%0 Book Section %1 bauer_etal:2005 %A Bauer, K. %A Haberland, C. %A Pratt, R. G. %A Hou, F. %A Medioli, B. E. %A Weber, M. H. %B Scientific results from the Mallik 2002 gas hydrate production research well program, Mackenzie Delta, Northwest Territories, Canada %D 2005 %E Dallimore, S. R. %E Collett, T. S. %I King's Printer and Controller of Stationery %K geophysics seismics %N 585 %P 1--21 %T Ray-based cross-well tomography for P-wave velocity, anisotropy, and attenuation structure around the JAPEX/JNOC/GSC et al. Mallik 5L-38 gas hydrate production research well %U http://www.worldcat.org/oclc/107749797 %X Cross-well seismic data from the Mallik 2002 project were analyzed using ray-based tomographic reconstruction algorithms. Images of the P-wave velocity, the P-wave anisotropy, and the P-wave attenuation (Qp-1) structures are reconstructed from the picked arrival times and from ray-path-averaged attenuation values. The reconstructed horizontal P-wave velocities are generally 10 to 20\% faster than the vertical velocities. The reconstructed isotropic P-wave velocities correspond to the average of the horizontal and vertical velocities. The reconstructions image the delta-front - shallow-marine Mackenzie Bay Sequence and the underlying fluviodeltaic Kugmallit Sequence. The tomograms are dominated by the effects of the gas hydrate deposits, which cause elevated seismic velocities. The location of laminated silt is correlated with increased velocity anisotropy. A combination of high velocities and strong attenuation (Qp<15) is observed in sediments with the highest gas hydrate saturation, which provides constraints on models for the microscopic structure of the deposits.

@incollection{bauer_etal:2005, abstract = {Cross-well seismic data from the Mallik 2002 project were analyzed using ray-based tomographic reconstruction algorithms. Images of the P-wave velocity, the P-wave anisotropy, and the P-wave attenuation (Qp-1) structures are reconstructed from the picked arrival times and from ray-path-averaged attenuation values. The reconstructed horizontal P-wave velocities are generally 10 to 20\% faster than the vertical velocities. The reconstructed isotropic P-wave velocities correspond to the average of the horizontal and vertical velocities. The reconstructions image the delta-front - shallow-marine Mackenzie Bay Sequence and the underlying fluviodeltaic Kugmallit Sequence. The tomograms are dominated by the effects of the gas hydrate deposits, which cause elevated seismic velocities. The location of laminated silt is correlated with increased velocity anisotropy. A combination of high velocities and strong attenuation (Qp<15) is observed in sediments with the highest gas hydrate saturation, which provides constraints on models for the microscopic structure of the deposits.}, added-at = {2012-09-01T13:08:21.000+0200}, author = {Bauer, K. and Haberland, C. and Pratt, R. G. and Hou, F. and Medioli, B. E. and Weber, M. H.}, biburl = {https://www.bibsonomy.org/bibtex/24d190ccc3dbdd774c53697c1b547cbd3/nilsma}, booktitle = {Scientific results from the Mallik 2002 gas hydrate production research well program, Mackenzie Delta, Northwest Territories, Canada}, editor = {Dallimore, S. R. and Collett, T. S.}, interhash = {aac6c6ee626267de3265b4794686b5b5}, intrahash = {4d190ccc3dbdd774c53697c1b547cbd3}, issn = {0068-7626}, keywords = {geophysics seismics}, number = 585, pages = {1--21}, publisher = {King's Printer and Controller of Stationery}, series = {Geological Survey of Canada Bulletin}, timestamp = {2021-02-09T13:26:58.000+0100}, title = {Ray-based cross-well tomography for P-wave velocity, anisotropy, and attenuation structure around the JAPEX/JNOC/GSC et al. Mallik 5L-38 gas hydrate production research well}, url = {http://www.worldcat.org/oclc/107749797}, year = 2005 }