Plate Nº 57 · recorded September 29, 2026
Space & AstronomyReported finding
US-India Satellite Watches a Sleeping Kamchatka Volcano Wake
A magnitude 8.8 quake near Kamchatka appears to have jolted the 500-year-dormant volcano Krasheninnikov awake. The NASA-ISRO radar satellite NISAR is tracking its growing lava field from orbit.
By Marcus Bennett3 min read562 words
In brief
- A magnitude 8.8 earthquake struck the ocean near Kamchatka on July 30, 2025; the volcano Krasheninnikov began erupting days later.
- The eruption is the first at Krasheninnikov in nearly 500 years; lava is flowing steadily eastward from the northern crater.
- The NASA-ISRO Synthetic Aperture Radar (NISAR) mission is tracking the growing lava field through clouds and darkness using radar imagery.
A joint American-Indian satellite has captured a time-lapse view of a volcanic eruption on Russia's Kamchatka Peninsula — an event that appears to have been triggered by one of the strongest earthquakes recorded in recent years.
The volcano at the center of the story is Krasheninnikov, a pair of adjacent volcanic peaks sitting on the Pacific coast of Kamchatka, a remote and volcanically active region in the Russian Far East. On July 30, 2025, a magnitude 8.8 earthquake struck in the nearby ocean. A few days afterward, the northern member of the volcano pair began erupting for the first time in nearly five centuries.
Since then, lava has been spilling steadily from the northern crater, spreading outward in branching, finger-like patterns — resembling, as observers described it, tendrils on a vine — and flowing toward the east. The molten rock and volcanic debris are building a growing lava field across the landscape.
Tracking those changes from space is the job of the NASA-ISRO Synthetic Aperture Radar mission, known as NISAR. The mission, built and operated jointly by the U.S. space agency NASA and the Indian Space Research Organisation (ISRO), carries a synthetic aperture radar — an instrument that, unlike an ordinary camera, does not depend on daylight or clear weather. Radar instruments bounce microwave signals off Earth's surface and record the echoes, allowing them to image the ground through clouds, smoke, and darkness.
That capability makes radar satellites especially valuable for monitoring volcanoes. By comparing radar images taken on different dates, scientists can build time-lapse sequences that show exactly how a lava field expands, thickens, and reshapes the terrain over days and weeks. In the case of Krasheninnikov, NISAR has been following the eruption since it began, recording the steady eastward growth of the flow.
Did the earthquake wake the volcano?
The sequence of events is suggestive: a magnitude 8.8 earthquake, then an eruption within days, at a volcano that had been quiet for roughly 500 years. Large earthquakes have been suspected of triggering eruptions at nearby volcanoes in other parts of the world, and Kamchatka sits on the Pacific Ring of Fire, where tectonic plates collide and both earthquakes and volcanism are common.
Still, scientists generally treat such links cautiously. Establishing that an earthquake truly triggered an eruption — rather than the timing being coincidence — requires careful analysis of the volcano's plumbing system, the earthquake's waves, and the timing of any precursory unrest. At this stage, the connection between the July 30 earthquake and Krasheninnikov's awakening appears plausible but remains to be firmly demonstrated.
Why the eruption matters
Krasheninnikov's five-century slumber means that no modern instruments have ever recorded this volcano in action. Every satellite pass now adds to an unprecedented baseline of data on how the volcano behaves. NISAR's radar imagery provides a continuous, weather-independent record of the lava field's growth, information that would be difficult to gather any other way in Kamchatka's often cloud-covered coastal environment.
The eruption, with its slow, steady outpouring of lava rather than explosive blasts, is currently reshaping the area around the northern crater week by week. As long as the lava keeps flowing, NISAR will keep watching — and the resulting time-lapse record will give volcanologists a detailed case study of how a long-dormant volcano returns to life.
via Phys.org Space & Astronomy (Source)
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