Régions: Inuvialuit Settlement Region, Gwich'in Settlement Area
étiquettes: physical sciences, environmental monitoring, methane, thermokarst, energy fluxes
| chercheur principal: | Boike, Julia (1) |
| Nᵒ de permis: | 16683 |
| Organisation: | Alfred Wegener Institute |
| Année(s) de permis: |
2021
2020
2019
2018
|
| Délivré: | janv. 20, 2020 |
| Équipe de projet: | Julia Boike, William Cable, Stephan Lange, Ingeborg Bussmann |
Objectif(s): To test new equipment for characterizing the energy fluxes from and around thermokarst slumps; to establish a baseline for future subsidence measurements; and, to quantify lake and atmospheric methane concentrations in relation to thermokarst slumps.
Description du projet: This licence has been issued for the scientific research application No.4649. The goals for this expedition are to test new equipment for characterizing the energy fluxes from and around thermokarst slumps and to establish a baseline for future subsidence measurements. Additionally, lake and atmospheric methane concentrations in relation to thermokarst slumps will be quantified. The research team will conduct ground-truth surveys using a differential GPS. Small GPS observation stations will be installed, approximately 2 meters above the surface, to collect GPS data for the analysis of reflected GPS signals. Analysis of these signals will allow us to observe any surface movement that might be due to ground subsidence. The research team will deploy one environmental monitoring station to measure air temperature and relative humidity, wind, net radiation, soil temperature and moisture, and soil heat flux. The team will use a portable environmental monitoring station to monitor outgoing solar radiation over different vegetation communities. Distributed soil temperature and heat flux stations will be deployed to monitor energy fluxes in the ground at different locations. a portable greenhouse gas analyser will be use to measure methane concentrations in lakes and atmosphere. All installations will be performed in a way that minimizes the impact on the environment, "leave no trace", as it is also important for the team that the measurements come from undisturbed areas. The results will be free available and free of charge for everybody. The community will be informed via meetings about the projects as well about the results. The fieldwork for this study will be conducted from July 1, 2020 to September 30, 2020.
