ice sheet

简明释义

冰原

英英释义

例句

1.The thickness of the Antarctic ice sheet 冰盖 can exceed several kilometers in some areas.

在某些地区，南极ice sheet 冰盖的厚度可以超过几公里。

2.The ice sheet 冰盖 in Antarctica is the largest single mass of ice on Earth.

南极的ice sheet 冰盖是地球上最大的单一冰块。

3.Satellite imagery helps researchers monitor changes in the ice sheet 冰盖 over time.

卫星图像帮助研究人员监测ice sheet 冰盖随时间的变化。

4.The collapse of the West Antarctic ice sheet 冰盖 could lead to significant increases in sea level.

西南极ice sheet 冰盖的崩溃可能导致海平面显著上升。

5.Scientists are studying how the melting of the Greenland ice sheet 冰盖 affects global sea levels.

科学家们正在研究格林兰ice sheet 冰盖的融化如何影响全球海平面。

作文

The Earth's climate is a dynamic system that has undergone significant changes over millions of years. One of the most striking features of our planet is the presence of large expanses of ice known as ice sheets (冰盖). These massive formations are primarily found in Antarctica and Greenland, covering vast areas and playing a crucial role in regulating global temperatures. Understanding ice sheets (冰盖) is essential for grasping the implications of climate change and its potential impacts on sea levels.An ice sheet (冰盖) is defined as a thick layer of ice that covers more than 50,000 square kilometers of land area. The Antarctic and Greenland ice sheets are the largest and most well-known examples. These sheets are composed of layers of snow that have compacted over time into dense ice. As the climate warms, these ice sheets (冰盖) are melting at an alarming rate, contributing to rising sea levels. This phenomenon poses a significant threat to coastal communities around the world.The melting of ice sheets (冰盖) is not just a local issue; it has global ramifications. When ice sheets (冰盖) melt, they release fresh water into the oceans, which can disrupt ocean currents and affect weather patterns. Additionally, the loss of these massive ice bodies contributes to the overall rise in sea level, which can lead to flooding in low-lying areas. Scientists estimate that if the Greenland ice sheet were to melt completely, it could raise global sea levels by about seven meters, while the complete melting of the Antarctic ice sheet could raise sea levels by over 60 meters.Moreover, ice sheets (冰盖) are critical indicators of climate change. Researchers monitor their mass balance, which is the difference between the amount of snow that accumulates and the amount that melts or breaks off into the ocean. A negative mass balance indicates that a ice sheet (冰盖) is losing more ice than it gains, which is currently the case for both the Greenland and Antarctic ice sheets. This trend is alarming and suggests that we may be approaching a tipping point in the climate system.In addition to their impact on sea levels, ice sheets (冰盖) also play a vital role in Earth’s albedo effect, which is the reflection of sunlight back into space. Ice surfaces reflect sunlight, helping to keep the planet cool. However, as ice sheets (冰盖) continue to melt, darker ocean waters are exposed, which absorb more heat and further accelerate warming. This feedback loop is a concerning aspect of climate change that researchers are actively studying.In conclusion, ice sheets (冰盖) are not merely frozen landscapes; they are critical components of the Earth’s climate system. Their health is directly tied to global temperatures and sea levels. As we face the challenges of climate change, understanding the dynamics of ice sheets (冰盖) becomes increasingly important. We must take action to mitigate climate change and protect these vital ice reserves to ensure a stable climate for future generations.

地球的气候是一个动态系统，在数百万年中经历了显著变化。我们星球上最引人注目的特征之一是存在着大面积的冰层，称为ice sheets（冰盖）。这些巨大的冰层主要分布在南极洲和格林兰，覆盖了广阔的区域，并在调节全球温度方面发挥着至关重要的作用。理解ice sheets（冰盖）对把握气候变化的影响及其对海平面的潜在影响至关重要。ice sheets（冰盖）被定义为覆盖超过50,000平方公里陆地面积的厚厚冰层。南极和格林兰冰盖是最大且最著名的例子。这些冰层由随时间推移而压缩成致密冰的雪层组成。随着气候变暖，这些ice sheets（冰盖）以惊人的速度融化，导致海平面上升。这一现象对世界各地的沿海社区构成了重大威胁。ice sheets（冰盖）的融化不仅是一个地方性问题；它具有全球影响。当ice sheets（冰盖）融化时，它们将淡水释放到海洋中，这可能会干扰海洋洋流并影响天气模式。此外，这些巨大的冰体的丧失也导致了海平面的整体上升，这可能导致低洼地区的洪水。科学家们估计，如果格林兰冰盖完全融化，全球海平面可能会上升约七米，而南极冰盖完全融化则可能使海平面上升超过60米。此外，ice sheets（冰盖）是气候变化的重要指示器。研究人员监测它们的质量平衡，即积累的雪量与融化或断裂入海的冰量之间的差异。负质量平衡表明ice sheets（冰盖）失去的冰比获得的多，目前格林兰和南极冰盖都是这种情况。这一趋势令人担忧，表明我们可能接近气候系统的临界点。除了对海平面的影响，ice sheets（冰盖）在地球的反照率效应中也扮演着关键角色，反照率效应是指阳光反射回太空。冰面反射阳光，有助于保持地球凉爽。然而，随着ice sheets（冰盖）的持续融化，较暗的海洋水域暴露出来，吸收更多热量，进一步加速变暖。这个反馈循环是气候变化中一个令人担忧的方面，研究人员正在积极研究。总之，ice sheets（冰盖）不仅仅是冰冻的景观；它们是地球气候系统的重要组成部分。它们的健康直接与全球温度和海平面相关。面对气候变化的挑战，理解ice sheets（冰盖）的动态变得越来越重要。我们必须采取行动来减缓气候变化，保护这些重要的冰储备，以确保未来几代人拥有稳定的气候。