continental ice-sheet

简明释义

1. 大陆冰原; 2. 大陆冰盖;

英英释义

例句

1.The continental ice-sheet 大陆冰盖 in Greenland is one of the largest ice masses on Earth.

格林兰的大陆冰盖是地球上最大的冰体之一。

2.As temperatures rise, the stability of the continental ice-sheet 大陆冰盖 is increasingly at risk.

随着温度上升，大陆冰盖的稳定性正面临越来越大的风险。

3.The melting of the continental ice-sheet 大陆冰盖 in Antarctica is a significant concern for global sea levels.

南极的大陆冰盖正在融化，这对全球海平面构成了重大威胁。

4.Researchers have found that the continental ice-sheet 大陆冰盖 is losing mass at an alarming rate.

研究人员发现，大陆冰盖以惊人的速度失去质量。

5.Scientists are studying the effects of climate change on the continental ice-sheet 大陆冰盖 to predict future sea level rise.

科学家们正在研究气候变化对大陆冰盖的影响，以预测未来的海平面上升。

作文

The Earth is a dynamic planet, constantly undergoing changes that affect its climate and geography. One of the most significant features of our planet is the presence of large ice masses known as continental ice-sheets (大陆冰盖). These massive sheets of ice cover vast areas of land and play a crucial role in regulating global temperatures and sea levels. Understanding the formation, characteristics, and implications of continental ice-sheets is essential for comprehending the broader aspects of climate change and its effects on our environment.Continental ice-sheets are formed primarily in polar regions where temperatures remain consistently low, allowing snow to accumulate over thousands of years. This accumulation compresses the lower layers of snow into dense ice. The two largest current examples of continental ice-sheets are found in Antarctica and Greenland. The Antarctic Ice Sheet is the largest single mass of ice on Earth, containing about 60 percent of the world's fresh water. Similarly, the Greenland Ice Sheet, while smaller, still holds a significant portion of the Earth's ice reserves.The thickness of continental ice-sheets can vary dramatically, with some areas reaching several kilometers in depth. This immense weight causes the land beneath to depress, creating a unique topography. The movement of these ice sheets is not static; they flow slowly due to gravity, and their edges can calve off into the ocean, forming icebergs. This process is part of the natural cycle of the continental ice-sheets, but it has been accelerated by rising global temperatures.As the climate warms, we witness alarming rates of melting in the continental ice-sheets. This melting contributes to rising sea levels, which poses a threat to coastal communities around the world. For instance, scientists estimate that if the Greenland Ice Sheet were to melt completely, it could raise global sea levels by about seven meters. Such a rise would inundate many major cities and displace millions of people, leading to significant economic and social challenges.Moreover, the melting of continental ice-sheets also impacts global climate patterns. Ice reflects sunlight, helping to keep the planet cool; when it melts, darker ocean or land surfaces are exposed, which absorb more heat. This feedback loop exacerbates global warming, leading to further ice loss. Therefore, monitoring the health of continental ice-sheets is vital for predicting future climate scenarios.In addition to their impact on sea levels and climate, continental ice-sheets are also critical indicators of environmental change. Scientists study ice cores extracted from these sheets to gain insights into past climate conditions. By analyzing air bubbles trapped within the ice, researchers can reconstruct historical atmospheric compositions and temperatures, providing valuable data on how our planet's climate has evolved over time.In conclusion, continental ice-sheets are not merely frozen landscapes; they are integral components of the Earth's climate system. Their ongoing changes have profound implications for global sea levels, climate patterns, and our understanding of historical climate variations. As we face the challenges of climate change, it is imperative that we continue to study and protect these vital ice reserves to ensure a stable and sustainable future for our planet.

地球是一个动态的星球，正在不断经历影响其气候和地理的变化。我们星球上最显著的特征之一是存在着被称为大陆冰盖（continental ice-sheets）的巨大冰块。这些巨大的冰层覆盖着广阔的陆地区域，并在调节全球温度和海平面方面发挥着至关重要的作用。理解大陆冰盖的形成、特征及其影响，对于理解气候变化及其对环境的影响至关重要。大陆冰盖主要形成于极地地区，在这些地区，温度始终保持在较低水平，使得雪可以在数千年内积累。这种积累将下层的雪压缩成致密的冰。目前最大的两个大陆冰盖分别位于南极洲和格林兰。南极冰盖是地球上最大的单一冰体，约占世界淡水的60%。同样，虽然格林兰冰盖较小，但仍然保留着相当一部分地球的冰储备。大陆冰盖的厚度可以有很大差异，有些地区的厚度可达几公里。这种巨大的重量导致下面的土地下沉，形成独特的地形。这些冰盖的运动并不是静态的；它们因重力缓慢流动，边缘会崩解入海洋，形成冰山。这一过程是大陆冰盖自然循环的一部分，但由于全球气温上升，这一过程已经加速。随着气候变暖，我们目睹了大陆冰盖融化的惊人速度。这种融化导致海平面上升，对全球沿海社区构成威胁。例如，科学家估计，如果格林兰冰盖完全融化，全球海平面可能会上升约七米。如此高的海平面将淹没许多主要城市，并使数百万人流离失所，导致重大的经济和社会挑战。此外，大陆冰盖的融化还会影响全球气候模式。冰层反射阳光，有助于保持地球凉爽；当它融化时，较暗的海洋或陆地表面暴露出来，吸收更多的热量。这一反馈循环加剧了全球变暖，导致进一步的冰层损失。因此，监测大陆冰盖的健康状况对于预测未来的气候情景至关重要。除了对海平面和气候的影响外，大陆冰盖也是环境变化的重要指标。科学家从这些冰盖中提取冰芯，以获取过去气候条件的见解。通过分析冰中捕获的气泡，研究人员可以重建历史大气成分和温度，为我们提供有关地球气候如何随时间演变的宝贵数据。总之，大陆冰盖不仅仅是冻结的景观；它们是地球气候系统的重要组成部分。它们的持续变化对全球海平面、气候模式以及我们对历史气候变化的理解具有深远的影响。面对气候变化的挑战，我们必须继续研究和保护这些重要的冰储备，以确保我们星球的稳定和可持续的未来。