Search for: All records | NSF Public Access

Note: When clicking on a Digital Object Identifier (DOI) number, you will be taken to an external site maintained by the publisher. Some full text articles may not yet be available without a charge during the embargo (administrative interval).
What is a DOI Number?

Some links on this page may take you to non-federal websites. Their policies may differ from this site.

Negligible atmospheric release of methane from decomposing hydrates in mid-latitude oceans

https://doi.org/10.1038/s41561-022-01044-8

Joung, DongJoo; Ruppel, Carolyn; Southon, John; Weber, Thomas S.; Kessler, John D. (November 2022, Nature Geoscience)

Full Text Available
Elevated levels of radiocarbon in methane dissolved in seawater reveal likely local contamination from nuclear powered vessels

https://doi.org/10.1016/j.scitotenv.2021.150456

Joung, DongJoo; Ruppel, Carolyn; Southon, John; Kessler, John D. (February 2022, Science of The Total Environment)

Full Text Available
Methane Sources in the Waters of Lake Michigan and Lake Superior as Revealed by Natural Radiocarbon Measurements

https://doi.org/10.1029/2019GL082531

Joung, DongJoo; Leonte, Mihai; Kessler, John D. (May 2019, Geophysical Research Letters)

Full Text Available
Role of the Atchafalaya River Basin in regulating export fluxes of dissolved organic carbon, nutrients, and trace elements to the Louisiana Shelf

https://doi.org/10.1016/j.hydroa.2019.100018

Joung, DongJoo; Guo, Laodong; Shiller, Alan M. (January 2019, Journal of Hydrology X)

Full Text Available
Temporal and spatial variations of dissolved and colloidal trace elements in Louisiana Shelf waters

https://doi.org/10.1016/j.marchem.2016.03.003

Joung, DongJoo; Shiller, Alan M. (April 2016, Marine Chemistry)

Full Text Available
Subsea permafrost carbon stocks and climate change sensitivity estimated by expert assessment

https://doi.org/10.1088/1748-9326/abcc29

Sayedi, Sayedeh Sara; Abbott, Benjamin W; Thornton, Brett F; Frederick, Jennifer M; Vonk, Jorien E; Overduin, Paul; Schädel, Christina; Schuur, Edward A; Bourbonnais, Annie; Demidov, Nikita; et al (December 2020, Environmental Research Letters)
null (Ed.)
Full Text Available
Dissolved barium behavior in Louisiana Shelf waters affected by the Mississippi/Atchafalaya River mixing zone

https://doi.org/10.1016/j.gca.2014.06.021

Joung, DongJoo; Shiller, Alan M. (September 2014, Geochimica et Cosmochimica Acta)

Full Text Available
Radiocarbon in Marine Methane Reveals Patchy Impact of Seeps on Surface Waters

https://doi.org/10.1029/2020GL089516

Joung, DongJoo; Leonte, Mihai; Valentine, David L.; Sparrow, Katy J.; Weber, Thomas; Kessler, John D. (October 2020, Geophysical Research Letters)

Abstract Geological sources of methane (CH₄), such as hydrocarbon seeps, are significant yet poorly constrained sources of CH₄to seawater and the overlying atmosphere_.We investigate the radiocarbon content (¹⁴C) and concentrations of dissolved CH₄in surface waters from the Coal Oil Point seep field to test the hypothesis that geological sources can dominate the regional background signal of CH₄. We find that surface waters with elevated CH₄concentration were populated with seep‐CH₄and that lower concentrations of CH₄were well explained by mixing with the regional background of nongeological CH₄. Substantial differences in concentration and¹⁴C‐CH₄were observed over distances <5 km, demonstrating that surface currents mix background‐CH₄into the seep field. These results indicate that even a prolific seep region like the Santa Barbara Basin exerts limited influence on the regional background of CH₄in the surface layer but is a significant driver of patchiness in oceanic CH₄biogeochemistry.
more » « less
Nutrient depletion as a proxy for microbial growth in Deepwater Horizon subsurface oil/gas plumes

https://doi.org/10.1088/1748-9326/7/4/045301

Shiller, Alan M; Joung, DongJoo (December 2012, Environmental Research Letters)

Full Text Available