Week 12 Flashcards
____ circulation results in a global-scale conveyor belt that circulates ____ throughout the entire ocean system.
Thermohaline circulation results in a global-scale conveyor belt that circulates water throughout the entire ocean system.
Predictable, daily changes in ocean height. Generated in response to gravitational forces, interactions between the Earth and the moon and sun.
Tides
We have ___ tidal bulges and high tide ___ a day.
We have two tidal bulges and high tide twice a day.
Tidal Reach
The vertical distance between high tide and low tide.
What do groins do?
They keep sand in place, as longshore drift moves sand along a beach.
Beaches
Passive Margins
Rocky, steep, typically at an offshore subduction zone.
Active Margins
Salinity in groundwater increases with
depth.
Porosity
Groundwater resides in pore spaces.
Primary porosity
Open space within the rock that originally formed with the material.
Secondary Porosity
New pore space created after the rock first formed.
Aquifier
High porosity, high permeability rock that transmits water easily.
Water table
Top of a groundwater reservoir, moves up and down based on climate, a subdued replica of surface topography.
If groundwater is extracted faster than it can be replaced it creates a
cone depression.
