Which one of the following is the cause of long-term sea-level change?...
Long-term sea-level change
Long-term sea-level change refers to the gradual rise or fall of the average sea level over an extended period of time, typically spanning decades or centuries. This phenomenon is influenced by various factors, including geological processes, climate change, and human activities. Among the options provided, the melting of ice sheets is the primary cause of long-term sea-level change.
Explanation:
Melting of ice sheets:
- Ice sheets are massive bodies of ice that form over land, such as the Greenland Ice Sheet and the Antarctic Ice Sheet.
- As global temperatures rise due to climate change, these ice sheets experience increased melting.
- The melted icewater flows into the oceans, contributing to the overall volume of seawater.
- This additional water causes a gradual rise in sea levels, leading to long-term sea-level change.
Atmospheric disturbance:
- Atmospheric disturbances, such as storms and hurricanes, can cause short-term fluctuations in sea levels.
- However, these disturbances do not have a significant impact on long-term sea-level change.
Change in marine water density:
- Changes in marine water density, such as variations in salinity and temperature, can affect local sea levels.
- However, these variations do not contribute significantly to long-term sea-level change on a global scale.
Melting of icebergs:
- Icebergs are large masses of ice that float in the ocean.
- When icebergs melt, they release freshwater into the surrounding seawater.
- While the melting of icebergs can contribute to rising sea levels in localized areas, it does not have a major influence on long-term sea-level change globally.
Therefore, the melting of ice sheets is the primary cause of long-term sea-level change. As the world continues to experience climate change and rising global temperatures, the melting of ice sheets will continue to contribute to the gradual rise in sea levels, posing significant challenges for coastal communities and ecosystems.
Which one of the following is the cause of long-term sea-level change?...
- The cause of long-term sea level change is the melting of the ice sheet.
- The increase in the temperature of the earth can increase the level of sea water for many reasons including melting of icebergs and expansion due to warming of sea water.
IMPORTANT FACTS-:
Rise in sea level-:
- Sea level rise is the rise in the water level of the world's oceans due to the effects of climate change.
Specifically global warming which is driven by three primary factors:
- thermal expansion,
- Glaciers
- Greenland and Antarctica Ice Melting
Melting of Glaciers-:
- Mountain glaciers melt more in summer due to higher temperatures as a result of global warming.
- This creates an imbalance between runoff and ocean evaporation, leading to sea level rise.
Damage to Greenland and Antarctic ice sheets-:
- The increased heat is causing the vast ice sheets that cover Greenland and Antarctica to melt more rapidly, like mountain glaciers, and more rapidly rising sea water.
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