Spatiotemporal seismic structure variations associated with the 2018 Kīlauea eruption based on temporary dense geophone arrays
Geophysical Research Letters
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Abstract
During the 2018 Kīlauea volcanic eruption, lava erupted from a series of new fissures in the lower East Rift Zone more than 30 km away from the summit through a dike intrusion. Between late May and early August, variations in the effusion rate at the persistent eruptive vent (Fissure 8) were observed following near‐daily summit caldera collapse events. Targeting the ongoing eruptive activity and the subsurface magma movement, we deployed a temporary dense seismic array. The observed time‐lapse changes in seismic velocity associated with the response of the summit collapse in three areas are presented in this study. The results show (1) clear spatially dependent co‐collapse velocity reductions across the newly‐intruded dike structure, (2) a gradual post‐collapse velocity increase near Fissure 8 correlated with the surge of magma supply, and (3) a gradual post‐collapse velocity increase on the summit likely associated with reservoir pressurization and crustal welding.
Suggested Citation
Wu, S., Lin, F., Farrell, J., Shiro, B., Karlstrom, L., Okubo, P.G., and Koper, K.D., 2020, Spatiotemporal seismic structure variations associated with the 2018 Kīlauea eruption based on temporary dense geophone arrays: Geophysical Research Letters, v. 47, no. 9, e2019GL086668, 10 p., https://doi.org/10.1029/2019GL086668.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Spatiotemporal seismic structure variations associated with the 2018 Kīlauea eruption based on temporary dense geophone arrays |
| Series title | Geophysical Research Letters |
| DOI | 10.1029/2019GL086668 |
| Volume | 47 |
| Issue | 9 |
| Publication Date | May 06, 2020 |
| Year Published | 2020 |
| Language | English |
| Publisher | American Geophysical Union |
| Contributing office(s) | Volcano Science Center |
| Description | e2019GL086668, 10 p. |
| Country | United States |
| State | Hawaii |
| Other Geospatial | Kīlauea volcano |