Figure 4
From: Subsea permafrost organic carbon stocks are large and of dominantly low reactivity
Organic carbon degradation illustrated on a south-north transect in the western Laptev Sea. Sediment temperature (a), liquid water content in the pore space (b), and organic carbon content (c) stored along a south-north transect (from left to right) in the western Laptev Sea (along 117° E) at pre-industrial time. Panel (c) shows sediment organic carbon (OC in wt%) for decomposition scaled to liquid water content. OM was only accumulated within the last 450 kyr with median terrestrial and marine sediment OC burial rates and decomposition was scaled with reactivity parameters of \(a={50}\,\text{yr}\) and \(\nu = 0.15\) for marine and \(a={0.25}\,\text{yr}\) and \(\nu = 0.003\) for terrestrial deposits. The location of this transect in the western Laptev Sea is shown in Figs. 2, 3. Note the different depth scales between panels (a)/(b) and panel (c).
