Keywords:
Mass-wasting -- Congresses.
;
Electronic books.
Description / Table of Contents:
Submarine mass movements represent major offshore geohazards due to their destructive, tsunami-generating potential; dangers that will only increase as sea levels rise. This volume features the latest scientific research into their features and consequences.
Type of Medium:
Online Resource
Pages:
1 online resource (763 pages)
Edition:
1st ed.
ISBN:
9789400721623
Series Statement:
Advances in Natural and Technological Hazards Research Series ; v.31
URL:
https://ebookcentral.proquest.com/lib/geomar/detail.action?docID=886030
Language:
English
Note:
Intro -- Submarine Mass Movements and Their Consequences -- Contents -- Contributors -- Chapter 1: Submarine Mass Movements and Their Consequences -- 1.1 Introduction -- 1.2 Part I: Physical Properties of Sediments and Slope Stability Assessment -- 1.3 Part II: Seafloor Geomorphology for Trigger Mechanisms and Landslide Dynamics -- 1.4 Part III: Role of Fluid Flow in Slope Instability -- 1.5 Part IV: Mechanics of Mass-Wasting in Subduction Margins -- 1.6 Part V: Post-failure Dynamics -- 1.7 Part VI: Landslide Generated Tsunamis -- 1.8 Part VII: Witnessing and Quasi-Witnessing of Slope Failures -- 1.9 Part VIII: Architecture of Mass Transport Deposits/Complexes -- 1.10 Part IX: Relevance of Natural Climate Change in Triggering Slope Failures -- 1.11 Future Perspectives -- References -- Part I: Physical Properties of Sediments and Slope Stability Assessment -- Chapter 2: Risk Assessment for Earthquake-Induced Submarine Slides -- 2.1 Introduction -- 2.2 Stability of Submarine Slopes Under Earthquake Loading -- 2.3 Factors Influencing Soil Strength Under Seismic Loading -- 2.3.1 Rapid Loss of Shear Strength and Liquefaction Phenomenon -- 2.3.2 Special Considerations for Clay Slopes Under Earthquake Loading -- 2.3.3 Effect of High-Frequency Cyclic Loading on Static Shear Strength -- 2.3.4 Effect of Cyclic Loading on Undrained Creep -- 2.4 Risk Assessment for Submarine Slides -- 2.4.1 Probabilistic Slope Stability Assessment -- 2.4.2 Estimation of Annual Probability of Slope Failure -- 2.4.3 Interpretation of Computed Static Failure Probability in a Bayesian Framework -- 2.5 Recommended Calculation Procedure -- 2.6 Discussion and Conclusion -- References -- Chapter 3: Shallow Landslides and Their Dynamics in Coastal and Deepwater Environments, Norway -- 3.1 Introduction -- 3.2 Geological Setting -- 3.3 Data and Methods.
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3.4 Results - From Geomorphology to Soil Properties and Stability -- 3.4.1 Coastal Environment - Sørfjorden (Finneidfjord) -- 3.4.2 Intermediate Water Depths - Vesterålen Margin -- 3.4.3 Deepwater Setting - Lofoten Margin -- 3.5 Discussion and Conclusions -- References -- Chapter 4: Physical Properties and Age of Continental Slope Sediments Dredged from the Eastern Australian Continental Margin - Implications for Timing of Slope Failure -- 4.1 Introduction -- 4.2 Study Area -- 4.3 Results -- 4.3.1 Dredged Materials - Sedimentology and Geomechanical Properties -- 4.3.2 Palaeontology/Dating -- 4.3.3 Geomechanical Modeling -- 4.4 Discussion and a Hypothesis -- References -- Chapter 5: Submarine Landslides on the Upper Southeast Australian Passive Continental Margin - Preliminary Findings -- 5.1 Introduction -- 5.1.1 Study Area -- 5.2 Data and Methods -- 5.2.1 Bathymetry and Slide Geometry -- 5.2.2 Sediment Properties -- 5.3 Results and Interpretation -- 5.3.1 Sediment Properties -- 5.3.2 14 C Radiocarbon Ages -- 5.4 Modeling -- 5.5 Conclusions -- References -- Chapter 6: Development and Potential Triggering Mechanisms for a Large Holocene Landslide in the Lower St. Lawrence Estuary -- 6.1 Introduction -- 6.1.1 Objectives -- 6.2 Data and Methods -- 6.3 Morphology of the Betsiamites Slide Complex -- 6.4 Lithostratigraphy and Failure Surface -- 6.5 Movement Development -- 6.6 Triggering Mechanisms -- 6.7 Concluding Remarks and Future Work -- References -- Chapter 7: Spatially Fixed Initial Break Point and Fault-Rock Development in a Landslide Area -- 7.1 Introduction -- 7.2 Setting -- 7.3 Methods -- 7.3.1 Tilt and Groundwater Level Measurement -- 7.3.2 Core Analysis -- 7.3.3 Detailed Monitoring During Slipa -- 7.4 Results -- 7.4.1 Dilation and Slip -- 7.4.2 Core Analysis -- 7.5 Summary -- References.
