The marsh surface supplied water quantity accounts for 33% of the ebb water quantity in the creek,resulting in 20% of the ebb suspended sediment discharge in the creek during the ebb. This is a basic influence on the time asymmetry.

• 滩面归槽水占潮沟落潮输水量的33%25；由此造成的悬沙输运量占潮沟落潮悬沙输运量的20%25；这是导致潮沟涨落潮输水输沙不对称的主要因素.