What makes hot spots and cold spots in water?

Question

What makes hot spots and cold spots in water?

Answer 1

Aside from the obvious reasons (say in a public pool), or aside from there having been some hotter or colder water added just prior to your being there, water is a "fluid" (gas or liquid). It moves and flows in complicated patterns due to temperature, objects, particulates, and various energy waves moving thru it.

At times there will be pockets of higher or lower energy that reside for some period of time. These manifest as higher or lower temperature places, and don't give up, or absorb heat from the neighboring water mass due to the high heat capacity of water in general. Meaning; water tends to want to maintain its temperature.

Colder water is more dense than warmer water, and water will flow over itself for this (and other) reason(s). Water in a river has a speed gradient from the bottom to the top. Water near the bottom moves slower than at the top. Water is also colder at the bottom than at the top as a result of this. Lower speed....lower energy...lower temperature to put it simply.

So when you feel cold water places in say a lake or whatever, those are little pockets of lower energy water. Likewise, warm places are higher energy water patches.....unless you're at a public pool.    :)

Answer 2

Currents, Underground springs, Volcanic activity on the floor of the ocean,Water coming in from other sources ie rivers and streams, pollutants pouring in from industry.  This all depends on where you are.

Answer 3

How deep the water is where you are at.

When it is cold the water is deep and when you are back to a warm place it is more shallow..

=)