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Book Multichannel Seismic reflection Data Bathymetry and Potential Field Data Central and Northern New Hebrides Island Arc Vanuatu to the Solomon Islands Southwest Pacific USGS Open File Report 90 208

Download or read book Multichannel Seismic reflection Data Bathymetry and Potential Field Data Central and Northern New Hebrides Island Arc Vanuatu to the Solomon Islands Southwest Pacific USGS Open File Report 90 208 written by and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Multichannel Seismic reflection Data Solomon Islands South Pacific Ocean

Download or read book Multichannel Seismic reflection Data Solomon Islands South Pacific Ocean written by National Geophysical Data Center and published by . This book was released on 1987 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Proceedings of the Session

Download or read book Proceedings of the Session written by South Pacific Applied Geoscience Commission and published by . This book was released on 1990 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book New Publications of the Geological Survey

Download or read book New Publications of the Geological Survey written by Geological Survey (U.S.) and published by . This book was released on 1991 with total page 746 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book New Publications of the U S Geological Survey

Download or read book New Publications of the U S Geological Survey written by and published by . This book was released on 1991 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book List of Publications and Reports

Download or read book List of Publications and Reports written by South Pacific Applied Geoscience Commission and published by . This book was released on 2002 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Proceedings of the Session

Download or read book Proceedings of the Session written by Committee for Co-ordination of Joint Prospecting for Mineral Resources in South Pacific Offshore Areas and published by . This book was released on 1988 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Analysis of Multi Component Seismic Data in the Shallow Water Environment of the Arabian Gulf

Download or read book Analysis of Multi Component Seismic Data in the Shallow Water Environment of the Arabian Gulf written by Zhao Zhang and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The quality of the seismic data is essential to quantitative reservoir characterization of rock properties and geological structure interpretation. Although marine multi-component seismic data hold a wealth of information about both compressional and shear velocities, the acquisition suffers from high levels of noise, which make the processing a challenging task and drastically decreases optimal value extraction. This dissertation employs a four component (4C) processing workflow via advanced time-frequency-wavenumber filtering and polarization methods to improve data quality for further interpretation and reservoir characterization. The proposed workflow is used to enhance seismic reflected energy and explore the shear wave information in the horizontal components. This study makes use of one 2D seismic line and well log dataset from one offshore in the southern Arabian Gulf (Abu Dhabi, United Arab Emirates). A combination of strong lateral seafloor heterogeneities, shallow water depths (~10m), and hard sea bottom results in highly interfering and complex wave-fields and seemingly noisy seismic data acquired in this shallow water environment. Meanwhile, we expect converted wave modes (PS-S waves) due to the strong reflector at hard sea bottom. In this work, we first propose sophisticated filtering algorithms to attenuate surface waves, and then designed advanced processing sequence combined with existing techniques for converted waves detection. Compared to body waves, surface waves are characterized by low velocity, low frequency and high polarization. First, we utilize the variable factor S transform to transform the seismic data from time domain to time-frequency-wavenumber(TFK) domain. This designed transform provides better resolution control on both time and frequency by adjusting the shape of Gaussian window function through additional parameters. Second, we estimate the impacts of residual surface waves on rotation and suppress those waves using TFK dependent polarization analysis. Polarization attributes, ellipticity and rise angle, are calculated through a developed 3D covariance matrix analysis that exploits the joint relationship of wavenumber, time, frequency and polarization. Those computed attributes are used for attenuating the surface waves and determining radial and transverse components. Third, we introduce the new 4C ocean bottom cable (OBC) processing strategy using both compressional and shear waves to recover the image of the subsurface from noisy seismic data. Comparing the time slices and gathers before and after using the strategy, it is observed that the method, described here, attenuates surface waves and remnant surface waves effectively and improves the signal to noise ratio without weakening the desired reflected signals. The results from this dissertation will find application in reservoir characterization from shear wave and converted wave analysis. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/155180

Book Proceedings of the Session Committee for Co ordination of Joint Prospecting for Mineral Resources in South Pacific Offshore Areas

Download or read book Proceedings of the Session Committee for Co ordination of Joint Prospecting for Mineral Resources in South Pacific Offshore Areas written by Committee for Co-ordination of Joint Prospecting for Mineral Resources in South Pacific Offshore Areas and published by . This book was released on 1986 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issue for 1/2 sessions includes Report of the Preparatory Meeting for Establishment of CCOP/SOPAC.

Book A Comparison of Seismic Processing Techniques on High resolution Multi channel Data in Deep and Shallow Water Conditions in the Solent U K

Download or read book A Comparison of Seismic Processing Techniques on High resolution Multi channel Data in Deep and Shallow Water Conditions in the Solent U K written by Mark Edward Hewton Purtle and published by . This book was released on 2019 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Hydrographic and Seismic Data Analysis in the Norwegian Sea and Offshore of the Solomon Islands

Download or read book Hydrographic and Seismic Data Analysis in the Norwegian Sea and Offshore of the Solomon Islands written by Elizabeth Baldwin Wilson and published by ProQuest. This book was released on 2008 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seismic oceanography is an important tool in understanding and mapping oceanographic processes because of its ability to map water boundaries, thermohaline intrusions, internal wave strain, and eddies over large lateral distances. The research presented here is split into three separate chapters. First, we present evidence that reflection characteristics on a seismic line in the Norwegian Sea represent various processes occurring in the ocean at the time of acquisition. High amplitude, continuous reflections represent thermohaline intrusions and current shear. Discontinuous, low amplitude reflections represent internal wave strain, and current shear. Coincident with the seismic data was temperature, salinity, and density data recorded at eight locations along the seismic line. This study supports work done by Nandi et al. in 2004 on a seismic line about 20 km north of the line studied here. The second chapter presents a further analysis of the same seismic line in the Norwegian Sea. Here, the internal wave energy is quantified using horizontal slope spectra. Observed, are correlations between the relative internal wave energy along the seismic line and seafloor roughness as well as critical slopes with respect to the M2 internal tide. This indicates the presence of high-energy internal waves radiating from slopes on the seismic line. The last study is located offshore of the Solomon Islands in the South Pacific Ocean. Similar strategies as in the Norwegian Sea are applied here on two seismic lines. The analysis of relative internal wave energy, coupled with critical slopes of the bathymetric rises on each line, yield a reflection that matches with the trajectory of the radiating internal tide beam from critical slopes. This confirms similar results found on the Hawaiian Ridge nearby by Martin et al. [in press]. The importance of these analyses is to better understand oceanographic processes occurring in regions of the ocean that relate to heightened mixing and the eventual overturning of water masses. Communication of warm water masses created at the equator with cold water masses created at the poles is not yet fully understood. It is necessary to understand water mass communication because the overturning of water masses maintains the stratification of the oceans, allowing the oceans to sequester carbon dioxide, transport nutrients, and effects atmospheric temperatures.