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Description
The target area of the project in South-West Iceland is characterized by permanent seismic activity and extraordinary activity of crustal fluids (hot water) due to a variety of geodynamic processes such as movements at the contact of the Euroasian and North American tectonic plates and active volcanism in the rift zones. Seismicity in the region in question has been long-time monitored, the seismic data include information on magmatic activity and geothermal sources. The aim of this project is: (1) to reveal the physical processes that cause earthquakes with special emphasis on the role of fluids, geothermal operations and tectonic plate movements, (2) to apply the results to develop guidelines for underground operations in seismically active areas, and (3) to test and develop seismic methods as a prospecting tool in geothermal exploration.
The successful realization of the project depends on the know-how of the experts involved and the availability and quality of the seismic recordings as well as other geophysical and geological data. The Czech partners are capable of performing the basic research, however, the applied research proposed here needs a partner experienced in geothermal exploration, consultation and the role of small-scale earthquake monitoring therein. This is why the project is only feasible in collaboration with an Icelandic partner - Iceland GeoSurvey which is highly experienced in exploring shallow geothermal resources. Also, the technical support provided by the Icelandic partner will shorten substantially the data outrage, in case of any fault in seismic monitoring. The project is expected to enhance understanding of subsurface structures and processes related to geothermal reservoirs. Such results should be of high importance for geothermal development and applicable to other seismic regions where the fluid balance is affected by natural processes or human activities connected with the production/reinjection of geothermal water.
Summary of project results
The NASPMON project sought to improve our understanding of the complex subsurface processes at play in the Reykjanes Peninsula of Southwest Iceland with a focus on geothermal energy resources. This region presents unique challenges for researchers due to its active volcanism, frequent earthquakes, and abundant geothermal activity. To address these challenges, the project focused on analyzing seismic data to create a clearer picture of the subsurface environment.
The project team processed extensive earthquake data and conducted detailed studies of seismicity, particularly those linked to volcanic events. They investigated how deep earthquakes occur in relation to rock temperature, and developed a pseudo-3D model of seismic velocity. Further, they created empirical formulas to assess seismic hazard and analyzed seismic activity to map out faults and magmatic dykes.
These efforts resulted in a significantly improved understanding of the subsurface processes in the Reykjanes Peninsula. The project successfully mapped seismic faults and magmatic dykes, and developed valuable tools for seismic hazard assessment. These outcomes are of great benefit to various stakeholders, including the geothermal energy industry, researchers studying subsurface processes, and communities living in this seismically active region.
Summary of bilateral results
The bilateral collaboration brought significant benefits through the exchange of knowledge, expertise, and methodologies, enhancing scientific capabilities and strengthening partnerships between the involved parties. The cooperation fostered the development of advanced skills, high-quality data, and innovative approaches, laying a solid foundation for future joint projects and extended collaboration.