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  • Electronic books.  (3)
  • 04.02. Exploration geophysics  (2)
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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
    Online Resource
    Online Resource
    Cham :Springer International Publishing AG,
    Keywords: Mass-wasting. ; Electronic books.
    Description / Table of Contents: This book covers the geological, geophysical, engineering and environmental aspects of submarine slope failures. It focuses on understanding the full spectrum of challenges presented by this major coastal and offshore geohazard.
    Type of Medium: Online Resource
    Pages: 1 online resource (664 pages)
    Edition: 1st ed.
    ISBN: 9783319009728
    Series Statement: Advances in Natural and Technological Hazards Research Series ; v.37
    DDC: 551.468
    Language: English
    Note: Intro -- Preface -- Contents -- Part I Physical Properties of Sediments -- Chapter 1: Weak Layers: Their Definition and Classification from a Geotechnical Perspective -- 1.1 Introduction -- 1.2 Weak Layer Definition -- 1.3 Weak Layer Observations -- 1.4 Classification System from a Geotechnical Approach -- 1.5 Concluding Remarks -- References -- Chapter 2: Field Measurements to Investigate Submerged Slope Failures -- 2.1 Introduction -- 2.2 Interpretation Methods of Field Measurements -- 2.2.1 Relative Density -- 2.2.2 State Parameter -- 2.3 Application on Test Locations -- 2.4 Discussion -- 2.5 Conclusions and Recommendations -- References -- Chapter 3: Elemental Distribution and Microfabric Characterization Across a Buried Slump Scar: New Insights on the Long-Term Development and Reactivation of Scar Surfaces from a Microscopic Perspective -- 3.1 Introduction -- 3.2 Geological Setting -- 3.3 Investigation of Remineralization at the Unconformity -- 3.3.1 X-ray Computed Tomography (X-CT) -- 3.3.2 X-ray Fluorescence Spectroscopy (XRF) -- 3.3.3 Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray Analysis (EDX) -- 3.4 Discussion and Conclusion -- References -- Chapter 4: Evidence for Mass Transport Deposits at the IODP JFAST-Site in the Japan Trench -- 4.1 Introduction -- 4.2 Background and Geological Setting -- 4.3 Material and Methods -- 4.3.1 Bathymetric Mapping -- 4.3.2 Sediment Core -- 4.3.2.1 Physical Properties -- 4.3.2.2 Pore-Water Analyses -- 4.4 Results -- 4.5 Discussion -- 4.5.1 Evidencing Mass Transport Deposits at the JFAST-Site -- 4.5.2 Estimating the Age of the MTD Formation -- 4.6 Conclusions -- References -- Chapter 5: Preliminary Investigations of Rheological Properties of Busan Clays and Possible Implications for DebrisFlow Modelling -- 5.1 Introduction -- 5.2 Materials and Methods -- 5.3 Results. , 5.3.1 Rheological Behaviour of the Busan Clays -- 5.4 Discussion -- 5.5 Conclusions -- References -- Chapter 6: Utilizing Cone Penetration Tests for Landslide Evaluation -- 6.1 Introduction -- 6.2 Site Characterization -- 6.3 Methods -- 6.3.1 In-Situ CPT Measurements -- 6.3.2 Physical and Mechanical Properties -- 6.4 Results and Discussion -- 6.4.1 Static CPT -- 6.4.2 Vibratory CPT -- 6.4.3 Dissipation Test -- 6.4.4 Liquefaction Analysis with CLiq Software -- 6.5 Summary and Conclusion -- References -- Chapter 7: Geomechanical Characterization of Submarine Volcano-Flank Sediments, Martinique, Lesser Antilles Arc -- 7.1 Introduction -- 7.2 Geomechanical Characterization -- 7.3 Results -- 7.3.1 Summary of Hole Stratigraphy -- 7.3.2 Consolidation State -- 7.3.3 Hydraulic Conductivity -- 7.4 Discussion and Conclusion -- References -- Part II Gas Hydrates and Role of Interstitial Fluids in Submarine Slope Failure -- Chapter 8: Interrelationship Between Sediment Fabric, Pore Volume Variations as Indicator for Pore Pressure Changes, and Sediment Shear Strength -- 8.1 Introduction -- 8.2 Method -- 8.3 Results -- 8.4 Discussion -- 8.4.1 Interplay: Sediment Strength and Pore Volume Changes -- 8.4.1.1 Effect of Grain Shape Complexity -- 8.4.2 Local Pore Volume Changes -- 8.5 Conclusions -- References -- Chapter 9: Slope Instability of Glaciated Continental Margins: Constraints from Permeability-Compressibility Tests and Hydrogeological Modeling Off Storfjorden, NW Barents Sea -- 9.1 Introduction -- 9.2 Data and Methods -- 9.3 Results -- 9.4 Discussion -- 9.5 Conclusions -- References -- Chapter 10: Baiyun Slide and Its Relation to Fluid Migration in the Northern Slope of Southern China Sea -- 10.1 Introduction -- 10.2 Geological Setting -- 10.3 Data and Methods -- 10.4 Results -- 10.4.1 Morphology and Distribution of Baiyun Slide. , 10.4.2 Seismic Indications of Gas and Fluid Migration -- 10.4.2.1 Active Faults Related to Gas and Fluid Migration -- 10.4.2.2 Gas Chimneys -- 10.5 Discussion -- 10.5.1 Relationship Between Fluid Migration and Slope Stability -- 10.5.2 Possible Trigger Mechanisms -- 10.6 Conclusions -- References -- Chapter 11: Post-failure Processes on the Continental Slope of the Central Nile Deep-Sea Fan: Interactions Between Fluid Seepage, Sediment Deformation and Sediment-Wave Construction -- 11.1 Introduction -- 11.2 Methods -- 11.3 Results -- 11.3.1 Architecture and Age of MTDs and Slope Deposits -- 11.3.2 Seabed Sediment Undulations -- 11.3.3 Sediment Pathways -- 11.4 Discussion -- 11.4.1 End-Members: Sediment Waves Versus Deformation Structures -- 11.4.2 Post-failure Slope Evolution -- 11.5 Conclusion -- References -- Chapter 12: Fluid Seepage in Relation to Seabed Deformation on the Central Nile Deep-Sea Fan, Part 1: Evidence from Sidescan Sonar Data -- 12.1 Introduction -- 12.2 Methods -- 12.3 Results -- 12.3.1 Erosional Furrows -- 12.3.2 Sediment Cracks -- 12.3.3 Carbonate Pavements -- 12.3.4 Hydroacoustic Flares -- 12.4 Discussion -- 12.4.1 Mid-slope Domain: Focused Fluid Flow Through MTDs -- 12.4.2 Western Undulations: Fluid Flow Along Faults Rooted in MTDs -- 12.4.3 Eastern Undulations: Exhumation of Fossil Carbonates -- 12.5 Conclusions -- References -- Chapter 13: Fluid Seepage in Relation to Seabed Deformation on the Central Nile Deep-Sea Fan, Part 2: Evidence from Multibeam and Sidescan Imagery -- 13.1 Introduction -- 13.2 Methods -- 13.3 Results -- 13.3.1 Faults and Fluid Indicators on Sub-bottom Profiles -- 13.3.2 Seabed Backscatter Anomalies at Differing Frequencies -- 13.3.3 Water Column Gas Flares -- 13.4 Discussion -- 13.4.1 Growth and Burial of Carbonate Pavements -- 13.4.2 Fluid Migration Along Fault Planes -- 13.5 Conclusions -- References. , Part III Slope Stability and Risk Assessment -- Chapter 14: Advances in Offshore Seismic Slope Stability: A Case History -- 14.1 Introduction -- 14.2 Geomorphological and Geotechnical Data -- 14.2.1 Site Investigations -- 14.2.2 Geomorphological Setting -- 14.2.3 Geotechnical and Geophysical Data Integration -- 14.2.4 Soil Sampling -- 14.2.5 Advanced Laboratory Testing -- 14.3 Stability