Tilt record from summit tiltmeter at Uwekahuna vault.
![Tilt record from summit tiltmeter at Uwekahuna vault.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/tilt980115.gif?itok=uAzT-qoP)
Detailed Description
Tilt record from summit tiltmeter at Uwekahuna vault. Tilt is recorded in microradians; one radian equals 57.3 degrees. (For those unfamiliar with tilt units, one microradian is roughly the tilt created by inserting a dime beneath the end of one-kilometer-long beam.) The tilt record shows the abrupt inflation of Kilauea's summit area soon after the seismic swarm began, followed by deflation as a slug of magma moved from the summit to the Pu`u `O`o vent area, and finally recovery of the summit area to its pre-surge level.
Sources/Usage
Public Domain.