10.25349/D9P89X
Matoza, Robin
0000-0003-4001-061X
University of California, Santa Barbara
Okubo, Paul
0000-0002-0381-6051
Hawaii State Department of Education
Shearer, Peter
0000-0002-2992-7630
Institute of Geophysics
Supporting information for: Comprehensive high‐precision relocation of
seismicity on the Island of Hawai‘i 1986–2018: seismicity animations
Dryad
dataset
2021
National Science Foundation
https://ror.org/021nxhr62
EAR-1446543
2021-01-08T00:00:00Z
2021-01-08T00:00:00Z
en
https://doi.org/10.1029/2020ea001253
1615542722 bytes
6
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Abundant seismicity beneath the the Island of Hawai‘i from mantle depths
to the surface plays a central role in understanding how volcanoes work,
grow, and evolve at this intraplate oceanic hotspot. We perform systematic
waveform cross‐correlation, cluster analysis, and relative relocation of
347,445 events representing 32 years of seismicity on and around the
island from 1986 to 2018. We successfully relocate 275,009 (79%) events
using ∼1.7 billion differential times (P aicnd S) from ∼128 million
similar‐event pairs. The results reveal a dramatic sharpening of
seismicity along faults, streaks, rings, rift zones, magma pathways, and
mantle fault zones; seismicity delineating crustal detachments on the
flanks of Kīlauea and Mauna Loa is particularly well‐resolved. The
resulting high‐precision spatio‐temporal image of seismicity captures
almost the entire 1983–2018 Pu‘u ‘Ō‘ō‐Kūpaianaha eruption of Kīlauea with
its numerous distinct episodes and wide‐ranging activity, culminating in
the 2018 lower East Rift Zone eruption and summit collapse.