Analyses -- 14.3.1 Conventional Approach -- 14.3.2 Dynamic Approach -- 14.4 Conclusions -- References -- Chapter 15: Size-Frequency Relationship of Submarine Landslides at Convergent Plate Margins: Implications for Hazard and Risk Assessment -- 15.1 Introduction -- 15.2 Tectonic Setting of the MA and CC Convergent Margins -- 15.3 MA and CC Slumps and Slides: Observations and Data -- 15.4 Size-Frequency Relationships -- 15.5 Discussion and Conclusion -- References -- Chapter 16: A Numerical Investigation of Sediment Destructuring as a Potential Globally Widespread Trigger for Large Submarine Landslides on Low Gradients -- 16.1 Introduction -- 16.1.1 Destructuring of Cemented Hemipelagic Clay as a Source of Overpressure -- 16.1.2 Aims and Approach -- 16.2 Methodology -- 16.2.1 Material Model -- 16.2.2 Model Description -- 16.2.3 Assumptions and Limitations -- 16.3 Results -- 16.4 Discussion -- 16.5 Conclusion -- References -- Chapter 17: How Stable Is the Nice Slope? - An Analysis Based on Strength and Cohesion from Ring Shear Experiments -- 17.1 Introduction and Geological Setting -- 17.2 Methods -- 17.2.1 Coring and Sedimentological Analysis -- 17.2.2 Shear Experiments with the Ring Shear Apparatus -- 17.2.3 Stability Assessment of the Nice Slope Sediments -- 17.3 Results -- 17.3.1 Sedimentological Analysis and Physical Properties -- 17.3.2 Frictional Behavior of the Nice Slope Sediments -- 17.3.3 Stability Assessment of the Nice Slope Sediments -- 17.4 Discussion. , References -- Chapter 18: Regional Slope Stability Assessment Along the Caucasian Shelf of the Black Sea -- 18.1 Introduction -- 18.2 Geological Engineering Conditions Along the Caucasian Shelf of the Black Sea -- 18.3 Methods -- 18.4 Regional Submarine Slope Stability Assessment Based on 1D Modelling -- 18.5 Local Submarine Slope Stability Assessment Based on 1D Modelling -- 18.5.1 Dzhubga -- 18.5.2 Novomikhailovsky -- 18.5.3 Tuapse -- 18.5.4 Ashe -- 18.5.5 Shahe -- 18.5.6 Dagomis -- 18.5.7 Kudepsta -- 18.6 Discussion and Conclusion -- References -- Chapter 19: A Semi-empirical Method to Assess Flow-Slide Probability -- 19.1 Introduction -- 19.2 Failure Mechanisms -- 19.2.1 Static Liquefaction -- 19.2.2 Breach Flow-Slide -- 19.3 Physical-Based Models -- 19.3.1 Static Liquefaction -- 19.3.2 Breach Flow-Slide -- 19.3.3 Applicability of Physical-Based Models -- 19.4 Empirical Method -- 19.4.1 Basic Information and Mean Flow-Slide Frequency -- 19.4.2 General Applicability to Other Regions in the Netherlands -- 19.4.3 Influence of Local Soil Characteristics and Slope Geometry -- 19.5 Semi-empirical Method -- 19.5.1 Determination of P(ZVliquefaction) -- 19.5.2 Determination of P(ZVbreachflow) -- 19.6 Concluding Remarks -- References -- Chapter 20: Submarine Slope Stability Assessment of the Central Mediterranean Continental Margin: The Gela Basin -- 20.1 Introduction -- 20.2 Geological Setting -- 20.3 Material and Methods -- 20.3.1 Shipboard and Laboratory Analysis -- 20.3.2 Overpressure Estimation -- 20.3.3 Slope Stability Analysis -- 20.4 Results -- 20.4.1 Physical and Geotechnical Properties -- 20.4.2 Slope Stability Analysis -- 20.5 Discussion -- 20.5.1 Preconditioning Factors -- 20.5.2 Triggering Factors -- 20.6 Conclusions -- References -- Part IV Monitoring, Observation and Repeated Surveys of Active Slope Failure Processes. , Chapter 21: The 1930 Landslide in Orkdalsfjorden: Morphology and Failure Mechanism.
