Simulation of freezing-thawing cycles in a permafrost microcosm for assessing microbial methane production under extreme conditions
Arctic Region ; Biogenic process ; Cold area ; Freeze-thaw cycle ; Humid environment ; Micro-organism ; Periglacial features ; Permafrost ; Russia ; Simulation ; West Siberia
The AA. describe a new technique for the simulation of natural freezing-thawing cycles of the active layer in a permafrost microcosm. The core temperature, moisture and methane concentration and release in different depths of the microcosm can
be measured continuously under controlled freezing and thawing conditions. The simulation experiment provides an insight into the activity of microorganisms and turnover rates under various cryogenic conditions (i.e. frozen, partly frozen, unfrozen). The data
Application of differential global positioning systems to monitor frost heave and thaw settlement in tundra environments
This paper describes the methodology employed to resolve vertical changes associated with frost heave and thaw settlement in northern Alaska, at Prudhoe Bay, using differential global positioning systems (DGPS) technology. Traditional profile
The use of tomographic geoelectrical measurements for the detection of ground ice occurrences in mountainous regions is evaluated. Because isolated ground ice occurences in a warming climate may be subject to rapid thawing, they present a future
hazard in the context of thawing-permafrost-induced landslides and rockfalls. The method is applied to various types of permafrost occurences in the European Alps. The influence of topography, measurement geometry and different inversion parameters