volcanism

简明释义

英[ˈvɒlkənɪz(ə)m]美[ˈvɑlkənɪzm]

n. （地质）火山作用（活动或现象）

英英释义

单词用法

同义词

反义词

例句

1.In the late period of basin formation volcanism is weak.

盆地形成后期火山作用微弱。

2.There have also been studies of volcanism, and some eruptions correspond to extinction, but many do not.

也有一些研究火山活动，火山爆发和一些对应的灭绝，但许多人不知道。

3.These events are associated with changes in ocean circulation, solar radiation and volcanism .

这些现象同海洋循环、太阳辐射以及火山活动有关。

4."Volcanism is important because it represents the pulse of the planets," he added.

“火山作用非常重要，因为它代表着行星的脉搏，”他补充道。

5.Atlantic Area: most volcanism are correlated with rift of Atlantic and Africa, and with the active dynamic process in the Mediterranean.

大西洋火山活动区，与大西洋和非洲的裂开，以及地中海带的活动有关。

6.The other islands, which emerged via geological processes such as volcanism, possessed no terrestrial life.

其他岛屿是通过如火山作用的地质作用形成的，没有陆地生命。

7.Venus has a surface that is 90% basalt, indicating volcanism played a major role in shaping its surface.

金星的表面90%是玄武岩，这表明火山运动在其地表形成过程中起了重要作用。

8.Unlike Oceanic islands that were once part of continental landmasses, islands formed by such geological processes as volcanism contain only plants and animals that could be transported there.

与曾经是大陆性陆地的一部分的海洋岛屿不同，由火山作用等地质过程形成的岛屿只包含可以被运输到那里的动植物。

9.At the same time we hoped to learn about processes of volcanism that have rarely been observed before.

同时我们希望弄清过去很少能观察到的火山作用过程。

10.The study of volcanism is crucial for understanding the Earth's geological processes.

对火山活动的研究对于理解地球的地质过程至关重要。

11.In regions with active volcanism, it's important to monitor seismic activity.

在活跃的火山活动地区，监测地震活动是很重要的。

12.Scientists believe that ancient volcanism shaped much of the landscape we see today.

科学家认为，古代的火山活动塑造了我们今天所看到的许多景观。

13.The volcanism on Mars provides clues about the planet's history.

火星上的火山活动为了解这颗行星的历史提供了线索。

14.Many islands in the Pacific are formed due to underwater volcanism.

太平洋中的许多岛屿是由于水下的火山活动而形成的。

作文

Volcanism is a geological phenomenon that refers to the processes and activities associated with the movement of molten rock, or magma, from beneath the Earth's crust to its surface. This movement can lead to the formation of volcanoes, geysers, and hot springs, making it an essential aspect of the Earth's geological activity. Understanding volcanism (火山活动) is crucial for several reasons, including its impact on the environment, climate, and human societies. One of the most significant aspects of volcanism (火山活动) is its role in shaping the Earth's landscape. Volcanoes are often found at tectonic plate boundaries where the Earth's crust is either being pulled apart or pushed together. When the pressure from the accumulated magma becomes too great, it erupts, spewing ash, lava, and gases into the atmosphere. These eruptions can create new landforms, such as islands and mountains, and can also alter existing landscapes dramatically. Moreover, volcanism (火山活动) has a profound effect on the climate. Large volcanic eruptions can release significant amounts of ash and sulfur dioxide into the stratosphere, which can lead to temporary cooling of the Earth's surface by reflecting sunlight away. For instance, the eruption of Mount Pinatubo in 1991 caused global temperatures to drop by about 0.5 degrees Celsius for several years. Such climatic changes can have far-reaching effects on agriculture, ecosystems, and weather patterns. In addition to environmental impacts, volcanism (火山活动) poses risks to human populations. Many of the world's largest cities are located near active volcanoes, making them vulnerable to eruptions. The destruction caused by volcanic eruptions can be catastrophic, leading to loss of life, displacement of communities, and economic disruption. For example, the eruption of Mount Vesuvius in 79 AD buried the Roman cities of Pompeii and Herculaneum, preserving them in time but resulting in thousands of deaths. Despite the dangers, volcanism (火山活动) also brings benefits. Volcanic soils are often very fertile due to the minerals released during eruptions, which can enhance agricultural productivity. Countries like Italy and Indonesia benefit from this fertility, allowing them to sustain large populations through farming. Additionally, geothermal energy, derived from the heat produced by volcanic activity, is a renewable energy source that can provide electricity and heating for communities. Scientists study volcanism (火山活动) to better understand these processes and to predict future eruptions. By monitoring volcanic activity, such as seismic tremors, gas emissions, and ground deformation, researchers can provide early warning systems to help protect lives and property. Advances in technology have improved our ability to observe and analyze volcanoes, making it possible to mitigate some of the risks associated with volcanic eruptions. In conclusion, volcanism (火山活动) is a complex and multifaceted phenomenon that plays a crucial role in shaping our planet. Its effects on the environment, climate, and human societies are profound, highlighting the need for continued research and monitoring. By understanding volcanism (火山活动), we can better prepare for its impacts and harness its benefits, ensuring a safer and more sustainable future for all.