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    An Engineering Geological Investigation of the Seismic Subsoil Classes in the Central Wellington Commercial Area.

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    thesis_fulltext.pdf (42.41Mb)
    Appendix 1A NZ Geological Timescale (217.2Kb)
    Appendix 2A NZ Geotechnical Society Field Guide Sheet (80.15Kb)
    Appendix 2B NZ Geotechnical Society Field Description of Rock and Soil (975.6Kb)
    Appendix 3A Site Effects - Basic Theory (29.46Kb)
    Appendix 3B Mexico City Case Study - 1985 Eathquake.docx (0bytes)
    Appendix 4A Geotechnical Borehole Database (1.412Mb)
    Appendix 4C WCC Central Park Flats Borehole log 1.pdf (885.8Kb)
    Appendix 4C WCC Central Park Flats Borehole log 2.pdf (1.285Mb)
    Appendix 4C WCC Central Park Flats Borehole log 3.pdf (3.082Mb)
    Appendix 5A Waterfront SCPT Results (22.37Kb)
    Appendix 6A SPAC Coherency coherency2.pdf (15.56Kb)
    Appendix 6A SPAC Coherency coherency3.pdf (22.82Kb)
    Appendix 6A SPAC Coherency coherency4.pdf (22.72Kb)
    Appendix 6A SPAC Coherency coherency5.pdf (17.67Kb)
    Appendix 6A SPAC Coherency coherency6.pdf (17.08Kb)
    Appendix 6A SPAC Coherency coherency7.pdf (16.18Kb)
    Appendix 6A SPAC Coherency coherency8.pdf (16.20Kb)
    Appendix 6A SPAC Coherency coherency9.pdf (16.20Kb)
    Appendix 6A SPAC Coherency coherency10.pdf (16.04Kb)
    Appendix 6A SPAC Coherency coherency11.pdf (22.83Kb)
    Appendix 6A SPAC Coherency coherency13.pdf (22.96Kb)
    Appendix 6B SPAC HVSR Plots hvsr1.pdf (15.39Kb)
    Appendix 6B SPAC HVSR Plots hvsr2.pdf (15.44Kb)
    Appendix 6B SPAC HVSR Plots hvsr3.pdf (14.90Kb)
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    Appendix 6B SPAC HVSR Plots hvsr5.pdf (15.63Kb)
    Appendix 6B SPAC HVSR Plots hvsr6.pdf (15.21Kb)
    Appendix 6B SPAC HVSR Plots hvsr7.pdf (15.19Kb)
    Appendix 6B SPAC HVSR Plots hvsr8.pdf (15.03Kb)
    Appendix 6B SPAC HVSR Plots hvsr9.pdf (15.16Kb)
    Appendix 6B SPAC HVSR Plots hvsr10.pdf (15.06Kb)
    Appendix 6B SPAC HVSR Plots hvsr11.pdf (15.13Kb)
    Appendix 6B SPAC HVSR Plots hvsr13.pdf (14.87Kb)
    Appendix 6C SPAC Field Sheets-Site 1.doc (285.5Kb)
    Appendix 6C SPAC Field Sheets -Site 2.doc (388Kb)
    Appendix 6C SPAC Field Sheets -Site 3.doc (454.5Kb)
    Appendix 6C SPAC Field Sheets-Site 4.doc (389Kb)
    Appendix 6C SPAC Field Sheets-Site 5.doc (358.5Kb)
    Appendix 6C SPAC Field Sheets-Site 6.doc (346Kb)
    Appendix 6C SPAC Field Sheets-Site 6.doc (346Kb)
    Appendix 6C SPAC Field Sheets-Site 7.doc (504Kb)
    Appendix 6C SPAC Field Sheets-Site 8.doc (388.5Kb)
    Appendix 6C SPAC Field Sheets-Site 9.doc (388Kb)
    Appendix 6C SPAC Field Sheets-Site 10.doc (387Kb)
    Appendix 6C SPAC Field Sheets-Site 11.doc (273Kb)
    Appendix 6C SPAC Field Sheets-Site 13.doc (360Kb)
    Appendix 6D SPAC Results Spreadsheet SPAC Site Location Map.tif (195.2Kb)
    Appendix 6D SPAC Results Spreadsheet SPAC Results.xlsx (529.7Kb)
    Appendix 7B Earth Research Viewer Software Earth Research Model Scene Help & Manipulation.docx (21.62Kb)
    Appendix 7B Earth Research Viewer Software Installation Note.docx (13.51Kb)
    Appendix 7B Earth Research Viewer Software EarthResearchViewer.exe (11.07Mb)
    Appendix 8A Wellington City Data Location Map.tif (256.5Mb)
    Appendix 8B Wellington City Waterfront Reclamation Map.tif (49.78Mb)
    Appendix 8C Wellington City Surficial Deposit Map.tif (304.8Mb)
    Appendix 8D Wellington City Depth to Bedrock Map.tif (253.2Mb)
    Appendix 8E Wellington City Cross Section Map.tif (227.2Mb)
    Appendix 8F Wellington City Site Period Map.tif (254.1Mb)
    Appendix 8G Wellington City Site Subsoil Class Map.tif (374.9Mb)
    Appendix 8H Wellington City Vs30 Map.tif (49.79Mb)
    Appendix 8I Wellington City Ground Shaking Map.tif (49.78Mb)
    Appendix 8J WCBD Liquefaction Potential.tif (49.79Mb)
    Author
    Semmens, Stephen Bradley
    Date
    2010
    Permanent Link
    http://hdl.handle.net/10092/4287
    Thesis Discipline
    Engineering Geology
    Degree Grantor
    University of Canterbury
    Degree Level
    Masters
    Degree Name
    Master of Science

    The city of Wellington has a high population concentration and lies within a geologically active landscape at the southern end of the North Island, New Zealand. Wellington has a high seismic risk due to its close proximity to several major fault systems, with the active Wellington Fault located in the north-western central city. Varying soil depth and properties in combination with the close proximity of active faults mean that in a large earthquake rupture event, ground shaking amplification is expected to occur in Thorndon, Te Aro and around the waterfront.

    This thesis focuses on the area bounded by Thorndon Overbridge in the north, Wellington Hospital in the south, Kelburn in the west, and Oriental Bay in the east. It includes many of the major buildings and infrastructural elements located within the central Wellington commercial area. The main objectives were to create an electronic database which allows for convenient access to all available data within the study area, to create a 3D geological model based upon this data, and to define areas of different seismic subsoil class and depth to rock within the study area at a scale that is useful for preliminary geotechnical analysis (1:5,000.

    Borelogs from 1025 holes with accompanying geological and geotechnical data obtained from GNS Science and Tonkin & Taylor were compiled into a database, together with the results from SPAC microtremor testing at 12 sites undertaken specifically for this study. This thesis discusses relevant background work and defines the local Wellington geology.

    A 3D geological model of the central Wellington commercial area, along with ten ArcGIS maps including surficial, depth to bedrock, site period, Vs30, ground shaking amplification hazard and site class (NZS 1170.5:2004) maps were created. These outputs show that a significant ground shaking amplification risk is posed on the city, with the waterfront, Te Aro and Thorndon areas most at risk.

    Subjects
    3D Engineering Geological Model
     
    Depth to Bedrock
     
    Ground Shaking Amplification
     
    Liquefaction Potential
     
    NZS 1170.5:2004
     
    SCPT
     
    SPAC
     
    SPT
     
    Site Effects
     
    Site Period
     
    Site Subsoil Class
     
    Surficial Deposits
     
    Vs30
     
    Wellington City.
    Collections
    • Science: Theses and Dissertations [3449]
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