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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

How many times each day does a flood tide occur?

Speaking in general terms, the high and low tides occur twice daily.

Is a tsunami in Montreal possible?

It is unlikely for Montreal to experience a tsunami as it is a landlocked city located far from significant tectonic plate boundaries where tsunamis typically occur. Tsunamis are more commonly associated with coastal regions near major fault lines or volcanic activity.

How does the ocean floor near the center slit differ from the ocean floor near the side slit?

The ocean floor near the center slit typically shows deeper depths and a more pronounced trench-like formation compared to the ocean floor near the side slit. The center slit is often associated with tectonic plate boundaries, resulting in more significant geological activity and topographical features. In contrast, the side slit may exhibit a shallower gradient and less dramatic relief due to its location away from the main tectonic activity.

What is ODAS buoy?

ODAS stands for "Ocean Data Acquisition System". This is a type of buoy that obtains scientific data on sea conditions at the buoy location automatically. Typical examples are yellow, with instrumentation and solar power panels installed that will automatically sample local sea conditions such as water temperature, air pressure and temperature, wind speed and direction, average wave height and period.

What does not affect wave height in deep water?

Water depth does not affect wave height in deep water. In deep water, the wave height is determined by the wind speed, duration, and fetch (distance wind has traveled over water).

What is another name for thermohaline?

Another name for thermohaline circulation is the ocean conveyor belt. This circulation pattern involves the movement of water around the world's oceans based on differences in temperature and salinity.

Where do tsunamis form and happen?

A tsunami is one or more water waves caused by a large displacement of water. This is typically in an ocean but the large lakes of the world are big enough to allow a tsunami to form. Tsunamis are usually caused by undersea earthquakes. It is rare, but a tsunami can be cause by an avalanche or landslide that displaces a large volume of water or even an asteroid or comet hitting the ocean.

A tsunami commonly forms when there is a dramatic uplift or fall of the ocean bottom associated with a submarine earthquake. In that case a large volume of water suddenly drops and surrounding water rushes in or a large volume of water is uplifted and water flows away from the area. Tsunami waves are not like normal ocean waves which do not result in a net transport of water. When a tsunami wave forms it is because a large volume of water is entering or leaving an area of the ocean. For this reason the propagation of a tsunami is different and very fast, hundreds of kilometers per hour.

Tsunamis form wherever an undersea earthquake can form, so they are particularly common at the boundary of the Earth's tectonic plates. These plates have areas where they are particularly active, the Pacific "ring of fire" being the most well known.

Typically a tsunami exhibits several waves in succession separated by minutes or hours. This will depend on the character of the original disturbance being fast or slow or limited to a small area or large. When tsunamis propagate across the ocean, they have a small amplitude a few inches (centimeters) high but they extend for hundreds of kilometers. Since there is actual flow of of a large volume of water associated with a tsunami, this height increases as the volume of water approaches the shallower coastal region. At the coast, the height is a fraction of a meter (a few feet) to hundreds of meters.

Who plays in blue water high?

"Blue Water High" featured a cast of young Australian actors, including Chris Foy, Sophie Luck, Tahyna Tozzi, and Mara Scherzinger, among others. These actors portrayed the group of aspiring surfers and students at Solar Blue, a prestigious sports academy.

When did the Southern Peru tsunami on June 23 of 2001 hit the coast?

The Southern Peru tsunami on June 23, 2001, hit the coast in the afternoon after a powerful earthquake struck near the southern city of Arequipa. The tsunami caused widespread damage along the coast and resulted in numerous casualties.

Why will sea levels rise?

The earth is going through a period of warming, known as global warming. As the earth becomes warmer the Ice in very cold parts of the world begins to melt. Instead of floating on top of the water in solid form, this now melted water goes (diffuses) into the ocean, causing the seal level to rise.

How fast do tidal currents move?

It depends on the depth. On deep oceans it can hit 500 mph. Near the land it slows down to 20 or 30 mph.

http://www.publicaffairs.noaa.gov/grounders/tsunamis.html

It is important to note that the 500 mph is simply a theory, there is no method to truly measure the speed of the wave. Also, if you follow the above link it explains that when the tsunami approaches any land it slows to 20-30 mph. This would even further refute the 500 mph.

Is milli molar bigger than micro molar?

Yes, mili is 10-3 and micro is 10-6 so mili is bigger.

On most seacoasts the average time from one high tide to the next high tide is about?

As the Earth turns on its axis, the moon moves around the Earth. This causes the tidal bulges to travel from east to west. Every place along the seashore has two high tides and two low tides daily. All parts of the oceans pass under the moon in 24 hours and 50 minutes. In one fourth of this time, the tides change. So, tides change approximately every 6 hours and 12.5 minutes. From one high tide to another high tide is 12 hours 25 minutes. it can be either two answers. 1. 6 hours and 12.5 minutes (6 hrs and 13minutes if rounded) 2. 12 hrs and 25 minutes.

Which type of wave has a trough and crest?

The type of wave that has a trough and crest is called a transverse wave. In a transverse wave, the particles of the medium move perpendicular to the direction of the wave propagation, resulting in the formation of crests and troughs.

Does a tsunami have a purpose?

Tsunamis do not have a purpose in the traditional sense. They are natural phenomena caused by underwater disturbances like earthquakes, landslides, or volcanic eruptions. While they can have devastating impacts on coastal communities, they are simply a result of tectonic and geological processes.

