quiz 4 Flashcards
study of sediments
sedimentology
involves looking at ancient earthquakes
paleoseismicity
**zone of turbulent water
:whirlpool
:occur in narrow bays
maelstrom
what causes tides
1) earth rotation: centrifugal force
2) gravitational pull of moon and sun
2 tidal bulges
1) moon pull on earth’s ocean (gravity bulge)
2) inertia of earth (inertia bulge)
highest high tides
lowest low tides
spring tides
lowest high tides
highest low tides
neap tides
:occur when earth-moon-sun line up
:constructive interference
spring tides
:occur during first quarter moon or third quarter moon
:destructive interference
neap tides
3 types of tidal patterns
1) diurnal tide pattern
2) semiurnal tide pattern
3) mixed tides
have 1 high and low tide Q24hrs
diurnal tide patterns
have 2 equal high and low tides Q24hrs
semiurnal tide pattern
have 2 unequal high and low tides Q24hr
mixed tides
:have no tides –> canceling of tides
:norther hemisphere
–> currents clockwise
–> tides counterclockwise
Amphidromic points
area of extreme tides
Macrotidal Regime