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Oceanography

Oceanography, also called marine science, is the study of oceans. It includes the study of physical oceanography, marine chemistry, marine geology, and marine biology. Areas covered in oceanography are the shape, depth, and distribution of oceans, and also their composition, life forms, ecology, and water currents, as well as their legal status. If you would like to know more or share your knowledge about oceanography, ask and answer questions here! Includes questions related to the study of Earth's oceans and seas.

1,839 Questions

Why is the sea water and freshwater pH different?

The pH of seawater is typically higher than freshwater due to the presence of minerals and salts, which can buffer against changes in acidity. Freshwater bodies are more vulnerable to changes in pH because they lack these buffering compounds. Human activities such as pollution and acid rain can also contribute to fluctuations in freshwater pH.

Was the US ever covered by ocean?

Yes, parts of the United States were covered by ocean in the past. During various periods in history, different regions of the US have experienced flooding or sea level rise that resulted in temporary or even permanent submersion under water. Examples include parts of Florida and Louisiana that were once underwater, and ancient seas that covered areas like the Midwest.

Does the pressure in the ocean change the shape of a glass bottle?

Yes, the pressure in the ocean can potentially change the shape of a glass bottle. The external water pressure increases the deeper you go in the ocean, which can lead to the bottle being compressed or deformed due to the difference in pressure inside and outside the bottle.

Is the pH of the Earth's Oceans Changing?

The Oceans play a huge part in the carbon cycle, and the Earth's oceans act as a carbon sink. As the carbon Dioxide levels in the atmosphere increase, as they have been doing for a few decades especially due to anthropogenic (human made) greenhouse gas emissions from the combustion of fossil fuel reserves, the volume of carbon dioxide that the ocean has been absorbing has increased. When the concentration of carbon dioxide increases within a liquid, the pH decreases therefore becomes more acidic. As the carbon dioxide concentration has risen in the Earth's atmosphere, some sources have calculated that the pH of the oceans has decreased (become more acidic) from pH 8.179 to 8.104 (a change of - 0.075). Models have predicted that by the year 2100, the ocean's pH could change to around pH 7.824, a reduction of - 0.355 since the pre-industrial age in the 1700's. *Note that the pH scale is a logarithmic scale, and pH 7 is neutral. This change in pH in the World's oceans could have huge negative effects on the delicate ecological systems, in particular oceanic calcifying organisms. For example, evidence suggests that one of the Natural Wonders of the World; The Great Barrier Reef could be at risk from this oceanic acidification.

How much is a Marine Biologist's salary?

This varies greatly by rank:

Brand new private (E1): $28,800

4-Star General with 38 years of service (General Pace): $224,100

Note that this does not include any benefits or allowances, such as allowances for subsistence (food) and housing that military members receive (and that are non-taxable).

Examples of lithified sediment?

Some examples of lithified sediment are sandstone, shale, and limestone. Sandstone forms from grains of sand compacted together over time, while shale is formed from compacted clay and silt particles. Limestone is made predominantly of calcite that has accumulated and solidified in marine environments.

What are countries affected the most by typhoons?

It was really just southern Burma that was affected.

What is a ripple tank and how it is used?

A ripple tank is a device used to demonstrate and study wave phenomena, such as interference, diffraction, and reflection. It consists of a shallow tray of water with a vibrating source that creates ripples on the surface of the water. By observing the behavior of these ripples, one can better understand wave properties.

What is the most dangerous fish in the Bering Sea?

The most dangerous fish in the Bering Sea is the Pacific sleeper shark. These sharks are not known to attack humans, but they have powerful jaws and sharp teeth that can potentially cause serious injuries.

How can tsunamis be avoided?

If you are quick enough you can get out of the way of it. However no one has yet come up with a way of stopping the earth from making the movements that cause them. The forces are simply too great.

What layer makes up most of the earths volume?

ANSWER: The crust floats on the asthenospheric mantle, which is convecting due to the forces of plate tectonics. The mantle, which extends to a depth of nearly 3,000 kilometers is the source of all magma. The mantle makes up 84% of the earth's volume and can sometimes get as hot as 3700°C. ==== ====

Why doesn't seawater leak into the depths of the earth?

Seawater does not leak into the depths of the Earth because the Earth's crust acts as a barrier preventing water from seeping through. Additionally, the high temperature and pressure in the Earth's mantle would cause seawater to evaporate or be chemically altered before it could reach those depths.

What is the formation of black sand in the pacific coast?

Black sand is formed from volcanic minerals like basalt and lava that have eroded over time. As volcanic rocks break down, they create tiny black grains that make up black sand beaches along the Pacific coast. These beaches are common in areas with active or historic volcanic activity.

What is another name for mermaid and merman?

Another name for mermaid is aphrodites spawn water spirits water babies sea nymphs and of course merfolk!!

What is a process which occurs on the inside of a meander?

Erosion occurs on the inside of a meander as the faster-flowing water erodes and undercuts the bank, resulting in the formation of a cut bank. This erosion contributes to the widening and deepening of the meander loop over time.

The place in the Earth where the earthquake actually occurs is known as the?

The place in the Earth where the earthquake actually occurs is known as the focus or hypocenter. This is the point deep within the Earth where the seismic energy is first released, leading to the generation of seismic waves.

What does pillar coral eat?

Pillar coral is a filter feeder, meaning it gets its nutrition from tiny organisms in the water, such as zooplankton and phytoplankton. It uses its tentacles to capture and consume these small organisms.

How does one acquire rock samples of the ocean floor?

Rock samples of the ocean floor can be acquired through various methods such as deep-sea drilling or collecting samples using submersibles or remotely operated vehicles. Scientists also study samples brought up during underwater volcanic eruptions or through natural processes like landslides and fault movements. These samples provide valuable insights into the composition and history of the oceanic crust.

What is an extremely fertile area where a river meet an ocean?

An area where a river meets an ocean is called an estuary. Estuaries are extremely fertile because they receive a mix of fresh water from the river and salt water from the ocean, creating a unique environment that supports a diverse range of plant and animal species.

What are hyaloclastites?

A rocktype formed by the flowing or intrusion of lava or magma into water, ice, or water-saturated sediment, and its granulation or shattering into small angular fragments. The process is often driven by contact steam explosivity, cooling processes or mass movement. The sediment consists of hyaline shards of rapid solidified magma and volcanic clasts which are bound together with a glassy or feltlike matrix with the same composition as the clast. They are observed at all types of submarine volcanism (like mid-ocean ridges or seamounts).