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Questions tagged [water]

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3
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1answer
14 views

Aren't fresh water deposits renewed by water cycle?

I have recently watched "How Many People Can Live on Planet Earth?" documentary with David Attenborough. In it, among one of the main factors that will limit total human population Earth can support ...
1
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1answer
35 views

What is the cause of temporary smell and black color of underground water?

We have a well (about 1200KM away from sea and 60 meter deep), the water when taken out has slightly dark color and has smell. But strangely in about 12 hours the smell and black color vanishes and ...
3
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1answer
27 views

water (or hydrological) year around the world, does it change?

Following the commonly-known USGS definition of Water Year (or Hydrological Year) we know that it starts on the 1st October and ends on the next 30th September. Is this definition valid only for ...
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0answers
26 views

Environmenal flow in the context of global gridded hydrological analyses

Environmental flow (EF) is a widely used concept in river basin management and river ecology. There are more than 200 methods to estimate the flow that should be left to the rivers to ensure a ...
5
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1answer
49 views

Judging wind speed based on flags and inland-water observations

About a year ago, I took this video along the Hudson river in NY, and I'm trying to figure out the Beaufort number based on the water and the flags. https://www.youtube.com/watch?v=nqjvTALRWW8 The ...
7
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1answer
76 views

Is salt accumulating over time?

The rainfall leaches salts (Mg,Na,Ca,K,.., Cl) from weathering rocks, where those ions were freed from chemical bonds by sunlight, acidic water etc. The runoff eventually goes into the oceans, where ...
9
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3answers
105 views

Will the oceans swallow all of the land?

I am wondering why, since the oceans could feasibly hold all of the dry land, they in fact do not. For example, the Mariana Trench drops to -10.9km, while Mount Everest only reaches to +8.8km. ...
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0answers
10 views

Does outgassing change the isotopic D/H ratio?

It is known that the D/H-ratio of Earth's water inventory is very similar to that of asteroids. This is usually interpreted in a way that Earth's water must have come from similar, asteroid-like ...
4
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0answers
31 views

How is the vertical distribution of water vapor changing?

In this publication about data assimilation and observations (paywall alert) in the chapter General Concepts in Meteorology and Dynamics (by Andrew Charlton-Perez, William Lahoz, Richard Swinbank, ...
7
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2answers
135 views

Does Earth risk losing its oceans to space due to global warming?

I read that we are facing the very real possibility of Earth's average temperature rising by more that 2 degrees Celsius by the end of the century. As I understand our planet is constantly loosing ...
4
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3answers
55 views

Transferring water using underground channel

I heard in tv show, there are water channels in underground like rivers or small channels! So I just wondered why don't we use such underground water channels to recharge the underground water of one ...
3
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0answers
41 views

Endogenous Theories For the Origin of Earth's Water (Dry/Wet Accretion?)

I have really two questions: (1) what evidence is there in favour that the majority of Earth's water formed with the planet. (2) what evidence is there that the majority of water did not form with ...
2
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1answer
27 views

How we can find hot spring genesis time?

Is there any way we can calculate the time when a particular hot spring come into existence? Also I wanted to know what is average time period for a active hot spring in general, whether it can flow ...
3
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0answers
36 views

What does the motion of water in tsunamis look like?

This is what normal wave motion looks like. Do tsunamis that travel at 60mph look any different?
2
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2answers
79 views

Searching for ground water

I would like to attempt to build a well-type structure in a woodland area. This woodland is mainly inhabited with Silver Birch and Sycamores and there is a shallow stream running down off of a ...
5
votes
2answers
51 views

Comparing Pros and Cons of SWAT and HSPF

To model hydrology in a watershed, two of the most famous and widely used distributed models are SWAT and HSPF. I have some good understanding of HPSF, but I don't know when and why should one prefer ...
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0answers
53 views

Easiest way to find the water table under my feet

I had burnt my finger by digging an empty well and spending my hard-earned money in vain. I then started to study about the resistivity method for finding underground details. But I have many doubts ...
0
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0answers
40 views

Where on Earth is the most windless lake with its own sea breeze?

