Chapter 12: Coastal Systems Flashcards Preview

Earth 122 > Chapter 12: Coastal Systems > Flashcards

Flashcards in Chapter 12: Coastal Systems Deck (37)
Loading flashcards...
1

What fish has had the most impact on human civilization?

Atlantic Cod

2

Groundfish

Fish that live or feed along the bottom of the body of water they inhabit

3

Why is temperature more stable in water than land?

-water has a high heat capacity
-takes more time to heat water than air

4

Thermocline

The change in temperature with increasing depth(temperature decreases rapidly as you go lower)

5

Halocline

The increase in salinity of a water body with increasing depth

6

Deep Zone

The area of water below pycnocline. Unaffected by winds, storms, sunlight, and temperature.

7

What is upwelling?

Upwelling is the vertical flow of cold, deep water towards the surface

8

Downwelling

The sinking of oxygen rich water where surface current converge

9

What are El Nino conditions?

Change in air pressure by air rising in the western Pacific and falling in the eastern Pacific.
-causes the equatorial trade winds to weaken
-causes rainstorms/floods in typically dry areas, vice versa

10

What would the weather be like in Canada in LA Nina conditions?

Abnormally cool and wet

11

What is bathymetry?

The measurement of ocean depths

12

What are continental shelves?

Gently sloping areas that underlie shallow waters bordering continents \

13

What is a continental slope?

A continental slope connects a continental shelf to the ocean floor

14

What is an abyssal plain?

The flat bottom of the deep ocean

15

In what zone does most of the oceans primary productivity occur?

PHOTIC Zone.. "top zone"

16

What are habitats/ecosystems at the ocean floor called?

Benthic

17

What is the aphotic zone?

The area of water below the depths where light can reach

18

What are coral reefs?

A mass of calcium carbonate made up of the skeletons of corals, located in shallow sub/tropical waters

19

What are intertidal(littoral) ecosytems?

Ecosystems where the ocean meets the land

20

What are tides

The periodic rising and falling of the oceans height due to the gravitational pull of the sun and moon

21

What are mangroves?

trees with unique roots that curve upwards(for oxygen)

22

How are mangroves threatened?

By development and shrimp farming, we are only protecting !% of mangroves

23

What are estuaries?

Estuaries are water bodies where rivers flow into the ocean

24

What species typically inhabit estuaries?

Shorebirds and shellfish

25

What is methane hydrate?

An ice like solid consisting of methane, a possible energy source(not enough research conducted)

26

What causes ocean acidification?

The uptake of atmospheric carbon dioxide

27

What are algal blooms?

When nutrients increase populations of algae in water, algae produce powerful toxins

28

What is a red tide?

When algal blooms produce red pigments and discolor water
-causes illnessand death to wildlife and humans

29

What percentage of the fish population are overexploited/heading to extinction?

25%

30

What are some fish species we have hunted to extinction?

Steller sea cow, atlantic gray whale, caribbean monk seal