Active‐Layer Thickness Measurements Using a Handheld Penetrometer at Boreal and Tundra Sites in Eastern Siberia

Yoshihiro Iijima, Hotaek Park, Pavel Ya. Konstantinov, Grigory G. Pudov and Alexander N. Fedorov

Permafrost and Periglacial Processes, 2017, vol. 28, issue 1, 306-313

Abstract: Active‐layer thickness (ALT) is one of the most robust measures used to assess the impact of climate change on terrestrial permafrost. Testing of a handheld dynamic cone penetrometer showed that it was capable of measuring ALT with the same level of accuracy as conventional methods in boreal and tundra sites in eastern Siberia. The penetrometer also characterised the vertical structure of ground hardness within the active layer. The vertical profile of penetrometer measurements corresponded closely with soil plasticity and the liquid limit in high‐centred polygons produced by thermokarst subsidence in dry grassland areas at a boreal site at Churapcha. The ALT was markedly deeper (>70 cm) at gravelly slope points adjacent to a wet tundra plain (

Date: 2017
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https://doi.org/10.1002/ppp.1908

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Persistent link: https://EconPapers.repec.org/RePEc:wly:perpro:v:28:y:2017:i:1:p:306-313

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