Sökning: "seismology"

Visar resultat 1 - 5 av 10 uppsatser innehållade ordet seismology.

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

    Master-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

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

    Sammanfattning : 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. LÄS MER

  3. 2. Classification of Seismic Body Wave Phases Using Supervised Learning

    Master-uppsats, Uppsala universitet/Institutionen för informationsteknologi

    Författare :Gunnar Atli Eggertsson; [2019]
    Nyckelord :;

    Sammanfattning : The task of accurately distinguishing between arrivals of different types of seismic waves is a common and important task within the field of seismology. For data generated by seismic stations operated by SNSN this task generally requires manual effort. LÄS MER

  4. 3. Development and Evaluation of a Tomographic Technique for Volumetric Imaging of Flames

    Master-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Förbränningsfysik

    Författare :David Sanned; [2018]
    Nyckelord :3D-Tomography; Additive Reconstruction Technique; Space Carving; Machine Vision Cameras; Imaging of Flame Models; Technology and Engineering; Physics and Astronomy;

    Sammanfattning : With modern day interest to continue the reduction of harmful emissions and improve the efficiency of combustion devices, the need to further improve upon accuracy and ability to describe combustive processes is of high value. Nowadays, multiple capable point (0D) and two-dimensional measurement (2D) techniques exist for flame investigation, however as combustion nearly always is a three-dimensional (3D) process some limitations do exist within many of these techniques. LÄS MER

  5. 4. Analysis of Multicomponent Data to Study Esker Structures, Turku-Finland

    Kandidat-uppsats, Uppsala universitet/Geofysik

    Författare :Julia Fridlund; [2017]
    Nyckelord :Finland; esker structures; reflection seismology; multicomponent data; S-wave; Finland; rullstensås; reflexionsseismik; flerkomponentdata; S-vågor;

    Sammanfattning : Eskers are long winding ridges that originate from gravel that has travelled in meltwater streams in glaciers. At the study site, Virttaankangas plane in southwest Finland, there are esker structures covered by sediments. One reason why it is important to study eskers is because they are used for purifying drinking water. LÄS MER

  7. 5. Wisdom-volkano : a novel tool based on open GIS and time-series to analyse and share volcanic data

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Fulgencio Sanmartín; [2016]
    Nyckelord :GIS; volcanic eruption; interferogram; time-series; seismology; GNSS; Physical Geography and Ecosystem analysis; Earth and Environmental Sciences;

    Sammanfattning : Active volcanoes threaten life around. In order to predict their eruptions earlier and mitigate their hazards, several variables must be observed and compared. Geographical information systems (GIS) combine different geospatial images from remote or local sensing. However, GIS often miss how maps change during the time. LÄS MER