Sökning: "earthquakes"

Visar resultat 1 - 5 av 56 avhandlingar innehållade ordet earthquakes.

1. 1. Source analysis of multiplet earthquakes (two case studies in Iran)

   Författare :Samar Amini; Roland Roberts; Björn Lund; Zaher Hossein Shomali; Kuvvet Atakan; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Multiplet earthquakes; slip inversion; Coulomb stress; rupture directivity;

   Sammanfattning : Multiplet earthquakes are large earthquakes of similar magnitude which occur close in time in the same limited geographical area. They are not common but they considerably increase the potential hazard in the area in which they occur. LÄS MER

3. 2. Fluid-rock interaction in two seismically active areas : The Tjörnes Fracture Zone, northern Iceland and the Shillong Plateau, northeastern India

   Författare :Lillemor Claesson; Alasdair Skelton; Steven Ingebritsen; Stockholms universitet; []
   Nyckelord :Tjörnes Fracture Zone; Shillong Plateau; Iceland; India; hydrogeochemical monitoring; earthquakes; geothermal; transition metals; dissolution; basalt; feldspar weathering; source switching; Geology; geologi;

   Sammanfattning : Hydrogeochemical monitoring can improve our understanding of fluid-rock interaction, and may detect anomalies that are precursory to- or caused by- earthquakes. In this study, hydrogeochemical monitoring was carried out in two distinct tectonic settings, to study coupling between hydrogeochemical changes and seismic activity. LÄS MER

4. 3. Essays on Conflict, Institutions, and Ethnic Diversity

   Författare :Pelle Ahlerup; Göteborgs universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; civil war; earthquakes; economic development; economic growth; ethnicity; ethnic diversity; government effectiveness; human origins; instrumental variables; investment; institutions; nationalism; nation-building; natural disasters; property rights; protectionism; social capital;

   Sammanfattning : The thesis consists of five self-contained papers. Paper 1: Social Capital vs Institutions in the Growth Process Is social capital a substitute or a complement to formal institutions for achieving economic growth? Research on the impacts of social capital and formal institutions on economic development have so far mainly emerged as two distinct …elds. LÄS MER

5. 4. Isotropic and Anisotropic P and S Velocities of the Baltic Shield Mantle : Results from Analyses of Teleseismic Body Waves

   Författare :Tuna Eken; Roland Roberts; Uli Achauer; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; teleseismic tomography; mantle lithosphere; seismic anisotropy; teleseismic earthquakes; shear wave splitting; Earth sciences; Geovetenskap; Geophysics Specialized In Seismology; geofysik; med inriktning mot seismologi;

   Sammanfattning : The upper mantle structure of Swedish part of Baltic Shield with its isotropic and anisotropic seismic velocity characteristics is investigated using telesesismic body waves (i.e. P waves and shear waves) recorded by the Swedish National Seismological Network (SNSN). LÄS MER

7. 5. Dynamic Source Models of Icelandic Earthquakes and Teleseismic Tomograhy along the TOR array

   Författare :Z. Hossein Shomali; Göran Ekström; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Earth sciences; Geovetenskap; Earth sciences; Geovetenskap; Geofysik med inriktning mot seismologi; Geophysics with specialization in Seismology;

   Sammanfattning : This thesis describes new inversion-oriented methodological developments and their seismological applications. In the first study presented the dynamic source parameters of some local Icelandic earthquakes are studied by employing a time domain moment tensor inversion method. LÄS MER