Sökning: "island vulkaner"
Visar resultat 1 - 5 av 10 uppsatser innehållade orden island vulkaner.
1. Paleomagnetisk undersökning av vulkanen Rangitoto, Nya Zeeland, för att bestämma dess utbrottshistoria
Kandidat-uppsats, Lunds universitet/Geologiska institutionenSammanfattning : Rangitoto är en vulkanö som ligger nordost om Auckland, Nya Zeeland, och tillhör Aucklands vulkaniska fält (AVF) som består av ca 50 utdöda monogenetiska vulkaner. Eftersom Rangitoto har egenskaper som skiljer sig från de andra vulkanerna i området tror man att området genomgått en förändring och gått in i en ny fas. LÄS MER
2. Geothermal Potential of Sub-Volcanic Intrusions in a Typical Caldera Setting
Master-uppsats, Uppsala universitet/Mineralogi, petrologi och tektonikSammanfattning : Sub-volcanic intrusions can form an extensive network of sills, dikes and other intrusion types that make up a plumbing system beneath volcanoes. Such intrusions are the heat source for high-temperature geothermal systems in volcanic areas and therefore, it is of great importance to study them in relation to geothermal exploration and production. LÄS MER
3. Estimation of Relative Seismic Velocity Changes Around Katla Volcano, Using Coda in Ambient Seismic Noise
Master-uppsats, Uppsala universitet/Institutionen för geovetenskaperSammanfattning : Relative seismic velocity variations in the Earth’s crust can be estimated by using ambient seismic noise records from a pair of stations. Velocity variations can be caused by stress perturbations in the subsurface. Therefore, information on stress changes in the crust can possibly be retrieved from measured velocity variations in the medium. LÄS MER
4. Relationship Between Hekla’s Magmatic System and Its Eruptive Behavior
Master-uppsats, Uppsala universitet/Institutionen för geovetenskaperSammanfattning : The southern part of Iceland incorporates two parallel volcanic zones, the Eastern Volcanic Zone and the Western Volcanic Zone. These two branches are connected by an E-W transform. Hekla is located close to intersection between the two plate boundaries. Hekla is one of Iceland's most active and explosive volcanoes. LÄS MER
5. Magma Storage of the Alkaline Tejeda Cone Sheet Swarm, Gran Canaria, Spain
Master-uppsats, Uppsala universitet/Institutionen för geovetenskaperSammanfattning : Volcanoes with alkaline differentiated magma belong to the more explosive and destructive types, but knowledge about these systems is often limited. Unravelling the position and conditions in the source magma chamber systems that feed volcanism at the surface is vital to understand these systems better. LÄS MER