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  • 3
    Online Resource
    Online Resource
    Cham :Springer International Publishing AG,
    Keywords: Submarine topography. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (554 pages)
    Edition: 1st ed.
    ISBN: 9783319578521
    Series Statement: Springer Geology Series
    DDC: 551.4683
    Language: English
    Note: Intro -- Foreword -- Acknowledgements -- Contents -- 1 Introduction -- 1 Our Blue Planet -- 2 Submarine Geomorphology -- 3 History of Submarine Geomorphology -- References -- Data and Methods in Submarine Geomorphology -- 2 Sidescan Sonar -- Abstract -- 1 History of Sonar -- 2 Principles of Sidescan Sonar -- 3 State of the Art -- 4 Strengths and Weaknesses -- 5 Future Developments -- Acknowledgements -- References -- 3 Multibeam Echosounders -- Abstract -- 1 Introduction -- 1.1 Review and History -- 1.2 Current Uses in Submarine Geomorphology -- 2 Physical/Technical Principles of the Method -- 2.1 Imaging Geometry -- 2.2 Range Performance -- 2.3 Range Resolution -- 2.4 Angular Resolution -- 2.5 Bottom Detection -- 2.6 Sounding Density -- 3 Integrated Sensors -- 3.1 Vessel Reference Frame -- 3.2 Orientation -- 3.3 Horizontal Positioning -- 3.4 Vertical Positioning -- 3.5 Sound Speed -- 4 State of the Art Tools -- 5 Strength and Weaknesses of the Method for Investigating Submarine Geomorphology -- 6 Conclusions -- References -- 4 Reflection and Refraction Seismic Methods -- Abstract -- 1 History of Seismic Methods -- 2 Physical Principles -- 2.1 Basic Principles of the Seismic Reflection Method -- 2.2 Basic Principles of the Seismic Refraction Method -- 3 Survey Design and Processing -- 3.1 Seismic Reflection Surveys -- 3.1.1 Types of Marine Seismic Reflection Surveys -- 3.1.2 The Seismic Source -- 3.1.3 Receiver Arrays -- 3.1.4 Recording Parameters -- 3.1.5 Basic Processing Steps -- 3.2 Seismic Refraction Surveys -- 3.2.1 Acquisition Geometries -- 3.2.2 Receiver Types -- 3.2.3 Basic Processing Scheme -- 3.2.4 Forward and Inverse Modeling -- 4 State of the Art Tools and Methods -- 4.1 Overview -- 4.2 Parametric Single-Beam Echo-Sounding -- 4.3 Deep-Towed Seismic Acquisition -- 4.4 High-Resolution 3D Seismic Imaging -- 4.5 Broadband Imaging. , 4.6 Mirror Imaging of OBS Data -- 4.7 Joint Inversion of Refraction and Reflection Data -- 4.8 3D Full-Waveform Inversion of Wide-Angle, Multi-azimuth Data -- 5 Strengths and Weaknesses -- Acknowledgements -- References -- 5 Quantitative Analyses of Morphological Data -- Abstract -- 1 Mapping Submarine Morphologies -- 2 Quantitative Structures, Shapes and Their Variations -- 3 Geostatistics to Geographical Information Systems -- 3.1 Basic Measurements -- 3.2 Variations with Spatial Scales -- 3.3 Finding Trends and Patterns -- 4 Conclusions -- References -- 6 Seafloor Sediment and Rock Sampling -- Abstract -- 1 Introduction -- 2 Surface Sediment Sampling -- 2.1 Dredging -- 2.2 Box Corer -- 2.3 Grab Sampler -- 2.4 ROV Push Cores -- 3 Shallow Sediment Coring -- 3.1 Gravity Corer -- 3.2 Piston Corer -- 3.3 Kasten Corer -- 3.4 Vibrocorer -- 3.5 Multi-corer and Mega Corer -- 3.6 Giant Piston Corer and the CALYPSO Corer -- 4 Seafloor Drilling -- 4.1 Oil and Gas Industry