secular variation

简明释义

长期变化

英英释义

例句

1.Geologists are studying the secular variation 世俗变化 in sea levels over the last century.

地质学家正在研究过去一个世纪海平面的secular variation 世俗变化。

2.The study of the Earth's magnetic field reveals significant secular variation 世俗变化 over the millennia.

对地球磁场的研究揭示了数千年来显著的secular variation 世俗变化。

3.Researchers are analyzing the secular variation 世俗变化 in climate patterns to predict future weather trends.

研究人员正在分析气候模式中的secular variation 世俗变化以预测未来的天气趋势。

4.The secular variation 世俗变化 in population demographics can impact local economies.

人口统计中的secular variation 世俗变化可能影响地方经济。

5.Astronomers have noted the secular variation 世俗变化 in the orbits of certain celestial bodies.

天文学家注意到某些天体轨道的secular variation 世俗变化。

作文

In the study of geology and climatology, the term secular variation refers to long-term changes that occur over extended periods, typically spanning decades to centuries. These variations can significantly impact the Earth's climate, geological formations, and even biological evolution. Understanding secular variation is crucial for scientists as it helps them distinguish between short-term fluctuations, such as seasonal weather patterns, and more enduring trends that shape the planet's future.One of the most prominent examples of secular variation is seen in the Earth's climate system. Over the past few centuries, the planet has experienced significant warming trends, often attributed to human activities such as industrialization and deforestation. This long-term warming is a classic case of secular variation, as it represents a gradual but profound change in the Earth's climate that cannot be explained by short-term weather events alone. By analyzing historical climate data, researchers can identify patterns of secular variation and make predictions about future climate scenarios, which are essential for developing effective environmental policies.Another area where secular variation plays a critical role is in the study of magnetic fields. The Earth's magnetic field is not static; it experiences fluctuations over time due to various geological processes. These changes can be classified as secular variation, as they occur over lengthy periods and can influence navigation systems, animal migration patterns, and even the stability of satellites in orbit. Scientists monitor these variations to understand better the underlying mechanisms driving them and their potential impacts on technology and wildlife.In addition to climate and magnetic fields, secular variation is also relevant in biology. Evolutionary biologists study how species adapt to long-term environmental changes, which often result from secular variation. For instance, the gradual shift in climate zones can lead to changes in habitat availability, forcing species to migrate or evolve new traits to survive. Understanding these long-term trends allows scientists to predict how current species might respond to ongoing environmental changes, especially in the face of rapid climate change.Moreover, the implications of secular variation extend beyond scientific research; they also have practical applications in agriculture, urban planning, and disaster management. For example, farmers must consider long-term climate trends when deciding what crops to plant and when to harvest. Urban planners need to account for potential secular variation in sea levels and weather patterns to design resilient infrastructure that can withstand the test of time.In conclusion, secular variation is a fundamental concept in various scientific disciplines, providing insights into the long-term changes that shape our world. By studying these variations, researchers can better understand the past, anticipate future changes, and devise strategies to mitigate the negative impacts of those changes. Whether it is through understanding climate patterns, magnetic field fluctuations, or biological adaptations, recognizing the importance of secular variation is essential for both scientific inquiry and practical decision-making in an ever-changing world.

在地质学和气候学的研究中，术语世俗变化指的是在较长时间内发生的变化，通常跨越数十年到数百年。这些变化可以显著影响地球的气候、地质形成，甚至生物进化。理解世俗变化对科学家至关重要，因为它帮助他们区分短期波动（如季节性天气模式）和更持久的趋势，这些趋势塑造了地球的未来。世俗变化的一个显著例子在于地球的气候系统。在过去几个世纪，地球经历了显著的变暖趋势，通常归因于人类活动，如工业化和森林砍伐。这种长期变暖是世俗变化的经典案例，因为它代表了地球气候的渐进但深刻的变化，不能仅通过短期天气事件来解释。通过分析历史气候数据，研究人员可以识别世俗变化的模式，并预测未来的气候情景，这对制定有效的环境政策至关重要。世俗变化还在磁场研究中发挥着关键作用。地球的磁场并不是静态的；由于各种地质过程，它会随着时间而波动。这些变化可以被归类为世俗变化，因为它们发生在较长时间内，并可能影响导航系统、动物迁徙模式，甚至轨道上卫星的稳定性。科学家们监测这些变化，以更好地理解驱动它们的潜在机制及其对技术和野生动物的潜在影响。除了气候和磁场，世俗变化在生物学中也具有相关性。进化生物学家研究物种如何适应长期环境变化，这通常是由于世俗变化造成的。例如，气候区的逐渐变化可能导致栖息地可用性的变化，迫使物种迁移或进化出新的特征以生存。理解这些长期趋势使科学家能够预测当前物种可能如何应对正在进行的环境变化，尤其是在快速气候变化的情况下。此外，世俗变化的影响超出了科学研究；它们在农业、城市规划和灾害管理中也具有实际应用。例如，农民在决定种植什么作物以及何时收获时必须考虑长期气候趋势。城市规划者需要考虑海平面和天气模式的潜在世俗变化，以设计能够经受时间考验的韧性基础设施。总之，世俗变化是多个科学学科中的基本概念，为我们塑造世界的长期变化提供了见解。通过研究这些变化，研究人员可以更好地理解过去，预测未来变化，并制定减轻这些变化负面影响的策略。无论是通过理解气候模式、磁场波动还是生物适应，认识到世俗变化的重要性对于科学探究和在不断变化的世界中做出实际决策都是至关重要的。