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Displaying 15 of about 73 resultsEl Volcán Sangay es uno de los volcanes más activos del país y los primeros reportes de sus erupciones datan del año 1628. Es importante conocer los posibles impactos de la actividad volcánica en nuestras comunidades. Así, la caída de ceniza es el principal fenómeno de las erupciones del volcán Sangay que afecta a las comunidades de los cantones de Guam…
Esta guía ayuda al proceso de formación con un lenguaje adecuado a las y los participantes de comunidades del Ecuador, a fin de fortalecer sus conocimientos generales sobre el tema y contar con un equipo de personas voluntarias comprometidas con el tema en diversas localidades del país. Para ello es fundamental que el proceso de formación sea muy horizo…
New research reveals more about the magnitude of January eruption, as researchers call for better preparedness
The eruption of the Hunga Tonga-Hunga Ha’apai volcano in January created an initial wave 90 metres high – almost the height of the Statue of Liberty (93m)
University of Bath tsunami expert calls for better warning systems to detect volcanic…
Benthic foraminifera from the South China Sea were studied to assess mass mortality and to monitor the composition and recovery of the benthic communities following the 1991 Mt Pinatubo ashfall. Surface distribution data from monitoring stations in the eastern South China Sea that were occupied during four cruises between spring 1994 and summer 1998 dis…
The June 1991 eruption of Mount Pinatubo, Philippines, was the second largest of the 20th century, emplacing 5--6 km 3 of pyroclastic-flow material and creating record high sediment yields on rivers draining the volcano. This thesis explores landscape response to and recovery from sediment loading in the 1991 eruption from the drainage basin scale to mo…
The International Federation of Red Cross and Red Crescent Societies (IFRC) has officially approved two new Early Action Plans (EAPs): the EAP for Floods associated with Tropical Storms in Honduras, and the EAP for Volcanic Ashfall in Costa Rica. As a result, 2,700 Honduran families and 2,400 Costa Rican families will be able to anticipate the impacts o…
Small Island Developing States (SIDS) are incredibly vulnerable to intensifying hazards from climate change. But the challenges that SIDS face in adapting can only be understood by looking at how these impacts interact with other risks – not all of them environmental.
A dire example of this is the recent eruption of the Hunga Tonga-Hunga Ha’a…
Tsunamis are surface water gravity waves originating from the sudden displacement of water occurring in an earthquake, volcanic crater collapse, or underwater landslide. The local propagation speed of tsunamis is given by the square root of g.H, where g is the acceleration of gravity and H is the local water depth. As the water depth of the oceans is we…
On the evening of January 15, the Kingdom of Tonga witnessed the violent eruption of the underwater Hunga Tonga-Hunga Ha'apai volcano, sending shockwaves and tsunamis across the Pacific and beyond. Within a few hours, the South Pacific archipelago was blanketed by a thick layer of smoke and ash. Entire towns were left inundated by the waves that also wi…
This paper presents an innovative method of estimating the relative risk of buildings exposed to seismic and tsunami hazards in volcanic islands is applied to Stromboli (Italy), a well-known stratovolcano affected by moderate earthquakes and mass-flow-induced tsunamis. The method uses a pre-existing quali-quantitative analysis to assess the relative ris…
Does sea level rise increase the frequency of earthquakes and volcanic eruptions? Or does the melting of glaciers due to temperature rise lead to more volcanic eruptions?
Scientists have long offered this hypothesis, and now they have a chance to test this theory.
“Recent studies have proposed a causal link between rising sea-level during periods of w…
New models that show how the continents were assembled are providing fresh insights into the history of the Earth and will help provide a better understanding of natural hazards like earthquakes and volcanoes.
“We looked at the current knowledge of the configuration of plate boundary zones and the past construction of the continental crust,” said Dr De…
In January 2022, a submarine volcanic eruption triggered a tsunami in the Pacific island state of Tonga. The volcano created a powerful shock wave and displaced huge amounts of water, triggering a far-flung tsunami that raced across the vast Pacific Ocean and reached as far as the coasts of Japan and the Americas.
Despite successful disaster preparedne…
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Tongan officials said the Pacific nation’s practice of running tsunami drills had also played a part in saving lives, even as the island archipelago sustained extensive damage to property, with the majority of houses on some islands being completely destroyed. The confirmed death toll from Saturday’s explosion and tsunami, which was felt as far a…
Disaster preparedness, combined with updated risk information and timely assessments of damages and needs, were critical for Tonga’s response to the undersea volcanic eruption.On 15 January 2022, the underwater HungaTonga-Hunga Ha’apai volcano near Tonga erupted with a force that NASA scientists estimated to be hundreds of times more powerful than the H…