Why do sea swells happen?

Do you know what sea swells are? 

Everyone already knows that the sea itself is the most mysterious point on our planet.

You know that old saying that humans know more about space than we know about our own oceans? It's safe to say that this statement is true.

After all, estimates indicate that humans still have not explored approximately 80% of our oceans. 

And since most of our planet is covered by water – something around 70% – that percentage of 80% is quite significant, right?

But, among the different behaviors that the sea itself has, we already know and are able to understand.

Some attract a lot of attention due to their intensity and the way they affect human life.

And one of the most common on coastlines around the world are sea swells.

But do you know what this phenomenon is? How does it occur, what are the reasons for its formation and how does it affect our lives? 

This and other questions will be answered throughout this content. Here, you will understand more about this phenomenon and what its effects are.

What are sea swells?

Although hangover is a term that we associate only with humans when we talk about the effects of excessive alcohol consumption, sea hangovers also exist.

Sea swells are characterized as the abnormal movements of sea waves on themselves when they are approaching the breaking point.

You know when you're on the coast and the sea is so, so rough that you think twice before diving in?

These are the sea swells.

How do sea swells happen?

Explaining in a more general way, sea swells occur when a very dangerous combination occurs at sea.

This combination consists of intense waves, winds and tides.

Together, these 3 factors are the main causes of storm surges that occur on coastlines around the world.

When does this phenomenon usually occur?

If we analyze the coastlines of the South and Southeast regions of our country, we can say that the incidence of sea swells can occur all year round.

But most commonly this type of phenomenon occurs during two very different seasons of the year: winter and spring.

This is because, during these seasons, the formation of extratropical cyclones ends up becoming more frequent.

What are the reasons for the formation of sea swells?

When it comes to this type of agitation caused by sea swells, one of the main points is what causes this type of phenomenon.

In the vast majority of cases, this type of event is related to major storms.

When these storms are accompanied by strong winds – as in cases of cold fronts, for example – and occur close to the coast, this type of atypical sea movement ends up happening.

Another type of combination that can result in the presence of this phenomenon is the presence of strong storms and strong winds caused by tropical, subtropical and extratropical cyclones.

In both combinations mentioned here, the result is an unusual rise in sea level and, along with this, the occurrence of higher waves than normal for that location.

How do sea swells affect human life?

As already mentioned in the text, the main characteristic that defines this phenomenon is all the agitation. And this behavior causes the sea to end up posing risks to human life in several ways.

In addition to the risk of drowning caused by all this excitement, sea swells also put vessels and their potential crew members at risk.

Once on dry land, the risks are especially for residents of coastal areas where this type of phenomenon occurs. 

With the sea more agitated due to these storm surges, the risks of flooding and coastal erosion – erosion caused by the action of sea water – are even greater, worrying residents of regions facing this phenomenon.

What is the relationship between sea swells and climate change? 

For laymen, the two phenomena may seem disconnected from each other, but they are both related.

And this relationship can put our lives in increasing danger.

As the damage caused by humans to our planet worsens and climate change becomes more and more intense, these phenomena tend to become stronger and more frequent.

This is because, as time passes, the winds tend to become stronger, increasing the intensity of the waves during sea swells.

And, in addition to all this, the rise in sea level also poses an additional risk in the event of storm surges.

After all, the higher the sea level, the greater its reach and destructive power during a storm surge.

And this ends up putting at risk almost 100% of the coastal population of all countries in the world, such as Brazil.

Conclusion 

So, did you understand a little more about how sea swells work?

As you can see, this type of phenomenon can be quite dangerous and destructive for buildings located in coastal regions.

And these sea swells only serve to show that we are living in times of great tension due to climate change.

Phenomena like this show us all the power that nature has and how we, as human beings, can be extremely fragile in the face of its actions.

And to finish our content, the tip is: if you notice that the tide is rising or that the sea is starting to get too rough, leave the dive for later.

As you have seen here, the sea is no joke during storm surges.

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