What Factors Affect The Carbonate Compensation Depth? - Fixanswer

The supply of tests raining down to the ocean floor depends on the productivity of surface waters. In areas of high productivity, the greater rate of supply lowers the CCD and carbonate particles occur in sediments at depths below the average ocean CCD.

Nutrient availability

, thus, is one important control on the CCD.

What affects compensation depth?

Once sunlight penetrates the water

, the compensation depth varies with ocean conditions. For example, with an increase in production there is an increase in phytoplankton populations, as well as the numbers of zooplankton that eat the phytoplankton.

What is calcium carbonate compensation depth?

calcite compensation depth (CCD), in oceanography,

the depth at which the rate of carbonate accumulation equals the rate of carbonate dissolution

. The input of carbonate to the ocean is through rivers and deep-sea hydrothermal vents.

Why is the carbonate compensation depth deeper in the Atlantic?

In the North Atlantic and the eastern South Atlantic, the CCD occurs deeper than 5,000 m. Close to continental margins,

the CCD tends to shoal due to higher biological productivity and hence respiration of organic matter in sediments, which releases metabolic CO
₂
, in turn causing the dissolution of CaCO
₃

.

What is the carbonate compensation depth quizlet?

What is the Carbonate Compensation Depth (CCD)? Calcium Carbonate Compensation Depth (CCD)

the depth at which the rate of accumulation of calcareous sediments equals the rate of dissolution

. Be able to describe why calcareous oozes (CaCO3) are not found in the deep ocean bottom.

How deep is the carbonate compensation depth?

In today’s oceans, the CCD is

between 4 and 5 kilometers

deep. It is deeper in places where new water from the surface can flush away the CO
₂
-rich deep water, and shallower where lots of dead plankton build up the CO
₂
.

What affects the oxygen compensation depth?

The compensation depth between photosynthesis and respiration of phytoplankton in the ocean must be dependent on some factors:

the illumination at the surface, the transparency of the water, the biological character of the plankton present, and the temperature

.

What is the calcium carbonate compensation depth which mineral composition does it affect and why?

The calcite compensation depth (CCD) is

the depth in the oceans where the rate of calcium carbonate material forming and sinking is equal with the rate the material is dissolving

. Below the CCD no calcium carbonate is preserved—generally there is no CaCO
₃
beneath about 15,000 feet (4500 meters) (Figure 6.81).

Why do siliceous deposits dominate sediments below the calcium carbonate compensation depth?

A point at which calcium carbonate dissolves just as fast as it accumulates from above. Why do siliceous deposits dominate sediments below the calcium carbonate compensation depth?

Due to the slow deep-sea dissolution of siliceous remains and high diatom productivity

.

What controls dissolution of calcium carbonate?

In the CaCO3/H2O/CO2 system, in the presence of calcite, the

CO2 pressure

is controlling the carbonate alkalinity, i.e. the pH and total aqueous calcium concentration.

What is the difference between critical depth and compensation depth?

The Critical depth is an ecological concept applied to the whole community of plants and related to vertical mixing of the water: Page 4 4 The Compensation depth is a physiological concept: The depth at which the rate of photosynthesis for an individual plant equals the rate of respiration by that plant.

What causes carbonate to precipitate?

Because of its

low solubility in water

, calcium carbonate readily precipitates during evaporation. The degree of solubility of calcium carbonate falls as the water temperature rises. The temperature of water in surface microirrigation systems can increase as the water flows down the laterals.

Which of the oceans have the deepest CCD and why?

CCD is found deepest in the

North Atlantic Ocean

(50°N) at about 5,000 m moving upwards continuously in the water column to 3,000 m in the Atlantic sector of the Southern Ocean (60°S) and, in turn, CCD is found deepest in the Pacific sector of the Southern Ocean (60°S) at about 4,500 m moving upwards to 3,000 m in the …

What is difference between lysocline and CCD?

While the lysocline is the upper bound of this transition zone of calcite saturation, the CCD is the lower bound of this zone

.

What is the significance of the carbonate compensation depth CCD )? How might ocean acidification affect the CCD?

What is the significance of the carbonate compensation depth (CCD)? how might ocean acidification affect the CCD? The depth provided by the CCD gives us the threshold in which calcium carbonate is dissolved.

Acidification could cause the CCD to rise and slower coral reef growth and production of calcium carbonate

.

Which of the following would not be found below the calcium carbonate compensation depth?

Calcareous ooze

would not be found below the CCD. Sediments derived from the remains of the hard parts of once-living organisms are called __________ sediments. Two common types of chemical compounds found in biogenous sediments are __________ and __________.

