Sökning: "Seismic velocity"

Visar resultat 16 - 20 av 39 avhandlingar innehållade orden Seismic velocity.

  1. 16. Soil identification by vibration measurements during soil-rock sounding

    Författare :Editha Ehrmanntraut; Stefan Larsson; Jörgen Johansson; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ground vibrations; dynamic penetration testing; frequency; seismic test; vibration velocity; in-situ tests; markvibrationer; dynamiska sonderingsmetoder; frekvens; seismiska försök; vibrationshastighet; in-situ-försök; Jord- och bergmekanik; Soil and Rock Mechanics;

    Sammanfattning : Dynamic penetration tests are frequently used as geotechnical site investigation methods. In Sweden, the main reason to choose a dynamic penetration method is to investigatedepth to bedrock, strength and deformation properties of soil, compaction, or pilingdepth. LÄS MER

  3. 17. Resistivity and Surface Wave Seismic Surveys in Geotechnical Site Investigations

    Författare :Roger Wisén; Teknisk geologi; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; teknisk geografi; Hydrogeologi; teknisk geologi; Hydrogeology; geographical and geological engineering; resistivity method; surface wave seismic method; inverse modelling; site investigation; geophysics;

    Sammanfattning : The adaptation of geophysical methods for civil engineering purposes represents an important contribution to the development of geotechnical site investigation methodology. The term geotechnical site investigation here refers to all investigations performed prior to or during construction; i.e. LÄS MER

  4. 18. Seismological Investigation of Katla Volcanic System (Iceland) : 3D Velocity Structure and Overall Seismicity Pattern

    Författare :Zeinab Jeddi; Ari Tryggvason; Olafur Gudmundsson; Heidi Soosalu; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Volcano tomography; volcano seismicity; Katla volcano; Earthquake location; Geofysik med inriktning mot seismologi; Geophysics with specialization in Seismology;

    Sammanfattning : The work in this thesis concentrates on Katla volcano in southern Iceland. This is one of Europe’s most active volcanoes and its history tells us that it poses many threats to society, both locally (Iceland) and on a broader scale (Europe). LÄS MER

  5. 19. Seismic investigations in the Brunswick No. 6 area, Canada – Imaging and heterogeneity

    Författare :Saeid Cheraghi; Alireza Malehmir; Gilles Bellefleur; Pekka Heikkinen; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Brunswick No. 6; Mineral deposits; 2D and 3D reflection seismic; Acquisition footprint; Scale length; Heterogeneity; Numerical modeling; Geofysik med inriktning mot fasta jordens fysik; Geophysics with specialization in Solid Earth Physics;

    Sammanfattning : The Brunswick No. 6 area, which is located in the Bathurst Mining Camp, New Brunswick, Canada, is the focus of this thesis. LÄS MER

  7. 20. Geophysical studies in the western part of the Siljan Ring Impact Crater

    Författare :Harbe Muhamad; Christopher Juhlin; Alireza Malehmir; Daniel Sopher; Lars Nilsen; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Siljan ring impact structure; Seismic reflection; Down-hole logging; Gravity; Magnetic; Tomography; Paleozoic rocks;

    Sammanfattning : This thesis utilizes several geophysical methods to study the Siljan Ring impact structure, focusing on the western part of the structure. This thesis, and the three papers upon which it is based, reports on attempts to delineate the Paleozoic rocks at depth within the annular ring graben and characterize their structure. LÄS MER