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Showing 1 to 6 of 6 for “"volcanic tremor"”.
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UNRAVELLING VOLCANIC TREMOR SOURCE AT MOUNT ETNA FROM QUANTITATIVE MULTIPARAMETRIC ANALYSIS AND MOMENT TENSOR INVERSION
STUDIO DELLA SORGENTE DEL TREMORE VULCANICO AL MT. ETNA MEDIANTE ANALISI QUANTITATIVA MULTIPARAMETRICA ED INVERSIONE DEL TENSORE MOMENTO. Lo sviluppo di reti multiparametriche di monitoraggio, tecniche di analisi in tempo reale e l'acquisizione di dati ad alta risoluzione, hanno permesso di …
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Towards monitoring volcanoes in Iceland and Hawai’i with seismic velocity variations
… and seasonal environmental stresses can obscure volcanic signals. I use volcanic tremor (∼ 0.3 to 1.0 Hz) at Kīlauea summit, Hawai’i, as a passive source for interferometry. Noise cross-correlation functions (CCFs), calculated between 230 station pairs, have coherent and temporally consistent …
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Seismic site characterization using broadband and DAS ambient vibration measurements on Mt Etna, Italy
… at the Piano delle Concazze area on Mt Etna. Volcanic tremor records from an array of 26 broadband seismometers is processed and a strong variability of H/V ratios during periods of increased volcanic activity is found. From the spatial distribution of H/V peak frequencies, a geologic …
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Towards Improved Volcano Monitoring via Automatic Classification of Continuous Tremor
… may be precursors to eruption, or change of volcanic activity state. This is particularly interesting for ‘wet’ volcanic systems such as Whakaari (White Island), which regularly produce steam-explosions that are difficult to predict. An unsupervised classifier based on Self-Organising Maps …
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Utilizing Changes in Repeating Earthquakes to Monitor Evolving Processes and Structure Before and During Volcanic Eruptions
… with time, until they blended into harmonic tremor prior to several explosions. We interpreted the source of the earthquakes as stick-slip on a fault near the conduit that slipped increasingly often as the explosion neared in response to the build-up of pressure in the system. The waveforms …
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Multi-parametric study of the 2020-2022 paroxysmal activity at mt. Etna: the role of fluids in the trigger mechanisms, durations and energy of the eruptive phenomena [Studio multi-parametrico dell’attività parossistica del 2020-21 al Mt. Etna: ruolo dei fluidi sui meccanismi di innesco, durata ed energia dei fenomeni eruttivi]
… le deformazioni di tilt, le ampiezze del tremore vulcanico e la gravimetria, sono stati analizzati per caratterizzare le eruzioni e le loro fasi preparatorie. Lo studio ha identificato tre periodi, distinti sulla base delle ampiezze di deflazione associate alle fontane di lava e ad altri …