Abstract
The article provides a data on 160 samples of bottom sediments obtained from 48 stations during 60th cruise of R/V Akademik Oparin in the East Siberian Sea in Autumn 2020 (26 September - 11 November). It contains mean diameter of the particles, sorting coefficient, standard deviation, skewness, and kurtosis, values of percentiles (p5, p10, p16, p25, p50, p75, p84, p90, p95), lithology and mass percentage of >2 mm, 1-2 mm, 0.5-1 mm, 250-500 µm, 125-250 µm, 63-125 µm, 31-63 µm, 10-31 µm, 2-10 µm, and <2 µm fractions. The bottom sediments have been sampled in Chaun Bay of the East Siberian Sea from 9 to 21 October 2020 with Ekman (0.25 m(2)) and Van Veen (0.05 m(2)) samplers. The grain size data was obtained from laser diffraction method using a SHIMADZU SALD 2300 particle analyser. The data provides an overview on lithology and grain size properties of bottom sediments that will be useful to understand risks for climate changes in the Arctic. The data will help the researchers who work on the Arctic to assess a relationship between grain size properties of the bottom sediments and it sorption potential. A principal component analysis (PCA) can be performed to identify key parameters of the bottom sediments in assessment of sedimentation rates and it changes in the Arctic. Additionally, the data can be used in mapping a spatial distribution of above mentioned parameters for better understanding sedimentation rate changes in the East Siberian Sea and adjacent seas as well.