APPENDIX I 



SYMBOLS 



H = elevation of primary tide above mean level at time t 



Hq = half the amplitude of the primary tide curve 



H' = elevation of tide in gage well at any time t 



Hq ' = half the amplitude of tide curve in well 



h = effective head at any time t 



hp = half the amplitude of effective head 



t -I time 



t' = or (t +£ ) 



£ = lead of effective head in seconds 



9 = lag of tide curve in gage wall in seconds 



T = tidal period ' 



n = ratio of inertia to viscous head 



p = percentage of cycle during which ratio of inertia to viscous heads 



is less than n 

 oc = 2 TT /t 



a = area of connecting line 



A = area of tide-gage well 



R = radius of connecting pipe 



D 3 diameter of connecting line 



L = length of connecting line 



G = characteristic of gage well and connecting line for laminar flow 



N = characteristic of gage well and connecting line for "turbulent" flow, 



Gq = coefficient of contraction at discharge from connecting line 



k = coefficient of loss at bends, contractions, inlet, etc. 



f = friction factor for connecting line 



M =■ overall resistance coefficient for turbulent flow. (£q. 12) 



37 



