A5025259583- Climate change and permafrost
- Cryospheric studies and observations
- Geology and Paleoclimatology Research
- Geological Studies and Exploration
- Soil and Unsaturated Flow
- Peatlands and Wetlands Ecology
- Methane Hydrates and Related Phenomena
- Atmospheric and Environmental Gas Dynamics
- Indigenous Studies and Ecology
- Geotechnical and Geomechanical Engineering
- Mine drainage and remediation techniques
- Hydrocarbon exploration and reservoir analysis
- Arctic and Antarctic ice dynamics
- Geochemistry and Geologic Mapping
- Soil and Environmental Studies
- Smart Materials for Construction
- Soil Geostatistics and Mapping
- Heavy metals in environment
Government of Northwest Territories
2022-2023
Wilfrid Laurier University
2023
Stockholm University
2014-2020
University of Amsterdam
2011
Abstract Permafrost‐affected ecosystems are important components in the global carbon (C) cycle that, despite being vulnerable to disturbances under climate change, remain poorly understood. This study investigates ecosystem storage two contrasting continuous permafrost areas of NE and East Siberia. Detailed partitioning soil organic (SOC) phytomass (PC) is analyzed for one tundra (Kytalyk) taiga (Spasskaya Pad/Neleger) area. In total, 57 individual field sites (24 33 respective areas) have...
Arctic wetlands are known methane (CH
This paper documents the first comprehensive inventory of thermokarst and thaw-sensitive terrain indicators for a 2 million km2 region northwestern Canada. is accomplished through Thermokarst Mapping Collective (TMC), research collaborative to systematically permafrost thaw sensitivity by mapping aerial assessments across Northwest Territories (NT), The increase in NT-based capacity has fostered science leadership collaboration with government, academic, community researchers enable project...
Abstract. Soils in the northern high latitudes are a key component global carbon cycle; permafrost region covers 22 % of Northern Hemisphere land surface area and holds almost twice as much atmosphere. Permafrost soil organic matter stocks represent an enormous long-term sink which is risk switching to net source future. Detailed knowledge about quantity mechanisms controlling storage utmost importance for our understanding potential impacts feedbacks on climate change. Here we present...
On January 1st, 2024, the Mw 7.5 Noto Peninsula earthquake ruptured on a series of coastal offshore reverse faults in back arc central Japan. Closest to rupture, northwest, rocks uplifted as much 4.4 m (Fukushima Yo et al., 2024). The coastline accordingly moved seaward by up 200 creating new wide bedrock platforms. Recent Holocene terraces mapped along northern coast (Shishikura 2020), where coseismic uplift was greatest 1st suggest similar past ruptures. Many follow at depth ca. 60 below...
Abstract. The large stocks of soil organic carbon (SOC) in soils and deposits the northern permafrost region are sensitive to global warming thawing. potential release this (C) as greenhouse gases atmosphere does not only depend on total quantity matter (SOM) affected by thawing, but it also depends its lability (i.e., rate at which will decay). In study we develop a simple robust classification scheme SOM for main types region. is based widely available geochemical parameters landscape unit...
Abstract Decomposition of soil organic matter (SOM) in permafrost terrain and the production greenhouse gases is a key factor for understanding climate change‐carbon feedbacks. Previous studies have shown that SOM decomposition mostly controlled by temperature, moisture, carbon‐nitrogen ratio (C:N). However, focus has generally been on site‐specific processes little known about variations controls across Arctic sites. For assessing decomposition, we retrieved 241 samples from 101 profiles...
In this study we assess the total storage, landscape distribution, and vertical partitioning of soil organic carbon (SOC) stocks on Brøgger Peninsula, Svalbard. This type high Arctic area is underrepresented in SOC databases for northern permafrost region. Physico-chemical, elemental, radiocarbon (14C) dating analyses were carried out thirty-two profiles. Results upscaled using both a land cover classification (LCC) landform (LFC). Both LCC LFC approaches provide weighted mean 0–100 cm...
Accurate quantity and distribution estimates of permafrost soil organic carbon (SOC) stocks are needed to project potential feedbacks climate, following warming. Still, upscaling from local field observations regional circumarctic assessments remains a challenge. Here we explore elevation-based techniques for High-Arctic SOC stocks. We combine two detailed, high-resolution inventories on Spitsbergen (Svalbard) with validation data. find clear relationship between elevation content, use this...
Abstract. Soils in the northern high latitudes are a key component global carbon cycle; permafrost region covers 22 % of Northern Hemisphere and holds almost twice as much atmosphere. Permafrost soil organic matter stocks represent an enormous long-term sink which is risk switching to net source future. Detailed knowledge about quantity mechanisms controlling storage utmost importance for our understanding potential impacts feedbacks on climate change. Here we present geospatial dataset...
Abstract. The large stocks of soil organic carbon (SOC) in soils and deposits the northern permafrost region are sensitive to global warming thawing. potential release this (C) as greenhouse gases atmosphere does not only depend on total quantity matter (SOM) affected by thawing, but also its lability (i.e. rate at which it will decay). In study we develop a simple robust classification scheme SOM for main types region. is based widely available geochemical parameters landscape unit classes,...