Fig. 2. Water depth and potential temperature dependence of isopycnals (Feistel, 2003; Jackett et al., 2006). The black solidus line shows the depth-dependent freezing point of fresh water (Feistel, 2003; Jackett et al., 2006), the red solidus line indicates the linearized form of the freezing point equation adjusted for Lake Vostok. The dashed line connects the isopycnal’s vertices and indicates the line of maximum density (LoMD). The dotted gray line indicates the former LoMD according to Haidvogel and Beckmann (1999) as published in Thoma et al. (2008b). Coloured dots show the captured space of potential temperatures and equivalent water depth for Lake Vostok, Lake Concordia, and Lake Ellsworth, respectively. Dots within the grey shaded area above the solidus line represent supercooled water masses with freezing capability.
...read more