A5058113607- Geological and Geophysical Studies
- Geological and Geochemical Analysis
- earthquake and tectonic studies
- Seismic Waves and Analysis
- High-pressure geophysics and materials
- Seismology and Earthquake Studies
- Island Studies and Pacific Affairs
- Earthquake Detection and Analysis
- Methane Hydrates and Related Phenomena
- Seismic Imaging and Inversion Techniques
- Disaster Management and Resilience
- Geology and Paleoclimatology Research
- Landslides and related hazards
- Underwater Acoustics Research
- Atmospheric and Environmental Gas Dynamics
- Atmospheric Ozone and Climate
- Geochemistry and Elemental Analysis
- Paleontology and Stratigraphy of Fossils
- Maritime and Coastal Archaeology
- Public Relations and Crisis Communication
- Meteorological Phenomena and Simulations
- Disaster Response and Management
- Infrared Target Detection Methodologies
- Coral and Marine Ecosystems Studies
- Mercury impact and mitigation studies
Vanuatu Cultural Centre
2013-2024
MIROVA (Middle Infrared Observation of Volcanic Activity) is an automatic volcano hot spot detection system, based on the analysis MODIS data (Moderate Resolution Imaging Spectroradiometer). The system able to detect, locate and quantify thermal anomalies in near real-time, by providing, a dedicated website (www.mirovaweb.it), infrared images flux time-series over 200 volcanoes worldwide. Thanks its simple interface intuitive representation data, currently used several observatories for...
Abstract In November 2019, the fourth Volcano Observatory Best Practices workshop was held in Mexico City as a series of talks, discussions, and panels. Volcanologists from around world offered suggestions for ways to optimize volcano-observatory crisis operations. By crisis, we mean unrest that may or not lead eruption, eruption itself, its aftermath, all which require analysis communications by observatory. During priority observatory should be acquire, process, analyze, interpret data...
Siwi caldera, in the Vanuatu arc (Tanna island), is a rare volcanic complex where both persistent eruptive activity (Yasur volcano) and rapid block resurgence (Yenkahe horst) can be investigated simultaneously during post-caldera stage. Here we provide new constraints on feeding system of this complex, based detailed study petrology, geochemistry volatile content Yasur–Siwi bulk-rocks melt inclusions, combined with measurements chemical composition mass fluxes Yasur gases. Major trace...
Infrasonic and seismic waveforms were collected during violent strombolian activity at Yasur Volcano (Vanuatu).Averaging ~3000 events showed stable waveforms, evidencing a low-frequency (0.1-0.3 Hz) signal preceding ~5-6 s the explosion.Infrasonic mostly asymmetric with sharp compressive (5-106 Pa) onset, followed by small long-lasting rarefaction phase.Regardless of pressure amplitude, ratio between positive negative phases was constant.These waveform characteristics closely resembled blast...
Abstract Eruptive activity shapes volcanic edifices. The formation of broad caldera depressions is often associated with major collapse events, emplacing conspicuous pyroclastic deposits. However, subsidence may also proceed silently by magma withdrawal at depth, more difficult to detect. Ambrym, a basaltic island, hosts 12-km wide and several intensely-degassing lava lakes confined intra-caldera cones. Using satellite remote sensing deformation, gas emissions thermal anomalies, combined...
Large earthquakes are often assumed to influence the eruptive activity of volcanoes. A major challenge better understand causal relationship between these phenomena is detect and image, in detail, all induced changes, including subtle, non‐eruptive responses. We show that coda wave interferometry can be used image such earthquake‐induced responses, as recorded at Yasur volcano (Vanuatu) following a magnitude 7.3 earthquake which occurred 80 km from its summit. use repeating Long‐Period...
Building damage from tephra falls can have a substantial impact on exposed communities around erupting volcanoes. There are limited empirical studies of fall impacts buildings, with none impacting traditional thatched timber despite their prevalence across South Pacific island nations and parts Asia. The 2017/2018 explosive eruption Manaro Voui, Ambae Island, Vanuatu, resulted in to (thatched timber), non-traditional (masonry), hybrid buildings March/April July 2018. Field photographic...
Abstract The Vanuatu arc in the southwest Pacific Ocean is one of world's most seismically active regions, with almost 39 magnitude 7+ earthquakes past 43 years. Convergence rates are around 90–120 mm/yr along arc, but drop to 25–43 central section, probably due subduction d'Entrecasteaux ridge. We characterize slab geometry and tectonic state this section by analyzing data from a 10 month deployment 30 seismometers over section. located more than 30,000 events (all less 5.5), constructed an...
Abstract In late 2018, Ambrym volcano, Vanuatu, erupted for the first time in 3 years. We show that eruption was result of a 6.5‐m‐wide, ∼0.7‐km dike intrusion which propagated more than 20 km into eastern rift zone. The eruptive sequence began with small shallow within main caldera but ultimately triggered much larger intrusion, draining both (1–2 km) and deeper (∼5 magmatic systems. Extension ∼3 m is estimated across zone 2 subsidence caldera. Modeling suggests stress changes induced by...
SUMMARY Yasur volcano, Vanuatu is a continuously active open-vent basaltic-andesite stratocone with persistent and long-lived eruptive activity. We present results from seismo-acoustic field experiment at Yasur, providing locally dense broad-band seismic infrasonic network coverage 2016 July 27 to August 3. corroborate our observations coincident video data cameras deployed the crater on an unoccupied aircraft system (UAS). The waveforms contain profusion of signals reflecting Yasur’s...
Volcanic ballistics are the main hazard to life and infrastructure from Strombolian eruptions, which a tourist drawcard, exposing people this hazard. Most research date has been understand style of eruption how form travel. However, little focus placed on distributed within ballistic fields or inclusion data into risk assessments. In study we used UAV image field, cameras record eruptions at Yasur Volcano, Vanuatu 28 July – 2 August 17 19 October 2016. We present mapped distributions two...
Abstract The seismic wavefield associated with Strombolian activity is usually dominated by explosion quakes (EQs), tremor, and various signals generated surface phenomena. Looking at the seismicity recorded Yasur volcano in 2008, we found that beside transient events which occur simultaneously explosions, includes related to a deeper process. These long period (LP) form family of similar located below southeastern part crater rim depth about 700–1200 m summit. They are commonly followed EQs...