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CNN 国际新闻
📌 标题：One of the planet’s biggest cities is sinking so rapidly it’s visible from space
📅 发布时间：Updated May 5, 2026, 12:07 PM ET
📝 英文原文：
Mexico City is sinking at such an alarming rate that it’s visible from the space. Imagery from a powerful NASA radar system is revealing subsidence rates of more than 0.5 inches a month — making the city one of the planet’s fasting-sinking capitals.The sprawling metropolis, also one of the world’s biggest cities, stretches out across a high-altitude lake and sits atop an ancient aquifer, which provides around 60% of drinking water for the city’s 22 million residents.Over the years, this aquifer has been so over-pumped that it’s caused the land above it to subside. Over-extraction has also contributed to a chronic water crisis that has left the Mexico Cityfacing a potential day zero, where taps run dry.The city’s rapid sinking has been exacerbated by relentless urban development, with new infrastructure adding extra weight on top of the clay-rich soil.⛅ Get CNN Weather in your inboxThe forecast is just the beginning. We’ll send you expert coverage and the stories behind the weather — so you always know more than just the number.Sign up for the newsletterMexico City’s subsidence was first documented in the 1920s, and in the years since, residents have experienced the impacts, with fractured roads, tilted buildings and damage to the train system.New imagery from the NISAR satellite, a project between NASA and the Indian Space Research Organization, reveals the extent of the problem in startling detail.NISAR was designed to map some of the planet’s most complex processes and is able to track subtle motions such as land sinking. It’s one of the most powerful radar systems ever launched into space,according to NASA.New data from NISAR shows parts of Mexico City subsided by roughly 0.8inches per month (shown in blue) between October 25, 2025, and January 17, 2026. Uneven and seemingly small elevation changes have added up over the decades, fracturing roads, buildings and water lines.David Bekaert/JPL-Caltech/NASABetween October 2025 and January 2026, during Mexico City’s d
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🇨🇳 中文翻译：
墨西哥城正在以惊人的速度下沉，从太空中都可以看到。来自美国宇航局强大雷达系统的图像显示，每月下沉速度超过 0.5 英寸，使这座城市成为地球上正在快速下沉的首都之一。这座庞大的大都市也是世界上最大的城市之一，横跨一个高海拔湖泊，坐落在一个古老的含水层之上，该含水层为该市 2200 万居民提供了约 60% 的饮用水。多年来，这个含水层
🔗 原文链接：阅读全文
本文由自动抓取系统生成，英文原文已自动翻译为中文。 |
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