Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6784571 | Water Science and Engineering | 2017 | 12 Pages |
Abstract
Implementation of the water-sediment regulation (WSR) scheme, mainly focused on solving the sedimentation problems of reservoirs and the lower reaches of the Yellow River, has inevitably influenced the sediment distribution and coastal morphology of the Yellow River Estuary. Using coastline delineation and suspended sediment concentration (SSC) retrieval methods, this study investigated water and sediment changes, identified detailed inter-annual and intra-annual variations of the coastline and SSC in the normal period (NP: 1986-2001, before and after the flood season) and WSR period (WSRP: 2002-2013, before and after WSR). The results indicate that (1) the sedimentation in the low reaches of the Yellow River turned into erosion from 2002 onward; (2) the inter-annual coastline changes could be divided into an accretion stage (1986-1996), a slow erosion stage (1996-2002), and a slow accretion stage (2002-2013); (3) an intra-annual coastline extension occurred in the river mouth in most years of the WSRP; and (4) the mean intra-annual accretion area was 0.789Â km2 in the NP and 4.73Â km2 in the WSRP, and the mean SSC increased from 238Â mg/L to 293Â mg/L in the NP and from 192Â mg/L to 264Â mg/L in the WSRP.
Keywords
Related Topics
Physical Sciences and Engineering
Engineering
Civil and Structural Engineering
Authors
Hai-bo Yang, En-chong Li, Yong Zhao, Qiu-hua Liang,