1. Moon moves ~ 4 cm/year away from the earth
Moon moves ~ 4 cm/year away from the earth. 1 billion years ago it was 40,000 km closer to the earth
Earth’s slows it rotation by 1.5 ms/century. So in 100,000 years we lose 1.5 seconds
100 million years 1500 seconds (1/2 hours), 1 billion years ago 15,000 seconds
(4-5 hours)

2. Moon’s distance at: Perigee ~ 362,000 km Apogee ~405,400 km
Tables from Stewart
Moon’s distance at:
Perigee ~ 362,000 km
Apogee ~405,400 km
F=n1f1+n2f2+n3f3+n4f4+n5f5+n6f6

4. Spectrum of sea-level at the BatteryK1 N2 S2 O1

6. Dissipation is the time
Rate of change of energy
Thus units m2/s3
And proportional to
U3/H (Turbulent shear production)
Interesting to note that tides are proportional to distance to moon cubed– and thus tidal dissipation is proportional to distance to the moon to the ninth power!
As the moon moves away– and content move– tidal dissipation may be very sensitive. Could drive climate variabitliy.

7. ~3/4 in shallow shelf– still nearly 1TW in deep ocean!
20 GW off Hawaii

9. M2

11. O1 TIde

12. Time of High Water Jan 27th, 2005
10:51
12:05
12:17
11:02
12:07
8:37
12:11
9:15
9:15
Moon Rise
7:11 AM
8:48
8:37
8:42

13. C=7 m/s

18. Time of High Water Jan 27th, 2005
10:51
12:05
12:17
11:02
12:07
8:37
12:11
9:15
9:15
Moon Rise
7:11 AM
8:48
8:37
8:42

21. Semi-diurnal Tides
In North Sea.
Classic Kelvin Wave
Problem (complicated by
Corner!)
Blue– Tidal Range
Red Time of High water