Operations -- 4.2 International Ocean Discovery Program -- 4.3 Seafloor Drill Rigs -- 5 Core Handling -- References -- 7 ROVs and AUVs -- Abstract -- 1 Method Descriptions -- 1.1 Remotely Operated Vehicles -- 1.2 Autonomous Underwater Vehicles -- 1.3 Using Robotic Vehicles to Study Seafloor Geomorphology -- 2 Different Applications of ROVs and AUVs for Geomorphological Studies -- 2.1 High-Resolution Multibeam Bathymetry -- 2.2 True 3-Dimensional Morphology -- 2.3 Sidescan and Synthetic Aperture Sonar -- 2.4 Photomosaicking and Photogrammetry -- 2.5 Laser Line Scan -- 3 Future Directions -- Acknowledgements -- References -- Submarine Landforms and Processes -- 8 Origin and Geomorphic Characteristics of Ocean Basins -- Abstract -- 1 Introduction -- 1.1 Definition of Terms-Ocean Basins and Bathymetric Basins -- 1.2 Tectonic Origin of Ocean Basins. , 1.3 Multiple Origins of Bathymetric Ocean Basins -- 1.4 Aims of This Study -- 2 Methods -- 3 Results -- 4 Discussion -- 4.1 Key Drivers of Basin Evolution -- 4.2 Seamount Frequency of Occurrence and Sediment Thickness -- 4.3 Geomorphology and Global Bottom Water Circulation -- 5 Conclusions -- Acknowledgements -- References -- 9 Drivers of Seafloor Geomorphic Change -- Abstract -- 1 Introduction -- 2 Plate Tectonics-Continental Break-up and Fate of the Oceanic Lithosphere at Convergent Plate Boundaries -- 2.1 Oceanic Spreading Centres -- 2.2 Transform Faults and Fracture Zones -- 2.3 Subduction Zones -- 2.4 Volcanic Islands -- 3 Sediment Types -- 3.1 Terrigenous Sediments (Also: Lithogenous) -- 3.2 Biogenic Sediments (Also: Biogenous) -- 3.3 Authigenic Sediments (Also: Hydrogenous) -- 3.4 Volcanogenic Sediments -- 3.5 Cosmogenous Sediments -- 3.6 Plastics -- 4 Gravity-Density Currents, Slope Instability and Mass Transport Deposits -- 4.1 The Ocean as a Sediment Sink -- 4.2 Density Currents, Erosion, Transport and Deposition -- 4.3 Submarine Slope Instability and Mass-Transport Deposits -- 5 Ice-Ice Bull-Dozing Effect from Land to the Sea on Polar Continental Margins -- 5.1 Ice Streams -- 5.2 Ice Grounding at the Continental Shelf Edge -- 5.3 Ice Retreating During Deglaciations -- 6 Compaction Disequilibrium-Pore Fluids Overpressure in Marine Sedimentary Sequences -- 7 Oceanic Circulation, Waves and Tides, and Sea Level Change -- 7.1 Bottom Currents -- 7.2 Waves and Tides -- 7.3 Sea Level Change -- 8 Chemical Precipitation/Dissolution and Bioconstructions -- 8.1 Methane-Derived Carbonate Precipitation -- 8.2 Weathering at Hydrothermal Vents -- 8.3 Salt Deformation -- 8.4 Submarine Karst -- 8.5 Benthic Organisms -- 9 Human Activity -- Suggested Reading -- Section 2 -- Section 3 -- Section 4 -- Section 5 -- Section 6 -- Section 7 -- Section 8. , Section 9 -- 10 Shallow Coastal Landforms -- Abstract -- 1 Introduction -- 2 Depositional Shallow Coastal Landforms -- 2.1 Ripples, Dunes, Sand Waves and Antidunes -- 2.2 Sand Ribbons, Sand Patches, Sand Banks -- 3 Erosional Shallow Coastal Landforms -- 3.1 Scours Produced by Vortex Flow: Flute Marks, Gutter Marks, and Furrows -- 3.2 Other Erosional Bedforms Produced by Turbulent Flow: Channels and Rills -- 3.3 Erosional Bedforms Caused by Imprints of Objects: Bounce, Brush, Skip, Prod, Groove, Roll and