Fig. 3: Summary results of black carbon (BC) content, total organic carbon (TOC) content, and BC/TOC ratio in surface sediments from six trench regions.
From: The hadal zone is an important and heterogeneous sink of black carbon in the ocean
a BC content. b TOC content. c BC/TOC ratio. AT Atacama Trench, BT Bougainville Trench, KT Kermadec Trench, MST Mussau Trench, MT Mariana Trench, NBT New Britain Trench. The dash lines denote average values of the parameters in each trench.
