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  • 1
    Online Resource
    Online Resource
    Cham :Springer International Publishing AG,
    Keywords: Oceanography. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (599 pages)
    Edition: 1st ed.
    ISBN: 9783319209791
    Series Statement: Advances in Natural and Technological Hazards Research Series ; v.41
    DDC: 551.468
    Language: English
    Note: Intro -- Preface -- Contents -- Chapter 1: Submarine Mass Movements and Their Consequences: Progress and Challenges -- 1.1 Introduction -- 1.2 The 2015 Volume -- 1.2.1 Part I: Submarine Mass Movement in Margin Construction and Economic Significance -- 1.2.2 Part II: Failure Dynamics from Landslide Geomorphology -- 1.2.3 Part III: Geotechnical Aspects of Mass Movement -- 1.2.4 Part IV: Multidisciplinary Case Studies -- 1.2.5 Part V: Tectonics and Mass Movement Processes -- 1.2.6 Part VI: Fluid Flow and Gas Hydrates -- 1.2.7 Part VII: Mass Transport Deposits in Modern and Outcrop Sedimentology -- 1.2.8 Part VIII: Numerical and Statistical Analysis -- 1.2.9 Part IX: Tsunami Generation from Slope Failure -- 1.3 Looking to the Future -- References -- Part I: Submarine Mass Movement in Margin Construction and Economic Significance -- Chapter 2: The Role of Submarine Landslides in the Law of the Sea -- 2.1 Introduction -- 2.2 Case Studies -- 2.2.1 Rift Margins -- 2.2.1.1 Ireland, Porcupine Bank -- 2.2.1.2 Norway, Bear Island (Bjørnøya) and Franz-Victoria Trough Mouth Fans (TMF) -- 2.2.2 Transform Margins -- 2.2.2.1 France: French Guiana -- 2.2.3 Active Margins -- 2.2.3.1 Indonesia: Northwest Sumatra -- 2.3 Conclusions -- References -- Chapter 3: Fabric Development and Pore-Throat Reduction in a Mass-Transport Deposit in the Jubilee Gas Field, Eastern Gulf of ... -- 3.1 Introduction -- 3.2 Geologic Setting -- 3.3 Available Data and Methodology -- 3.4 Subsurface Expression of the Top-Seal MTD -- 3.5 Clay Fabric of the Top-Seal MTD: XRD, MICP, and XRTG Results -- 3.6 Discussion and Conclusion -- References -- Chapter 4: Seismic Geomorphology of the Israel Slump Complex in the Levant Basin (SE Mediterranean) -- 4.1 Introduction -- 4.2 Geological Setting -- 4.3 Dataset and Methodology -- 4.4 Geomorphology of the MTDs -- 4.5 Discussion and Conclusions. , References -- Chapter 5: Multiple Megaslide Complexes and Their Significance for the Miocene Stratigraphic Evolution of the Offshore Amazon ... -- 5.1 Introduction -- 5.1.1 Database and Methods -- 5.2 Results -- 5.2.1 The Amap Megaslide Complex (AMC) -- 5.2.2 The Central Amazon Fan Megaslide Complex (CAFMC) -- 5.2.3 The Par-Maranhão Megaslide Complex (PMMC) -- 5.3 Discussion -- 5.4 Conclusions -- References -- Chapter 6: Kinematics of Submarine Slope Failures in the Deepwater Taranaki Basin, New Zealand -- 6.1 Introduction -- 6.2 Data and Methods -- 6.3 Geological Framework -- 6.4 Results and Interpretations -- 6.4.1 MTD 1 -- 6.4.2 MTD 2 -- 6.5 Discussion -- 6.6 Conclusions -- References -- Part II: Failure Dynamics from Landslide Geomorphology -- Chapter 7: Postglacial Mass Failures in the Inner Hardangerfjorden System, Western Norway -- 7.1 Introduction -- 7.2 Study Site and Geological Setting -- 7.3 Data and Methods -- 7.4 Main Observations and Interpretations -- 7.5 Discussion -- 7.6 Conclusions -- References -- Chapter 8: Onshore and Offshore Geomorphological Features of the El Golfo Debris Avalanche (El Hierro, Canary Islands) -- 8.1 Introduction -- 8.1.1 Geological and Geomorphological Setting -- 8.1.2 Methods -- 8.2 Results -- 8.2.1 Morphology and Backscatter Mapping -- 8.2.2 Seismic Mapping -- 8.3 Discussion and Conclusions -- References -- Chapter 9: New Insights on Failure and Post-failure Dynamics of Submarine Landslides on the Intra-slope Palmarola Ridge (Centr... -- 9.1 Introduction -- 9.2 Geological Setting -- 9.3 Data and Methods -- 9.4 Results -- 9.4.1 General Morphology of Palmarola Ridge -- 9.4.2 Landslide Scars and Deposits -- 9.5 Discussions and Conclusions -- References -- Chapter 10: Assessment of Canyon Wall Failure Process from Multibeam Bathymetry and Remotely Operated Vehicle (ROV) Observatio... -- 10.1 Introduction. , 10.2 Data -- 10.3 Results -- 10.3.1 Canyon Morphology and Exposed Lithologies -- 10.3.2 Benthic Communities -- 10.3.3 Failure Processes and Erosion -- 10.3.3.1 Cohesive Failure