24.10.2017

Science Blog: The fight is not over yet – our surface waters are still facing many pressures

Teksti:
Tommi Kauppila, Research Professor

The chemical and ecological status of Finnish surface waters has considerably improved since the 1970s. However, some of the stressors that affect our lakes and rivers have proved difficult to control, and some new pressures have also appeared. While point source stressors such as municipal and industrial waste waters are nowadays well managed, diffuse loadings […]

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2.10.2017

Science Blog: Understanding long-term evolution in nuclear waste disposal through geology

Teksti:
Heini Reijonen, Chief Scientist

Geological disposal of radioactive waste Several options have been investigated for the management of radioactive waste, especially high-level wastes, such as spent nuclear fuel. Geological disposal is the internationally preferred option to deal with high-level radioactive waste. Even in cases where the fuel is treated or re-used, high-level waste, with variable compositions, will still be […]

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14.8.2017

Science Blog: Gas studies help to elucidate safety issues related to underground construction

Teksti:
Riikka Kietäväinen, Research Scientist

As economic natural gas accumulations are not known from Finland, gases have often been overlooked in bedrock and groundwater studies. However, gases, including methane, nitrogen, hydrogen and helium, can also be found in the Precambrian crystalline bedrock of the Fennoscandian Shield. The gases are mainly dissolved in water, but bubbling is also seen here and […]

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5.6.2017

Science Blog: Current Research Projects

Teksti:
Niko Putkinen, Geologist

Modern and Ancient Glaciations project Niko has been collaborating in the utilization of new imagery (LiDAR) to shed new light on the origin of drumlins and megaflutings formed under soft-bedded glaciers. Following his postdoctoral year in the laboratory of Nick Eyles at the Department of Physical and Environmental Sciences, University of Toronto at Scarborough (UTSC) […]

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10.5.2017

Science Blog: Stable Isotope Studies by Microbeam Analyses and Sources of Fluids in Orogenic Gold Mineral Systems

Teksti:
Ferenc Molnár, Research Professor

In situ mass spectrometric techniques are among the most rapidly developing analytical techniques that are revolutionizing our understanding of mineralogy, petrology and geochemistry. The advantage of these techniques is that they enable us to study very small mineral samples (e.g. a few hundreds of cubic micrometres), while still producing precise analyses of isotope ratios or […]

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26.4.2017

Science Blog: Groundwater as an Energy Resource in Finland

Teksti:
Teppo Arola, Chief Expert

Groundwater can be seen as an option for renewable energy utilisation and not only a source of individual or municipal drinking water. Finland has multiple groundwater reservoirs that are easily exploitable, but groundwater energy is not commonly used for renewable energy production. For this blog, I would like to briefly highlight the outcomes of my […]

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20.3.2017

Science Blog: Assessing the unknown: Finland’s undiscovered mineral resources

Teksti:
Kalevi Rasilainen, Geologist
Pasi Eilu, Senior Scientist

Assessments carried out by the Geological Survey of Finland (GTK) since 2008 indicate that Finland has notable undiscovered resources of several important metals. As of the end of 2016, assessment results have been published for platinum (Pt), palladium (Pd), gold (Au), silver (Ag), copper (Cu), zinc (Zn), nickel (Ni), cobalt (Co), lead (Pb), molybdenum (Mo) […]

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13.2.2017

Science Blog: Erosional sedimentary boundary divides clayey sediments for urban planning

Teksti:
Antti Ojala, Senior Scientist
Joonas Virtasalo, Senior Scientist

Ongoing urbanization has caused profound changes in land use and construction in larger cities, where underground planning and the use of unconsolidated sediments with poorer ground conditions has increased. The expansion of cities to locations where superficial sediments are more challenging for construction purposes has increased the need for comprehensive understanding of the engineering geological properties and […]

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18.12.2016

Science Blog: Portable XRF as an example of advanced on-site analysis methods in mineral exploration

Teksti:
Pertti Sarala, Research Professor, Docent, Ph.D., EurGeol

Recent methodological development has given new possibilities to determine the chemical and mineralogical composition of sample materials with accuracy and quicker than before. Advanced portable field techniques provide a cost-effective way to analyse several types of samples directly in the field and increase the number of methods to be used in exploration. These methods provide […]

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12.12.2016

Science Blog: LiDAR revolution in geoscience

Teksti:
Antti Ojala, Senior Scientist
Jukka-Pekka Palmu, Senior Researcher

The advent of LiDAR (Light Detection And Ranging) technology has enabled rapid documentation of geological and geomorphological characteristics and allowed significant advances in theories on these formations (e.g. Johnson et al., 2015). Previously detected mega-scale landforms, such as large drumlins and end moraine complexes, show up in LiDAR-based digital elevation models (DEM) in greater detail […]

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