What are Sea Pens?

Sea pens are marine cnidarians that have a soft cylindrical body with a feathery, brightly colored polyp at one end. They are named for their resemblance to old-fashioned quill pens. Sea pens are typically found in deep-sea environments and are filter feeders, using their polyps to capture plankton from the water.

When and where do tsunamis take place?

Tsunamis usually occur after earth surface disturbances, (of course these disturbances can occur on land or under the sea). They are not seasonal and hence there isn't a time of year they are more likely to occur.

Why are oceans salty but the great lakes are not salty?

The Great Lakes have an outlet: The Saint Lawrence. The reason why most lakes are not salty is because they have an outlet so the minerals do not accumulate. On top of that, they are well above sea level, so there is no chance of saltwater intrusion.

What are three organisms that live in the ocean that are used to make products that are used everyday?

I got this from another website, but I am not sure if it is accurate! Apparently kelp is in shampoo, algin is in salad dressing, agar is in yogurt, and coral is in sunblock! Hope I helped!

How can you use models in a scientific sentence?

Scientists use models to simplify complex systems, making it easier to understand and predict how they work. Models help researchers test hypotheses, make predictions, and explore different scenarios in a controlled environment before conducting actual experiments or observations.

Why is the ocean horizon wavy wobbly?

No clue... noticed it today for the first time.... Never seen it before and I live right on the beach in Miami.

Usually the horizon is a nice and even line, and now it is choppy. Easiest explanation would be the waves far out in the ocean, but they are way too big, and stay the same even when I use my binoculars.


It has to be some visual illusion.

A wave that moves back down the beach under the next wave?

This phenomenon is known as "backwash." Backwash occurs when the water from a previous wave recedes back toward the ocean, usually after breaking on the shore, while the next wave approaches. It plays a key role in the continual exchange of water between the ocean and the coast.

Is rain water drinkable?

You can drink it, it's sterile, and as long as it's fresh, and you don't have any UTIs bacteria free. It is, for the most part completely safe. That said, it is all the stuff your body didn't want first time through, and probably won't taste very pleasant. I imagine it would be warm, salty and acidic tasting.

"Clear" pee is mostly water, and yes, it's true the more you drink, the more diluted the stuff your body is looking to get rid of will be, but my understanding of the body is that it will never be pure water.

The human body is not very efficient, and some people even claim drinking urine is of some medical benefit, in that it gives your body a second chance to get some of the "good bits" which were unnecessarily filtered first time, though this is at best speculative.

You would mostly be very safe to do so, if you want, though it is a hard one to recommend to anyone. If you were stranded, without water, and on the verge of dehydration, then yes, go right ahead (though if you were on the verge of dehydration, you wouldn't be peeing anyway, so you would have to start storing it early on in this situation). But in the civilized world, with water on tap and better drinks readily available, it's hard to know why you would want to.

If you're gonna do it though, my suggestions would be...

1. Don't drink your first pee of the day, or the one you've been waiting for hours to "relieve yourself" of. It'll be more concentrated, stronger tasting and harder to stomach, and has more chance of containing "nasties".

2. Don't do it if you have any reason at all to believe you may be suffering any infection "down there". Don't run the risk of spreading bacteria around your body. If the smell or colour are particularly strong, or different from normal, you may have an infection, see a doctor. If there is any pain peeing or blood in the urine, you have bigger problems than drinking your pee, SEE A DOCTOR.

3. If you have drunk alcohol, or taken drugs recently, don't drink your pee. Unprocessed alcohol and drugs could, in theory, be present in the urine, and could cause you problems. Also, don't think drinking pee is a "free high" it's not, the compounds in the alcohol or drugs could be significantly changed while in your body and could do you serious damage. Your body is flushing them out for a reason.

4. Don't be tempted to refrigerate it to make it easier to go down. While fresh pee is sterile, it can grow bacteria quickly. If you must drink it, do it while it's fresh. It'll be warm, and probably not pleasant, but that's the price you pay.

5. Drink lots of water before trying it. As you said, the more water you drink the more diluted it'll be, and therefor the easier to drink it'll be. Just because it's clear though, don't expect it to taste just like water, though have no frame of reference for it, i imagine it probably won't. Don't set your sights too high. I repeat, it probably won't be pleasant.

6. Under no circumstances be tempted to drink someone else's pee. It should go without saying, yet i feel i should say it (you're considering drinking pee for a friend, so who knows where it could lead) it has all the above problems (infection, as well as added STI issues, alcohol, drugs, no way of knowing how diluted it will be) with the added problem of not knowing whether they are telling you the truth about these things.

7. Ask yourself... is this really something i want to do. Why are you even considering this? although some people enjoy it, or have particular sexual enjoyment out of this sort of thing if you're doing it just because your friend told you to, is it really worth doing? What really do you stand to gain from it? If you don't have a good answer to that, then don't do it.

In fact, my recommendation to most people is DON'T DO IT. Really, there isn't any good reason to.

What are the differences between east coast and west coast tides?

Well I would assume it's just where they are located. Most tropical cyclones are still called Hurricanes unless they are further in the pacific ocean closer to countries like Japan and the Philippines then they are called Typhoons but generally speaking Tropical Cyclones that can endanger the Americas are Hurricanes regardless of which coast they are on.