Processes -- 10.3.3.2 Erosion -- 10.4 ``Biomarkers´´ as Failure Timing and Magnitude Indicators -- 10.5 Future Work -- References -- Chapter 11: The Chuí Megaslide Complex: Regional-Scale Submarine Landslides on the Southern Brazilian Margin -- 11.1 Introduction and Backgrounds -- 11.2 Data and Methods -- 11.3 Results and Discussions -- 11.3.1 Geomorphological Characterization -- 11.3.2 Seismic Architecture and Depositional Features -- 11.3.3 Possible Preconditioning Parameters and Triggering Mechanisms -- 11.4 Conclusions -- References -- Chapter 12: Submarine Landslides and Incised Canyons of the Southeast Queensland Continental Margin -- 12.1 Introduction -- 12.2 Study Area Location and Bathymetric Features -- 12.3 Sediment Sample Characteristics and Ages -- 12.3.1 Dredge Sample Ages -- 12.3.2 Core Sample Ages -- 12.4 Discussion and Conclusions -- References -- Chapter 13: Novel Method to Map the Morphology of Submarine Landslide Headwall Scarps Using Remotely Operated Vehicles -- 13.1 Introduction -- 13.2 Rockall Bank -- 13.3 Method -- 13.3.1 Data Collection -- 13.3.2 Data Processing -- 13.4 Results -- 13.5 Interpretation and Discussion -- 13.6 Conclusions and Further Work -- References -- Chapter 14: Flow Behaviour of a Giant Landslide and Debris Flow Entering Agadir Canyon, NW Africa -- 14.1 Introduction -- 14.2 Methods -- 14.3 Results -- 14.3.1 The Headwall Area and the Slide Fairway -- 14.3.2 Slide Fairway into Lower Agadir Canyon -- 14.4 Discussion and Conclusion -- References -- Chapter 15: Fine-Scale Morphology of Tubeworm Slump, Monterey Canyon -- 15.1 Introduction -- 15.2 Methods -- 15.3 Results -- 15.3.1 Surface of Smooth Ridge Surrounding Tubeworm Slump. , 15.3.2 Main Headwall Scarp -- 15.3.3 Sole of Slide Scar -- 15.4 Discussion and Conclusions -- References -- Chapter 16: Submarine Slide Topography and the Distribution of Vulnerable Marine Ecosystems: A Case Study in the Ionian Sea (E... -- 16.1 Introduction -- 16.2 Submarine Slide Topography on the Ionian Margin -- 16.3 Deep-Sea Habitats of the Ionian Margin and Relationships with Landslide Morphologies -- 16.4 Economic Significance of Submarine Landslide Areas -- References -- Part III: Geotechnical Aspects of Mass Movement -- Chapter 17: Shear Strength of Siliciclastic Sediments from Passive and Active Margins (0-100m Below Seafloor): Insights into S... -- 17.1 Background and Significance -- 17.2 Global Shear Strength Trends -- 17.3 Ideal Type Sites -- 17.4 Hydrostatic Pore Pressure Conditions at Type Sites -- 17.5 Continental Margin Sediment Shear Strength -- References -- Chapter 18: A Small Volume Calibration Chamber for Cone Penetration Testing (CPT) on Submarine Soils -- 18.1 Introduction -- 18.2 Methods -- 18.2.1 New MARCC Calibration Chamber Design -- 18.2.2 Sensors, Control and Measurement Devices -- 18.3 Results -- 18.3.1 Specimen Preparation and Cuxhaven Test Sand -- 18.3.2 Laboratory CPT Experiments -- 18.4 Discussion -- 18.5 Conclusion and Outlook -- References -- Chapter 19: Underwater Mass Movements in Lake Mjøsa, Norway -- 19.1 Introduction -- 19.2 Methods -- 19.2.1 Morphology -- 19.2.2 Slope Stability -- 19.2.3 Discussion -- References -- Chapter 20: In Situ Cyclic Softening of Marine Silts by Vibratory CPTU at Orkdalsfjord Test Site, Mid Norway -- 20.1 Introduction -- 20.2 Geological Setting -- 20.3 Material and Methods -- 20.3.1 CPTU -- 20.3.2 Triaxial Laboratory Testing -- 20.4 Results -- 20.4.1 Geotechnical Characterization of Silt Layers -- 20.4.2 Cyclic Triaxial Response of Silt Layers -- 20.5 Discussion and Conclusion. , References -- Chapter 21: First Results of the Geotechnical In Situ Investigation for Soil Characterisation Along the Upper Slope Off Vester... -- 21.1 Landslides Along the Slope Off Vesterålen -- 21.2 Methods -- 21.2.1 Sub-bottom Mapping -- 21.2.2 CPTU Investigation of Slope Sediments -- 21.2.3 Pseudo-static Factor of Safety (FoS) -- 21.3 Results -- 21.3.1 Sedimentological and Geotechnical Characterisation of Slope Sediments -- 21.3.2 Pseudo-static Slope Stability Analysis -- 21.4 Discussion and Outlook -- References -- Chapter 22: A Novel Micro-shear Tester for Failure Analysis of Fine and Cohesive Granular Matter -- 22.1 Introduction -- 22.2 Characterization of the Calcium Carbonate Sample -- 22.3 Micro Shear Tester and X-ray Computed Tomography -- 22.3.1 