I am looking for a lake that is circular with a lack of external wind but big enough to have its own sea breeze strong enough to intentionally entrap a blimp in a natural vortex. Is there such a ...
2
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0answers
39 views

How much ocean water is currently being displaced by ships?

According to Statista, as of January 2017, there are approximately 52,000 ships currently operating in the merchant fleet and 11,000 of these are considered bulk carriers. How many ships are there ...
3
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1answer
78 views

Does global warming affect tsunamis?

I have been doing some research into global warming, and I was curious as to whether or not increasing the temperature of the oceans would affect tsunamis to any significant degree. My gut tells me ...
-1
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1answer
27 views

How would one get a submarine to rise? [closed]

How do you get a submarine to rise from the bottom of the ocean to the surface again? Do you press a button? Flip a switch? Use a lever? How do you initiate the surfacing process?
1
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1answer
27 views

Watershed scale water quality indices

I understand water quality indices play a fundamental role in modelling water quality as they integrate multiple water quality parameters to bring about a single dimensionless digit that represents ...
11
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6answers
1k views

If water is a renewable resource, why is there water scarcity?

Water is a renewable resource, renewed by the water cycle. If we use water too quickly, water should get evaporated and come down again as precipitation. So, Why is there water scarcity if water ...
1
vote
1answer
85 views

What'd happen if micro GPS tracker is thrown in Devil's Kettle [closed]

The Devil's Kettle is pothole in the rock where a small river disappears underground in the Judge C.R. Magney State Park in Minnesota. Would it be possible to trace the path of the drainage conduit by ...
3
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0answers
53 views

Reason for higher content of Iodine and Copper than Iron in Seawater?

Does mineral weight contribute to the prevalence of minerals in seawater? Why is there five times more copper in seawater than Iron? Why is there 4000 times more strontium in seawather than Iron, ...
11
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2answers
140 views

Water on Mars and Earth

If water on Earth came from meteorites, why doesn't Mars have substantial water? What made it more highly probable on Earth than on Mars?
8
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3answers
225 views

Why is my pond / lake melting when the temperature is still far below freezing?

I recently moved into a new house with a 2 acre lake behind it. We’ve had 15 consecutive days below freezing, and the last 12 of those have been below 20 degrees (Fahrenheit)! Six days ago I shoveled ...
0
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0answers
69 views

Would this work? Siphoning and desalinating seawater in a desert

An idea I had; though upon researching not completely original. I've seen similar questions being shot-down with potential obstacles, but I think there might be more to this. The idea in its ...
4
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3answers
454 views

Is there any new water formed on, or brought to, Earth?

I've found 2 sources stating that there is new water being formed on Earth. The first site states that it is coming from hydrothermal vents in the sea floor. The second site is basically saying that ...
1
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2answers
111 views

What is it called when water forms to look like a root structure? [closed]

I've tried looking it up on google but I can't find anything. I'm talking about when a small amount of water forms to look like a root hair structure, thin and branching out.
3
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0answers
244 views

Soluble reactive phosphorus or Dissolved Inorganic Phosphorus?

Why is dissolved inorganic phosphorus called soluble reactive phosphorus (SRP) instead of dissolved inorganic phosphorus (DIP)? Seems to me that DIP would be much more clear. See e.g. General ...
14
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2answers
2k views

Lanes of flat ocean surface in coastal waters

When the ocean is still, i.e. there aren't waves that disturb the surface, you often see "lanes" of water that seem flat as opposed to areas where the wind causes ripples. What causes this?
5
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0answers
67 views

Is there a software or means that can generate piper diagrams without some data?

I have cation and anion water chemistry data for some samples and I intend(ed) to generate piper diagrams for the same. However, data for some parameters was not obtained during the determinations of ...
1
vote
1answer
117 views

Is there a lake whose sole source of water is rain and has a hole at the bottom draining it?

