火か山ざん活かつ動どう

noun

volcanic activity

Refers to the collective phenomena associated with volcanoes, including eruptions, lava flows, ash emissions, and related seismic events.

• この地ち域いきでは火か山ざん活かつ動どうが活かっ発ぱつだ。

  Volcanic activity is active in this region.

• 火か山ざん活かつ動どうの監かん視しが強きょう化かされた。

  Monitoring of volcanic activity has been strengthened.