The distribution and composition of suspended matters and their influencing factors in the central-southern area of Okinawa Trough and its adjacent shelf sea

GUO Zhi-gang; YANG Zuo-sheng; LEI Kun; GAO Lan; QU Yan-hui

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GUO Zhi-gang, YANG Zuo-sheng, LEI Kun, GAO Lan, QU Yan-hui. The distribution and composition of suspended matters and their influencing factors in the central-southern area of Okinawa Trough and its adjacent shelf sea[J]. Haiyang Xuebao, 2001, 23(1): 66-72.

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The distribution and composition of suspended matters and their influencing factors in the central-southern area of Okinawa Trough and its adjacent shelf sea

College of Marine Geosciences, University of Qingdao, Qingdao266003, China

Received Date: 1998-08-06
Rev Recd Date: 2000-01-30

Abstract

Abstract

In early summer,concentration of total suspended matter(TSM) in the surface layer water in the middle area of the central-southern Okinawa Trough sea area is a relative higher than that in the north and south.While in the middle and bottom layers water,the concentration of TSM in the northeast of the central-southern Okinawa Trough is higher than that in the southwest.The sectional distribution of TSM from the shelf to the Okinawa Trough can be divided into three provinces,namely,the high TSM zone mainly corresponding to the shelf,the lowest TSM zone mainly corresponding to the continental slope,and the low TSM zone corresponding to the Okinawa Trough.The suspended matter chiefly consists of rock and mineral debris dominating in the middle-bottom layers water in the shelf,skeletal debris dominating in the whole water column in the Okinawa Trough and the upper water layer in the shelf,and aggregation distributing in the whole study area.The main factors controlling the distribution and composition of suspended matter are the obstruction of the Kuroshio Current which prevents the transport of terrigenous debris from shelf to the Okinawa Trough,marine organism production,and topographic and geographic environment.
- Okinawa Trough,
- suspended matter:distribution and composition,
- influencing factors,

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References(15)

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