Why are sea levels rising?
Sea levels are currently rising for two main reasons.
- Water in the oceans is expanding. This is the first and by far the greatest reason, due to the rising average world temperature.
- Melting of the ice caps and glaciers. The second and more minor reason at the moment is due to this melting putting more water into the oceans.
This causes two major issues associated with sea-level rise.
- One, the polar ice caps, mountainous glaciers and snow sources begin to melt at a faster rate than before and are replaced at a slower rate.
- Second is that as the globe warms up all of the sea water will start to expand, So more water is being added through melting while the existing water is expanding.
This has resulted in predictions of 15-88 cm sea level rise over the next 10 years. That may not seem a lot, but many countries will be affected. Bangladesh and Holland are good examples. Much of their land has been reclaimed from the sea and currently sits either lower than sea level or within the 88 cm rise threshold. If the 88 cm rise is true, somewhere in the region of 5 million in Bangladesh alone stand to either lose their lives or be living in the sea.
A: Global warming
Sea levels are rising because the polar ice caps are melting and glaciers are receding, due (in most scientific opinion) to global warming.
A: The main reason for the sea levels rising is Global Warming.
This is when the polar ice caps in Antarctica and other places melt, and the ice is changed into water, which is done so in HUGE amounts at a time. Global Warming is melting the ice caps because the carbon emissions (outputs of petrol fumes, carbon dioxide into our atmosphere etc) are building up in the atmosphere. This is changing the natural greenhouse effect, which keeps us warm, into an enhanced greenhouse effect, which is causing global warming.
There are clearly noticeable temperature changes in the weather. Global Warming make the world hotter, therefore the Polar Ice caps melt faster, leading to the rising of the sea levels.
the greenhouse effect is causing the glaciers to melt which is make the sea levels rise.
Global warming causes glaciers to melt; the resulting water flows into the ocean and raises its level.
Due to increased amounts of greenhouse gases in the atmosphere (this is a result of the burning of fossil fuels as well as volcanic activity which also releases greenhouse gases), it is more difficult for the sun's rays to escape the Earth's atmosphere (this is due to the greenhouse gases acting as a 'blanket').
A consequence of this is that the temperature increases and the ice caps, as well as other stores of ice, melt at a faster rate. Therefore, there are higher volumes of water in liquid state which eventually reach the ocean and cause the sea levels to rise.
Global warming is actually a natural process as before the industrial revolution, greenhouse gases were still produced through cattle farming and volcanic activity. Nowadays global warming is amplified by human activity.
Well, if you are talking about the sydney opera house, then here is the answer; There are many problems at the moment, but people are scared because of the rising sea levels. There is a threat posed where the sydney opera house could sink because of the rising sea levels. And to stop the rising sea levels is to stop global warming, which, we all know, is very hard.
What are the reasons for the sea levels rising faster in the east of the UK where many lowlands are located?
Sea levels in southern and eastern England are rising faster than other parts of the world because the land itself is sinking. In contrast sea levels in northern UK will be lower because the land there is still rising. Glaciers there more than 10,000 years ago forced the land down with their great weight of ice. When the ice melted the land slowly began rising again, and it's still rising.
Days will get shorter The weather channel has been showing the Ocean levels rising because of ice melting in the poles?
As the world warms as a result of the increasing level of atmospheric carbon dioxide, so the ocean water warms. As water warms it expands, causing global sea levels to rise. Another cause of rising sea levels is the melting of glaciers and ice caps, releasing water into the ocean. Overall, sea levels have risen 20 centimetres in the last century, and are now predicted to rise by 90 to 150 centimetres during the twenty-first…
Sea levels are rising mainly because warm water expands, and the oceans have been warming steadily over the past 40 years. Melting land ice is also adding to rising sea levels. A common error in climate debate is to focus on short term data instead of looking at long time trends. All sea level graphs (as well as temperature graphs) zig zag up and down. Some years sea levels go down, and the oceans cool…
If sea levels are rising this can be caused by two things: Extra water added to the oceans. This can only come from land ice melting. Ocean water expanding as it gets warmer. We know that sea levels are rising because our satellites measure this. This therefore supports the theory of global warming.
ALL countries and islands with Borders at Sea Level are as you say at risk. Pacific Island countries such as Kiribati, as well as heavily populated sea level coastlands of Bangladesh are at serious risk. Cities like New Orleans, Bangkok, Venice, London and many other coastal cities will suffer from rising sea levels.