Micro Shear Tester -- 22.3.2 X-ray Computed Tomography (XCT) -- 22.3.3 Combination of muST and XCT -- 22.4 Conclusion -- References -- Chapter 23: Knickpoint Migration Induced by Landslide: Evidence from Laboratory to Field Observations in Wabush Lake -- 23.1 Introduction -- 23.2 Wabush Lake -- 23.3 Methodology -- 23.3.1 Geotechnical Properties -- 23.3.2 Excess Pore Pressure and Stability Analysis -- 23.4 Results -- 23.4.1 Geotechnical Tests -- 23.4.2 Excess Pore Water Pressure and Stability Analysis -- 23.5 Discussion -- 23.6 Conclusion -- References -- Chapter 24: Multiple Flow Slide Experiment in the Westerschelde Estuary, The Netherlands -- 24.1 Introduction -- 24.2 Field Test Set-Up -- 24.3 Applied Instrumentation -- 24.4 Results and Conclusions -- References -- Part IV: Multidisciplinary Case Studies -- Chapter 25: Submarine Mass Wasting on Hovgaard Ridge, Fram Strait, European Arctic -- 25.1 Introduction -- 25.2 Study Area -- 25.3 Material and Methods -- 25.4 Results -- 25.4.1 Western Slope -- 25.4.2 Eastern Slope -- 25.5 Discussion -- 25.6 Conclusions -- References. , Chapter 26: 3D Seismic Investigations of Pleistocene Mass Transport Deposits and Glacigenic Debris Flows on the North Sea Fan,.
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  • 2
    Keywords: Earth sciences ; Earth Sciences ; Sedimentology ; Oceanography ; Natural disasters ; Geotechnical engineering ; Physical geography ; Earth sciences ; Sedimentology ; Oceanography ; Natural disasters ; Geotechnical engineering ; Physical geography ; Konferenzschrift 2015 ; Submarine Gleitung ; Meeresgeologie ; Submarine Gleitung ; Massenbewegung ; Meeresgeologie ; Meeresboden ; Suspensionsströmung ; Submarine Gleitung ; Turbidit
    Description / Table of Contents: 1. Submarine Mass Movements and Their Consequences: Progress and Challenges -- Part I Submarine Mass Movement in Margin Construction and Economic Significance2. The Role of Submarine Landslides in the Law of the Sea -- 3. Fabric Development and Pore-Throat Reduction in a Mass-Transport Deposit in the Jubilee Gas Field, Eastern Gulf of Mexico: Consequences for the Sealing Capacity of MTDs -- 4. Seismic geomorphology of the Israel Slump Complex in the central Levant Basin (SE Mediterranean) -- 5. Multiple Megaslide Complexes and their Significance for the Miocene stratigraphic evolution of the offshore Amazon Basin -- 6. Kinematics of submarine slope failures in the deepwater Taranaki Basin, New Zealand -- Part II Failure dynamics from landslide geomorphology -- 7. Postglacial Mass Failures in the Inner Hardangerfjorden System, Western Norway -- 8. Onshore and offshore geomorphological features of the El Golfo debris avalanche (El Hierro, Canary Islands) -- 9. New insights on failure and post-failure dynamics of submarine landslides on the intra-slope Palmarola ridge (Central Tyrrhenian Sea) -- 10. Assessment of Canyon Wall Failure Process from Multibeam Bathymetry and Remotely Operated Vehicle (ROV) Observations, U.S. Atlantic Continental Margin -- 11. The Chuí Megaslide Complex: regional-scale submarine landslides on the Southern Brazilian Margin -- 12. Submarine landslides and incised canyons of the southeast Queensland continental margin -- 13. Novel method to map the morphology of submarine landslide headwall scarps using Remotely Operated Vehicles -- 14. Flow behaviour of a giant landslide and debris flow entering Agadir Canyon, NW Africa -- 15. Fine-Scale Morphology of Tubeworm Slump, Monterey Canyon -- 16. Submarine slide topography and the Distribution of Vulnerable Marine Ecosystems: A Case Study in the Ionian Sea (Eastern Mediterranean) -- Part III Geotechnical aspects of mass movement -- 17. Shear Strength of Siliciclastic Sediments from Passive and Active Margins (0-100 meters below seafloor): Insights into Seismic Strengthening -- 18. A small volume calibration chamber for cone penetration testing (CPT) on submarine soils -- 19. Underwater Mass Movements in Lake Mjøsa, Norway -- 20. In situ cyclic softening of marine silts by vibratory CPTU at Orkdalsfjord test site, mid Norway -- 21. First results of the geotechnical in situ investigation for soil characterisation along the upper slope off Vesterålen - Northern Norway -- 22. A novel micro-shear tester for failure analysis of fine and cohesive granular matter -- 23. Knickpoint migration induced by landslide: Evidence from laboratory to field observations in Wabush Lake -- 24. Multiple flow slide experiment in the Westerschelde Estuary, The Netherlands -- Part IV Multidisciplinary case studies -- 25. Submarine mass wasting on Hovgaard Ridge, Fram Strait, European Arctic -- 26. 