Seismic emissions and frostquakes: mechanisms of thermal stress release during seasonal freezing and melting of soft soils in subarctic areas ...
<!--!introduction!--> In this study the analysis of continuous seismic data is used to investigate the processes related to seismic events generated through the release of accumulated thermal stresses in the upper water-saturated soils during freezing and melting. Under certain conditions, the...
| Main Authors: | , , , , |
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| Format: | Conference Object |
| Language: | unknown |
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GFZ German Research Centre for Geosciences
2023
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.57757/iugg23-1517 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018092 |
| Summary: | <!--!introduction!--> In this study the analysis of continuous seismic data is used to investigate the processes related to seismic events generated through the release of accumulated thermal stresses in the upper water-saturated soils during freezing and melting. Under certain conditions, the stresses are released as a swarm of small-scale magnitude impulses, called cryoseismic emission, which have no or very little effect on the infrastructures. In some cases, however, this stress release can result in seismic events called frostquakes. Such events can be of relatively large magnitude, and they are capable to produce cracks on the ground surface and damage infrastructures such as buildings and roads. To understand what combinations of weather and ground conditions results in these different stress release mechanisms, we installed two seismic arrays with co-located soil stations in two geographically different sites in Northern Finland characterized by different weather, geological and hydrogeological ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ... |
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