000005766 001__ 5766
000005766 005__ 20241203112928.0
000005766 0247_ $$2DOI$$a10.1016/j.epsl.2022.117502
000005766 037__ $$aSCART-2022-0059
000005766 100__ $$aCaudron, C.
000005766 245__ $$aInsights into the dynamics of the 2010 Eyjafjallajökull eruption using seismic interferometry and network covariance matrix analyses
000005766 260__ $$c2022
000005766 520__ $$aApplying seismic interferometry and network covariance matrix-based analyses to detect and locate the source of volcanic tremor during the 2010 Eyjafjallajökull effusive flank and explosive-effusive summit eruptions has provided new insights into this iconic event. The tremor source locations derived from the network covariance matrix approach were spatially distinct during the two eruptions. The tremor was radiated between the surface and 5–6 km depth during the effusive flank eruption, including an apparently progressive upward migration in early April 2010, but was strictly confined to the surface during the summit eruption. Each phase of the summit eruption left a distinct fingerprint in the seismic records. Effusive phases radiated continuous tremor between 0.6 and 5 Hz, whereas explosive phases produced tremor in a more pulsating fashion over a wider frequency band (0.2–10 Hz). A period of intermittent tremor bursts (called banded tremor) on 15 April, associated with formation of a new vent at the summit, was most likely generated by magma-gas-meltwater interaction within a subglacial enclosure. The banded tremor ceased following an abrupt draining of the newly formed subglacial cauldron, resulting in a large slurry glacial meltwater flood (jökulhlaup). This study highlights the importance of new data processing methodologies for future monitoring of volcanic tremor in real-time.
000005766 536__ $$aRANNIS/$$c185209-051/$$fIS-Noise
000005766 594__ $$aNO
000005766 6531_ $$aseismic noise
000005766 6531_ $$ainterferometry
000005766 6531_ $$aambient noise
000005766 6531_ $$avolcanology
000005766 6531_ $$avolcano-seismology
000005766 6531_ $$aeruption
000005766 700__ $$aSoubestre, J.
000005766 700__ $$aLecocq, T.
000005766 700__ $$aWhite, R.S.
000005766 700__ $$aBrandsdóttir, B.
000005766 700__ $$aKrischer, L.
000005766 773__ $$c117502$$pEarth and Planetary Science Letters$$v585$$y2022
000005766 85642 $$ahttps://www.sciencedirect.com/science/article/pii/S0012821X22001388
000005766 8560_ $$fthomas.lecocq@observatoire.be
000005766 8564_ $$s62562$$uhttps://publi2-as.oma.be/record/5766/files/1-s2.0-S0012821X22001388-gr006.jpg$$yNetwork covariance matrix spectral width: Time-frequency spectral width plot representing the phase coherence of vertical component signals recorded at stations EBAS, EFAG, EFIM, ENUP, ESEL, ESK, GOD, HAU, HVO and MID, from 5 March to 22 May 2010, computed on 9 min-long windows. The periods I, II, III and IV correspond to the phases defined by Gudmundsson et al. (2012).
000005766 8564_ $$s13597$$uhttps://publi2-as.oma.be/record/5766/files/1-s2.0-S0012821X22001388-gr006.gif?subformat=icon$$xicon$$yNetwork covariance matrix spectral width: Time-frequency spectral width plot representing the phase coherence of vertical component signals recorded at stations EBAS, EFAG, EFIM, ENUP, ESEL, ESK, GOD, HAU, HVO and MID, from 5 March to 22 May 2010, computed on 9 min-long windows. The periods I, II, III and IV correspond to the phases defined by Gudmundsson et al. (2012).
000005766 8564_ $$s7407$$uhttps://publi2-as.oma.be/record/5766/files/1-s2.0-S0012821X22001388-gr006.jpg?subformat=icon-180$$xicon-180$$yNetwork covariance matrix spectral width: Time-frequency spectral width plot representing the phase coherence of vertical component signals recorded at stations EBAS, EFAG, EFIM, ENUP, ESEL, ESK, GOD, HAU, HVO and MID, from 5 March to 22 May 2010, computed on 9 min-long windows. The periods I, II, III and IV correspond to the phases defined by Gudmundsson et al. (2012).
000005766 905__ $$apublished in
000005766 980__ $$aREFERD