Remote Triggering of Microearthquakes and Tremor in New Zealand following the 2016 Mw 7.8 Kaikōura Earthquake

Peng, Zhigang; Fry, Bill; Chao, Kevin; Yao, D.; Meng, Xiaofeng; Jolly, Art

doi:10.1785/0120170327

Cited by 15 publications

(9 citation statements)

References 51 publications

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“…In 2009, small stress perturbation from the Dusky Sound Earthquake reactivated slip in the area of afterslip of the 2007 Fiordland Earthquake, suggesting that this region is prone to SSEs (Hamling and Hreinsdóttir 2016). Triggered tremors have also been detected in this region following the Kaikoura Earthquake (Peng et al 2018). We detect 43 tremors in this region.…”

Section: Puysegurmentioning

confidence: 65%

“…Ambient tectonic tremors have been detected in onshore (Kim et al 2011;Todd and Schwartz 2016) and offshore Gisborne (Todd et al 2018), Manawatu (Ide 2012), and along the Alpine Fault (Wech et al 2012). Triggered tremors have been reported in Manawatu (Fry et al 2011), and more recently to the north and east of Auckland, in Puysegur, and in Manawatu (along the Taupo Volcanic Zone) following the Kaikoura Earthquake (Peng et al 2018). Despite these discoveries, tremor studies in New Zealand have generally proven difficult due to the high activity of ordinary earthquakes, which makes automatic detection and location challenging.…”

Section: Introductionmentioning

confidence: 99%

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Ambient tectonic tremors in Manawatu, Cape Turnagain, Marlborough, and Puysegur, New Zealand

Romanet

Ide

2019

Earth Planets Space

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Tectonic tremors have been detected in New Zealand, including the Gisborne and Manawatu regions in the North Island and along the Alpine Fault in the South Island. Here we report a regional analysis of tremor activity in New Zealand and present a potential relationship between slow and ordinary earthquakes. We first construct a tremor catalog in the Cape Turnagain, Marlborough, and Puysegur regions that spans the 2005-2016 time period using the GeoNet permanent seismometer network, and extend the tremor catalog in Manawatu to cover the same period. We employ an envelope cross-correlation method to detect and locate the seismic events, then extract the tremor-like events using a scaling-law-based criterion that is a function of the event duration and seismic energy, and finally select the tremors by visual inspection. We find that the tremors in Cape Turnagain temporally coincide with known shallow slow slip events in the region. We are also able to relate the increased tremor rates during 2010-2011 and 2014-2015 to two deep slow slip events in Manawatu. However, known slow slip events cannot explain all the increases in the tremor rate throughout Manawatu. Tremors in the South Island occur near recent large earthquakes, such as the 2016 Mw 7.8 Kaikoura Earthquake in Marlborough and 2009 Mw 7.6 Dusky Sound Earthquake in Puysegur, suggesting a possible relationship between slow and fast tectonic processes. which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Section: Puysegurmentioning

confidence: 65%

Section: Introductionmentioning

confidence: 99%

Ambient tectonic tremors in Manawatu, Cape Turnagain, Marlborough, and Puysegur, New Zealand

Romanet

Ide

2019

Earth Planets Space

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“…7 noting that the static offset is measured from a 120 s seismic instrument and may also represent an unrecovered sawtooth-shaped deformation pulse having a longer duration than the sensor corner frequency). While surface wave excitations from large earthquakes at teleseismic distances (e.g., Peng et al 2018) may trigger a near surface response in a quasi-dynamic manner, it is uncertain if near-field VLP may generate dynamic stresses in the same manner. Alternatively, the eruption trigger could be due to a quasi-static near-field deformation from either the oscillatory VLP or the apparent static offset (Fig.…”

Section: Triggering Mechanisms For Volcanic Eruptionsmentioning

confidence: 99%

Relating gas ascent to eruption triggering for the April 27, 2016, White Island (Whakaari), New Zealand eruption sequence

Jolly

Lokmer

Christenson

et al. 2018

Earth Planets Space

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The April 27, 2016 eruption sequence at White Island was comprised of 6 discrete eruptive events that occurred over a 35-min period. Seismicity included three episodes of VLP activity: the first occurring ~ 2 h and a second occurring 10 min prior to the first eruption. A third larger VLP event occurred just prior to the fourth eruption. A VLP source depth of 800-1000 m below the vent is obtained from an analysis of the waveform semblance, and a volumetric source is obtained from waveform inversion of the largest VLP event. Lag times between VLP occurrence and eruption onsets provide an opportunity to examine gas migration and stress transfer models as potential triggers to the eruptive activity. Plausible lag times for a deep gas pulse to the surface are obtained by application of a TOUGH2 computational model which suggests propagation times of 0.25-1.9 m/s and are informed by previously measured White Island rock porosities and permeabilities. Results suggest that pre-eruption VLP may be plausibly linked to advection of gas from the VLP source at a magmatic carapace located ~ 800-1000 m depth. Alternatively, the large VLP that occurred just prior to the fourth eruption may be linked to a quasi-dynamic or quasi-static stress perturbation. which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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“…Hydrothermal system triggering. Hydrothermal and geothermal systems have been observed to be extremely sensitive to earthquakes and dynamic stresses in particular 6,15,41,51,52,54,90,[120][121][122][123][124][125][126][127][128][129][130][131][132] . Hydrothermal systems are also generally well connected to the underlying magmatic reservoir 133,134 , hence destabilization may lead to a top-down depressurization of the entire magmatic system, and eventually magmatic eruption 4,15,135-138 (Fig.…”

Section: Triggering Mechanismsmentioning

confidence: 99%

A review framework of how earthquakes trigger volcanic eruptions

et al. 2021

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It is generally accepted that tectonic earthquakes may trigger volcanic activity, although the underlying mechanisms are poorly constrained. Here, we review current knowledge, and introduce a novel framework to help characterize earthquake-triggering processes. This framework outlines three parameters observable at volcanoes, namely magma viscosity, open- or closed-system degassing and the presence or absence of an active hydrothermal system. Our classification illustrates that most types of volcanoes may be seismically-triggered, though require different combinations of volcanic and seismic conditions, and triggering is unlikely unless the system is primed for eruption. Seismically-triggered unrest is more common, and particularly associated with hydrothermal systems.

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Remote Triggering of Microearthquakes and Tremor in New Zealand following the 2016 Mw 7.8 Kaikōura Earthquake

Cited by 15 publications

References 51 publications

Ambient tectonic tremors in Manawatu, Cape Turnagain, Marlborough, and Puysegur, New Zealand

Ambient tectonic tremors in Manawatu, Cape Turnagain, Marlborough, and Puysegur, New Zealand

Relating gas ascent to eruption triggering for the April 27, 2016, White Island (Whakaari), New Zealand eruption sequence

A review framework of how earthquakes trigger volcanic eruptions

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