an extraordinary eruption analyzed from floor to ceiling

The explosive eruption of the underwater volcano Hunga in Tonga on January 15 produced several extraordinary atmospheric and geophysical phenomena. This is shown in particular by an international study carried out by a team of 76 scientists from 17 countries country (Land comes from the Latin pagus denoting a territorial and tribal subdivision of extent…). Works compiled in a span of weather (Time is a concept developed by humans to represent the…) very brief, detailing the amplitude of the waves emanating from the eruption, which the authors say are comparable to those of the Krakatoa (The Krakatoa or Krakatau in Indonesian is a gray volcano – type volcano…) (Indonesia), which took place in 1883, more than a century (A century is now a period of one hundred years. The word comes from the Latin saeculum, i, what…). That Data (In information technology (IT), data is an elementary description, often…) Providing resolution and coverage of the Field (A field corresponds to a notion of defined space:) of waves in evolution with no common measure compared to what was then available. The article published in the journal Science (According to the dictionary, science (lat. scientia, “knowledge”) is…)is the first account rendered (Rendering is a computer process that calculates the 2D image (equivalent to a photograph)…) full of atmospheric waves generated by the eruption.


Global distribution of multi-technology sensors used for the study and monitoring (Observation is the act of attentively following phenomena without the will to see them…) Waves generated by thebust (An explosion is the rapid transformation of one material into another material with a…) from Hunga (Tonga) from a weather satellite (A meteorological satellite is an artificial satellite whose main task is…) geostationary.

This extensive study brings together several French researchers from several laboratories (CNRM, Observatoire de la Côte d’Azur, CEA-DAM-DIF, institute (An institute is a permanent organization created for a specific purpose. It is…) from physically (Physics (from Greek φυσις, nature) is etymologically the…) of the globe of Paris). It analyzes the volcanic explosion, the strongest recorded since the last century, using various networks of terrestrial and space instruments: seismometers, microbarometers, hydrophones, GNSS (Global navigation (Navigation is the science and set of techniques that make it possible 🙂 satellite (Satellite can refer to:) system), DART buoys, weather satellites.

Early evidence suggests an eruption on March 14 volcano (A volcano is a terrestrial, submarine, or extraterrestrial relief formed by the ejection and….) under the Sea level (Sea level is the average height of the sea surface, relative to a level of…)triggered the explosion Celebration (The word massive can be used as:) occurred the next day. The January 15 eruption produced a variety of atmospheric waves, including explosions, which could be heard 10,000 km away in Alaska. It also produced a pulse that caused the unusual appearance of a disorder resembling a tsunami (A tsunami (Japanese: ?tsu, “port” and ?nami, “wave”) is a…) a Hour (The hour is a unit of measurement of time. The word also denotes size…) before the onset of the actual seismic tsunami.

Among other things, scientists were interested in the waves produced by this large eruption: acoustic and infrasound waves, Lamb waves, etc. The ionospheric signatures of most of these waves were also observed with GNSS satellites. The published results use the synergy between different measurement technologies to detect rarely observed phenomena (especially theWave (A wave is the propagation of a disturbance that produces a reversible change in its path…) of lamb). coupling analysis dynamic (The word dynamic is often used to designate or qualify what refers to motion. It…) Waves generated at the ocean-land-atmosphere interfaces make it possible to better characterize the Hunga’s eruption source and the envelope’s impulse response Fluid (A liquid is a perfectly deformable material medium. Under this we group…) planetary (A planetarium denotes a mobile mechanical assembly representing the solar system…) to an eruption of extraordinary intensity. This study also highlights the new geophysical survey methods and their combined contributions to characterize the mechanism and short-term consequences of this volcano’s eruption.

Learn more:
Matoza et al., Atmospheric waves and global seismoacoustic observations of the January 2022 Hunga eruption, Tonga (The Kingdom of Tonga is a state in Polynesia, in the Pacific Ocean, in…)Science, 2022.
press release (A press release is a short document sent to journalists to tell them about a…) of’university (A university is a college whose aim is to…) from Santa Barbara

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