:
-
.
- ( ) .
- .
- (New moon & Full moon ) (Spring Tide ) .
Apogee
Apogee (1) .
Perigee
Perigee (2).
-The Anomalistic Period :
Perigee 554727 (Mean Solar Day ) .
-Aphelion : .
-Perihelion : .
- :
- (New Moon ) ( ) 1800 (First Quarter ) .
(Full Moon ) .
- 22 (Last Quarter ) 0600 .
- SPRING RANG :
(New Moon ) (Spring Rang ) 14 (Full Moon ) .
- NEEP RANG :
- (Spring Rang ) (First Quarter ) High Water Neep Low Water Neep (Neep Rang ) .
- (M.T.L) Mean Tidal Level .
- (C.D ) Chart Datum .
- (M.H.W.S) .
-L.A.T 18 . 30 C.D .
:
- tide pole .
- tide gauge.
- sea bed tide gauge.
real time tide gauge.
- ( REAL TIME KENIMATIK GLOBAL POSITIONING SYSTEM) .
:
- .
.
- .
- .
.
- .
- .
- .
- BENCH MARK .
- .
- .
:
- ( chart datum) .
- ( chart depth ) .
- ( lowest astronomical tide) .
- :
.
:
(harmonic constituents) HARMONIC CONSTANTS :
0 .
a .
sa .
m .
f .
1 diurnal .
2 semidiurnal.
3-12 .
M1 .
K1/O1 .
S2
.
Z0 .
g
.