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# Water sound speed calculator 1.0

Date Added: April 03, 2013  |  Visits: 203

Calculate the sound speed of water for any given temperature, pressure, and salinity. OUTPUT: sound speed in m/sINPUTS:This function allows any or all inputs to be scalar or vectors. However, dimensions of all vector inputs must agree.T_degrees_C is temperature in [dlT-C]P_kPa is absolute pressure [kPa]S_ppt is salinity in ppt; most often close enough to psu for practical purposes. For freshwater use S_ppt = 0 or leave blankIf you have data from a CTD cast, you might have values for temperature, pressure, and salinity in the following format. (These example values are entirely hypothetical):T_profile = [22 22 21 19 18];P_profile = [101 150 199 240 300];S_profile = [35.5 35 34.5 34 34.5];Or you might have constant values for one or all of the input parameters:T_const = 22;P_const = 110;S_const = 33;ANY OF THE INPUTS FOLLOWING WILL WORK:c_water(T_const,P_const,S_const)c_water(T_const,P_const)c_water(T_const)c_water()c_waterc_water(T_profile)c_water(T_profile,P_profile)c_water(T_profile,P_profile,S_profile)c_water(T_profile,P_profile,S_const)c_water(T_profile,P_const,S_profile)c_water(T_profile,P_const,S_const)c_water(T_const,P_profile,S_profile)c_water(T_const,P_const,S_profile)c_water(T_const,P_profile,S_const)c_water(T_const,P_profile)c_water(T_profile,P_const)GRAPHICAL EXAMPLEd = 0:5000; % for depth of 0 to 5 kilometersp = 101.325+1025*9.81*d/1000; % pressure equivalent in kPat = [20:-10/500:10 10*ones(1,4500)]; % a very simplified thermocline modelc = c_water(t,p,32);plot(c,-d)ylabel('depth (m)')xlabel('sound speed (m/s)')

 Requirements: No special requirements Platforms: Matlab Keyword: Const,  Water,  Watert Const,  Watert Constp Const,  Watert Constp Consts Const,  Watert Profile,  Watert Profilep Profile Users rating: 0/10

 License: Shareware Size: 10 KB
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