Recent sediment accumulation rates are 18-230 mg cm\ yr\ (0.02-0.2 cm yr\) based on excess Pb activity profiles in the southwestern part of the East Sea (Sea of Japan). Assuming no mixing beneath surface mixed layers, Pb-derived sediment accumulation rates are 18-32 mg cm\ yr\ in the northern part of the Yamato Ridge and the Ulleung Basin, 29-136 mg cm\ yr\ in the Korea Plateau, and 230 mg cm\ yr\ in the southern shelf. These values generally agree with long-term sedimentation rates estimated from dated ash layers.

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