dissolved oxygen
What does dissolved oxygen depend on?
water temperature, the amount of dissolved salts present in the water (salinity), and atmospheric pressure
Why is the density of water and ice different?
It happens that the lattice arrangement allows water molecules to be more spread out than in a liquid,
Are estuaries dense?
What is the polyclinic What is its function?
a medical center where a patient can meet several doctors, get pathological tests and minor procedures done.
What causes the Sofar layer and shadow zones in the ocean
Specific combinations of temperature, pressure, and salinity may act to create shadow zones, or reflective layers, that are resistant to the propagation of sound waves.
What is the problem with dissolved oxygen in water?
When dissolved oxygen becomes too low, fish and other aquatic organisms cannot survive. The colder water is, the more oxygen it can hold
Is the density of ice the same as the density of water?
Ice has a density of 0.917 g/cm³ at 0 °C, whereas water has a density of 0.9998 g/cm³ at the same temperature.
How does water move in estuaries?
Once or twice a day, high tides create saltwater currents that move seawater up into the estuary.
what is Thermocline
a steep temperature gradient in a body of water such as a lake, marked by a layer above and below which the water is at different temperatures.
What causes the Sofar layer and shadow zones in the ocean?
Specific combinations of temperature, pressure, and salinity may act to create shadow zones, or reflective layers, that are resistant to the propagation of sound waves.
What factors increase dissolved oxygen?
Why the density of water is higher than the density of ice?
in ice the molecules arrange themselves in a rigid tetrahedral structure due to which cage like spaces remain in their bonding.
Why does salinity increase with depth in estuaries?
Because of the depth, mixing of fresh and salt water only occurs near the surface, so in the upper layers salinity increases from the head to the mouth, but the deeper water is of standard ocean salinity.
What is the purpose of thermocline?
Why does sound travel a long way in the SOFAR channel?
because of SOFAR, sound emitted at a certain depth bounces between these various layers and can travel for hundreds of miles
What reduces dissolved oxygen in water?
Why is ice being less dense than water important to life?
What is the number one physical influence of estuaries?
The most influential gradient in estuaries is salinity because many plants and animals require certain salinity levels to survive, reproduce or thrive
What does the term halocline mean?
usually vertical gradient in salinity (as of the ocean)
What effects does the SOFAR channel have on sound?
n this region, pressure, temperature, and salinity combine to inhibit the movement of sound through the water medium.
What happens if dissolved oxygen is too high?
Gas Bubble Disease
At what temperature ice is less dense than water?
As it cools further and freezes into ice
How does density affect water circulation?
Dense water sinks below less dense water.
Where is the thermocline located?
beneath the relatively warm, well-mixed surface layer, from depths of about 200 m (660 feet) to about 1,000 m (3,000 feet),
What affects sound in water?