The temperature of the sea water at the sea level in the mid latitude is 140C. * How much has this temperature changed at 1500m depth? Ans. The temperature of sea water at the sea level at 1500 m depth is 5 degrees centigrade.

The geothermal gradient is the amount that the Earth’s temperature increases with depth. It indicates heat flowing from the Earth’s warm interior to its surface. On average, the temperature increases by about 25°C for every kilometer of depth.

How does pressure change in relation to depth below Earth’s surface? As the depth increase the pressure increases.

As you go deeper into the earth the pressure is greater as well as it gets hotter this may make changes to the paths of seismic waves. As you go deeper into the earth the force pressing down is greater that is why the pressure is greater and the temperature gets hotter.

On average, with increasing depth, the temperature increases by around 3°C per 100m. In the upper surface layers the heat in the ground comes from the sun. This means that the geothermal gradient (the increase in temperature with depth) varies with the chemical composition and age of the rocks.

In high latitude (polar) regions, there is little difference between the surface temperature and the deep water temperature, and temperature is fairly constant (and cold) at all depths. Polar waters therefore lack a strong thermocline, and as with tropical water, there is little seasonal change in temperatures.

This is caused by a fluctuation in the level of the thermocline. A thermocline is a transition layer between deep and surface water (or mixed layer). In the thermocline, the temperature decreases rapidly from the mixed layer temperature to the much colder deep water temperature.

Pressure

A thermocline is the transition layer between warmer mixed water at the ocean’s surface and cooler deep water below. At depths below 13,100 feet, the temperature ranges from near freezing to just above the freezing point of water as depth increases.

Thermocline, oceanic water layer in which water temperature decreases rapidly with increasing depth. A widespread permanent thermocline exists beneath the relatively warm, well-mixed surface layer, from depths of about 200 m (660 feet) to about 1,000 m (3,000 feet), in which interval temperatures diminish steadily.

The clearer the water, the deeper the thermocline. On dingier lakes, it may be only six or eight feet. In clearer ones it may be as deep as 30 feet.

The temperature of ocean water also varies with depth. In the ocean, solar energy is reflected in the upper surface or rapidly absorbed with depth, meaning that the deeper into the ocean you descend, the less sunlight there is. This results in less warming of the water.

The depth where the oxygen line takes a left toward the zero side of the graph is the top of the thermocline. “You can also go out in the middle of the lake and turn up the sensitivity on your sonar unit until you see a band in the depths,” Dreves said. “That band is the thermocline.

WATER TEMPERATURE

1. Measure the water temperature by submerging the thermometer two-thirds below the surface of the water.
2. Take the measurement in a central flowing location.
3. Let the thermometer adjust to the water temperature for at least 1 minute before removing the thermometer from the water and quickly.

Such a minuscule amount of light penetrates beyond a depth of 200 meters that photosynthesis is no longer possible. The aphotic, or “midnight,” zone exists in depths below 1,000 meters (3,280 feet). Sunlight does not penetrate to these depths and the zone is bathed in darkness.

The thermocline is a layer of water towards the bottom that has no oxygen or very little oxygen. Fish can venture below the thermocline to feed but they can’t stay there for extended periods of time. Thermocline plays a sigificant role in how you approach fishing for catfish in the summer.

There may not be very many fish below the thermocline, but it’s not always deep. In fact, it can be quite shallow at times. I’ve often found what I believe to be a thermocline in about 3 feet of water below heavy lily pads and vegetation. The total water depth might be 5 feet.

A thermocline refers to a boundary of water which separates regions of warmer water from the colder water below. A Thermocline is formed by the effect of the sun, which heats the surface of the water and keeps the upper parts of the ocean or water in a lake, warm.

If you raise a minnow too high, the warmer water will quickly kill the bait. If you drop the bait below the thermocline, the lack of oxygen will kill the bait. The next step to finding fish is locating where the thermocline layer meets suitable fish cover.

Rivers cannot have thermocline because the current pushed the water top to bottom as well as downstream. You may have been seeing a heavy migration of baitfish.

Below the thermocline lies the abyssal region of the oceans, where the temperature is much lower and variability generally much weaker than in the upper ocean. The average temperature is approximately 3.5 °C. These cold waters result from the cooling of water masses by the atmosphere in polar regions.

A thermocline (also known as the thermal layer or the metalimnion in lakes) is a thin but distinct layer in a large body of fluid (e.g. water, as in an ocean or lake; or air, e.g. an atmosphere) in which temperature changes more drastically with depth than it does in the layers above or below.

Pressure in the mesopelagic zone ranges from about 300 pounds per square inch (psi) to 1500 psi. The fact that many organisms leave the surface waters during the daylight hours and then return at night has been known since the Challenger expedition in the 1860’s.

The pycnocline encompasses both the halocline (salinity gradients) and the thermocline (temperature gradients)refers to the rapid change in density with depth. Because density is a function of temperature and salinity, the pycnocline is a function of the thermocline and halocline.

Temperature. Thermocline of the tropical ocean. The two areas of greatest temperature gradient in the oceans are the transition zone between the surface waters and the deep waters, the thermocline, and the transition between the deep-sea floor and the hot water flows at the hydrothermal vents.

Part of the reason it took so long to find them is because hydrothermal vents are quite small (~50 meters across) and are usually found at depths of 2000 m or more.

Animals such as scaly-foot gastropods (Chrysomallon squamiferum) and yeti crabs (Kiwa species) have only been recorded at hydrothermal vents. Large colonies of vent mussels and tube worms can also be found living there. In 1980, the Pompeii worm (Alvinella pompejana) was identified living on the sides of vent chimneys.

Hydrothermal vents form at locations where seawater meets magma. The particles are predominantly very fine-grained sulfide minerals formed when the hot hydrothermal fluids mix with near-freezing seawater. These minerals solidify as they cool, forming chimney-like structures.