Molecular hydrogen and carbon monoxide in seawater in an area adjacent to Kuroshio and Honshu Island in Japan

作者：Kawagucci Shinsuke^*; Narita Taku; Obata Hajime; Ogawa Hiroshi; Gamo Toshitaka

来源：Marine Chemistry, 2014, 164: 75-83.

DOI：10.1016/j.marchem.2014.06.006

• Molecular hydrogen
• Carbon monoxide
• Nitrogen fixation

Marine H-2 and CO cycles in the sea adjacent to Honshu Island in Japan were investigated using vertical and diurnal seawater sampling. The vertical profiles of the H-2 concentration differed among three stations that were located near the Kuroshio Current, off Suruga Bay, and in the center of Sagami Bay. Surface H-2 enrichment was found near the Kuroshio Current, whereas subsurface H-2 maxima within the pycnocline appeared at the Kuroshio and Suruga Bay stations. Biological N-2 fixation likely accounts for the surface and subsurface H-2 enrichment while the fermentative H-2 production remains as the other possible process. In addition, twenty-four-hour observation at the Sagami Bay station revealed nearly constant H-2 levels through depth and time, whereas a noon-high surface-high pattern was observed in the CO concentrations.

• 出版日期2014-8-20