An application of a nesting procedure to a highly-resolved current simulation in a mangrove area

摘要

A riverine-type mangrove (R-type mangal), which is observed in most mangrove forests in Japan, is composed of meandering creeks and fringing mangrove swamps with a densely vegetated mangrove trees and roots. The ratio of the swamp area to the creek area appears to be typically of order 2-10 and then the horizontal scale of the swamp is quite different with that of the creek. To accurately predict water environments and sedimentary processes in a R-type mangal, it is desirable to conduct current simulations in which the morphological feature of R-type mangals as mentioned above are taken into consideration. For this purpose, it may be expected to employ a nesting procedure, in which the computational results in a larger-scale domain are successively reflected on a smaller-scale computation. From these reasons, in the present study, we have attempted to apply a nesting procedure to the highly-resolved current simulation in Fukido River estuary, one of typical R-type mangals, located in the north-west part in Ishigaki Island, Okinawa, Japan.