Ongoing (2015-) magma surge in the upper mantle beneath the Island of Hawaiʻi
Geophysical Research Letters
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Abstract
“Surges” in magma supply from the mantle can lead to significant changes in eruptive behavior, thus their early identification is critical to long-term eruption forecasting. Here, we document and analyze two order-of-magnitude increases in seismicity in the upper mantle beneath southern Hawaiʻi between 2015 and 2020. We interpret the anomalous seismicity, which involved the rapid formation of new multiplets and a change in fault-plane solution orientations relative to pre-2015 events, as reflecting a substantial increase, or “surge” in mantle-derived magma, and we suggest that the intruded magma has been driving concurrent unrest at Mauna Loa, Kīlauea, and Lōʻihi Volcanoes through mechanical stress transfer.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Ongoing (2015-) magma surge in the upper mantle beneath the Island of Hawaiʻi |
| Series title | Geophysical Research Letters |
| DOI | 10.1029/2020GL091096 |
| Volume | 48 |
| Publication Date | April 09, 2021 |
| Year Published | 2021 |
| Language | English |
| Publisher | American Geophysical Union |
| Contributing office(s) | Volcano Science Center |
| Description | e2020GL091096, 10 p. |
| Country | United States |
| State | Hawaii |
| Other Geospatial | Island of Hawaii |