Which of the following explains why calcareous ooze is sometimes found below the calcite compensation depth CCD )?

Which of the following explains why calcareous ooze is sometimes found below the calcite compensation depth (CCD)?

Calcareous ooze can be deposited above the CCD and covered with other sediment, which protects it as the tectonic plate, and the ooze moves into deeper water

.

What occurs below the calcium carbonate compensation depth group of answer choices?

the depth at which the rate of accumulation of calcareous sediments equals the rate of dissolution of those sediments. Below this depth,

sediment contains little or no calcium carbonate

.

What is oxygen compensation depth?

The depth in a body of water at which illuminance has diminished to the extent that oxygen production through photosynthesis and oxygen consumption through respiration by plants are equal

. It is the lower boundary of the euphotic zone.

How does turbidity affect compensation depth?

The relationship between compensation depth and turbidity is reflected in a

sharp decrease in compensation depth

, and potential lake productivity, between turbidities of 2 and 10 NTU (Figure 2).

What affects light compensation point?

Temperature, illumination, pH, and nutrient

are the main factors influence the biomass and lipid synthesis of microalgae. The accumulation of microalgae biomass first increases with the increase of light intensity, and after reaching the light compensation point, decreases with the increase of light intensity.

What is the calcium carbonate compensation depth is there a compensation depth for the siliceous components of once living things?

What is the calcium carbonate compensation depth? Is there a compensation depth for the siliceous components of once living things?

The depth in the oceans below which the rate of supply of calcite lags behind the rate of solution, such that no calcite is preserved

.

Why are some other parts of the deep ocean floor mostly covered with carbonate ooze?

Variation in input, productivity, and dissolution rates in the geologic past have caused the CCD to vary over 2,000 metres (about 6,600 feet).

The CCD intersects the flanks of the world’s oceanic ridges

, and as a result these are mostly blanketed by carbonate oozes.

What are the most important factors that control sedimentation in the ocean?

Factors that control sedimentation include

particle size and the turbulence of the depositional environment

. Terrigenous sediments strongly reflect their source and are transported to the sea by wind, rivers and glaciers. Rate of erosion is important in determining nature of sediments.

At what depth would you likely find calcareous ooze?

The CCD is usually found at depths of

4 – 4.5 km

, although it is much shallower at the poles where the surface water is cold. Thus calcareous oozes will mostly be found in tropical or temperate waters less than about 4 km deep, such as along the mid-ocean ridge systems and atop seamounts and plateaus.

What conditions promote carbonate dissolution?

Rainfall has a pH of about 6 – a weak acid. In general, carbonates go into solution in an acid solution and precipitate in a basic solution. From equation [2],

an increase in the acidity of the solution

causes the system to shift to the right and calcite dissolves.

How does pH affect calcium carbonate?

The increase in the temperature or the solution pH leads to the acceleration of calcium carbonate nucleation and crystal growth

. Iron addition retards the formation of calcium carbonate crystals and enhanced the precipitation in the bulk solution.

How does pH affect solubility of calcium carbonate?

The solubility of CaCO 3 is dependent on the pH and

the precipitation of CaCO 3 increase with increasing pH

[7]. Precipitation of CaCO 3 occurs spontaneously at alkaline conditions, while an acidic environment prevents precipitation and supports dissolution [8] .

How is compensation depth measured?

The compensation point, the depth where photosynthesis equals respiration can be estimated by

multiplying the Secchi disk depth by about two

.

Where does critical depth occur?

Critical depth occurs

when the flow in a channel has a minimum specific energy

. Specific energy refers to the sum of the depth of flow and the velocity head.

What happens to producers if they slip below the compensation depth?

What happens to photo and zooplankton below their compensation depths? phytoplankton: The deeper the position is, the less light it receives. Eventually, if it stays below the compensation depth for more than a few days,

it will consume its carbohydrate reserves and die

.

How does temperature affect calcium carbonate?

The increase in the temperature decreases the solubility of CaCO
₃

. Indeed, the concentration of CO
₂
dissolved in water decreases with increasing temperatures. This leads to the increase in the solution pH and to the acceleration of calcium carbonate crystal formation (see Eq. (3)).

Does pH affect the dissolution of calcium carbonate shells?

Acidity is a problem for coral and other animals that have shells or skeletons made of calcium carbonate (CaCO
₃
) because calcium carbonate dissolves in acid. Thus,

lower pH makes it more difficult for these animals to construct their body parts and can dissolve and weaken the parts that they have already created

.