Chevron Marks -- 3.4 Bedforms Produced by Objects Lying on the Seafloor: Obstacle Marks and Current Crescents -- 4 Addressing Key Issues in Shallow Coastal Landform Evolution -- 4.1 Shallow Coastal Landform Changes: Geomorphometric Measurements -- 4.2 Shallow Coastal Landforms and Sediments: A New Approach to Benthic Habitat Mapping -- 5 Conclusions -- References -- 11 Continental Shelf Landforms -- Abstract -- 1 Introduction -- 2 Brief History of Research on Continental Shelf Landforms -- 3 Processes -- 4 Continental Shelf Landforms -- 4.1 Consolidated Bottoms -- 4.2 Erosive Morphologies -- 4.3 Prograding Landforms -- 4.4 Bedforms -- 4.5 Gas-Related Features -- 4.6 Anthropogenic Features -- 5 Key Research Questions and Future Directions -- Acknowledgements -- References -- 12 Submarine Glacial Landforms -- Abstract -- 1 Introduction -- 2 Landforms Produced in Different Glacial-Process Environments -- 2.1 Subglacial Landforms -- 2.1.1 Mega-Scale Glacial Lineations and Other Streamlined Subglacial Landforms -- 2.1.2 Hill-Hole Pairs -- 2.1.3 Crevasse-Fill Ridges -- 2.1.4 Subglacial Glacifluvial Landforms -- 2.2 Ice-Marginal Landforms -- 2.2.1 Moraine Ridges -- 2.2.2 Grounding-Zone Wedges -- 2.2.3 Ice-Proximal Fans -- 2.2.4 Lateral Moraines -- 2.2.5 Trough-Mouth Fans -- 2.3 Glacimarine Landforms -- 2.3.1 Iceberg Ploughmarks. , 2.3.2 Smooth Basin Fill from Meltwater Plumes -- 2.4 Marine Landforms -- 3 Glacial Landforms on the Norwegian Margin: A Case Study -- 3.1 Landforms in Cross-Shelf Troughs -- 3.2 Landforms on Inter-Trough Banks -- 3.3 Landsystem Models for Fast- and Slow-Flowing Ice -- 4 Future Research Objectives -- Acknowledgements -- References -- 13 Submarine Landslides -- Abstract -- 1 Introduction -- 2 Geomorphic Expression of Submarine Landslides -- 3 Investigating Submarine Landslides -- 3.1 Geomorphometric Analyses -- 3.2 Landslide Population Statistics -- 3.3 Very High Resolution Imaging and Repeat Surveying -- 3.4 3D Seismic Geomorphology of Submarine Landslides -- 4 Major Challenges and Future Directions -- 5 Conclusions -- References -- 14 Submarine Canyons and Gullies -- Abstract -- 1 Introduction -- 1.1 Definitions and Nomenclature -- 1.2 The Origin of Submarine Canyons -- 2 Submarine Canyon Morphology and Evolution -- 2.1 The Physiography of Submarine Canyons -- 2.2 A Brief Comparison with Fluvial Systems -- 2.3 Global Distribution of Submarine Canyons -- 2.4 Geomorphic Processes in Submarine Canyons -- 2.4.1 Sea Level and Regional Tectonic Forcing -- 2.4.2 Sedimentary and Hydrodynamic Processes -- 2.4.3 The Human Imprint -- 2.4.4 Marine Geohazards -- 3 Towards an Integrated Approach to Submarine Canyon Research -- Acknowledgments -- References -- 15 Submarine Fans and Their Channels, Levees, and Lobes -- Abstract -- 1 Introduction -- 2 Five Decades of Submarine Fan Research-Challenges and Progress -- 3 Processes -- 4 Morphology of Submarine Channels and Their Levees -- 5 Morphology of Submarine Lobes -- 6 Key Research Questions and Future Directions -- Acknowledgements -- References -- 16 Contourite Drifts and Associated Bedforms -- Abstract -- 1 Introduction -- 1.1 Scope and Terminology -- 1.2 Brief History of Study -- 2 Contourite Drifts. , 2.1 Sheeted Drifts.
