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  • 1
    Monograph available for loan
    Monograph available for loan
    Gas hydrates : relevance to world margin stability and climate change (1998)
    London : The Geological Society
    Associated volumes
    Details Availability
    Call number: 9/M 99.0007 ; AWI G6-01-0167 ; M 99.0348Regal 7
    In: Geological Society special publication
    Description / Table of Contents: From a geological perspective, gas hydrates are an important feature of the shallow geosphere. If current estimates are correct, gas hydrates contain more potential fossil fuel energy than is present in conventional oil, gas and coal deposits, although it is uncertain how much of this can be exploited. They are also geological agents that affect the physical, geophysical and geochemical properties of sediments. Oceanic gas hydrates are increasingly recognized as a major potential ha~rd for the stability of offshore structures in various deep-water hydrocarbon provinces. The possibility also exists that a large release of methane from gas hydrates may have a significant impact on the radiative properties of the atmosphere and thus influence global Climatei past~ present and future, Following an introduction and overviews, this book covers; analysis .and modelling of hydrate formation; exploration strategy and reservoir evaluation; regional case studies; relevance to margin~stability and climate change. Hydrate research informatiloln is presented from the USA, Russia, South Asia and the European Union. The individual papers, drawing on hydrate research: by leading :European and American scentists, are well written, with extensive references and high quality graphs and figures. Thorough index. Recommended as a valuable state,of-the-art reference in natural gas hydrates, marine geology, and the environment for students in all the earth science disciplines.
    Type of Medium: Monograph available for loan
    Pages: VI, 338 S. , Ill., graph. Darst., Kt.
    ISBN: 186239010X
    Series Statement: Geological Society special publication 137
    URL: http://sp.lyellcollection.org/content/137/1
    Classification:
    A.3.1.
    Language: English
    Note: Introduction and Overviews --- J.-P. Henriet and J. Mienert: Gas Hydrates: the Gent debates. Outlook on research horizons and strategies / Geological Society, London, Special Publications, 137:1-8, doi:10.1144/GSL.SP.1998.137.01.01 --- K. A. Kvenvolden: A primer on the geological occurrence of gas hydrate / Geological Society, London, Special Publications, 137:9-30, doi:10.1144/GSL.SP.1998.137.01.02 --- E. D. Sloan, Jr: Physical/chemical properties of gas hydrates and application to world margin stability and climatic change / Geological Society, London, Special Publications, 137:31-50, doi:10.1144/GSL.SP.1998.137.01.03 --- Analysis and Modelling of Hydrate Formation --- G. D. Ginsburg: Gas hydrate accumulation in deep-water marine sediments / Geological Society, London, Special Publications, 137:51-62, doi:10.1144/GSL.SP.1998.137.01.04 --- A. W. Rempel and B. A. Buffett: Mathematical models of gas hydrate accumulation / Geological Society, London, Special Publications, 137:63-74, doi:10.1144/GSL.SP.1998.137.01.05 --- R. J. Bakker: Improvements in clathrate modelling II: the H2O-CO2-CH4-N2-C2H6 fluid system / Geological Society, London, Special Publications, 137:75-105, doi:10.1144/GSL.SP.1998.137.01.06 --- H. Lu and R. Matsumoto: Synthesis of CO2 hydrate in various CH3CO2Na/CH3CO2H pH buffer solutions / Geological Society, London, Special Publications, 137:107-111, doi:10.1144/GSL.SP.1998.137.01.07 --- Exploration Strategy and Reservoir Evaluation Methodology --- J. S. Booth, W. J. Winters, W. P. Dillon, M. B. Clennell, and M. M. Rowe: Major occurrences and reservoir concepts of marine clathrate hydrates: implications of field evidence / Geological Society, London, Special Publications, 137:113-127, doi:10.1144/GSL.SP.1998.137.01.08 --- D. Goldberg and S. Saito: Detection of gas hydrates using downhole logs / Geological Society, London, Special Publications, 137:129-132, doi:10.1144/GSL.SP.1998.137.01.09 --- J. W. Hobro, T. A. Minshull, and S. C. Singh: Tomographic seismic studies of the methane hydrate stability zone in the Cascadia Margin / Geological Society, London, Special Publications, 137:133-140, doi:10.1144/GSL.SP.1998.137.01.10 --- U. Tinivella, E. Lodolo, A. Camerlenghi, and