Thermocline.
a cold body of water located between north America and eastern Russia IS
The boundary between a cold and warm air mass is called a front. One type of air will replace another as a front passes.
Our body temperature is high then cold water so when it comes in contact with our body energy in the form of heat is transferred from body to water so it decreases our body temperature and we feel cold.
both warm and cold front
Because, when you have been swimming, you have been in the water, and water is sometimes cold, so when the cold has entered your body, your body goes cold.
One theory is that the cold water causes the blood vessels surrounding stomach to shrink, slowing absorption. The body also has to expend energy to heat cold water to body temperature (hydrating the body more quickly). On the other hand, after physical exertion, cold water may help cool the body more effectively than room temperature water. Note: the Difference between the two are minute and for the most part negligible. the body uses few calories in order to raise the temp of water, and it does so quickly.
The rate at which the body loses heat in cold water depends on factors like water temperature, body composition, and level of physical activity. Generally, the body loses heat much faster in cold water compared to cold air, as water conducts heat away from the body 25 times faster than air. Hypothermia can occur in cold water in as little as 15 minutes.
An example of a relict boundary is the boundary between East and West Berlin that existed during the Cold War. Even though the city has been reunified, remnants of the physical and ideological divide can still be observed in certain areas.
A sharp change in temperature or air mass characteristics is considered a boundary between two different fronts. This boundary is known as a "frontal boundary" and often leads to distinct weather changes and patterns.
Thermal Layer
A cold water basin is a small body of water that acts as a drainage area for a river. It is called a cold water basin because the water is usually moving and therefore cold.
Sitting in a cold bathtub helps cool down your body because the cold water draws heat away from your skin, lowering your body temperature. This process is known as conduction, where heat is transferred from your body to the cold water.