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The shelfbreak of the East China Sea lies in an area with a marked change in gradient between the continental shelf and the slope (west wall of Okinawa Trough), depth ranging from 132 to 162m with an average of about 147 m, and the width ranging from 4 to 18 km. The types of the shelfbreak differ markedly from the north to the south, having an abrupt break in the south and a gradual break in the middle and the north. Without permanent deposition of fine-grained material formed at the shelfbreak zone, it serves only as a temporary resting place for terrigenous sediments moving toward the Okinawa Trough through submarine canyons as important transport conduits. 相似文献
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