3D seismic investigations of Pleistocene Mass Transport Deposits and Glacigenic Debris Flows on the North Sea Fan, NE Atlantic Margin -- 27. Do embedded volcaniclastic layers serve as potential glide planes? – An integrated analysis from the Gela Basin offshore southern Sicily -- 28. Sediment failure affecting muddy contourites on the continental slope offshore northern Norway – lessons learned and some outstanding issues -- 29. Mass Wasting History within Lake Ohrid Basin (Albania/Macedonia) over the last 600ka -- 30. Implications of Sediment Dynamics in Mass Transport along the Pianosa Ridge (Northern Tyrrhenian Sea) -- 31. Late-Holocene Mass Movements in High Arctic East Lake, Melville Island (Western Canadian Arctic Archipelago) -- 32. Pleistocene Mass Transport Complexes off Barbados accretionary prism (Lesser Antilles) -- 33. Exploring the Influence of Deepwater Currents as Potential Triggers for Slope Instability -- Part V Tectonics and mass movements -- 34. French alpine foreland Holocene paleoseismicity revealed by coeval mass wasting deposits in glacial lakes -- 35. Spatial and temporal relation of submarine landslides and faults along the Israeli continental slope, eastern Mediterranean -- 36. Earthquake induced landslides in Lake Éternité, Québec, Canada -- 37. Large Mass Transport Deposits in Kumano Basin, Nankai Trough, Japan -- 38. Insights into Effectiveness of Simplified Seismic Displacement Procedures to Evaluate Earthquake Behavior of a Deepwater Slope -- Part VI Fluid flow and gas hydrates -- 39. Deriving the Rate of Salt Rise at the Cape Fear Slide Using New Seismic Data -- 40. Submarine slope instabilities coincident with shallow gas hydrate systems: insights from New Zealand examples -- 41. Eel Canyon Slump Scar and Associated Fluid Venting -- 42. Shallow gas and the development of a weak layer in submarine spreading, Hikurangi margin (New Zealand) -- 43. Stability of fine-grained sediments subject to gas hydrate dissociation in the Arctic continental margin -- Part VII Mass transport deposits in modern and outcrop sedimentology -- 44. Soft-sediment deformation associated with mass transport deposits of the aAnsa basin (Spanish Pyrenees) -- 45. Synsedimentary tectonics and mass wasting along the Alpine margin in Liassic time -- 46. Meso-scale kinematic indicators in exhumed mass transport deposits: definitions and implications -- 47. Morphodynamics of supercritical turbidity currents in the channel-lobe transition zone -- 48. Tiny fossils, big impact: the role of foraminifera-enriched condensed section in arresting the movement of a large retrogressive submarine landslide in the Gulf of Mexico -- 49. Inclusion of substrate blocks within a mass transport deposit: A case study from Cerro Bola, Argentina -- Part VIII Numerical and statistical analysis -- 50. GIS catalogue of submarine landslides in the Spanish Continental Shelf: potential and difficulties for susceptibility assessment -- 51. Tempo and triggering of large submarine landslides – Statistical analysis for hazard assessment -- 52. Morphological controls on submarine slab failures -- 53. Incorporating Correlated Variables into GIS-Based Probabilistic Submarine Slope Stability Assessments -- 54. Quantifying the key role of slope material peak strength – using Discrete Element simulations -- 55. Correction Factors for 1-D Runout Analyses of Selected Submarine Slides -- Part IX Tsunami generation from slope failure -- 56. Volcanic generation of tsunamis: Two New Zealand palaeo-events -- 57. Tsunami-genesis due to retrogressive landslides on an inclined seabed -- 58. Geothermal System as the Cause of the 1979 Landslide Tsunami in Lembata Island, Indonesia -- 59. Towards a spatial probabilistic submarine landslide hazard model for submarine canyons -- 60. Coupled modelling of the failure and tsunami of a submarine debris avalanche offshore central New Zealand -- 61. Observations of coastal landslide-generated tsunami under an ice cover: the case of Lac-des-Seize-Îles, Québec, Canada -- Index.
