Essays about: "Seismic signals"

Showing result 1 - 5 of 7 essays containing the words Seismic signals.

  1. 1. Preprocessing of earthquake tremor data for tremor location

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Brian Rydgren; [2022]
    Keywords : Tremor; Earthquake; Volcano;

    Abstract : When analysing volcanic seismicity and volcanic events, it is often interesting to focus on tremor, which is a signal of long duration. This is because not much is known about tremor. Unlike earthquakes, sources of tremor are difficult to locate due to them not having any clear onsets in the seismic signal. READ MORE

  3. 2. Identifying subarctic river thermal and mechanical ice break-up using seismic sensing

    University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Author : Stefania Ursica; [2021]
    Keywords : Ice break-up; River ice; Subarctic; Thermal melting; Mechanical break-up; Freeze-up; Environmental seismology; Seismic signals;

    Abstract : River-ice break-up in high-latitude regions, despite its brevity, is a fundamental process, representing the most dynamic and complex period of fluvial processes. Moreover, ice break-up has significant cascading ecological effects, with a different severity for mechanical vs. READ MORE

  4. 3. Cross-comparison of Non-Linear Seismic Assessment Methods for Unreinforced Masonry Structures in Groningen

    University essay from KTH/Betongbyggnad

    Author : Viktor Peterson; Zihao Wang; [2020]
    Keywords : Non-linear time-history analysis; non-linear pushover analysis; N2-method; equivalent frame model; continuum model; numerical seismic assessment; unreinforced masonry buildings; Olinjär tids-historikanalys; olinjär stjälpningsanalys; N2-metoden; ekvivalent rammodell; kontinuumelement modell; numerisk jordbävningsanalys; oarmerade murverksbyggnader;

    Abstract : A large amount of low-rise unreinforced masonry structures (URM) can be found in Groningen, the Netherlands. More and more induced earthquakes with short duration have been detected in this region due to gas exploitation. READ MORE

  5. 4. Investigation Of Source Parameters Of Earthquakes In Northern Sweden

    University essay from Uppsala universitet/Geofysik

    Author : María González-Caneda; [2019]
    Keywords : spectral analysis; earthquake source observations; ω-2 source model; moment magnitude; local magnitude; Northern Sweden seismicity.;

    Abstract : By studying the frequency domain of seismic signals generated by earthquakes, the source parameters can be recovered, i.e., the seismic moment (M0) and the stress drop (Δσ). READ MORE

  6. 5. High-resolution offshore reflection seismic investigation of the Stockholm Bypass tunnel

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Fengyi Liu; [2017]
    Keywords : infrastructure; tunnel; seismic; reflection; multiple; engineering;

    Abstract : Boat-towed high-frequency, short source and receiver spacing, reflection seismic data, 16 profiles and in total 3884 m long, were acquired in 2008 for the planning of the Stockholm Bypass multilane (3 lanes in each direction in two different tubes) underground motorway tunnel designed to ease the ever increasing car traffic on the city and neighbouring regions. The planned bypass will be about 21 km long of which 18 km will be in the form of bedrock tunnel. READ MORE