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  • 4
    Keywords: Geography ; Oceanography ; Sedimentology ; Physical geography ; Konferenzschrift ; Aufsatzsammlung ; Meereskunde ; Massenbewegung
    Description / Table of Contents: Submarine mass movements are a hidden geohazard with large destructive potential for submarine installations and coastal areas. This hazard and associated risk is growing in proportion with increasing population of coastal urban agglomerations, industrial infrastructure, and coastal tourism. Also, the intensified use of the seafloor for natural resource production, and deep sea cables constitutes an increasing risk. Submarine slides may alter the coastline and bear a high tsunamogenic potential. There is a potential link of submarine mass wasting with climate change, as submarine landslides can uncover and release large amounts greenhouse gases, mainly methane, that are now stored in marine sediments. The factors that govern the stability of submarine slopes against failure, the processes that lead to slope collapses and the collapse processes by themselves need to be better understood in order to foresee and prepare society for potentially hazardous events. This book volume consists of a collection of cutting edge scientific research by international experts in the field, covering geological, geophysical, engineering and environmental aspects of submarine slope failures. The focus is on understanding the full spectrum of challenges presented by this major coastal and offshore geohazard
    Type of Medium: Book
    Pages: XVI, 683 S. , Ill., graph. Darst., Kt.
    ISBN: 9783319009711
    Series Statement: Advances in natural and technological hazards research 37
    DDC: 551.46
    Language: English
    Note: Literaturangaben , Physical properties of sedimentsGas hydrates and role of interstitial fluids in submarine slope failure -- Slope stability and risk assessment -- Monitoring, observation and repeated surveys of active slope failure processes -- Understanding failure processes from submarine landslide geomorphology -- Interaction between ocean circulation and MTDs -- Landslide generated tsunamis -- Long-term record of submarine landslides and MTD paleoseismology -- Outcrops of ancient submarine landslides.
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  • 5
    Book
    Book
    Cham, Switzerland : Springer
    Keywords: Earth sciences ; Geology ; Oceanography ; Geomorphology ; Earth Sciences ; Earth Sciences ; Earth sciences ; Geology ; Geomorphology ; Oceanography ; Earth sciences ; Geology ; Geomorphology ; Oceanography ; Aufsatzsammlung ; Geomorphologie ; Meereskunde ; Meeresboden ; Meeresgeologie
    Type of Medium: Book
    Pages: xiii, 556 Seiten , Illustrationen, Diagramme, Karten , 25 cm
    ISBN: 3319578529 , 9783319578514
    Series Statement: Springer geology
    DDC: 550
    RVK:
    RVK:
    Language: English
    Note: Includes bibliographical references
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  • 6
    Publication Date: 2022-03-07
    Description: Coastal and ocean island volcanoes are renowned for having unstable flanks. This can lead to flank deformation on a variety of temporal and spatial scales ranging from slow creep to catastrophic sector collapse. A large section of these unstable flanks is often below sea level, where information on the volcano-tectonic structure and ground deformation is limited. Consequently, kinematic models that attempt to explain measured ground deformation onshore associated with flank instability are poorly constrained in the offshore area. Here, we attempt to determine the locations and the morpho-tectonic structures of the boundaries of the submerged unstable southeastern flank of Mount Etna (Italy). The integration of new marine data (bathymetry, microbathymetry, offshore seismicity, reflection seismic lines) and published marine data (bathymetry, seafloor geodesy, reflection seismic lines) allows identifying the lineament north of Catania Canyon as the southern lateral boundary with a high level of confidence. The northern and the distal (seaward) boundaries are less clear because no microbathymetric or seafloor geodetic data are available. Hypotheses for their locations are presented. Geophysical imaging suggests that the offshore Timpe Fault System is a shallow second-order structure that likely results from extensional deformation within the moving flank. Evidence for active uplift and compression upslope of the amphitheater-shaped depression from seismic data along with subsidence of the onshore Giarre Wedge block observed in ground deformation data leads us to propose that this block is a rotational slump, which moves on top of the large-scale instability. The new shoreline-crossing structural assessment may now inform and improve kinematic models.
