Dissolved methane concentrations recorded at cold seeps on the Central Chilean Margin

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Wieman, Scott; Jason Kapit; Michel, Anna, 2026, "Dissolved methane concentrations recorded at cold seeps on the Central Chilean Margin", https://doi.org/10.26027/DATAWII2ES, MBLWHOI Library Dataverse, V1, UNF:6:L8GzdboAIWz2Z1zXLkf+cw== [fileUNF]

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Description	This dataset consists of dissolved methane measurements made at cold seep sites along the central Chilean Margin as part of research cruise FKt241011 aboard R/V Falkor(too). Measurements were made using the Sensor for Aqueous Gases in the Environment (SAGE), which was developed by the Chemical Sensors Lab at WHOI (Kapit and Michel, 2021; Kapit et al., 2024). SAGE was deployed on ROV SuBastian for all dives, and the latitude, longitude, depth, and altitude information provided with each datafile is taken from the ROV sprint navigation records. Methane was measured in µatm and converted to nM following Wiesenburg & Guinasso (1979) using temperature and pressure data from the CTD on board ROV SuBastian.
Subject	Earth and Environmental Sciences; Engineering; Physics
Keyword	methane, cold seep, Chilean Margin, Sensor for Aqueous Gases in the Environment (SAGE)
Related Publication	Is Cited By: Wieman, S.T., Skarke, A., Beeson, J., Frates, E., Villar-Muñoz, L., Oppo, D., Youngs, S., Kapit, J., Marlow, J., Michel, A.P.M. (2026). Quantifying Deep Ocean Methane Along the Central Chilean Margin. Geophysical Research Letters. Forthcoming
Notes	This work was supported by Schmidt Marine Technology Partners (G-22-63744), the WHOI Ocean Ventures Fund, and Schmidt Ocean Institute. We additionally want to acknowledge the Captain and crew of R/V Falkor(too), the ROV SuBastian team, and the science party of FKt241011.
License/Data Use Agreement	CC BY-NC 4.0

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	Dive_725_CH4.tab Tabular Data - 2.3 MB Published Mar 26, 2026 2 Downloads 6 Variables, 31338 Observations UNF:6:JbYLp1sDPfErUpJTitSFcA==	Preview "Dive_725_CH4.tab" Access File File Access Public Download Options Comma Separated Values (Original File Format) Tab-Delimited RData Download Metadata DDI Codebook v2 Data File Citation Download EndNote XML Download RIS Download BibTeX
	Dive_726_CH4.tab Tabular Data - 2.9 MB Published Mar 26, 2026 0 Downloads 6 Variables, 39398 Observations UNF:6:QGuO6lgBRsgnGin6qP4fSQ==	Preview "Dive_726_CH4.tab" Access File File Access Public Download Options Comma Separated Values (Original File Format) Tab-Delimited RData Download Metadata DDI Codebook v2 Data File Citation Download EndNote XML Download RIS Download BibTeX
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	Dive_729_CH4.tab Tabular Data - 2.7 MB Published Mar 26, 2026 0 Downloads 6 Variables, 36465 Observations UNF:6:2kddbygUPvGE6ec2NbaVtg==	Preview "Dive_729_CH4.tab" Access File File Access Public Download Options Comma Separated Values (Original File Format) Tab-Delimited RData Download Metadata DDI Codebook v2 Data File Citation Download EndNote XML Download RIS Download BibTeX
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	Dive_736_CH4.tab Tabular Data - 3.9 MB Published Mar 26, 2026 0 Downloads 6 Variables, 51652 Observations UNF:6:vqg8/RVYDM1VNe9VpJz/HA==	Preview "Dive_736_CH4.tab" Access File File Access Public Download Options Comma Separated Values (Original File Format) Tab-Delimited RData Download Metadata DDI Codebook v2 Data File Citation Download EndNote XML Download RIS Download BibTeX
	Dive_737_CH4.tab Tabular Data - 1.5 MB Published Mar 26, 2026 0 Downloads 6 Variables, 19835 Observations UNF:6:6Fhl3cKx3j4SDD9Te9hhOA==	Preview "Dive_737_CH4.tab" Access File File Access Public Download Options Comma Separated Values (Original File Format) Tab-Delimited RData Download Metadata DDI Codebook v2 Data File Citation Download EndNote XML Download RIS Download BibTeX

Citation Metadata

Persistent Identifier	doi:10.26027/DATAWII2ES
Publication Date	2026-03-26
Title	Dissolved methane concentrations recorded at cold seeps on the Central Chilean Margin
Author	https://ror.org/03zbnzt98https://orcid.org/0000-0002-6415-5293 https://ror.org/03zbnzt98https://orcid.org/0009-0007-6171-1024 https://ror.org/03zbnzt98https://orcid.org/0000-0001-9319-0592
Point of Contact	Use email button above to contact. Wieman, Scott (Woods Hole Oceanographic Institution)
Description	This dataset consists of dissolved methane measurements made at cold seep sites along the central Chilean Margin as part of research cruise FKt241011 aboard R/V Falkor(too). Measurements were made using the Sensor for Aqueous Gases in the Environment (SAGE), which was developed by the Chemical Sensors Lab at WHOI (Kapit and Michel, 2021; Kapit et al., 2024). SAGE was deployed on ROV SuBastian for all dives, and the latitude, longitude, depth, and altitude information provided with each datafile is taken from the ROV sprint navigation records. Methane was measured in µatm and converted to nM following Wiesenburg & Guinasso (1979) using temperature and pressure data from the CTD on board ROV SuBastian.
Subject	Earth and Environmental Sciences; Engineering; Physics
Keyword	methane cold seep Chilean Margin Sensor for Aqueous Gases in the Environment (SAGE)
Related Publication	Is Cited By: Wieman, S.T., Skarke, A., Beeson, J., Frates, E., Villar-Muñoz, L., Oppo, D., Youngs, S., Kapit, J., Marlow, J., Michel, A.P.M. (2026). Quantifying Deep Ocean Methane Along the Central Chilean Margin. Geophysical Research Letters. Forthcoming Cites: Kapit, J., & Michel, A. P. M. (2021). Dissolved gas sensing using an anti-resonant hollow core optical fiber. Applied Optics, 60(33), 10354. https://doi.org/10.1364/AO.439787 Cites: Kapit, J., Youngs, S., Pardis, W. A., Padilla, A. M., & Michel, A. P. M. (2024). An Underwater Methane Sensor Based on Laser Spectroscopy in a Hollow Core Optical Fiber. ACS Sensors, 9(11), 5896–5905. https://doi.org/10.1021/acssensors.4c01563 Cites: Wiesenburg, D. A., & Guinasso, N. L. (1979). Equilibrium Solubilities of Methane, Carbon Monoxide, and Hydrogen in Water and Sea Water. Journal of Chemical and Engineering Data, 24(4), 2025. https://doi.org/10.1021/je60083a006
Notes	This work was supported by Schmidt Marine Technology Partners (G-22-63744), the WHOI Ocean Ventures Fund, and Schmidt Ocean Institute. We additionally want to acknowledge the Captain and crew of R/V Falkor(too), the ROV SuBastian team, and the science party of FKt241011.
Funding Information	Schmidt Marine Technology Partners: G-22-63744
Depositor	Jester, Ashley
Deposit Date	2026-03-24

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