|
GLY150:
INTRODUCTION TO OCEANOGRAPHY
University of North Carolina Wilmington
|
 Back
|
Lecture
Outline
Tides
I.
Tidal Theory
- Law
of gravitation
- Equilibrium
theory
- Earth,
Moon, Sun positions
- Uniformly
deep ocean
- No
friction between water and seafloor
- No Coriolis Effect
- Dynamical
theory
- Effects of
landmasses
- Geometry
of ocean basins
- Friction
between ocean water and seafloor
- Coriolis
Effect
II.
Earth-Moon System
- Gravitational
forces
- Centripetal
forces
III.
Earth-Moon-Sun System
- Lunar day
- Synodic month
- Spring
tides
- full and
new moon
- occur when
earth, moon and sun are aligned
- Neap
tides
- first and
third quarter moon
- occur when
moon and sun are at right angles
- Declinational
tides
- Moon 28.5°
declination relative to Earth's equatorial plane
- Earth's 23.5° tilt
relative to the Ecliptic
- Effects
of Distance
IV.
Dynamic effects
- Tides
are shallow water waves
- Interact
with seafloor
- Velocity
determined by ocean depth
- Tidal cells /Amphidromic systems
- Free
Standing waves due to continents
- Coriolis
effect causes rotation
- Amphidromic
point
- Cotidal
lines
- Corange lines
V. Types
of Tides
- Diurnal
- Semidiurnal
- Mixed
VI. Tides
as a Source of Power
- La
Rance tidal power plant
- Bay
of Fundy
Some
helpful links relevant to these lectures:
Earth and Moon Viewer
NOAA tide info
Top of Page
