Patterns of Discontinuous Permafrost Thaw in Peatlands

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Devoie, Élise; Quinton, William L., 2021, "Patterns of Discontinuous Permafrost Thaw in Peatlands", https://doi.org/10.5683/SP2/J2KBPF, Borealis, V1, UNF:6:CjFABkQh9rJuiVr1MeSIKQ== [fileUNF]

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Description	Climate warming in discontinuous permafrost peatlands is causing permafrost loss and changes in ecosystem dynamics at an unprecedented rate. Though rates of permafrost loss and landscape change have been widely documented based on remote sensing and field measurements, the local mechanisms of permafrost degradation remain under-studied. Data collected over three decades of research in the Scotty Creek study basin in the southern Northwest Territories of Canada was analyzed to find vertical conduction accounts for most vertical permafrost degradation, while advective processes are needed to describe thaw in features which are subject to seasonal flows. It was found that heat advection was necessary to describe lateral thaw rates, which are up to an order of magnitude greater than vertical thaw. Thaw from below, driven either by the geothermal gradient or groundwater flow, may account for up to 10 cm of permafrost thaw annually. Once these thaw mechanisms were established, the hydrologic, thermodynamic and geophysical function of taliks in different parts of the landscape were considered in light of the data collected at the and surrounding area. This analysis is supported through the use of ERT data detailing the subsurface permafrost structure. Data collected at Scotty Creek points to a pattern of talik evolution and permafrost degradation. This understanding of local thaw mechanisms and trajectory is an important first step in being able to predict distributed permafrost thaw in peatlands. This research data is associated with Scotty Creek Research Station, 50km south of Fort Simpson, in the Northwest Territories, Canada. Learn more about SCRS and its research at http://scottycreek.com.
Subject	Earth and Environmental Sciences
Keyword	permafrost
Related Publication	Devoie, É. G., Craig, J. R., Dominico, M., Carpino, O., Connon, R. F., Rudy, A. C. A., & Quinton, W. L. (2021). Mechanisms of Discontinuous Permafrost Thaw in Peatlands. Journal of Geophysical Research: Earth Surface. doi: https://doi.org/10.1029/2021JF006204
License/Data Use Agreement	CC BY-NC-SA 4.0

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	readme.txt Plain Text - 8.9 KB Published Oct 19, 2021 12 Downloads MD5: dcbd84feebf08bf980374ba1dd4aad41 Readme file developed by Laurier Library Research Data Services	Preview "readme.txt" Access File File Access Public Download Options Plain Text Download Metadata Data File Citation EndNote XML RIS BibTeX
	SC_Bog_Temp.tab Tabular Data - 1.3 MB Published Oct 19, 2021 16 Downloads 3 Variables, 51360 Observations UNF:6:XYMjOBQtHwIxpJMyx6Jtmg==	Access File File Access Public Download Options Comma Separated Values (Original File Format) Tab-Delimited RData Download Metadata Variable Metadata Data File Citation EndNote XML RIS BibTeX Explore Options Data Explorer
	SC_ConnectedTalik_Thaw.csv Comma Separated Values - 1.0 KB Published Oct 19, 2021 10 Downloads MD5: 757542609f2d6180168056fe04da57e6	Access File File Access Public Download Options Comma Separated Values Download Metadata Data File Citation EndNote XML RIS BibTeX
	SC_Connected_Modelled_Thaw.tab Tabular Data - 1.1 KB Published Oct 19, 2021 9 Downloads 2 Variables, 93 Observations UNF:6:kyyU8rypbCM3JUzf2pptvg==	Access File File Access Public Download Options Comma Separated Values (Original File Format) Tab-Delimited RData Download Metadata Variable Metadata Data File Citation EndNote XML RIS BibTeX Explore Options Data Explorer
	SC_Deep_thermistor_Fen_logged.tab Tabular Data - 2.8 MB Published Oct 19, 2021 9 Downloads 9 Variables, 39434 Observations UNF:6:wHr/Q2Q4DMtBqyoCYrEETA==	Access File File Access Public Download Options Comma Separated Values (Original File Format) Tab-Delimited RData Download Metadata Variable Metadata Data File Citation EndNote XML RIS BibTeX Explore Options Data Explorer
	SC_Deep_thermistor_WinterRoad_logged.xlsx MS Excel Spreadsheet - 1.3 MB Published Oct 19, 2021 8 Downloads MD5: 9a757c961c5931de62b0ed192a0b917d	Access File File Access Public Download Options MS Excel Spreadsheet Download Metadata Data File Citation EndNote XML RIS BibTeX
	SC_Fen_WaterLeve_Temperature.csv Comma Separated Values - 4.7 MB Published Oct 19, 2021 11 Downloads MD5: 14b836daf820ec5facbb83de3ddff959	Access File File Access Public Download Options Comma Separated Values Download Metadata Data File Citation EndNote XML RIS BibTeX
	SC_FlowThrough_Thaw.tab Tabular Data - 2.0 KB Published Oct 19, 2021 11 Downloads 9 Variables, 43 Observations UNF:6:yeBI/OFARxqBezMOAjv7yg==	Access File File Access Public Download Options MS Excel Spreadsheet (Original File Format) Tab-Delimited RData Download Metadata Variable Metadata Data File Citation EndNote XML RIS BibTeX Explore Options Data Explorer
	SC_GroundHeatFlux.tab Tabular Data - 1.9 MB Published Oct 19, 2021 9 Downloads 3 Variables, 54112 Observations UNF:6:Y8If5KqVd192ZQKr+3V+SA==	Access File File Access Public Download Options Comma Separated Values (Original File Format) Tab-Delimited RData Download Metadata Variable Metadata Data File Citation EndNote XML RIS BibTeX Explore Options Data Explorer
	SC_IsolatedTalik_Thaw.csv Comma Separated Values - 2.9 KB Published Oct 19, 2021 9 Downloads MD5: 359762cfddf4be151354b439a38c3f8a	Access File File Access Public Download Options Comma Separated Values Download Metadata Data File Citation EndNote XML RIS BibTeX

