Questions tagged [pressure]
The pressure tag has no usage guidance.
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How come the pressure/shock waves of an explosive volcanic eruption almost always fail to cause any damage?
(Please read the text thoroughly before giving an answer) A big explosive eruption goes off with the energy of hundreds or thousands of nuclear weapons combined. It would be expected that the massive ...
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Mass weighted vertical average of stream function in python
I have a netCDF file of stream function (psi) having dimension (latitude, level), level is pressure level. There are 5 pressure levels (700,600,500,400,300 hPa). I need to compute the mass weighted ...
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Do I understand pressure coordinates in the right way?
The question is simple: I still have problems with atmospheric pressure coordinates:
Given the pressure dependence in the picture, what are the velocity coordinates of an air parcel moving with $\vec ...
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Are rocks extracted from deep drilling, brittle due to pore pressure?
When a saturated rock sample is rapidly extracted from a place with high water pressure, as happens in oil drilling or deep mining, the water is trapped inside the rock at high pressure, trying to ...
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Air pressure, fronts and temperature
I have spent hours on this topic and I seem unable to make sense of it.
If air moves from high pressure toward low pressure, and wind is the movement of air due to differences in pressure, how can, ...
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Altitudinal gradient in air density at poles
In the descriptions of polar cells, it is usually described as cold and dense air sinks at poles. But I don't understand why air at high altitude is denser than low altitude at poles.
The polar cells ...
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Is there superionic ice in the earth? and how did it get there?
I recently researched about Superionic Ice which basically is Water under so much pressure and heat that it turns into a black hot ice. I read this article about it too. I found out Superionic ice ...
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ERA5 Single Level - Calculate relative humidity
for ERA5 hourly data on single level relative humidity can not be downloaded. However, dewpoint temperature is given and in the description it is stated that "combined with temperature and ...
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Atmospheric pressure: intra-day time series
I would like to get access to a time series of data on atmospheric pressure over a short timescale. I need to get a feel for how much variation there is over seconds and minutes, so a data point every ...
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Why does warmer maritime air create low pressure systems while continental land masses create high pressure systems?
From Hurth's book, The Lost Art of Finding Our Way
, there is a section on Air Mass and Fronts (page 267)
On average, since cold air is denser than warm air, the northern stretches of continental ...
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In terms of atmospheric pressure, why do pressure systems move and what factors affect the general pressure of an area?
With very limited background in the physics of air and weather, this question occurred to me for no particular reason. With that in mind, a simplified answer would be much appreciated.
This weatherman'...
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What is the relationship between air pressure and temperature?
I'm trying to reconcile a paradox regarding air pressure and temperature.
On the one hand, compressing air heats it up, while expanding it cools it. So density and temperature are proportional.
On the ...
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When diamonds "migrate" from deep underground to the surface, do they maintain pressure inside when there is no more pressure outside? If so, how?
From Science News' A mineral found in a diamond’s flaws contains the source of some of Earth’s heat:
A tiny bit of rock trapped inside a diamond is now opening a brand-new window into what the planet’...
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What is the pressure at the center of the Earth?
In the question Does gravity increase the closer to the core you get?, it was determined that gravity reduces to zero at the center of the Earth. That is logical.
However if pressure is proportional ...
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Why should wellbores be supported by pressure, but not mine tunnels?
I recently read about safe mud window - it states that the mud pressure in a wellbore should be high enough to prevent well collapse, and should not exceed the formation's fracture pressure. But ...
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