Replication Data for: Reduced methane seepage from Arctic sediments during cold bottom-water conditionsdoi:10.18710/EIFZ2JDataverseNO2019-09-303Ferré, Bénédicte; Jansson, Pär; Moser, Manuel; Serov, Pavel; Portnov, Alexei; Graves, Carolyn; Panieri, Giuliana; Gründger, Friederike; Berndt, Christian; Lehmann, Moritz F; Niemann, Helge, 2019, "Replication Data for: Reduced methane seepage from Arctic sediments during cold bottom-water conditions", https://doi.org/10.18710/EIFZ2J, DataverseNO, V3, UNF:6:tZnvI4jmCq7dHtQ/8XFbww== [fileUNF]Replication Data for: Reduced methane seepage from Arctic sediments during cold bottom-water conditionsdoi:10.18710/EIFZ2JFerré, BénédicteJansson, PärMoser, ManuelSerov, PavelPortnov, AlexeiGraves, CarolynPanieri, GiulianaGründger, FriederikeBerndt, ChristianLehmann, Moritz FNiemann, HelgeUiT The Arctic University of Norway2016-05-08West of Svalbard223259DataverseNOUiT The Arctic University of NorwayFerré, BénédicteJansson, Pär2019-09-23Earth and Environmental SciencesMethaneCold seepVariabilityArcticMicrobial oxidationFlareBackscatterOceanSeasonalThis dataset contains all the necessary data for reproducing the results in the article. "Reduced methane seepage from Arctic sediments during cold bottom-water conditions"<p/> 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.2016-05-062016-05-082016-05-062016-05-08Svalbard and Jan Mayen9.3333339.66666778.578.666667Water temperatureSalinityPressure/ DepthMethane free gas flow rateMethane concentrationMethane oxidation rates<a href="http://creativecommons.org/publicdomain/zero/1.0">CC0 1.0</a>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).10.1038/s41561-019-0515-3Ferré, 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).CH4_concentration.tab1208text/tab-separated-valuesUNF:6:C2v1FvNfqnzsds45vD9Hsw==Depth_list.tab3442text/tab-separated-valuesUNF:6:1mt0I/eZ9g3LP/cMSqgEdw==Free_gas_flow_rates.tab1964text/tab-separated-valuesUNF:6:16rBDKlfeI84mMzlkbVRsA==Methane_oxidation_rates.tab113text/tab-separated-valuesUNF:6:6mLoLxZIabXhtBZWtI3eaw==Station674.0679.9680.0120.0.0.03.4916466944201914685.0UNF:6:+NxtHrGsEX/lM89C+Xm6IQ==Date120.042497.042497.042498.042496.0.1.00419289050686760.0UNF:6:eYo8Rhz41d7pJrNJiwQ8EA==Longitude[°E]9.518.9.4759999999999990.09.4756120.09.4330.02397561786692556UNF:6:JCP7ohmEF/VeMhOzXMnnyA==Latitude[°N]78.55460.078.551120.078.554578.557.0.0016922959393133924UNF:6:W04kWwbsWCMR+H6TBGlSng==Depth[m]418.0.211.525120.00.04.0138.54247065961616229.5UNF:6:h72Xk5tBjaxqz+fmEI4AEA==Temperature[°C]1.54.72.71.1336661234913128.120.00.02.8466666666666667UNF:6:ivyzOFOZQGhS/z1uGea7Lw==Salinity[PSU]120.034.97499999999999435.1134.8634.9778333333333360.0.0.09351388099301308UNF:6:0K7DZXD751tnTk4PNVxkZg==CH4nmol/l111.02.011.1214117693585294.7394957983193295119.01.0.1.0UNF:6:FbGNe/MhaPqrLr4VAgJDrg==FlaresdepthHe-387-380.1272579459011418.77126191814832344.0-414.44390869.-271.43646240.0-384.95179748500004UNF:6:d5A6yIEUoMP/7iWLgLBuhA==FlaresdepthCAGE16-4.-416.25196.017.389538978609902-261.559997558593-387.574996948242-384.2858676521141148.0UNF:6:zQDf2JqCCpYbRYVKn4UrcQ==Longitude196.09.5365.0.09.378299999999999.4412999999999959.4457530612244880.03619673651271067UNF:6:Ssrdp96JjVMIV77wkepMkg==Latitude78.537899999999978.5875984693877178.6363999999999.196.00.078.590599999999950.028462845735951144UNF:6:1jFLMW23+oZyo4JcOJOo6A==Depth[m].0.0398.3315370.2224517.619668265904195366.36288335204046196.0247.0687UNF:6:40Ep4SsxCrSHz4EDG6If9w==Flowrate[ml/min]196.01852.35097594.46470080867334.2.2646242.699299782546520.015.7151UNF:6:ZkGy3GaZHNAFiIVhl/E7ZQ==depth-250.0-227.27272727272728-400.00.00.011.0.148.93561757289015UNF:6:IjDgUllqmh6RTN68bcdhaA==rMOx[nmolL-1d-1]0.00.0.4.3009376005729254E-40.001189053400357222411.03.4712821123081137E-41.1791742520639152E-4UNF:6:ups0yFziQLJGwS19GCfrOA==rMOxStdev0.00164461600951418760.0.3.924372753084215E-45.640867685336107E-41.1388707848573937E-40.011.0UNF:6:9Y34nfaV+83Ly0loIvJF6A==00_ReadMe.txttext/plainCH4_concentration.txttext/plainDepth_list.txttext/plainFree_gas_flow_rates.txttext/plainMethane_oxidation_rates.txttext/plain