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Chapter 8: Pore Water Geochemistry as a Tool for Identifying and Dating Recent Mass-Transport Deposits -- 8.1 Introduction -- 8.2 Study Area -- 8.3 Material and Methods -- 8.4 Results and Discussion -- 8.4.1 Pore Water Profiles at Potential MTD Sites -- 8.4.2 Geochemical Transport/Reaction Modeling -- 8.5 Conclusions -- References -- Chapter 9: An In-Situ Free-Fall Piezocone Penetrometer for Characterizing Soft and Sensitive Clays at Finneidfjord (Northern Norway) -- 9.1 Introduction -- 9.2 Setting -- 9.3 Material and Methods -- 9.4 Results -- 9.4.1 Comparison of FF-CPTU and Pushed CPTU Tests -- 9.4.2 Laboratory Analyses -- 9.4.3 Comparison of In-Situ and Laboratory Results -- 9.5 Discussion and Conclusion -- References -- Chapter 10: Static and Cyclic Shear Strength of Cohesive and Non-cohesive Sediments -- 10.1 Introduction -- 10.2 Methods -- 10.2.1 Research Approach -- 10.2.2 Sample Description -- 10.2.3 Testing Procedure -- 10.2.4 Data Acquisition and Analysis -- 10.3 Results and Discussion -- 10.3.1 Exemplary Cyclic Test Results -- 10.3.2 Generic Study -- 10.3.3 Case Study -- 10.4 Conclusion -- References -- Chapter 11: Upstream Migration of Knickpoints: Geotechnical Considerations -- 11.1 Introduction -- 11.2 Experimental Setup and Method -- 11.3 Results -- 11.4 Discussion -- 11.5 Conclusion -- References -- Part II: Seafloor Geomorphology for Trigger Mechanisms and Landslide Dynamics -- Chapter 12: A Reevaluation of the Munson-Nygren-Retriever Submarine Landslide Complex, Georges Bank Lower Slope, Western North Atlantic -- 12.1 Introduction -- 12.1.1 Data -- 12.2 Results and Interpretations -- 12.2.1 Munson-Nygren Slide -- 12.2.2 Retriever Slide -- 12.2.3 Picket Slide -- 12.3 Age of Slope Failure -- References -- Chapter 13: Submarine Landslides in Arctic Sedimentation: Canada Basin -- 13.1 Introduction -- 13.1.1 Regional Geology.