Citation Metadata

Persistent Identifier	doi:10.5683/SP2/J2KBPF
Publication Date	2021-10-19
Title	Patterns of Discontinuous Permafrost Thaw in Peatlands
Author	Devoie, Élise (Wilfrid Laurier University) - ORCID: https://orcid.org/0000-0003-1752-8437 Quinton, William L. (Wilfrid Laurier University) - ORCID: https://orcid.org/ 0000-0001-5707-4519
Point of Contact	Use email button above to contact. Laurier Library Research Data Services (Wilfrid Laurier University Library) Devoie, Élise (University of Waterloo)
Description	Climate warming in discontinuous permafrost peatlands is causing permafrost loss and changes in ecosystem dynamics at an unprecedented rate. Though rates of permafrost loss and landscape change have been widely documented based on remote sensing and field measurements, the local mechanisms of permafrost degradation remain under-studied. Data collected over three decades of research in the Scotty Creek study basin in the southern Northwest Territories of Canada was analyzed to find vertical conduction accounts for most vertical permafrost degradation, while advective processes are needed to describe thaw in features which are subject to seasonal flows. It was found that heat advection was necessary to describe lateral thaw rates, which are up to an order of magnitude greater than vertical thaw. Thaw from below, driven either by the geothermal gradient or groundwater flow, may account for up to 10 cm of permafrost thaw annually. Once these thaw mechanisms were established, the hydrologic, thermodynamic and geophysical function of taliks in different parts of the landscape were considered in light of the data collected at the and surrounding area. This analysis is supported through the use of ERT data detailing the subsurface permafrost structure. Data collected at Scotty Creek points to a pattern of talik evolution and permafrost degradation. This understanding of local thaw mechanisms and trajectory is an important first step in being able to predict distributed permafrost thaw in peatlands. This research data is associated with Scotty Creek Research Station, 50km south of Fort Simpson, in the Northwest Territories, Canada. Learn more about SCRS and its research at http://scottycreek.com.
Subject	Earth and Environmental Sciences
Keyword	permafrost
Related Publication	Devoie, É. G., Craig, J. R., Dominico, M., Carpino, O., Connon, R. F., Rudy, A. C. A., & Quinton, W. L. (2021). Mechanisms of Discontinuous Permafrost Thaw in Peatlands. Journal of Geophysical Research: Earth Surface. doi: https://doi.org/10.1029/2021JF006204 https://doi.org/10.1029/2021JF006204
Language	English
Producer	Quinton, William L. (Wilfrid Laurier University)
Production Date	2020-01-01
Production Location	Scotty Creek Research Station
Contributor	Researcher : Devoie, Élise
Funding Information	NSERC: RGPIN-2020-07229 ArcticNet: 2018-P02
Distributor	Laurier Library Research Data Services (Wilfrid Laurier University Library) https://library.wlu.ca
Distribution Date	2021-10-19
Depositor	Devoie, Élise
Deposit Date	2021-03-30
Time Period	Start Date: 1998-08-01 ; End Date: 2020-01-01
Date of Collection	Start Date: 1998-08-01 ; End Date: 2020-01-01
Data Type	meteorological timeseries data
Series	Scotty Creek Research Data: Research Data associated with Scotty Creek Research Station, 50km south of Fort Simpson, in the Northwest Territories, Canada. Learn more about SCRS and its research at scottycreek.com.
Related Dataset	Devoie, Élise; Quinton, William L, 2021, "Data for: Subsurface flow measurements using passive flux meters in variably‐saturated cold‐regions landscapes", https://doi.org/10.5683/SP2/YR6TQ8, Scholars Portal Dataverse.; Quinton, William L.; Connon, Ryan F.; Devoie, Élise G., 2019, "Permafrost Monitoring at Scotty Creek Research Station, 2011-2017 [Northwest Territories, Canada]", https://doi.org/10.5683/SP2/BTRLHO, Scholars Portal Dataverse.; Haynes, Kristine M.; Connon, Ryan F.; Quinton, William L., 2018, "Hydrometeorological measurements in peatland-dominated, discontinuous permafrost at Scotty Creek, Northwest Territories, Canada", https://doi.org/10.5683/SP/OQDRJG, Scholars Portal Dataverse.; Quinton, William; Connon, Ryan; Devoie, Élise; Hayashi, Masaki; Veness, Tyler, 2018, "Micrometeorological and freeze-thaw data at Scotty Creek, NT 2001-2017 [Canada]", https://doi.org/10.5683/SP/EMDB8K, Scholars Portal Dataverse.

Geospatial Metadata

Geographic Coverage	Canada, Northwest Territories, Scotty Creek Research Station

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