G. Boehm: Seismic tomography study of a bottom simulating reflector off the South Shetland Islands (Antarctica) / Geological Society, London, Special Publications, 137:141-151, doi:10.1144/GSL.SP.1998.137.01.11 --- Worldwide Gas Hydrate Occurrences and Regional Case Studies --- C. K. Paull, W. S. Borowski, and N. M. Rodriguez: Marine gas hydrate inventory: preliminary results of ODP Leg 164 and implications for gas venting and slumping associated with the Blake Ridge gas hydrate field / Geological Society, London, Special Publications, 137:153-160, doi:10.1144/GSL.SP.1998.137.01.12 --- R. Thiéry, R. Bakker, and C. Monnin: Geochemistry of gas hydrates and associated fluids in the sediments of a passive continental margin. Preliminary results of the ODP Leg 164 on the Blake Outer Ridge / Geological Society, London, Special Publications, 137:161-165, doi:10.1144/GSL.SP.1998.137.01.13 --- G. J. De Lange and H.-J. Brumsack: The occurrence of gas hydrates in Eastern Mediterranean mud dome structures as indicated by pore-water composition / Geological Society, London, Special Publications, 137:167-175, doi:10.1144/GSL.SP.1998.137.01.14 --- J. M. Woodside, M. K. Ivanov, and A. F. Limonov: Shallow gas and gas hydrates in the Anaximander Mountains region, eastern Mediterranean Sea / Geological Society, London, Special Publications, 137:177-193, doi:10.1144/GSL.SP.1998.137.01.15 --- M. K. Ivanov, A. F. Limonov, and J. M. Woodside: Extensive deep fluid flux through the sea floor on the Crimean continental margin (Black Sea) / Geological Society, London, Special Publications, 137:195-213, doi:10.1144/GSL.SP.1998.137.01.16 --- S. V. Bouriak and A. M. Akhmetjanov: Origin of gas hydrate accumulations on the continental slope of the Crimea from geophysical studies / Geological Society, London, Special Publications, 137:215-222, doi:10.1144/GSL.SP.1998.137.01.17 --- D. Long, S. Lammers, and P. Linke: Possible hydrate mounds within large sea-floor craters in the Barents Sea / Geological Society, London, Special Publications, 137:223-237, doi:10.1144/GSL.SP.1998.137.01.18 --- M. Veerayya, S. M. Karisiddaiah, K. H. Vora, B. G. Wagle, and F. Almeida: Detection of gas-charged sediments and gas hydrate horizons along the western continental margin of India / Geological Society, London, Special Publications, 137:239-253, doi:10.1144/GSL.SP.1998.137.01.19 --- S. Neben, K. Hinz, and H. Beiersdorf: Reflection characteristics, depth and geographical distribution of bottom simulating reflectors within the accretionary wedge of Sulawesi / Geological Society, London, Special Publications, 137:255-265, doi:10.1144/GSL.SP.1998.137.01.20 --- G. Delisle, H. Beiersdorf, S. Neben, and D. Steinmann: The geothermal field of the North Sulawesi accretionary wedge and a model on BSR migration in unstable depositional environments / Geological Society, London, Special Publications, 137:267-274, doi:10.1144/GSL.SP.1998.137.01.21 --- Relevance to Margin Stability and Climatic Change --- J. Mienert, J. Posewang, and M. Baumann: Gas hydrates along the northeastern Atlantic margin: possible hydrate-bound margin instabilities and possible release of methane / Geological Society, London, Special Publications, 137:275-291, doi:10.1144/GSL.SP.1998.137.01.22 --- W. P. Dillon, W. W. Danforth, D. R. Hutchinson, R. M. Drury, M. H. Taylor, and J. S. Booth: Evidence for faulting related to dissociation of gas hydrate and release of methane off the southeastern United States / Geological Society, London, Special Publications, 137:293-302, doi:10.1144/GSL.SP.1998.137.01.23 --- B. U. Haq: Natural gas hydrates: searching for the long-term climatic and slope-stability records / Geological Society, London, Special Publications, 137:303-318, doi:10.1144/GSL.SP.1998.137.01.24 --- R. B. Thorpe, J. A. Pyle, and E.G. Nisbet: What does the ice-core record imply concerning the maximum climatic impact of possible gas hydrate release at Termination 1A? / Geological Society, London, Special Publications, 137:319-326, doi:10.1144/GSL.SP.1998.137.01.25 --- D. Raynaud, J. Chappellaz, and T. Blünier: Ice-core record of atmospheric methane changes: relevance to climatic changes and possible gas hydrate sources / Geological Society, London, Special Publications, 137:327-331, doi:10.1144/GSL.SP.1998.137.01.26
    Location: Reading room
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  • 2
    Electronic Resource
