equatorial bulge

简明释义

地球赤道直径比两极直径超过额

英英释义

例句

1.The equatorial bulge affects satellite orbits, requiring adjustments for accurate positioning.

赤道隆起影响卫星轨道，需要进行调整以确保准确定位。

2.Scientists study the equatorial bulge to better understand the Earth's gravitational field.

科学家研究赤道隆起以更好地理解地球的引力场。

3.Due to the equatorial bulge, the distance from the center of the Earth to the equator is greater than to the poles.

由于赤道隆起，从地球中心到赤道的距离大于到两极的距离。

4.The Earth's rotation causes the planet to have an equatorial bulge, which is the result of centrifugal force acting on its mass.

地球的自转导致地球有一个赤道隆起，这是离心力作用于其质量的结果。

5.Geodesists take the equatorial bulge into account when measuring land elevations.

大地测量学家在测量土地高度时会考虑赤道隆起。

作文

The Earth is not a perfect sphere; rather, it has a slightly flattened shape at the poles and a bulge at the equator. This phenomenon is known as the equatorial bulge (赤道隆起). The equatorial bulge is primarily caused by the rotation of the Earth. As the planet spins on its axis, centrifugal force pushes outward at the equator, resulting in a slight expansion. This effect is most pronounced at the equator, where the Earth's diameter is about 43 kilometers (27 miles) larger than that at the poles.Understanding the equatorial bulge is crucial for various scientific fields, including geology, oceanography, and astronomy. For instance, geologists study the equatorial bulge to understand how the Earth's shape affects tectonic activity. The distribution of mass due to the bulge can influence seismic activity and the formation of mountains. Similarly, oceanographers consider the equatorial bulge when studying ocean currents and sea level variations. The bulge affects how water is distributed across the planet, leading to differences in sea level that can impact coastal communities.In astronomy, the equatorial bulge plays a significant role in satellite positioning and navigation. Satellites in low Earth orbit must account for the bulge when calculating their trajectories. If engineers do not consider the equatorial bulge, satellites may drift off course, leading to potential communication failures or data inaccuracies. Thus, understanding this phenomenon is vital for the successful operation of modern technology.The equatorial bulge also has implications for climate science. The uneven distribution of mass caused by the bulge influences atmospheric circulation patterns. These patterns, in turn, affect weather systems and climate zones around the globe. For example, the bulge contributes to the trade winds, which are essential for regulating temperatures and precipitation in tropical regions.Moreover, the equatorial bulge can affect global positioning systems (GPS). Since GPS relies on precise measurements of distance and position, any discrepancies caused by the Earth's shape can lead to errors in location data. Engineers and scientists must take the equatorial bulge into account to ensure the accuracy of GPS technology, which millions of people rely on daily.In conclusion, the equatorial bulge (赤道隆起) is a fundamental aspect of the Earth's shape that has far-reaching effects across various disciplines. From geology and oceanography to astronomy and climate science, understanding the equatorial bulge is essential for comprehending our planet's dynamics. As we continue to explore and study Earth, recognizing the significance of the equatorial bulge will enhance our knowledge and improve our ability to address global challenges.