A team of scientists, led by the University of Bristol’s School of Earth Sciences, has used Sentinel-1 satellite imagery to analyze the ground deformation of the Agung volcano in Bali, Indonesia, and explain why it erupted in November 2017 after 50 years of dormancy.
The previous eruption of Agung in 1963 killed nearly 2,000 people and was followed by a small eruption of its neighbouring volcano, Batur. Because this past event was among the deadliest volcanic eruptions of the 20th century, the scientific community deployed a great effort into the monitoring and understanding of the re-awakening of Agung.
Two months before the eruption, a sudden increase in the number of small earthquakes occurred around the volcano. The researchers realized satellite images could reveal the volcanic ground deformation that occurred prior to the 2017 eruption. From satellite imagery and 3D numerical models...
read moreThe free online course, provided by the University of Iceland, gives an introduction to volcano monitoring techniques, magma movements and volcano unrest. It presents some aspects of why volcanoes are dangerous and volcanic hazards.
As magma, molten rock inside volcanoes, approaches the surface it releases volcanic gas that finds its way to the surface, and geothermal activity can change. In addition to ground-based techniques, satellite observations are extensively used. The main monitoring techniques for volcanoes are explained in the course, with the aim that students understand both the concept of volcanic unrest and how it can be monitored, how eruptions can be monitored, and signs of volcanic eruptions as seen on instruments.
Understanding the possibilities and limitations of present-day volcano monitoring for detecting magma movements is an important step in understanding volcanoes, evaluating...
read moreUN-SPIDER and the National Secretariat for Science and Technology of Guatemala (SENACYT) join forces to conduct a seminar on the use of science, technology and innovation in disaster risk reduction and response efforts. The seminar entitled "Science and Technology: Applications for Disaster Preparedness and Response in Latin America and the Caribbean. Guatemala:...
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