Persistent Identifier
|
doi:10.18710/EIFZ2J |
Publication Date
|
2019-09-30 |
Title
| Replication Data for: Reduced methane seepage from Arctic sediments during cold bottom-water conditions |
Author
| Ferré, Bénédicte (UiT The Arctic University of Norway) - ORCID: 0000-0003-1646-9287
Jansson, Pär (UiT The Arctic University of Norway) - ORCID: 0000-0002-6729-9428
Moser, Manuel (UiT The Arctic University of Norway) - ORCID: 0000-0002-3135-3365
Serov, Pavel (UiT The Arctic University of Norway) - ORCID: 0000-0001-6417-9941
Portnov, Alexei (The Ohio State University) - ORCID: 0000-0003-4930-8308
Graves, Carolyn (Baltic Sea Research Institute, IOW, Germany) - ORCID: 0000-0003-3050-7702
Panieri, Giuliana (UiT The Arctic University of Norway) - ORCID: 0000-0001-9411-1729
Gründger, Friederike (UiT The Arctic University of Norway) - ORCID: 0000-0002-7386-3603
Berndt, Christian (GEOMAR Helmholtz Centre for Ocean Research, Kiel, Germany) - ORCID: 0000-0001-5055-0180
Lehmann, Moritz F (University of Basel) - ORCID: 0000-0003-0626-5942
Niemann, Helge (University of Basel) - ORCID: 0000-0002-3468-8304 |
Point of Contact
|
Use email button above to contact.
Ferré, Bénédicte (UiT The Arctic University of Norway) |
Description
| This dataset contains all the necessary data for reproducing the results in the article. "Reduced methane seepage from Arctic sediments during cold bottom-water conditions" (2020-10-28)
Abstract: Large amounts of methane are trapped within sub-seabed sediments in the Arctic ocean. Seasonal bottom water warming may induce the release of methane from the seafloor, yet methane seepage surveys mainly occur in summer. Here, we compare the seepage activity along the gas hydrate stability limit offshore Svalbard between cold and warm seasons. Hydro-acoustic surveys revealed decreased seepage activity during cold bottom water conditions, with 43 % fewer flares and methane release rates than under warmer conditions. For the first time, we demonstrate that cold seeps “hibernate” during cold seasons when more free methane gas becomes trapped in the sub-seabed sediments. Such a greenhouse gas capacitor increases the potential for methane release during summer months. Seasonal bottom water temperature variations are common in the Arctic continental shelves, and thus methane-seep hibernation is likely a widespread phenomenon underappreciated in previous global methane budgets. (2019-09-23) |
Subject
| Earth and Environmental Sciences |
Keyword
| Methane
Cold seep
Variability
Arctic
Microbial oxidation
Flare
Backscatter
Ocean
Seasonal |
Related Publication
| Ferré, B., Jansson, P.G., Moser, M. et al. (2020) Reduced methane seepage from Arctic sediments during cold bottom-water conditions. Nature Geoscience 13, 144–148 (2020). doi: 10.1038/s41561-019-0515-3 https://doi.org/10.1038/s41561-019-0515-3 |
Language
| English |
Producer
| UiT The Arctic University of Norway (UiT) https://en.uit.no/ |
Production Date
| 2016-05-08 |
Production Location
| West of Svalbard |
Funding Information
| Norwegian Research Council: 223259 |
Distributor
| UiT The Arctic University of Norway (UiT The Arctic University of Norway) https://dataverse.no/dataverse/uit |
Depositor
| Jansson, Pär |
Deposit Date
| 2019-09-23 |
Time Period
| Start Date: 2016-05-06 ; End Date: 2016-05-08 |
Date of Collection
| Start Date: 2016-05-06 ; End Date: 2016-05-08 |
Data Type
| Water temperature; Salinity; Pressure/ Depth; Methane free gas flow rate; Methane concentration; Methane oxidation rates |