8.25. (10/16) Tides; back barrier, shallow shelf, tidal ranges Flashcards
What is flaser bedding?
mostly sand
What is lenticular bedding?
mostly mud
What is wavy bedding?
50-50 mix of sand and mud
What kind of bedding can we find in the saltmarsh bay?
wavy, lenticular, and flaser
What is the depth of water at the shallow shelf?
30m
What are sandwaves?
a bedform that has big sand dunes caused by strong tides
What is a reactivation surface?
the line that can be found in the sand that occurs because tidal flows are not equal
*one part of tide is stronger than the other
Why do we study the shallow-shelf bedding?
- hydrocarbons can be found if preserved properly
- accessible places to store carbon
Where can you find the ebb delta?
Where can you find the flood delta?
Why does the bay of fundy have large tides?
trumpet shape of bay makes a natural resonator causing the waves to bounce around and amplify
*frequency is matched by ___ causing the wavelength to amplify
What is the equation to find tidal resonator?
wavelength equals 0.25 * period of tide wave * the sqrt of gravity * depth
*λ=0.25τ√gh
