Fig. 5: Properties of sediments collected from the 2020 deployment, the 2021 deployment and the substrate at the mooring site S2.
From: Two distinct types of turbidity currents observed in the Manila Trench, South China Sea
a The gray-scale values of 3–7 cm of the sediment at 15 MAB are indicated by the blue line. b The gray scale maps are computed-tomography (CT) images of sediment trapped from E1 to E2. The coarser the grain size, the lighter is the color of the CT images. The blue circled numbers denote the positions of cross-section photos. c Median and mean grain size and sorting of the collected sediment. d The content of clay, silt and sand, (e) proportion of the clay minerals, and (f) the content of δ13C relative to PDB. In the legends, sediment properties from layers #7-#8’ denotes the finer sediment samples of layers #7-#8 (hereafter ‘_F’). Layers #7-#8’ located in the oblique interface between the deposits from the turbidity currents E1 and E2, containing the sediment from E1 to E2. The ‘Substrate’ in legends indicates the substrate sediment sampled in 2020 at the site X02 (see the location in Fig. 1b). The ‘Trap-2020’ and ‘Trap-73’ indicate the sediment trapped during 2019–2020 and at 73 MAB during 2020–2021, respectively.
