Abstract
Abstract. Instrumental seismic observations in northern Finland started in the 1950s. They were originally initiated by the Institute of Seismology of the University of Helsinki (ISUH), but the staff of Sodankylä Geophysical Observatory (SGO) and later geophysicists of the University of Oulu (UO) were involved in the development of seismological observations and research in northern Finland from the very beginning. This close cooperation between seismologists and the technical staff of ISUH, UO, and SGO continued in many significant international projects and enabled a high level of seismological research in Finland. In our paper, we present history and current status of seismic observations and seismological research in northern Finland at the UO and SGO. These include both seismic observations at permanent seismic stations and temporary seismic experiments with portable seismic equipment. We describe the present seismic instrumentation and major research topics of the seismic group at SGO and discuss plans for future development of permanent seismological observations and portable seismic instrumentation at SGO as part of the European Plate Observing System (EPOS) research infrastructure. We also present the research topics of the recently organized Laboratory of Applied Seismology, and show examples of seismic observations performed by new seismic equipment located at this laboratory and selected results of time-lapse seismic body wave travel-time tomography using the data of microseismic monitoring in the Pyhäsalmi Mine (northern Finland).
Highlights
Sodankylä Geophysical Observatory (SGO) was established in 1913 by the Finnish Academy of Science and Letters to perform geophysical measurements and research based on the observation results
SGO has participated in several passive seismic experiments that are shortly introduced in Sect. 3.2.2–3.2.4 and 3.2.6 and coordinated a passive seismic POLENET/LAPNET experiment (Sect. 3.2.5) during International Polar Year (IPY) 2007–2009
During 2001–2005, the seismic group of SGO participated in the Finnish Reflection Experiment (FIRE) carried out by a consortium consisting of the Geological Survey of Finland, the ISUH, Department of Geosciences of the University of Oulu, and SGO
Summary
Sodankylä Geophysical Observatory (SGO) was established in 1913 by the Finnish Academy of Science and Letters to perform geophysical measurements and research based on the observation results. The second period began in 1921 when the first privately financed seismograph station in Helsinki was put in operation This event marks the beginning of the era of instrumental seismology in Finland. The period in the development of Finnish seismology started at the end of the 1950s, and it was motivated by development in seismic instrumentation worldwide During this period, several short-period analogue seismograph stations with photo paper registration were founded in Finland, the instrumentation had not yet been standardized and home-made seismic sensors were used (see Luosto (2001) for details). Just at the end of the 20th century, Nurminen designed an entirely new digital seismic recorder (model DAS-98), which runs under the Linux operating system These recorders were used both in the permanent stations and in temporary field experiments. The future activities include participation in European Plate Observing System (EPOS) pan-European research infrastructure for solid Earth geosciences, and the development of the newly established Laboratory of Applied Seismology (SEISLAB) taking charge of campaign measurements at SGO
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
