<Tr> <Td> <P> </P> </Td> <Td> <P> </P> </Td> <Td> <P> </P> </Td> </Tr> <Tr> <Td> <P> </P> </Td> </Tr> <P> (L) </P> <P> The above perturbation equations can be solved sequentially, i.e. starting with first order, thereafter continuing with the second order, third order, etc . </P>

Wave steepness is a function of wave height divided by