Hadal water biogeochemistry over the Izu–Ogasawara Trench observed with a full-depth CTD-CMS
作者: Kawagucci ShinsukeMakabe AkikoKodama TaketoshiMatsui YoheiYoshikawa ChisatoOno EtsuroWakita MasahideNunoura TakuroUchida HiroshiYokokawa Taichi
刊名: Ocean Science, 2018, Vol.14 (4), pp.575-588
来源数据库: Copernicus Journal
DOI: 10.5194/os-14-575-2018
原始语种摘要: Full-depth profiles of hydrographic and geochemical properties at the Izu–Ogasawara Trench were observed for the first time using a CTD-CMS (conductivity–temperature–depth profiler with carousel multiple sampling) system. Additionally, comparative samplings were done at the northern Mariana Trench using the same methods. A well-mixed hydrographic structure below 7000 m was observed within the Izu–Ogasawara Trench. Seawater samples collected from this well-mixed hadal layer exhibited constant concentrations of nitrate, phosphate, silicate, and nitrous oxide as well as constant nitrogen and oxygen isotopic compositions of nitrate and nitrous oxide. These results agree well with previous observations of the Izu–Ogasawara hadal waters and deep-sea water surrounding the Izu–Ogasawara Trench....
全文获取路径: Copernicus Publications 

  • observed 观察到的
  • constant 常数
  • water 
  • nitrogen 
  • concentrations 浓聚物
  • hadal 超深渊
  • oxygen 
  • nitrate 硝酸盐
  • mixed 混合的
  • methane 甲烷