    Electronic Resource
    BOREHOLE SEISMIC PROFILING AND TUBE WAVE APPLICATIONS IN A DAM SITE INVESTIGATION (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 31 (1983), S. 0 
    Details
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: Continuous, single-channel reflection profiling has been carried out in PVC-lined boreholes, primarily with the aim of ascertaining the position of an old subsurface gas storage tunnel on a proposed dam site.Tube wave reflection patterns thus generated have been interpreted in terms of sediment rigidity and shear wave velocity, and these results could be compared with some independent data. It is interesting to note that, within the well section penetrating Tertiary clays, the velocity of the hydraulic transients apparently was not affected by the PVC casing, which might be explained by a tight coupling between casing and clay wall. In such situations, tube waves turn out a straightforward tool for the determination of shear wave velocity and the derivation of dynamic elastic moduli of unconsolidated sediments.Further applications of the study of the distribution of seismic velocities on the dam site dealt with the consolidation history of the clays. A level of abnormally low P-wave velocities has been detected and interpreted as a gas-charged horizon which, by its coincidence with the base level of clay diapirs, might be considered to have contributed to clay flowage in past geological times. Data about maximum past burial depth, derived from shear wave velocities, turned out to be in agreement with results from consolidation testing.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1983.tb01042.x
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  • 3
    Electronic Resource
    Electronic Resource
    DIRECT APPLICATIONS OF THE DAR ZARROUK PARAMETERS IN GROUND WATER SURVEYS (1976)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 24 (1976), S. 0 
    Details
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: The combination of layer resistivity and thickness in the so-called Dar Zarrouk parameters S and T may be of direct use in aquifer protection studies and for the evaluation of hydrologic properties of aquifers.The protective capacity of a clayey aquifer overburden is proportional to its longitudinal unit conductance S which, in terms of aquifer protection, gets a dimension of time (e.g. infiltration time). Aquifer storage in fissured reservoirs may be determined from differential conductance measurements (ΔS). Combination of the expression for ΔS with an empirical expression for electric conduction in fissured media yields a simple formula for water content per unit surface area. Both principles and possible developments are illustrated for a set of carboniferous limestone basins.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1976.tb00931.x
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  • 4
    Electronic Resource
    Electronic Resource
    Fluid-escape features as a precursor of a large sublacustrine sediment slide in Lake Le Bourget, NW Alps, France (2004)
    Oxford, UK : Blackwell Science Ltd
    Terra nova 16 (2004), S. 0 
    Details
    ISSN: 1365-3121
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: The north-western corner of Lake Le Bourget is situated along an active fault zone and accommodated a large sediment supply from the Rhone River until the end of the Late Glacial period. On the delta slope, the Holocene sheet drape that covers the largest buried mass wasting deposit (the HDU) shows undulations, small fractures and discontinuities that are attributed to downslope creep. Evidence for episodes of vigorous fluid expulsion is found in association with these discontinuities. All these features are rooted at the top of the HDU and occur along two specific isobaths. These observations indicate a close link between fractures and focused fluid flow. We suggest that focused fluid flow triggered by earthquakes facilitates the formation of small-scale faults that accommodate part of the downslope movement and eventually link up to form a head-scarp of a large slide (c. 107 m3).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3121.2004.00566.x
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  • 5
    Electronic Resource
    Electronic Resource
    Gas hydrate crystals may help build reefs (1998)
    [s.l.] : Macmillan Magazines Ltd.