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13.1.2 Methods -- 13.2 Results -- 13.2.1 Canadian Archipelago Slope and Rise -- 13.2.2 MacKenzie-Beaufort Slope and Rise -- 13.3 Discussion and Conclusions -- References -- Chapter 14: Extensive Erosion of the Deep Seafloor - Implications for the Behavior of Flows Resulting from Continental Slope Instability -- 14.1 Introduction -- 14.2 Areas of Erosion by Gravity Currents -- 14.3 Areas of Deposition from Gravity Currents -- 14.4 Discussion -- 14.5 Conclusions -- References -- Chapter 15: Investigations of Slides at the Upper Continental Slope Off Vesterålen, North Norway -- 15.1 Introduction -- 15.2 Database -- 15.3 Landforms and Geological Setting -- 15.4 Results -- 15.4.1 Morphological Features -- 15.4.2 Seismic Stratigraphy, Slides and Failure Planes -- 15.4.3 X-Ray Images, Core Logging and Soil Mechanical Testing -- 15.5 Discussion -- 15.6 Summary and Conclusions -- References -- Chapter 16: Dakar Slide Offshore Senegal, NW-Africa: Interaction of Stacked Giant Mass Wasting Events and Canyon Evolution -- 16.1 Introduction -- 16.1.1 Structural Setting -- 16.1.2 Data -- 16.2 Results -- 16.2.1 Seismic Units and Stratigraphy -- 16.2.2 Dakar Slide -- 16.2.3 Older MTDs -- 16.2.4 Dakar Canyon -- 16.2.5 Sedimentary Ridges -- 16.3 Discussion -- 16.3.1 Dakar Slide: Age and Type of Failure -- 16.3.2 History of Mass Wasting Off Southern Senegal -- 16.3.3 Interaction Between Slope Failures and Canyons -- 16.4 Conclusion -- References -- Chapter 17: Large-Scale Mass Wasting on the Northwest African Continental Margin: Some General Implications for Mass Wasting on Passive Continental Margins -- 17.1 Introduction -- 17.2 Results and Interpretations -- 17.2.1 Sahara Slide -- 17.2.2 Cap Blanc Slide -- 17.2.3 Mauritania Slide Complex -- 17.2.4 Dakar Slide -- 17.3 Discussion -- 17.3.1 Mass Wasting Off Northwest Africa: Where and Why?.
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17.3.2 Timing of Landslides and Geohazard Potential -- 17.4 Conclusions -- References -- Chapter 18: Deep-Seated Bedrock Landslides and Submarine Canyon Evolution in an Active Tectonic Margin: Cook Strait, New Zealand -- 18.1 Introduction -- 18.2 Data Sets and Methodology -- 18.3 Results -- 18.3.1 Submarine Canyon Morphology -- 18.3.2 Landslides -- 18.3.2.1 Morphological Characteristics -- 18.3.2.2 Distribution -- 18.4 Discussion and Conclusions -- 18.4.1 Nature of Landslides -- 18.4.2 Causes of Landslides -- 18.4.3 Spatial Distribution of Landslides -- 18.4.4 Role of Landslides in Canyon Evolution -- References -- Chapter 19: Polyphase Emplacement of a 30 km 3 Blocky Debris Avalanche and Its Role in Slope-Gully Development -- 19.1 Introduction -- 19.2 Tectonic and Sedimentary Setting -- 19.3 Data and Methods -- 19.4 Stratigraphic and Morphological Analyses -- 19.5 PDA Emplacement and Upper Slope Gully Development -- 19.6 Summary -- References -- Chapter 20: Slope Failure and Canyon Development Along the Northern South China Sea Margin -- 20.1 Introduction -- 20.2 Regional Setting -- 20.3 Data and Methods -- 20.4 Results -- 20.4.1 Canyon Morphology -- 20.4.2 Slope Failure Features -- 20.5 Discussion -- 20.5.1 Canyon Origin -- 20.5.2 Implications for Geohazard Risk -- References -- Chapter 21: Distinguishing Sediment Bedforms from Sediment Deformation in Prodeltas of the Mediterranean Sea -- 21.1 Introduction -- 21.1.1 Regional Setting -- 21.1.2 Methods -- 21.2 Results -- 21.2.1 Morphology of Undulated Prodeltas -- 21.2.2 Seismostratigraphy of Prodelta Undulations -- 21.2.3 Physical Properties of Prodelta Undulations -- 21.2.4 Sediment Transport Processes on Undulated Prodeltas -- 21.3 Discussion and Conclusion -- References -- Chapter 22: Hydroacoustic Analysis of Mass Wasting Deposits in Lake Ohrid (FYR Macedonia/Albania) -- 22.1 Introduction.
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22.2 Seismic Stratigraphy and Slide Bodies.
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