Zobrazeno 1 - 10
of 56
pro vyhledávání: '"N. R. Chapman"'
Autor:
M. Riedel, M. Scherwath, M. Römer, C. K. Paull, E. M. Lundsten, D. Caress, P. G. Brewer, J. W. Pohlman, L. L. Lapham, N. R. Chapman, M. J. Whiticar, G. D. Spence, R. J. Enkin, K. Douglas
Publikováno v:
Frontiers in Earth Science, Vol 10 (2022)
Barkley Canyon is one of the few known sites worldwide with the occurrence of thermogenic gas seepage and formation of structure-II and structure-H gas hydrate mounds on the seafloor. This site is the location of continuous seafloor monitoring as par
Externí odkaz:
https://doaj.org/article/219d4027962a4d00814bd6f4e93a6155
Publikováno v:
Limnology and Oceanography: Methods. 8:155-171
Natural seepage from the seafloor is a worldwide phenomenon but quantitative measurements of gas release are rare, and the entire range of the dynamics of gas release in space, time, and strength remains unclear so far. To mitigate this, the hydroaco
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5ddcf7571c07bda48f78b31f77fa1ef7
https://doi.org/10.4319/lom.2010.8.155
https://doi.org/10.4319/lom.2010.8.155
Publikováno v:
Marine Geology. 252:193-206
This paper describes structurally controlled gas seeps and their influence on seafloor morphology at sites within Queen Charlotte Basin (QCB); a sedimentary basin situated offshore British Columbia, western Canada. Numerous surficial and shallow sedi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::03295a3dafa3ef260c2568090efce5a1
https://doi.org/10.1016/j.margeo.2008.04.009
https://doi.org/10.1016/j.margeo.2008.04.009
Publikováno v:
Marine Geology. 239:83-98
A 1.5 km long, 1 km wide and 70–80 m high carbonate mound was identified on the mid-slope region of the subduction accretionary sedimentary prism offshore Vancouver Island ∼ 3.5 km west of Ocean Drilling Program (ODP) Site 889 and Integrated Ocea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9853b9af8b2a3100000f91f955976dc1
https://doi.org/10.1016/j.margeo.2007.01.002
https://doi.org/10.1016/j.margeo.2007.01.002
Autor:
N. R. Chapman, R. Marrett
Publikováno v:
The Journal of the Acoustical Society of America. 119:3669-3675
Acoustic transients radiated from small magnitude undersea earthquakes were studied in an experiment carried out using a towed horizontal line array operating in the South Fiji Basin. The transient signals consisted of P, S, and T phases, with the T-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3366a1b3f7f01ad39fd9897ebf3b2a4d
https://doi.org/10.1121/1.2195073
https://doi.org/10.1121/1.2195073
Publikováno v:
Annals of the New York Academy of Sciences. 912:65-75
The Cascadia accretionary margin off Vancouver Island is one of the best studied margins world-wide for the determination of in situ properties of marine gas hydrates. Most quantitative information has come from cores and downhole logs of the Ocean D
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::746a7d94b0607c9522829490e53a3505
https://doi.org/10.1111/j.1749-6632.2000.tb06760.x
https://doi.org/10.1111/j.1749-6632.2000.tb06760.x
Publikováno v:
Nature. 420:656-660
Below water depths of about 300 metres, pressure and temperature conditions cause methane to form ice-like crystals of methane hydrate. Marine deposits of methane hydrate are estimated to be large, amassing about 10,000 gigatonnes of carbon, and are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4bee4778e811ea8f62b86edda4c5867b
https://doi.org/10.1038/nature01263
https://doi.org/10.1038/nature01263
Publikováno v:
The Leading Edge. 20:87-109
This article describes recent work on marine hydrates off western Canada. Natural occurrences of gas hydrates have been reported in the geoscience literature since the early 1970s. Gas hydrates are solid ice-like structures in which gas molecules (la
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e2db266f1024a9392d85fe0d79fcc92c
https://doi.org/10.1190/1.1438888
https://doi.org/10.1190/1.1438888
Publikováno v:
Journal of Computational Acoustics. :295-306
The paper describes a new broadband tomographic matched field method for estimating the geoacoustic properties of a range-dependent shallow water environment. This method is designed for a multiple acoustic element configuration (several sources and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ca3fa582438cf3a3e1d7eb10d9db3664
https://doi.org/10.1142/s0218396x00000212
https://doi.org/10.1142/s0218396x00000212
Publikováno v:
Marine Geology. 164:53-68
A bottom simulating reflector (BSR), representing the base of the gas hydrate stability field, was observed over a closely spaced grid of seismic lines on the continental slope of the northern Cascadia margin. A simple conductive model was used to ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e41fd860ef21d2db050b9e14eb7a90ac
https://doi.org/10.1016/s0025-3227(99)00126-7
https://doi.org/10.1016/s0025-3227(99)00126-7