Chapter11 - The Tides Tide-Generating Forces Equilibrium...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
1 The Tides Tide-Generating Forces Equilibrium Tidal Theory Dynamic Tidal Theory Analysis of Tidal Signal tide - rhythmic oscillation of the ocean surface due to gravitational & centrifugal forces between the Earth, Moon and Sun. tidal cycle – one low tide and one high tide consecutively diurnal tide - one low tide, one high tide a day semidiurnal tide – two tidal cycles daily; high and low tide levels are approximately equal semidiurnal mixed tide - same as semidiurnal except high and low tide levels vary diurnal tide semidiurnal tide semidiurnal mixed tide MTL = Mean Tide Level MHW = Mean High Water MLW = Mean Low Water MHHW = Mean Higher High Water MLLW = Mean Lower Low Water tidal range – difference between MHW and MLW For navigation, the reference level is MLW or MLLW Flood Tide: tide wave is propagating onshore water level is rising Ebb Tide: tide is moving out to sea water level is dropping Slack tide: period when tide wave is reversing low current velocity
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 Study of Tides
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 5

Chapter11 - The Tides Tide-Generating Forces Equilibrium...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online