Evaporation of ocean water and formation of sea ice
both increase the salinity of the ocean. However these “salinity raising” factors are continually counterbalanced by processes that decrease salinity such as the continuous input of fresh water from rivers, precipitation of rain and snow, and melting of ice.
What are three factors that impact ocean salinity?
The factors affecting the amount of salt in different oceans seas are called controlling factors of oceanic salinity.
Evaporation, precipitation, the influx of river water, prevailing winds, ocean currents and sea waves
are significant controlling factors.
What are the factors affecting salinity of sea water?
Salinity of seawater is affected by
evaporation, precipitation, ice formation, and ice melting
. Evaporation increases the salinity of seawater because when seawater evaporates, the salts are left behind, thus increasing their concentration.
What are 2 factors that affect salinity?
Evaporation of ocean water and formation of sea ice
both increase the salinity of the ocean. However these “salinity raising” factors are continually counterbalanced by processes that decrease salinity such as the continuous input of fresh water from rivers, precipitation of rain and snow, and melting of ice.
What is salinity of ocean water?
The concentration of salt in seawater (its salinity) is
about 35 parts per thousand
; in other words, about 3.5% of the weight of seawater comes from the dissolved salts.
What are the factors affecting the temperature of sea water?
The temperature of ocean water varies by location – both in terms of
latitude and depth
, due to variations in solar radiation and the physical properties of water.
What are the controlling factors of salinity?
- (1) Evaporation: …
- (2) Precipitation is inversely related to salinity e.g., higher the precipitation, lower the salinity and vice versa. …
- (3) Influx of river water: …
- (4) Atmospheric pressure and wind direction: …
- (5) Circulation of oceanic water:
What gases are dissolved in the ocean?
Seawater has many different gases dissolved in it, especially
nitrogen, oxygen and carbon dioxide
. It exchanges these gases with the atmosphere to keep a balance between the ocean and the atmosphere. This exchange is helped by the mixing of the surface by wind and waves.
What is considered high salinity?
Salinity is either expressed in grams of salt per kilogram of water, or in parts per thousand (ppt, or ‰). … Depending on their location and source of fresh water, some estuaries can have salinities as
high as 30 ppt
. Seawater is on average 35 ppt, but it can range between 30 – 40 ppt.
How do humans affect salinity?
Human activities can cause salinization
through the use of salt-rich irrigation water
, which can be exacerbated by overexploitation of coastal groundwater aquifers causing seawater intrusion, or due to other inappropriate irrigation practices, and/or poor drainage conditions.
What are 2 factors that can affect chemical composition of seawater?
The physical and chemical properties of seawater vary according to latitude, depth, nearness to land, and input
of fresh water
. Approximately 3.5 percent of seawater is composed of dissolved compounds, while the other 96.5 percent is pure water.
Which ocean has lowest salinity?
The
ocean around Antarctica
has a low salinity of just below 34ppt, and around the Arctic it is down to 30ppt in places.
Which ocean is not salt water?
The
ice in the Arctic and Antarctica
is salt free. You may want to point out the 4 major oceans including the Atlantic, Pacific, Indian, and Arctic. Remember that the limits of the oceans are arbitrary, as there is only one global ocean. Students may ask what are the smaller salty water areas called.
Which is the world’s saltiest water body?
Antarctica’s Don Juan Pond
is the saltiest body of water on the planet.
What is a good water temperature for swimming in the ocean?
When is the water warm enough to swim in? According to the National Oceanographic Data Center,
70-78 degrees
is where most people feel comfortable swimming. I have found that a water temperature of 70-78 degrees is a bit cold for most of us north Texans.
What is temperature of ocean water?
The average temperature of the ocean surface waters is
about 17 degrees Celsius (62.6 degrees Fahrenheit)
. 90 % of the total volume of ocean is found below the thermocline in the deep ocean. The deep ocean is not well mixed. The deep ocean is made up of horizontal layers of equal density.
