Posted: May 20th, 2015 | Author: Michael Courtenay | Filed under: Applied Science, Geology | Tags: British Antarctic Survey, CSIRO, Dasyurus Hallucatus, Eyjafjallajökull-Iceland, Michio Kaku, Monash University, Nishinoshima, Subduction, UNESCO, Volcanic Research, Volcano, Volcanologist | Comments Off on Scientists Discover New Volcanic Eruption Trigger
Scientists say they’ve found a new way to predict when a volcano is about to erupt. Simply; after a measurable pressure drop occurs within a volcano’s internal plumbing, an eruption is likely to follow.
This pressure drop can potentially be used by volcanologists to predict a catastrophic eruption. The researchers say the importance is quite significant, particularly if you are part of a community that lives next door to a volcano, or an airline company mapping flight routes.
The study is hoping to engineer early warning systems so that people can be told with a huge degree of confidence when to get out of the way.
Lead author Dr Janine Kavanagh from the University of Liverpool said with more than 600 million people worldwide living near a volcano at risk of eruptive activity, it is more important than ever that triggering mechanisms are made more accurate. This previously unrecognised trigger could also alleviate the “headache” volcanic eruptions cause civil aviation by providing early and accurate warnings to authorities when they should divert aircraft.
“There is also a strong economic incentive to understand the causes of volcanic activity as demonstrated in 2010 by the eruption of Eyjafjallajökull, Iceland, causing air-traffic disruption across Europe for more than a month, and an estimated $A2.5 billion loss in revenue to the airline industry :: Read the full article »»»»
Posted: July 30th, 2012 | Author: Michael Courtenay | Filed under: Cankler Science News, Climate Change | Tags: British Antarctic Survey, Carbon, Climate Change, CSIRO, Southern Ocean, Subduction | Comments Off on Southern Ocean Carbon NOT Sinking
Australian and British researchers have found that one of the world’s largest carbon sinks stores carbon differently than first thought. Utilising data collected over ten years from robotic – Argo – probes, the team has shown subduction happens at specific locations as a result of interplay between winds, currents and massive whirlpools.
Dr Matear says the study also shows the Southern Ocean is not as efficient as first thought in capturing anthropogenic carbon dioxide. The Southern Ocean contains about 40 per cent of all carbon dioxide emissions absorbed by the world’s oceans.
Researchers from the CSIRO and British Antarctic Survey examined the way the Southern Ocean sucks carbon absorbed from the surface layer into the deeper ocean.
Research co-author Dr Richard Matear from the CSIRO says the study shows the method through which carbon is drawn down from the surface of the Southern Ocean to the ocean’s interior – or deep waters :: Read the full article »»»»