Volcano belches ash over Chile | Space photo of the day for Nov. 10, 2025

智利火山喷发，火山灰弥漫| 2025年11月10日当天的太空照片

On Oct. 25, 2025, Europe's Sentinel‑2 satellite mission captured a striking image of the Planchón-Peteroa volcanic complex, located on the border between Chile and Argentina, emitting a plume of ash and volcanic gas rising roughly 1,970 feet (600 meters) above the crater. The ash plume drifted north‐northwest initially and then, under changing wind conditions, veered eastward across the Argentine side.

2025年10月25日，欧洲的哨兵-2号卫星任务拍摄到一幅震撼画面：位于智高度约达1,970英尺 (600米)。火山灰最初向西北方向飘散，后受风向变化影响，转向东漂至阿根廷境内。

The Sentinel-2 satellites, developed and operated by the European Space Agency, use high-resolution optical imaging to monitor land surfaces, coastal zones and inland waters.

“哨兵-2号”卫星由欧洲空间局研发并运营，采用高分辨率光学成像技术，用于监测陆地表面、海岸带与岛屿水域。

There are currently three Sentinel-2 satellites in orbit — Sentinel-2A, Sentinel-2B and Sentinel-2C, which launched in 2015, 2017 and 2024, respectively. They're part of the European Union's Copernicus Earth-observation program, whose first satellite (Sentinel-1A) launched in 2014.

目前在轨运行的“哨兵-2号”卫星共有3颗，分别是哨兵-2A、哨兵-2B与哨兵-2C，发射时间依次为2015年、2017年与2024年。它们是欧盟“哥白尼地球观测计划”的一部分，该计划的首颗卫星（哨兵-1A）于2014年发射。

The Planchón-Peteroa complex sits in the Andes mountain range, at a high altitude in a region dominated by snow‐covered peaks and volcanic terrain.

普兰琼-佩特罗阿火山群地处安第斯山脉，位于高海拔区域，周边以积雪覆盖的山峰与火山地貌为主。

Because the Planchón-Peteroa volcanic complex is remote, rugged and spans two countries, satellite imagery plays a vital role in monitoring volcanic activity, ash dispersal and potential impacts on air pollution, local communities and the environment. The snow-covered ground enhances the visibility of the ash plume as it drifts across the landscape, allowing for better tracking by the ESA satellite.

由于普兰琼-佩特罗阿火山群位置偏远、地形崎岖且横跨两国，卫星成像技术在监测火山活动、火山灰扩散，以及其对空气污染、当地社区与环境的潜在影响方面发挥着关键作用。积雪覆盖的地面提升了火山灰烟柱的可见度，便于欧空局卫星更好地追踪其动向。

With the ash crossing from Chile into Argentina, the image shows how volcanic events do not respect national boundaries — and international monitoring systems like Copernicus are key.

从这幅图像可以看到，火山灰从智利飘向阿根廷——这体现出火山活动不受国界限制，而像哥白尼这样的国际监测系统也因此至关重要。

You can learn more about the European Space Agency and the Copernicus program.

您可以了解有关欧洲航天局和哥白尼计划的更多信息。