    Type of Medium: Online Resource
    Pages: Online-Ressource (XIII, 621 p. 256 illus., 219 illus. in color, online resource)
    Edition: 1st ed. 2016
    ISBN: 9783319209791
    Series Statement: Advances in Natural and Technological Hazards Research 41
    RVK:
    Language: English
    Note: 1. Submarine Mass Movements and Their Consequences: Progress and ChallengesPart  I Submarine Mass Movement in Margin Construction and Economic Significance2. The Role of Submarine Landslides in the Law of the Sea -- 3. Fabric Development and Pore-Throat Reduction in a Mass-Transport Deposit in the Jubilee Gas Field, Eastern Gulf of Mexico: Consequences for the Sealing Capacity of MTDs -- 4. Seismic geomorphology of the Israel Slump Complex in the central Levant Basin (SE Mediterranean) -- 5. Multiple Megaslide Complexes and their Significance for the Miocene stratigraphic evolution of the offshore Amazon Basin -- 6. Kinematics of submarine slope failures in the deepwater Taranaki Basin, New Zealand -- Part II Failure dynamics from landslide geomorphology -- 7. Postglacial Mass Failures in the Inner Hardangerfjorden System, Western Norway -- 8. Onshore and offshore geomorphological features of the El Golfo debris avalanche (El Hierro, Canary Islands) -- 9. New insights on failure and post-failure dynamics of submarine landslides on the intra-slope Palmarola ridge (Central Tyrrhenian Sea) -- 10. Assessment of Canyon Wall Failure Process from Multibeam Bathymetry and Remotely Operated Vehicle (ROV) Observations, U.S. Atlantic Continental Margin -- 11. The Chuí Megaslide Complex: regional-scale submarine landslides on the Southern Brazilian Margin -- 12. Submarine landslides and incised canyons of the southeast Queensland continental margin -- 13. Novel method to map the morphology of submarine landslide headwall scarps using Remotely Operated Vehicles -- 14. Flow behaviour of a giant landslide and debris flow entering Agadir Canyon, NW Africa -- 15. Fine-Scale Morphology of Tubeworm Slump, Monterey Canyon -- 16. Submarine slide topography and the Distribution of Vulnerable Marine Ecosystems: A Case Study in the Ionian Sea (Eastern Mediterranean) -- Part III Geotechnical aspects of mass movement -- 17. Shear Strength of Siliciclastic Sediments from Passive and Active Margins (0-100 meters below seafloor): Insights into Seismic Strengthening -- 18. A small volume calibration chamber for cone penetration testing (CPT) on submarine soils -- 19. Underwater Mass Movements in Lake Mjøsa, Norway -- 20. In situ cyclic softening of marine silts by vibratory CPTU at Orkdalsfjord test site, mid Norway -- 21. First results of the geotechnical in situ investigation for soil characterisation along the upper slope off Vesterålen - Northern Norway -- 22. A novel micro-shear tester for failure analysis of fine and cohesive granular matter -- 23. Knickpoint migration induced by landslide: Evidence from laboratory to field observations in Wabush Lake -- 24. Multiple flow slide experiment in the Westerschelde Estuary, The Netherlands -- Part IV Multidisciplinary case studies -- 25. Submarine mass wasting on Hovgaard Ridge, Fram Strait, European Arctic -- 26. 