Oregon lake has a drain hole at the bottom but also has water flowing into it. Pingualuit crater has no water flowing into it but probably has no drain hole at the bottom either. I'm wondering if ...
8
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2answers
559 views

How old is Earth's groundwater?

In my house, we drink the groundwater that we get from our well. It is 40 meters deep. The question is, how old is the water that we drink today? Is it from the rain 100 years ago? Another issue is, ...
4
votes
1answer
153 views

Is it true that aquaponics yield crops with a lower nutritional value than soil-agriculture?

I read this article, in which a person claims that Aquaponics bring crop quality down by having more water than actual nutritional value. I have read many other sources that say the opposite. Can ...
19
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6answers
11k views

Why doesn't the 71% water of the earth dry or evaporate?

Perhaps a simple question, we know 71% of the earth's surface contains water as oceans. If Earth's age is 4.543 billion years, then I guess it should be decreased with drying or should have been dried ...
6
votes
1answer
126 views

Why does the loss of water from a felsic magma encourage crystallisation?

Felsic magmas crystallise in the crust, unlike mafic magmas which tend to make it to the Earth's surface, for the following reasons: They are more viscous than mafic magmas and therefore it is ...
10
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6answers
5k views

How can we have groundwater depletion when the Earth is 78% covered with oceans?

Why does depletion of underground water levels happening, if the Earth is covered by nearly 78% water, and there is also water in rivers and lakes? How can we still lack groundwater?
4
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1answer
90 views

Is there enough water to cover the surface of a topographically normalized earth?

Is there enough water in the oceans, ice caps, rivers and streams to cover a completely flattened earth, in proportional to land volume and water volume?
6
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1answer
484 views

Was the filling of the Three Gorges Dam's impact on the Earth's rotation rate detectable?

I'm a big fan of Vsauce and the video How Earth Moves is just one example of science related to the Earth available there (there's plenty more). But the statement in this video starting at ...
7
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1answer
2k views

Lake Manasarovar v.s. Lake Rakshastal: fresh-water v.s. salt-water

In Tibetan Plateau, about 4600m elevation, If Lake Manasarovar and Lake Rakshastal ("lake of the demon" ) used to be the same lake, but due to the tectonic activity now they are separated to two by ...
3
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1answer
408 views

From where do asteroids get water from? [closed]

We all know that the water on Earth came from asteroids that collided on the Earth. But how does water form in the asteroids?
9
votes
1answer
2k views

What is the temperature of the flowing water in icy river?

Boundaries of the question: The question is about rivers where water flows in cold area of the earth. Whether it's because of the winter or it's simply cold all year long. Usually, the top layer of ...
8
votes
1answer
101 views

How much water does a wave transport into a sea cave?

How much water is transported (volume) as a wave travels into a sea cave? The wave has a height of 1 m and a period of 12 seconds. The average water depth at the cave mouth it 5 m and the width is 15 ...
2
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0answers
30 views

Thermal spring. Gas and water characterization

I am interested in assessing a thermal spring in the Ecuadorian Andes. However I have no experience in these type of geological features and I am not sure how to proceed. The spring is located over ...
7
votes
0answers
268 views

How much water is the atmosphere losing to space?

Up until recently, I was under a (wrong) impression that the amount of planetary cumulative water resources was finite as I believed its escape from the atmosphere was impossible. I believed that, ...
6
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0answers
54 views

How does fog affect the conductivity/breakdown voltage of air?

Could the breakdown voltage of air significantly go down in very foggy weather (especially very salty fog from seawater)? Kind of a hypothetical question, but if anyone has something on this, I'd ...
6
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2answers
134 views

Calculate flow rate of wetland for gray water treatment

I'm currently attempting to design a water recycling solution for a carwash in a tropical country that currently uses up to 30m$^3$ (8,000 gallons US) of water in 12 hours. Based on my research in ...
4
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1answer
509 views

Why does an artesian well dry slower than a normal well?

In the diagram below, well A is an artesian well and well B is a normal well. Well B's pipe is lower than the water table. By looking at the picture, I decide that well A would try quicker than well B,...