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Anomalous current recorded at lower low water off the Changjiang River mouth, China.
- Source :
- Geo-Marine Letters; Nov2004, Vol. 24 Issue 4, p252-258, 7p
- Publication Year :
- 2004
-
Abstract
- A hydrographic-sedimentological investigation was conducted in May 2001, aimed at assessing dynamic sedimentation patterns near and off the Changjiang River mouth, East China Sea. Current speed/direction, suspended sediment concentration (SSC), and turbidity were measured at eight nearshore and offshore sites, spanning a distance of ca. 150 km. The results identified a high-speed current ranging from 0.9 to 1.6 m/s at lower low water in the front of the turbidity maximum zone. This anomalous current, lasting about 4 h, was the fastest recorded over two semi-diurnal tidal cycles. Simultaneous measurements showed a high SSC (0.5 g/l) and high turbidity (>230 ppm) near the seafloor. This phenomenon would help explain periodic enhancement of sediment resuspension in the area, and an associated southward transport route from the Changjiang River mouth. [ABSTRACT FROM AUTHOR]
- Subjects :
- SEDIMENTOLOGY
SEDIMENTATION & deposition
TURBIDITY
TIDES
RIVERS
Subjects
Details
- Language :
- English
- ISSN :
- 02760460
- Volume :
- 24
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- Geo-Marine Letters
- Publication Type :
- Academic Journal
- Accession number :
- 14854062
- Full Text :
- https://doi.org/10.1007/s00367-004-0182-1