    Nature 391 (1998), S. 648-649 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] During a recent cruise in the Porcupine Basin, off southwest Ireland, we discovered two extensive and hitherto largely unsuspected deep-water reef provinces, including a giant cluster of hundreds of buried mounds. The ring shapes of many reefs suggest that they are caused by an axial fluid ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/35530
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  • 6
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    Small mounded contourite drifts associated with deep-water coral banks, Porcupine Seabight, NE Atlantic Ocean (2007)
    In:  Geological Society Special Publication 276: 225-244.
    Details
    Publication Date: 2007-10-08
    Description: Numerous studies on sediment drifts have demonstrated a close interaction between sea-bed morphology, palaeoceanography, sediment supply and climate. Contourites have been reported in areas along continental margins directly influenced by the effect of intensive deep-water currents from the global conveyor belt. In this paper, we report the occurrence of a small-scale confined contourite drift from Porcupine Seabight, SW of Ireland, and its association with a province of coral banks. The Porcupine Basin is a relatively shallow, semi-enclosed basin characterized by the presence of cold-water coral bank provinces. These coral banks are often associated to a strong northward-flowing bottom current, created and steered by a complex interaction of the water mass characteristics, tidal influences and sea-bed morphology. Very high-resolution seismic stratigraphy allowed the identification of a small mounded drift, located between a depression created by (1) an irregular palaeotopography caused by a vigorous Late Pliocene erosion event and (2) a north-south alignment of coral banks. Core MD99-2327, taken on the flank of this drift mound, shows the variability of the bottom currents. Sortable silt data show several periods of bottom-current enhancement, which may be linked with warmer periods and an inferred influx of Mediterranean Outflow Water. The glacial part of the core has been interpreted as a muddy contourite with a high content of ice-rafted debris. The lower part of the core is a deep-water massive contourite sand resembling the present-day sea-floor sediments.
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  • 7
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    Carbonate mounds and slope failures in the Porcupine Basin: a development model involving fluid venting (2001)
    In:  Geological Society Special Publication 188: 375-383.
    Details
    Publication Date: 2001-01-01
    Description: High-resolution reflection seismic investigations carried out in the Porcupine Basin, SW of Ireland, have shed light on the presence of several provinces of giant carbonate mounds. An intriguing setting is found on the northern slope of the basin. A cluster of surface mounds appears to be flanked by a large upslope, crescent-shaped province of buried mounds. Below the transitional zone, large imbricated slide scars suggest repeated failures. The buried mounds rise from an undisturbed basal horizon and seem to represent a single event, confined in time and space. Both high-resolution and industrial seismic data reveal a close vertical match of the mound cluster with a lower, buried sea-bed failure, where hydrate build-up may have played a role. The latter association may not be entirely fortuitous. It is suggested that gas venting may have triggered the formation of the mound clusters, and that the underlying sea-bed failure forms a previous but different expression of gas venting, on a common, episodic fluid migration pathway but under strongly contrasting bottom water temperature conditions.
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  • 8
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    Sediment facies classification of a sandy shoreline by means of airborne imaging spectroscopy (2008)
    Taylor & Francis
    Details
    Publication Date: 2008-07-17
    Print ISSN: 0143-1161
    Electronic ISSN: 1366-5901
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Published by Taylor & Francis
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  • 9
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    Gas hydrate crystals may help build reefs (1998)
    Springer Nature
    Details
    Publication Date: 1998-02-01
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Springer Nature
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  • 10
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    Ice-rafting from the British–Irish ice sheet since the earliest Pleistocene (2.6 million years ago): implications for long-term mid-latitudinal ice-sheet growth in the North Atlantic region (2012)
    Elsevier
    Details
    Publication Date: 2012-06-01
    Print ISSN: 0277-3791
    Electronic ISSN: 1873-457X
    Topics: Geography , Geosciences
    Published by Elsevier
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