Geophysical Data Bases, Processing and Instrumentation
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Publications of the Institute of Geophysics, Polish Academy of Sciences
Series
Publications of the Institute of Geophysics, Polish Academy of Sciences provide original solutions in geophysical measurements, instrumentation, data collections, presentations and analysis.
Recent publications
Magnetotellurics Data Application in Medium Enthalpy Geothermal Prospects
Author(s): Mutebi D., Nur A., Haryanto A., Wiwid J., Kazinda M.
Volume:
Series:
DOI: 10.25171/InstGeoph_PAS_Publs-2020-003
Volume:
Series:
DOI: 10.25171/InstGeoph_PAS_Publs-2020-003
The research is aimed at delineating the reservoir and defining the geothermal system of Lili-Sepporaki through the interpretation of magnetotellurics data. Lili-Sepporaki is an andesitic-trachytic volcanic rich geothermal prospect located in western Sulawesi Province, Indonesia. In essence, hydrothermal conditions affect the properties of rocks, such as resistivity, and this can be studied using magnetotellurics, a passive electromagnetic technique. Magnetotellurics data were processed and interpreted using Phoenix and WinGLink software programs. A total of five two-dimensional resistivity models and five elevation maps were produced, and these showed a general decrease in rocks’ resistivity with depth. The analysis found out that the reservoir stretches from the center, northwards. The reservoir substantially starts to be seen at a depth of 600 m below sea level and deepens towards the east and north-west. Another magnetotelluric survey should be carried out with more stations, mainly aimed at a three-dimensional inversion, to get a detailed geothermal model and also to study the dense, low resistive structure in the southeast.
Analysis of Measurements and Modelling of the Biologically Active UV Solar Radiation for Selected Sites in Poland – Assessment of Photo-medical Effects
Author(s): Czerwińska A., Krzyścin J.
Volume: 428
Series: D-75
DOI: 10.25171/InstGeoph_PAS_Publs-2020-002
Volume: 428
Series: D-75
DOI: 10.25171/InstGeoph_PAS_Publs-2020-002
This publication presents scenarios how to balance pro-health and detrimental effects of the UV radiation during controlled heliotherapy in order to minimize harm (erythema appearance and DNA damage) and maximize gain (increase of vitamin D level, psoriasis clearance). Referring to the literature, there is a need of finding a methodology to assess the potential risk and benefit at the moment of exposition to natural UV radiation.