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| 02329nam 2200337za 4500 |
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| 001 | 9.820662 |
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| 003 | CaOODSP |
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| 005 | 20230131161136 |
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| 007 | cr ||||||||||| |
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| 008 | 160708s2015 oncabd ob f000 0 eng d |
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| 020 | |a978-0-660-03233-7 |
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| 040 | |aCaOODSP|beng |
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| 041 | |aeng|bfre |
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| 043 | |an-cn-nt |
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| 086 | 1 |aM44-2015/8E-PDF |
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| 245 | 00|aEvidence for a deep gas-hydrate stability zone associated with submerged permafrost on the Canadian Arctic Beaufort Shelf, Northwest Territories |h[electronic resource] / |cM. Riedel … [et al.]. |
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| 260 | |a[Ottawa] : |bNatural Resources Canada, |c2015. |
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| 300 | |a17 p. : |bcol. charts, col. ill., col. maps. |
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| 490 | 1 |aCurrent research, |x1701-4387 ; |v2015-8 |
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| 504 | |aIncludes bibliographical references. |
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| 520 | |a"The presence of offshore permafrost on the Canadian Beaufort Sea Shelf has long been recognized from seismic and borehole data. These thermal conditions could support a gas hydrate stability zone beneath the subsea permafrost. In this study we present the first evidence for the widespread occurrence of gas hydrate on the Beaufort Shelf using 3-D seismic data. A reflector was identified at a depth of ~1000 m that mimics some of the behaviour of the traditional bottom-simulating reflectors (BSRs) in marine gas hydrate regimes. However, the reflection is not truly bottom-simulating, as its depth is controlled by the thinning wedge of subsea permafrost. The reflection cross-cuts strata and marks a zone of enhanced reflectivity, possibly originating from free gas accumulated at this phase boundary. Implications of this widespread gas hydrate zone include: deep-drilling hazards associated with the free gas, potential overpressure, lateral fluid migration and associated seafloor expulsions"--Provided by publisher. |
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| 692 | 07|2gccst|aOcean floor |
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| 692 | 07|2gccst|aPermafrost |
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| 692 | 07|2gccst|aNatural gas |
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| 692 | 07|2gccst|aGeophysics |
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| 692 | 07|2gccst|aSeismology |
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| 700 | 1 |aRiedel, Michael. |
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| 710 | 1 |aCanada. |bNatural Resources Canada. |
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| 710 | 2 |aGeological Survey of Canada. |
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| 830 | #0|aCurrent research (Geological Survey of Canada)|x1701-4387 ; |v2015-8.|w(CaOODSP)9.506236 |
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| 856 | 40|qPDF|s13.87 MB|uhttps://publications.gc.ca/collections/collection_2016/rncan-nrcan/M44-2015-8-eng.pdf |
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