Essays about: "volcanic eruption"

Showing result 6 - 10 of 20 essays containing the words volcanic eruption.

  1. 6. Analysis of the ion Composition in the Io Plasma Torus From Observations by the New Horizons Mission

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Jacob Cederlund; Carmen Dahlin; [2018]
    Keywords : ;

    Abstract : The object of this project is to analyse data from the plasma torus around Jupiter. The material in the plasma supplied by Jupiter’s moon Io is composed mostly of the elements oxygen and sulphur at different ionisation states and the torus has a changing environment. READ MORE

  3. 7. Behaviour of Boron Isotopes During Magmatic Degassing and Application to B-Rich Volcanic Glassfrom Lesbos, Greece

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Konstantinos Thomaidis; [2017]
    Keywords : boron isotopes; volcanic glass; SIMS; magmatic degassing; Lesbos Island; borisotoper; vulkaniskt glas; SIMS; magmatisk avgasning; Lesbos;

    Abstract : Boron is a fluid mobile trace element and is routinely employed as a tracer of slab-derived fluids in subduction zones since the heavy isotope (11B) preferentially partitions into the fluid phase during slab dehydration. However, it has been shown experimentally that boron isotopes (expressed as δ11B) can fractionate by up to several permil (‰) during subsequent magmatic evolution and degassing at high temperature, calling into doubt the fidelity of boron isotopes in volcanic glass as accurate tracers of slab degassing. READ MORE

  4. 8. Relationship Between Hekla’s Magmatic System and Its Eruptive Behavior

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Eric Andin; [2017]
    Keywords : Hekla; crystal mush; thermobarometry; magma storage depth; Hekla; kristallansamling; termobarometri; magmalagringsdjup;

    Abstract : 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. READ MORE

  5. 9. Constraining the duration of eruptions of the Rangitoto volcano, New Zealand, using paleomagnetism

    University essay from Lunds universitet/Geologiska institutionen

    Author : Linda Aulin; [2017]
    Keywords : Rangitoto; paleomagnetism; paleointensity experiments; Auckland volcanic field; thermal demagnetization; Earth and Environmental Sciences;

    Abstract : The volcano Rangitoto belongs to the Auckland volcanic field and is situated north east of Auckland city, New Zealand. The volcanos of the Auckland volcanic field have previously thought to be of monogenetic origin, but recent studies indicate that Rangitoto has a long history of eruptions, which would suggest that the volcanic system may have entered a new phase. READ MORE

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

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

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

    Abstract : 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. READ MORE