 (4),The Gulf of Mexico Outer Continental Shelf (OCS), covering about million acres, is estimated to contain about 48 billion barrels of undiscovered, technically recoverable oil.

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A comprehensive set of broadband impulsive and narrowband tonal acoustic recordings in the Hz band from two L-arrays separated by 20 km were made in a shallow water area on the New Jersey continental shelf during the Shallow Water 共SW06兲 experiment. Burma (Myanmar) is situated along the obliquely colliding eastern margin of the Indian Plate (Fig.

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Features resulting from these processes are particularly well documented in the Paleogene of the central and northern North Sea, where large-scale sandstone intrusions significantly affect reservoir geometries and fluid-flow properties of sand and mudstone.

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Norris, Cochair Bio-Waves Inc., Cornish Dr., Encinitas. Some of the shear wave energy on the vertical geophone is a result of a coupling mechanism between the inline and vertical geophones.

The other shear wave wave arrivals cannot be explained as reflected energy as these arrivals have high energy over zero offset. The UK database of over wells drilled in the North Sea since the s is. Magnetic field measurements from satellites and ground-based magnetometers have revealed a wealth of detail about the sources of the Earth's magnetic field.

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Easily share your. However, the shear wave information, used in conjunction with the compressional waves, can enhance our understanding of the reservoir by providing attributes such as pore fluid, lithology and the structural image. Additionally, this information can be utilized in modeling and processing of multi-component surface seismic data.

The book will contribute both to the ongoing International Altimeter Service effort and to the building of a sustained Continental Water observing system in the perspective of GMES and GEOSS initiatives, supplied with satellite data from the series of Sentinel-3 satellites, the Jason series and further on the revolutionary SWOT Satellite Mission.A.

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