Anatomy of a Caldera Collapse: Kīlauea 2018 Summit Seismicity Sequence in High Resolution

@article{Shelly2019AnatomyOA,
  title={Anatomy of a Caldera Collapse: Kīlauea 2018 Summit Seismicity Sequence in High Resolution},
  author={David R. Shelly and Weston A. Thelen},
  journal={Geophysical Research Letters},
  year={2019},
  volume={46},
  pages={14395 - 14403}
}
The 2018 Kīlauea eruption and caldera collapse generated intense cycles of seismicity tied to repeated large seismic (Mw ~ 5) collapse events associated with magma withdrawal from beneath the summit. To gain insight into the underlying dynamics and aid eruption response, we applied waveform‐based earthquake detection and double‐difference location as the eruption unfolded. Here, we augment these rapid results by grouping events based on patterns of correlation‐derived phase polarities across… 

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References

SHOWING 1-10 OF 54 REFERENCES

Mechanics of Inflationary Deformation During Caldera Collapse: Evidence From the 2018 Kīlauea Eruption

During the 2018 Kīlauea eruption the caldera floor dropped 500 m in 62 nearly periodic events of up to 8 m. Caldera collapse maintains pressure in the magma reservoir necessary to sustain high‐rate

Magma reservoir failure and the onset of caldera collapse at Kīlauea Volcano in 2018

A model of time-evolving reservoir depressurization is developed to jointly explain lava lake withdrawal rate and the rate and spatial pattern of ground subsidence obtained from radar satellites and a dense local monitoring network.

Seismicity of a caldera collapse: Galapagos Islands 1968

The seismicity associated with the collapse of a volcanic caldera in the Galapagos Islands during June of 1968 has been studied in detail. The rate of seismic energy release, inferred from some 638

Linking magma transport structures at Kīlauea volcano

Identifying magma pathways is important for understanding and interpreting volcanic signals. At Kīlauea volcano, seismicity illuminates subsurface plumbing, but the broad spectrum of seismic

The 2018 rift eruption and summit collapse of Kīlauea Volcano

Careful historical observation and monitoring of Kīlauea enabled successful forecasting of hazardous events, and cyclic inflation, deflation, and eventual collapse of the summit was tied to lava eruption from lower East Rift Zone fissures.

Fluid‐faulting evolution in high definition: Connecting fault structure and frequency‐magnitude variations during the 2014 Long Valley Caldera, California, earthquake swarm

An extended earthquake swarm occurred beneath southeastern Long Valley Caldera between May and November 2014, culminating in three magnitude 3.5 earthquakes and 1145 cataloged events on 26 September

Shallow conduit system at Kilauea Volcano, Hawaii, revealed by seismic signals associated with degassing bursts

[1] Eruptive activity at the summit of Kilauea Volcano, Hawaii, beginning in March, 2008 and continuing to the present time is characterized by episodic explosive bursts of gas and ash from a vent

The collapse of Bárðarbunga Caldera, Iceland

Lying below Vatnajokull ice cap in Iceland, Barðarbunga stratovolcano began experiencing wholesale caldera collapse in 2014 August 16, one of the largest such events recorded in the modern

Magma dynamics and collapse mechanisms during four historic caldera‐forming events

[1] Four historic caldera-forming events were studied to understand the relationship of magma withdrawal processes and caldera subsidence mechanisms. Two calderas are silicic (Katmai in 1912 and
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