METHANE DISTRIBUTION IN THE ELBE ESTUARY WITH HIGH SPATIAL RESOLUTION


Contact
Ingeborg.Bussmann [ at ] awi.de

Abstract

Rivers are suspected to be a main source of greenhouse gases (methane and carbon dioxide) for coastal seas, while the role of the interjacent tidal flats is still ambiguous. In this study we investigated the role of the river Elbe and the Elbe estuary as source of methane to the North Sea. With high spatial resolution by an underway degassing system and subsequent analysis by cavity ring down spectroscopy a high resolution picture of the methane distribution in surface waters and hydrographic parameters was obtained in autumn to spring 2018/19. For most areas, riverine methane was simply diluted by seawater, overlain by a strong tidal influence. However at several occasions unexpected high methane concentrations were observed. By further detailed analysis we will elucidate the role of riverine versus tidal impact on the methane flux from the coastal North Sea



Item Type
Conference (Talk)
Authors
Divisions
Primary Division
Programs
Primary Topic
Research Networks
Peer revision
Not peer-reviewed
Publication Status
Published
Event Details
International Estuarine Biogeochemistry Symposium, 04 Jun 2019 - 05 Jun 2019, Vigo, Spain.
Eprint ID
49696
Cite as
Winkler, H. and Bussmann, I. (2019): METHANE DISTRIBUTION IN THE ELBE ESTUARY WITH HIGH SPATIAL RESOLUTION , International Estuarine Biogeochemistry Symposium, Vigo, Spain, 4 June 2019 - 5 June 2019 .


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