Question - Is water warmer the deeper you go?

Answered by: Lawrence Ramirez  |  Category: General  |  Last Updated: 21-06-2022  |  Views: 746  |  Total Questions: 14

Cold water has a higher density than warm water. Water gets colder with depth because cold, salty ocean water sinks to the bottom of the ocean basins below the less dense warmer water near the surface. However, the ocean is not standing still. The heat gradient in the oceans decreases with depth because cold water is denser and so it flows downward beneath warmer water. The center of the Earth heats the Earth so when you go deeper it gets hoter. The ocean is on the serface of the Earth and is heated by the sun so the further down you go the colder it get. When the upper water layers warm in the summer months, they become separated from deep water by a transition zone known as a thermocline. In a thermocline, the temperature decreases rapidly with small increases in depth. This phenomenon linking temperature change with depth is called temperature stratification. But, in winter some lake surfaces can get very cold. When this happens, the surface water becomes more dense than the deeper water with a more constant year-round temperature (which is now warmer than the surface), and the lake "turns", when the colder surface water sinks to the lake bottom. Well, water is mostly regarded as incompressible, which means density doesn't change. Water is a little compressible in reality. Pressure does increase the deeper you go, but the water down there should have more or less the same density. At higher pressures the material becomes more dense and the object sinks faster.

TAGS: warmer deeper
https://www.sciencebuddies.org/science-fair-projects/project-ideas/Energy_p040/energy-power/want-to-

In winter, when it is cold outside, the temperature underground is warmer than the air. The liquid, or solution, circulating through the pipes in the ground absorbs heat from the ground.

https://news.stanford.edu/pr/00/000315rocks.html

Geologists calculate that, for every mile you dig beneath the Earth's surface, the temperature rises 15º F and the pressure increases simultaneously at a rate of about 7, 300 pounds per square inch. Violations of the 15-degrees-per-mile rule are unknown and constitute the notorious forbidden zone.

https://en.wikipedia.org/wiki/Geothermal_gradient

Geothermal gradient is the rate of increasing temperature with respect to increasing depth in the Earth's interior. Away from tectonic plate boundaries, it is about 25–30 °C/km (72-87 °F/mi) of depth near the surface in most of the world.

https://en.wikipedia.org/wiki/London_Underground_cooling

The heat in the tunnels is largely generated by the trains, with a small amount coming from station equipment and passengers. Temperatures on the Underground have slowly increased as the clay around the tunnels has warmed up; in the early days of the Underground it was advertised as a place to keep cool on hot days.

https://www.apextribune.com/lakes-are-getting-warmer-than-oceans/213764/

According to research, the water in lakes is rising in temperature faster than the water in oceans and faster than the atmosphere's temperature. The study was funded by the National Science Foundation together with NASA and found that lakes are warming about 0. 6 degrees per decade.

https://www.extremetech.com/extreme/187291-to-the-core-how-can-we-travel-to-the-center-of-the-earth

It had taken them 19 years — from 1970 to 1989 — to drill to 12, 262 meters. The Kola Superdeep Borehole is still the deepest artificial hole on Earth.

http://www.lovetheoutdoors.com/how-to-fish-in-cold-water/

As it gets colder, though, fish tend to migrate in schools to deeper water. As the depth increases, temperature stabilizes and it's easier for them to do their version of light hibernation. As an added bonus, fish of most species typically hold in tighter groups when the water's cold.

http://www.mbgnet.net/fresh/lakes/pond.htm

Three distinct layers develop: The top layer stays warm at around 65–75 degrees F (18. 8–24. 5 degrees C). The middle layer drops dramatically, usually to 45–65 degrees F (7. 4–18. 8 degrees C). The bottom layer is the coldest, staying at around 39–45 degrees F (4. 0–7. 4 degrees C).

https://www.nature.com/news/lakes-warm-worldwide-1.19034

From Baikal to Tahoe, the world's lakes are warming quickly — by about 0. 3 ºC each decade on average, according to a new global synthesis of lake temperature data. The heat-up may be already triggering major ecosystem shifts, from harmful algal blooms to declining fish populations.

https://www.fondriest.com/environmental-measurements/parameters/water-quality/water-temperature/

Dissolved Oxygen and Water Temperature The solubility of oxygen and other gases will decrease as temperature increases 9. This means that colder lakes and streams can hold more dissolved oxygen than warmer waters. If water is too warm, it will not hold enough oxygen for aquatic organisms to survive.

https://oceanservice.noaa.gov/facts/fish-freeze.html

Like many people, fish tend to be less active in the cold. As cold-blooded creatures, their metabolism dips when temperatures take a dive. The layer of ice that forms on top of a lake, pond, river, or stream provides some insulation that helps the waterbody retain its heat.

https://www.theparklands.org/Blog/82/Where-Do-Fish-Go-in-the-Winter

Fish are cold-blooded or poikilothermic, meaning that their body temperatures vary with the surrounding temperature. During the cold of winter fish become less active. They find little pockets out of the way of fast moving water where they can stay still and conserve energy.