The Yangtze River Delta region is characterized by high density of population and rapidly developing economy. There are low lying coastal plain and deltaic plai
The effective precipitation and the frame of atmospheric circulation in the past three key periods, i.e.30 ka BP, 18 ka BP and 6 ka BP, have been analyzed on th
A Wavelet-Galerkin method is proposed to solve the singular perturbation problem with boundary layers numerically. Because there are boundary layers in the solu