A quantitative assessment of methane cycling in Hikurangi Margin sediments (New Zealand) using geophysical imaging and biogeochemical modeling

• Published in: Geochemistry, Geophysics, Geosystems
• Main Authors: Luo, Min, Dale, Andrew W., Haffert, Laura, Haeckel, Matthias, Koch, Stephanie, Crutchley, Gareth, De Stigter, Henko, Chen, Duofu, Greinert, Jens
• Format: Article in Journal/Newspaper
• Language: English
• Published: AGU (American Geophysical Union) 2016
• Subjects: New Zealand; Takahe; The Chimney; Methane hydrate
• Online Access: https://oceanrep.geomar.de/id/eprint/34636/; https://oceanrep.geomar.de/id/eprint/34636/7/Luo.pdf; https://doi.org/10.1002/2016GC006643

Takahe seep, located on the Opouawe Bank, Hikurangi Margin, is characterized by a well-defined subsurface seismic chimney structure ca. 80,500 m2 in area. Sub-seafloor geophysical data based on acoustic anomaly layers indicated the presence of gas hydrate and free gas layers within the chimney struc...