SAEDNEWS: The salinity of seawater has always been one of its most distinctive features and has intrigued humans for ages. But why is seawater salty? Join us on this journey to uncover the answer.
Erosion of Rocks: Rain, snow, and hail on land cause rock erosion, dissolving the minerals within. This mineral-rich water gradually flows into the seas through rivers.
Volcanic Activity: Volcanic eruptions under the sea or on land release large amounts of minerals and gases into the oceans. Some of these, like sodium chloride (table salt), dissolve in the water.
Hydrothermal Vents: Deep in the oceans, there are vents that discharge hot water and minerals from within the Earth. Some of these minerals, including salts, dissolve into the seawater.
Sunlight causes seawater to evaporate, but the salt remains behind. Over time, continuous evaporation increases the salt concentration in the seawater.
The average salinity of seawater is about 35 grams per liter, meaning there are 35 grams of salt for every liter of seawater. This amounts to 3.5% of the seawater's weight.
Seawater salinity plays a crucial role in the marine ecosystem. It is essential for many marine organisms and helps regulate water temperature, buoyancy, and various biological processes.
Seawater salinity can vary across different ocean regions and over time. Factors such as evaporation, rainfall, ocean currents, and ice melting can influence seawater salinity.
Seawater salinity makes it undrinkable for humans. Consuming large amounts of saltwater can lead to salt poisoning and health problems. However, humans use seawater for various purposes, including salt production, mineral extraction, and energy generation.
In conclusion, the salinity of seawater results from complex processes that have occurred over millions of years on Earth. This salinity plays a vital role in the marine ecosystem and has various impacts on human activities.
