Diagnosing shallow-water CH4 sources based on relationship between dissolved CH4 and oxygen

What is it about?

Based on a comprehensive study on CH4 cycling in the Bohai Sea, the indicative role of DO in identifying multiple CH4 sources was demonstrated.

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Why is it important?

[CH4] showed vigorous spatial variation in the water column of the central Bohai Sea in summer 2018. This variation was caused by CH4 release from three types of seafloor sources. These release types can be identified by different relationships between CH4 and DO in the water column. This approach may have applicability in many other coastal systems with similar biogeochemical and geological conditions.