    Description: Published
    Description: 810790
    Description: 2V. Struttura e sistema di alimentazione dei vulcani
    Description: JCR Journal
    Keywords: seafloor ; fault ; flank dynamics ; hydroacoustic ; geodesy ; seismic profiles ; 04.07. Tectonophysics ; 04.08. Volcanology ; 04.06. Seismology ; 04.02. Exploration geophysics ; 05.02. Data dissemination
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 7
    Publication Date: 2024-01-29
    Description: Recent advances in underwater and airborne robotic systems and ocean technologies have opened new perspectives in marine geology and its applications in the context of coastal and marine economic activities, whose sustainable development is increasingly acknowledged as a pillar for the new blue economy. BridgET (Bridging the gap between the land and the sea in a virtual Environment for innovative Teaching and community involvement in the science of climate change-induced marine and coastal geohazard) is an EU ERASMUS+ project designed to develop innovative and inclusive teaching methods to address a growing demand for strategic skills and scientific expertise in the field of 3D geological mapping of coastal environments. Seamless integration of the wide variety of multisource and multiscale onshore, nearshore and offshore geospatial data is indeed one of the main areas for improvement in the implementation of efficient management practices in coastal regions, where climate change, rising sea level, and geohazards are considerable environmental issues. BridgET involves a partnership consisting of six European universities with outstanding expertise in the study of geological hazards, and climate impacts in marine and coastal areas (i.e., University of Milano-Bicocca, Italy, Arctic University of Tromsø/CAGE - Norway, National and Kapodistrian University of Athens - Greece, Kiel University, Germany, University of Liege – Belgium, and the University of Malta), two Italian research institutes (INGV and INAF) and a German company (Orthodrone GmvH) specialized in UAS-based LiDAR and photogrammetry data acquisition services and analyses. Project implementation relies on delivering learning and teaching activities through dedicated summer schools for MSc students by efficiently combining the partner’s expertise. Schools focus on giving students a hands-on experience with the variety of methods and procedures adopted in geospatial data acquisition and processing, including the use of drones (Uncrewed Aerial System – UAS), acoustic remote sensing techniques and underwater robotic systems, together with the progress made by computer visions and digital image analysis by using Artificial Intelligence (AI). Students are also introduced to the opportunity to easily examine multiple viewing angles of the seabed and coastal 3D surfaces by using immersive and nonimmersive Virtual Reality (VR), to bring them closer to a more straightforward observation of geomorphological data and geological phenomena. The first Summer School was held in Santorini between the 3rd and 14th of October, 2022. It was attended by 26 students coming from 13 different countries. Teaching and learning activities included several classrooms, fieldwork, laboratory sessions, and seven seminars and cultural visits dealing with transversal topics, allowing students to approach an integrated understanding of human interaction with physical processes from social and economic perspectives. In this presentation, we give examples of course content used to allow students to develop a deeper understanding of theoretical and practical knowledge of climate-induced coastal and marine geohazards. Participants' opinions on the quality of the offered learning/training activities of the Erasmus+ BridgET Santorini Summer School (collected through a dedicated questionnaire) will also be presented. Erasmus+ BridgET Team: Varvara Antoniou, Fabio Luca Bonali, Clara Drummer, Theynushya Esalingam, Luca Fallati, Susanna Falsaperla, Felix Gross, Hans-Balder havenith, Juri Klusak, Sebastian Krastel, Iver Martens, Aaron Micallef, Paraskevi Nomikou, Giuliana Panieri, Danilo Reitano, Julian Teege, Alessandro Tibaldi, Andrea Giulia Varzi, Fabio Vitello, Othonas Vlasopoulos
    Description: Published
    Description: Vienna (Austria)
    Description: OSA4: Ambiente marino, fascia costiera ed Oceanografia operativa
    Keywords: marine geosciences ; education ; Europe ; 04.02. Exploration geophysics ; 05.03. Educational, History of Science, Public Issues ; 05.04. Instrumentation and techniques of general interest
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Conference paper
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