Fig. 7

Relationships of total As and δ¹⁸ O and dissolved chemical components in IW sensitive to changing redox condition a: chlorinity and δ¹⁸O; b: chrolinity and Br^- concentration; c: Br^- and PO₄^3- concentrations; d: NH₄⁺ and PO₄^3- e: PO₄^3- and Fe; f: PO₄^3- and As; g: pH and As; Fe and As. SW, MH, and BG are the seawater, dissolved water from methane hydrate, and diagenetically altered interstitial water, respectively (a referred Toki et al. (2017) was modified). Data except As concentrations were from Moore et al. (2013) and Toki et al. (2017)