What Causes A Decrease In Oxygen Levels Beyond The Sunlit Layer?

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What happens to pH levels in regions where there is more carbon dioxide present quizlet?

What happens to pH levels in regions where there is more carbon dioxide present? The pH levels decrease in these regions.

What causes the SOFAR channel?

This is called the sound speed minimum. The sound speed minimum creates a sound channel in which sound waves can travel long distances. … The sound speed minimum at a depth of 1000 meters is called the deep sound channel or more historically the SOFAR channel.

What causes sofar layer and shadow zones in the ocean?

Within the ocean the speed of sound varies with changes in depth that accompany normal changes in temperature and pressure. Specific combinations of temperature pressure and salinity may act to create shadow zones or reflective layers that are resistant to the propagation of sound waves.

What kind of information can marine microfossils not provide?

What kind of information can marine microfossils not provide? a. Temperature variations in the surface and deep water.

What causes the solar heating of Earth to have seasonal variations?

What causes the solar heating of Earth to have seasonal variations? The tilt of the Earths axis from the sun.

What most affects wind patterns in the atmosphere of the earth?

Differences in atmospheric pressure generate winds. At the Equator the sun warms the water and land more than it does the rest of the globe. Warm equatorial air rises higher into the atmosphere and migrates toward the poles. This is a low-pressure system.

What factors affect salinity?

The factors affecting the amount of salt in different oceans seas are called controlling factors of oceanic salinity. Evaporation precipitation the influx of river water prevailing winds ocean currents and sea waves are significant controlling factors.

Which factor affects the salinity of saltwater wetlands?

Salinity temperature and density of water are interrelated. Hence any change in the temperature or density influences the salinity of water in an area.

What causes the salinity of ocean water to decrease?

Answer: Evaporation of ocean water and formation of sea ice both increase the salinity of the ocean. However these “salinity raising” factors are continually counterbalanced by processes that decrease salinity such as the continuous input of fresh water from rivers precipitation of rain and snow and melting of ice.

What type of storm is the principle cause of weather in the mid latitude regions?

The swirling air rises and cools creating clouds and precipitation. There are two types of cyclones: middle latitude (mid-latitude) cyclones and tropical cyclones. Mid-latitude cyclones are the main cause of winter storms in the middle latitudes. Tropical cyclones are also known as hurricanes.

Which molecule causes a decrease in pH ocean water?

Ocean acidification is mainly caused by carbon dioxide gas in the atmosphere dissolving into the ocean. This leads to a lowering of the water’s pH making the ocean more acidic. Many factors contribute to rising carbon dioxide levels.

Why can sea water hold many times more carbon dioxide than either nitrogen or oxygen at saturation?

Why can seawater hold many times more carbon dioxide than either nitrogen or oxygen at saturation? … Carbon dioxide combines chemically with water to form carbonic acid.

What is the Sofar layer?

The SOFAR channel (short for Sound Fixing and Ranging channel) or deep sound channel (DSC) is a horizontal layer of water in the ocean at which depth the speed of sound is at its minimum. … This phenomenon is an important factor in ocean surveillance.

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What is the difference between sonar and sofar?

As nouns the difference between sonar and sofar

is that sonar is while sofar is a system for determining the position of vessels lost at sea by means of explosive sounds.

What depth is SOFAR channel?

approximately 1 000 metres

SOFAR channel in full sound fixing and ranging channel zone of minimum sound speed in the oceans that occurs at depths of approximately 1 000 metres (3 300 feet).

What is the meaning of Pycnocline?

pycnocline in oceanography boundary separating two liquid layers of different densities. In oceans a large density difference between surface waters (or upper 100 metres [330 feet]) and deep ocean water effectively prevents vertical currents the one exception is in polar regions where pycnocline is absent.

When was sofar invented?

This may be the earliest surviving sofa: it was made in England in the 1690s in a style that would long remain popular there referred to as “double Windsor chairs without a division.” V and A Images Settee side view.

What is special about the shadow zone?

The shadow zone is the area of the earth from angular distances of 104 to 140 degrees from a given earthquake that does not receive any direct P waves. From the lack of S waves and a great slowing of the P wave velocity (by about 40%) it was deduced that the outer core is made of liquid. …

How do microfossils of foraminifera help us understand past climate?

By finding cold-water foraminifera of the same age elsewhere in the oceans scientists can construct maps showing where cold water existed at various points in the Earth’s history. The microfossils themselves can speak volumes about the chemistry and temperature of the ocean.

Why does the deep ocean not preserve calcite fossils?

Carbonate compensation depth (CCD) is the depth in the oceans below which the rate of supply of calcite (calcium carbonate) lags behind the rate of solvation such that no calcite is preserved.

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.

How does solar energy regulate the seasons?

The Earth revolves (orbits) around the Sun in one year. The Earth’s rotation axis is tilted relative to the plane of its orbit around the Sun. This tilt of the Earth is responsible for the seasons as the Earth orbits the Sun. The Sun provides energy that sustains all life on Earth.

How does the Sun cause seasons?

The earth’s spin axis is tilted with respect to its orbital plane. This is what causes the seasons. When the earth’s axis points towards the sun it is summer for that hemisphere. … Midway between these two times in spring and autumn the spin axis of the earth points 90 degrees away from the sun.

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How does the position of the Sun affect the intensity of sunlight striking Earth’s surface?

This means that the sun’s rays strike the ground more directly in June. … The intensity of sunlight striking the ground depends on the sun’s angle in the sky. When the sun is at a lower angle the same amount of energy is spread over a larger area of ground so the ground is heated less.

What factors help cause wind?

Wind is caused by air flowing from high pressure to low pressure. The Earth’s rotation prevents that flow from being direct but deflects it side to side(right in the Northern Hemisphere and left in the Southern) so wind flows around the high and low pressure areas.

What are the factors affecting wind?

Factors Affecting Wind Motion:

• Pressure Gradient Force:
• Coriolis Force:
• Centripetal Acceleration:
• Frictional Force:
• Primary or Prevailing Winds:
• Secondary or Periodic Winds:
• Tertiary or Local Winds:

What three factors affect how air flows in our atmosphere?

The three major factors that determine how air circulates in the lower atmosphere are uneven heating of the earth’s surface by the sun rotation of the earth on it’s axis and the properties of air water and land.

What happens if salinity is too low?

This primarily presents itself with characteristic white spots on the fish but also involves breathing problems lethargy and abnormalities to the fins eyes and scales. Low salinity has been shown to be an effective treatment.

How does density affect salinity?

Salinity and density share a positive relationship. As density increases the amount of salts in the water—also known as salinity increases. Various events can contribute to change in the density of seawater. Salinity can decrease from the melting of polar ice or increase from the freezing of polar ice.

Which of the following factors are not affecting ocean salinity?

The correct answer is Coriolis Force.

What are the causes and effects of ocean salinity?

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