Influence of volcanic activity at Mauna Loa, Hawaii, on earthquake occurrence in the Kaoiki Seismic Zone

Walter, Thomas R.; Amelung, F.

doi:10.1029/2003gl019131

Cited by 23 publications

(17 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The depths tested in our model for the magma reservoir are of the same order as the estimation of magma reservoir depth at Campi Flegrei, which has been estimated to be below 4 km (De Natale and Pingue, 1993; Beauducel et al. , 2004) and at 3.5–4 km depth for the Mauna Loa (Hawaii) (Walter and Amelung, 2004).…”

Section: Model Proceduresmentioning

confidence: 93%

See 1 more Smart Citation

Fault slip and Coulomb stress variations around a pressured magma reservoir: consequences on seismicity and magma intrusion

et al. 2006

View full text Add to dashboard Cite

Pressure variations in a magma reservoir may cause deformation at the surface and a redistribution of the stress in the surrounding rock. In this study, we use two‐dimensional numerical models and elaborate how magma chamber inflation and deflation affect the stress field around and surface displacement. We test how a pre‐existing normal fault near the magma reservoir may influence the pattern of stress. We demonstrate the possibility of initiating both normal and reverse slip on faults during the inflation of the magma reservoir. The Coulomb failure stress changes are calculated during the periods of pressure variation. An increase of Coulomb failure stress can be predicted above and below the magma chamber during increasing magma chamber pressure that may encourage earthquakes. This process can produce cracks and fault growth encouraging magma propagation along the cracked zone. A different distribution of the stress change is expected in the case of subsequent deflation of the overpressured magma reservoir. In this case, seismicity is expected on a plane at equal depth than the magma chamber, laterally offset from the extent of the magma chamber. Magma could propagate laterally from the magma reservoir into zones where cracks have been generated, but only if the resolved shear stress on the fault is small compared with the excess magma pressure.

show abstract

Section: Model Proceduresmentioning

confidence: 93%

“…, 2002; Doubre, 2004; Foulger et al. , 2004, 2005; Walter and Amelung, 2004). An increase of seismicity above the magma reservoir of Campi Flegrei (Italy) is believed during inflation of the magma reservoir (De Natale and Zollo, 1986; De Natale et al.…”

Section: Introductionmentioning

confidence: 99%

Fault slip and Coulomb stress variations around a pressured magma reservoir: consequences on seismicity and magma intrusion

et al. 2006

View full text Add to dashboard Cite

show abstract

“…At Mauna Loa, low‐angle detachments similar to that inferred beneath Kilauea's south flank have been inferred on the west (Kealekekua Fault Zone) and southeast (Hilea and Kaoiki seismic zones) flanks (Figure b) [ Wolfe et al ., ]. Seismicity in the Kaoiki and Hilea seismic zones (Figure b) reflects complex mechanical interactions between Mauna Loa and Kilauea volcanoes; seismicity in these areas includes a combination of detachment and strike‐slip mechanisms [ Klein et al ., ; Got and Okubo , ; Walter and Amelung , ]. Two swarms of DLPs occurred in the mantle beneath Mauna Loa in 2002 (31 events) and 2004–2005 (~2000 events) associated with a geodetically observed intrusion [ Okubo and Wolfe , ].…”

Section: Context: Seismicity On Hawaii Islandmentioning

confidence: 99%

Systematic relocation of seismicity on Hawaii Island from 1992 to 2009 using waveform cross correlation and cluster analysis

et al. 2013

View full text Add to dashboard Cite

[1] The analysis and interpretation of seismicity from mantle depths to the surface play a key role in understanding how Hawaiian volcanoes work. We present results from a comprehensive and systematic re-analysis of waveforms from 130,902 seismic events recorded by the U.S. Geological Survey Hawaiian Volcano Observatory permanent seismic network from January 1992 to March 2009. We compute high-precision relative relocations for 101,390 events (77% of all events considered) using waveform cross correlation and cluster analysis, resulting in a multiyear systematically processed catalog of seismicity for all of Hawaii Island. The 17 years of relocated seismicity exhibit a dramatic sharpening of earthquake clustering along faults, streaks, and magmatic features, permitting a more detailed understanding of fault geometries and volcanic and tectonic processes. Our relocation results are generally consistent with previous studies that have focused on more specific regions of Hawaii. The relocated catalog includes crustal seismicity at Kilauea and its rift zones, seismicity delineating crustal detachment faults separating volcanic pile and old oceanic crust on the flanks of Kilauea and Mauna Loa, events along inferred magma conduits, and events along inferred mantle fault zones. The relocated catalog is available for download in the supporting information.

show abstract

“…We also consider magma chamber inflation at 5 km depth below the summit of Mauna Loa. The inflating magma chamber is simulated by a volume increase that approximates a 10‐year inflation period since the last eruption [see also Walter and Amelung , 2004]. Parameters of the modeled intrusions are given in Table 2, and the locations are shown in Figures 4 and 5.…”

Section: Stress Transfer Modelsmentioning

confidence: 99%

Volcano‐earthquake interaction at Mauna Loa volcano, Hawaii

Walter

Amelung

2006

J. Geophys. Res.

Self Cite

View full text Add to dashboard Cite

[1] The activity at Mauna Loa volcano, Hawaii, is characterized by eruptive fissures that propagate into the Southwest Rift Zone (SWRZ) or into the Northeast Rift Zone (NERZ) and by large earthquakes at the basal decollement fault. In this paper we examine the historic eruption and earthquake catalogues, and we test the hypothesis that the events are interconnected in time and space. Earthquakes in the Kaoiki area occur in sequence with eruptions from the NERZ, and earthquakes in the Kona and Hilea areas occur in sequence with eruptions from the SWRZ. Using three-dimensional numerical models, we demonstrate that elastic stress transfer can explain the observed volcano-earthquake interaction. We examine stress changes due to typical intrusions and earthquakes. We find that intrusions change the Coulomb failure stress along the decollement fault so that NERZ intrusions encourage Kaoiki earthquakes and SWRZ intrusions encourage Kona and Hilea earthquakes. On the other hand, earthquakes decompress the magma chamber and unclamp part of the Mauna Loa rift zone, i.e., Kaoiki earthquakes encourage NERZ intrusions, whereas Kona and Hilea earthquakes encourage SWRZ intrusions. We discuss how changes of the static stress field affect the occurrence of earthquakes as well as the occurrence, location, and volume of dikes and of associated eruptions and also the lava composition and fumarolic activity.

show abstract

Influence of volcanic activity at Mauna Loa, Hawaii, on earthquake occurrence in the Kaoiki Seismic Zone

Cited by 23 publications

References 22 publications

Fault slip and Coulomb stress variations around a pressured magma reservoir: consequences on seismicity and magma intrusion

Fault slip and Coulomb stress variations around a pressured magma reservoir: consequences on seismicity and magma intrusion

Systematic relocation of seismicity on Hawaii Island from 1992 to 2009 using waveform cross correlation and cluster analysis

Volcano‐earthquake interaction at Mauna Loa volcano, Hawaii

Contact Info

Product

Resources

About