Thesis supervisor: István János Kovács
Location of studies (in Hungarian): Isntitute of Earth Physics and Space Science, Eötvös University, Lithosphere Fluid Research Laboratory Abbreviation of location of studies: ELTE
Description of the research topic:
"Humanity is affected by many environmental geological effects, one of which is earthquakes. Due to the structure of the Earth, the areas affected by earthquakes are globally not equally distributed, but are concentrated along the lithospheric plate boundaries. Prominent areas include Japan and Chile, however, the Carpathian-Pannon region is also known to be affected by earthquakes. Within this area, the most significant region is the Vrancea seismogenic zone, part of which is the so-called Carpathian bend, where earthquakes are part of the everyday life. On the NW border of the seismogenic zone, a significant non-volcanic outgassing can be observed, originating from a great depth, which can also be used by society (in the form of countless gas-rich springs and mofettes), dominantly in the region of Covasna, also known as the ‘city of a thousand springs’.
The peculiarity of the Vrancea seismogenic zone is that the earthquakes are considered as mid-depth earthquakes with an average depth of 70-170 km, as a result of a sinking lithospheric plate that generates tension and stress. Furthermore, on the basis of recent geochemistry results, it can be concluded that in the Vrancea seismogenic zone, a surface-mantle connection in the form of deep fluid emanation can be considered. To monitor this phenomenon in detail, the HUN-REN Research Institute of Earth Physics and Space Science installed an Integrated Geodynamic Station in Covasna, so that we can study the temporal changes in the flux of the emanating volatiles (e.g. CO2, CH4, N2O, SO2, radon) and understand their possible earthquakes dependence. The dataset of the Integrated Geodynamic Station is completed by the geophysical measurements of the Romanian Geophysical Institute (seismology, magnetotellurics, atmosphere geophysics). With the dataset of the coming years we have a good chance of revealing the correlations between earthquakes and geochemical and geophysical data, which have not only an outstanding scientific, but also have an important social impact.
The candidate's task is to understand the function of the Integrated Geodynamic Station, create a geochemical, geophysical and meteorological database from the incoming data, and then process and interpret it with time series data analysis. Furthermore, the candidate has to interpret the obtained results in a local and regional geoscience framework with a global outlook. During the doctoral research, the student has to maintain continuous contact with Hungarian and Romanian specialists, therefore, in addition to a high level of Hungarian and Romanian language knowledge, English is essential. The results must be presented at national and international conferences and published in English.
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Required language skills: English Recommended language skills (in Hungarian): Hungarian, Romanian Further requirements: earth sciences, environmental sciences, field experience
Number of students who can be accepted: 1
Deadline for application: 2024-05-31
2024. IV. 17. ODT ülés Az ODT következő ülésére 2024. június 14-én, pénteken 10.00 órakor kerül sor a Semmelweis Egyetem Szenátusi termében (Bp. Üllői út 26. I. emelet).
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