3D seismic investigations of Pleistocene Mass Transport Deposits and Glacigenic Debris Flows on the North Sea Fan, NE Atlantic Margin -- 27. Do embedded volcaniclastic layers serve as potential glide planes? - An integrated analysis from the Gela Basin offshore southern Sicily -- 28. Sediment failure affecting muddy contourites on the continental slope offshore northern Norway - lessons learned and some outstanding issues -- 29. Mass Wasting History within Lake Ohrid Basin (Albania/Macedonia) over the last 600ka -- 30. Implications of Sediment Dynamics in Mass Transport along the Pianosa Ridge (Northern Tyrrhenian Sea) -- 31. Late-Holocene Mass Movements in High Arctic East Lake, Melville Island (Western Canadian Arctic Archipelago) -- 32. Pleistocene Mass Transport Complexes off Barbados accretionary prism (Lesser Antilles) -- 33. Exploring the Influence of Deepwater Currents as Potential Triggers for Slope Instability -- Part V Tectonics and mass movements -- 34. French alpine foreland Holocene paleoseismicity revealed by coeval mass wasting deposits in glacial lakes -- 35. Spatial and temporal relation of submarine landslides and faults along the Israeli continental slope, eastern Mediterranean -- 36. Earthquake induced landslides in Lake Éternité, Québec, Canada -- 37. Large Mass Transport Deposits in Kumano Basin, Nankai Trough, Japan -- 38. Insights into Effectiveness of Simplified Seismic Displacement Procedures to Evaluate Earthquake Behavior of a Deepwater Slope -- Part VI Fluid flow and gas hydrates -- 39. Deriving the Rate of Salt Rise at the Cape Fear Slide Using New Seismic Data -- 40. Submarine slope instabilities coincident with shallow gas hydrate systems: insights from New Zealand examples -- 41. Eel Canyon Slump Scar and Associated Fluid Venting -- 42. Shallow gas and the development of a weak layer in submarine spreading, Hikurangi margin (New Zealand) -- 43. Stability of fine-grained sediments subject to gas hydrate dissociation in the Arctic continental margin -- Part VII Mass transport deposits in modern and outcrop sedimentology -- 44. Soft-sediment deformation associated with mass transport deposits of the aAnsa basin (Spanish Pyrenees) -- 45. Synsedimentary tectonics and mass wasting along the Alpine margin in Liassic time -- 46. Meso-scale kinematic indicators in exhumed mass transport deposits: definitions and implications -- 47. Morphodynamics of supercritical turbidity currents in the channel-lobe transition zone -- 48. Tiny fossils, big impact: the role of foraminifera-enriched condensed section in arresting the movement of a large retrogressive submarine landslide in the Gulf of Mexico -- 49. Inclusion of substrate blocks within a mass transport deposit: A case study from Cerro Bola, Argentina -- Part VIII Numerical and statistical analysis -- 50. GIS catalogue of submarine landslides in the Spanish Continental Shelf: potential and difficulties for susceptibility assessment -- 51. Tempo and triggering of large submarine landslides - Statistical analysis for hazard assessment -- 52. Morphological controls on submarine slab failures -- 53. Incorporating Correlated Variables into GIS-Based Probabilistic Submarine Slope Stability Assessments -- 54. Quantifying the key role of slope material peak strength - using Discrete Element simulations -- 55. Correction Factors for 1-D Runout Analyses of Selected Submarine Slides -- Part IX Tsunami generation from slope failure -- 56. Volcanic generation of tsunamis: Two New Zealand palaeo-events -- 57. Tsunami-genesis due to retrogressive landslides on an inclined seabed -- 58. Geothermal System as the Cause of the 1979 Landslide Tsunami in Lembata Island, Indonesia -- 59. Towards a spatial probabilistic submarine landslide hazard model for submarine canyons -- 60. Coupled modelling of the failure and tsunami of a submarine debris avalanche offshore central New Zealand -- 61. Observations of coastal landslide-generated tsunami under an ice cover: the case of Lac-des-Seize-Îles, Québec, Canada -- Index.
