Ocean Modeling Discussion

thanks

hi,i have two problems,could you help me? 1.I have the bathymetry data ,but i havn't the coastline data of them,is the coastline data requisites for the Seagrid? 2.The bathymetry data I have is based on relative coordinate ,but the coastline data downloaded from http://rimmer.ngdc.noaa.gov/mgg/coast ...