MEASURING METHOD FOR WATER QUALITY OF MARINE SURFACE LAYER, WATER QUALITY MEASURING DEVICE, AND WATER QUALITY MEASURING PROGRAM

摘要

PPROBLEM TO BE SOLVED: To enable the measurement of the salinity and water temperature of a marine surface layer using data obtained by a marine radar. PSOLUTION: A variation S' between the effect of waves in a standard time period on received power RSISB0/SB' and the effect of waves in a measurement time period on received power RSISBm/SB' is estimated. A variation s' between the effect of waves in the standard time period on the received power RSISB0/SB' and the effect of waves in an electrical conductivity fluctuation time period on received power is estimated. A regression function f() of the relationship between received power, which is obtained by subtracting the variation s' from the received power in the electrical conductivity fluctuation time period, and the electrical conductivity in the electrical conductivity fluctuation time period is estimated. A value of the electrical conductivity SBc/SBin the measurement time period is estimated using RSISB0/SB'-RSISBm/SB'S'+äf(SB0/SB)-f(SBc/SB)} (where SB0/SB: the electrical conductivity in the standard time period), and practical salinity is calculated. PCOPYRIGHT: (C)2011,JPO&INPIT