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  • 3
    ISSN: 1573-0581
    Keywords: New Zealand ; Puysegur Trench ; Puysegur Ridge ; swath bathymetry ; oblique subduction ; strike-slip
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The Geodynz-sud cruise on board the R/V l'Atalante collected bathymetric, side-scan sonar and seismic reflection data along the obliquely convergent boundary between the Australian and Pacific plates southwest of the South Island, New Zealand. The survey area extended from 44°05′ S to 49°40′ S, covering the transition zone between the offshore extension of the Alpine Fault and the Puysegur Trench and Puysegur Ridge. Based on variations in the nature and structure of the crust on either side of the margin, the plate boundary zone can be divided into three domains with distinctive structural and sedimentary characteristics. The northern domain involves subduction of probably thinned continental crust of the southern Challenger Plateau beneath the continental crust of Fiordland. It is characterized by thick sediments on the downgoing slab and a steep continental slope disrupted by fault scarps and canyons. The middle domain marks the transition between subduction of likely continental and oceanic crust defined by a series of en echelon ridges on the downgoing slab. This domain is characterized by a large collapse terrace on the continental slope which appears to be due to the collision of the en echelon ridges with the plate margin. The southern domain involves subduction of oceanic crust beneath continental and oceanic crust. This domain is characterized by exposed fabric of seafloor spreading on the downgoing slab, a steep inner trench wall and linear ridges and valleys on the Puysegur ridge crest. The data collected on this cruise provide insights into the nature and history of both plates, and factors influencing the distribution of strike-slip and compressive strain and the evolution of subduction processes along a highly oblique convergent margin.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1573-0581
    Keywords: Oblique subduction ; strike-slip faults ; transpressive deformation ; tectonic erosion ; tectonic accretion ; seamount collision ; multibeam bathymetry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The southern Kermadec-Hikurangi convergent margin, east of New Zealand, accommodates the oblique subduction of the oceanic Hikurangi Plateau at rates of 4–5 cm/yr. Swath bathymetry and sidescan data, together with seismic reflection and geopotential data obtained during the GEODYNZ-SUD cruise, showed major changes in tectonic style along the margin. The changes reflect the size and abundance of seamounts on the subducting plateau, the presence and thickness of trench-fill turbidites, and the change to increasing obliquity and intracontinental transpression towards the south. In this paper, we provide evidence that faulting with a significant strike-slip component is widespread along the entire 1000 km margin. Subduction of the northeastern scrap of the Hikurangi Plateau is marked by an offset in the Kermadec Trench and adjacent margin, and by a major NW-trending tear fault in the scarp. To the south, the southern Kermadec Trench is devoid of turbidite fill and the adjacent margin is characterized by an up to 1200 m high scarp that locally separates apparent clockwise rotated blocks on the upper slope from strike-slip faults and mass wasting on the lower slope. The northern Hikurangi Trough has at least 1 km of trench-fill but its adjacent margin is characterized by tectonic erosion. The toe of the margin is indented by 10–25 km for more than 200 km, and this is inferred to be the result of repeated impacts of the large seamounts that are abundant on the northern Hikurangi Plateau. The two most recent impacts have left major indentations in the margin. The central Hikurangi margin is characterized by development of a wide accretionary wedge on the lower slope, and by transpression of presubduction passive margin sediments on the upper slope. Shortening across the wedge together with a component of strike-slip motion on the upper slope supports an interpretation of some strain partitioning. The southern Hikurangi margin is a narrow, mainly compressive belt along a very oblique, apparently locked subduction zone.
    Type of Medium: Electronic Resource
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  • 5
    Publication Date: 2018-02-14
    Description: Despite many of years of mapping effort, only a small fraction of the world ocean’s seafloor has been sampled for depth, greatly limiting our ability to explore and understand critical ocean and seafloor processes. Recognizing this poor state of our knowledge of ocean depths and the critical role such knowledge plays in understanding and maintaining our planet, GEBCO and the Nippon Foundation have joined forces to establish the Nippon Foundation GEBCO Seabed 2030 Project, an international effort with the objective of facilitating the complete mapping of the world ocean by 2030. The Seabed 2030 Project will establish globally distributed regional data assembly and coordination centers (RDACCs) that will identify existing data from their assigned regions that are not currently in publicly available databases and seek to make these data available. They will develop protocols for data collection (including resolution goals) and common software and other tools to assemble and attribute appropriate metadata as they assimilate regional grids using standardized techniques. A Global Data Assembly and Coordination Center (GDACC) will integrate the regional grids into a global grid and distribute to users world-wide. The GDACC will also act as the central focal point for the coordination of common data standards and processing tools as well as the outreach coordinator for Seabed 2030 efforts. The GDACC and RDACCs will collaborate with existing data centers and bathymetric compilation efforts. Finally, the Nippon Foundation GEBCO Seabed 2030 Project will encourage and help coordinate and track new survey efforts and facilitate the development of new and innovative technologies that can increase the efficiency of seafloor mapping and thus make the ambitious goals of Seabed 2030 more likely to be achieved.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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  • 6
    Publication Date: 2019-11-30
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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  • 7
    Publication Date: 2016-01-19
    Description: Recent years have seen a steady increase in gas hydrate-related research in New Zealand, driven by several large-scale projects and strong international collaboration. The Hikurangi Margin, east of New Zealand’s North Island, is the country’s premier gas hydrate province. Here, much of the research has been focused on processes surrounding methane seepage out of the sea floor and on geological conditions that are likely to promote the deposition of concentrated hydrate deposits. Studies into submarine erosion and landslides related to gas hydrate systems have also been a major focus in this province. In particular, flattened ridge tops and submarine mass wasting deposits have been investigated that appear to be related to the up-slope termination of gas hydrate stability. Research is also being carried out to characterise animal communities of the seabed where methane seepage occurs, in order to provide ecological risk assessments for drilling activities. Elsewhere on New Zealand’s continental margins research is also accelerating. Several “frontier” basins around New Zealand are currently being explored with respect to their potential for hosting attractive gas hydrate deposits. A primary focus is to identify and characterise key elements of favourable depositional environments, with a longer-term aim of gas hydrate exploration drilling.
