03-19-2021, 11:41 PM
From a recent USGS post about Kilauea:
Volcano Watch — Using the ocean to track volcanic activity at Kīlauea
The microseismic signals display large variations during periods when Kīlauea is inflating or deflating due to magma moving beneath its surface. Similar variations occur when the volcano is actively erupting, such as now. Scientists measure differences in these observed microseisms during periods of volcanic activity relative to times of quiet, in an effort to identify when, where, and for how long magma is migrating and being stored within Kīlauea.
HVO scientists recently applied this technique to better understand the events leading up to the 2018 lower East Rift Zone eruption and summit collapse. Microseism data combined with more traditional seismic and deformation patterns document the increase of pressure within the shallow region of the magma storage reservoir at Kīlauea’s summit. Both the summit and the East Rift Zone immediately began expanding rapidly, suggesting that magma was moving into these regions.
https://www.usgs.gov/center-news/volcano...ty-k-lauea
Volcano Watch — Using the ocean to track volcanic activity at Kīlauea
The microseismic signals display large variations during periods when Kīlauea is inflating or deflating due to magma moving beneath its surface. Similar variations occur when the volcano is actively erupting, such as now. Scientists measure differences in these observed microseisms during periods of volcanic activity relative to times of quiet, in an effort to identify when, where, and for how long magma is migrating and being stored within Kīlauea.
HVO scientists recently applied this technique to better understand the events leading up to the 2018 lower East Rift Zone eruption and summit collapse. Microseism data combined with more traditional seismic and deformation patterns document the increase of pressure within the shallow region of the magma storage reservoir at Kīlauea’s summit. Both the summit and the East Rift Zone immediately began expanding rapidly, suggesting that magma was moving into these regions.
https://www.usgs.gov/center-news/volcano...ty-k-lauea