ESTIMATION OF SEA LEVEL RISE USING THE TIDE GAUGE RECORDS IN PORT AREAS AND THEIR CHARACTERISTICS

Abstract

 In this paper, the estimation method of mean sea level (i.e. MSL) from long-term records of tide gauge is shown by eliminating the influence of tide, atmospheric pressure and ground elevation. Then, for the discussion of sea level rise, time series of MSL are estimated at ten tidal stations in port area around Japan. At three ports in Japan sea side, MSL tends to increase clearly. At four ports in Pacific side, MSL tends to increase, but annual rates of elevation vary port by port. Each elevation rate of MSL estimated from latest records (during 2004-2013) is larger than that from whole obtained records respectively.