    Type: Conference or Workshop Item , NonPeerReviewed
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  • 8
    Publication Date: 2017-08-08
    Description: The imbricated frontal wedge of the central Hikurangi subduction margin is characteristic of wide (ca. 150 km), poorly drained and over pressured, low taper (not, vert, similar 4°) thrust systems associated with a relatively smooth subducting plate, a thick trench sedimentary sequence (not, vert, similar 3–4 km), weak basal décollement, and moderate convergence rate (not, vert, similar 40 mm/yr). New seismic reflection and multibeam bathymetric data are used to interpret the regional tectonic structures, and to establish the geological framework for gas hydrates and fluid seeps. We discuss the stratigraphy of the subducting and accreting sequences, characterize stratigraphically the location of the interplate décollement, and describe the deformation of the upper plate thrust wedge together with its cover sequence of Miocene to Recent shelf and slope basin sediments. We identify approximately the contact between an inner foundation of deforming Late Cretaceous and Paleogene rocks, in which widespread out-of-sequence thrusting occurs, and a 65–70 km-wide outer wedge of late Cenozoic accreted turbidites. Although part of a seamount ridge is presently subducting beneath the deformation front at the widest part of the margin, the morphology of the accretionary wedge indicates that frontal accretion there has been largely uninhibited for at least 1–2 Myr. This differs from the offshore Hawkes Bay sector of the margin to the north where a substantial seamount with up to 3 km of relief has been subducted beneath the lower margin, resulting in uplift and complex deformation of the lower slope, and a narrow (10–20 km) active frontal wedge. Five areas with multiple fluid seep sites, referred to informally as Wairarapa, Uruti Ridge, Omakere Ridge, Rock Garden, and Builders Pencil, typically lie in 700–1200 m water depth on the crests of thrust-faulted, anticlinal ridges along the mid-slope. Uruti Ridge sites also lie in close proximity to the eastern end of a major strike-slip fault. Rock Garden sites lie directly above a subducting seamount. Structural permeability is inferred to be important at all levels of the thrust system. There is a clear relationship between the seeps and major seaward-vergent thrust faults, near the outer edge of the deforming Cretaceous and Paleogene inner foundation rocks. This indicates that thrust faults are primary fluid conduits and that poor permeability of the Cretaceous and Paleogene inner foundation focuses fluid flow to its outer edge. The sources of fluids expelling at active seep sites along the middle slope may include the inner parts of the thrust wedge and subducting sediments below the décollement. Within anticlinal ridges beneath the active seep sites there is a conspicuous break in the bottom simulating reflector (BSR), and commonly a seismically-resolvable shallow fault network through which fluids and gas percolate to the seafloor. No active fluid venting has yet been recognized over the frontal accretionary wedge, but the presence of a widespread BSR, an extensive protothrust zone (〉 200 km by 20 km) in the Hikurangi Trough, and two unconfirmed sites of possible previous fluid expulsion, suggest that the frontal wedge could be actively dewatering. There are presently no constraints on the relative fluid flux between the frontal wedge and the active mid-slope fluid seeps. Article Outline
    Type: Article , PeerReviewed
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  • 9
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    In:  New Zealand Geophysical Society Newsletter, 73 . pp. 9-13.
    Publication Date: 2017-02-16
    Description: German Research Vessel R.V. Sonne visited New Zealand early this year to initiate a large collaborative research program involving IFM-GEOMAR (Germany), GNS Science and a number of New Zealand university. The aim of the project is to study gas hydrates in the offshore region of the North Island east coast, and in particular, to investigate local and regional processes of methane transport and the characterization of facies at cold vents and gas hydrate deposits along the Hikurangi margin. The survey included three legs from 11 January to 23 March 2007, during which a variety of geophysical, geochemical, biological and environmental data where acquired. The geophysical data will help investigate the structures, fluid flow conduits and possible connections to deeper fluid sources of vent sites.
    Type: Article , NonPeerReviewed
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  • 10
    Publication Date: 2013-11-05
    Type: Conference or Workshop Item , NonPeerReviewed
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