十万个为什么·科学阅读30篇（1）

21 / 30

为什么间歇泉会以固定间隔喷发？

Geysers erupt when underground water heats up, turns to steam, and builds pressure beneath a narrow rock channel.
The timing depends on how quickly heat flows from magma below and how much water refills the chamber after each blast.
A constriction in the pipe traps steam until pressure becomes strong enough to lift the water column above it.
Once the seal breaks, steam rushes upward, pushing water out in a powerful, hot explosion.
Afterward, cool groundwater slowly seeps back in, restarting the heating cycle all over again.
Scientists measure eruption intervals using sensors that track temperature, pressure, and ground movement.
No two geysers behave exactly alike because each has unique underground plumbing and heat sources.
Old Faithful stays predictable thanks to stable geology—but climate change may alter its timing in coming decades.
This natural clockwork reminds us that Earth’s interior constantly moves energy toward the surface.
Understanding geyser rhythms helps geologists monitor volcanic activity safely and remotely.