Jónas Elíasson heldur fyrirlestur um rannsóknir H.I., Kyoto University, Japan og Univ. of Appl. Sciences Düsseldorf, Þýskalandi
Í fyrirlestrinum kemur fram skýring á truflunum á flugi í Eyjafjallajökulsgosinu 2010, Grímsvatnagosinu 2011, og nýjar aðferðir til að spá um stærð og styrk öskuskýja sem fundist hafa í mælingum í öskustrók Sakurajima eldfjallsins í Japan.
Abstract in English
Predictions of volcanic ash clouds need to be accurate as the Eyjafjallajökull disaster proved to the world. Disaster Prevention Research Institute Kyoto University Japan has been active in airborne measurements of volcanic ash around Sakurajima volcano, working together with University of Iceland and University of Düsseldorf in Germany. Airborne measurements can be used to track the position and concentrations of volcanic ash clouds, estimate their mass and provide reliable information on concentration of volcanic ash in the air. They can be used to check dispersion models, compare with simulations, develop plume dynamics and provide aerosol data for ambient air as well as mitigate discrepancies in simulation methods by providing independent concentration data. Several fields have been identified where old methods need improvement. For the moment three weak points in the theory of volcanic plume dispersion have been identified and they are supported by airborne measurements in Sakurajima. This offers an opportunity for considerable improvement of the scientific methods and observation technology used in simulating the dispersion of volcanic clouds, but simulations over long distances of open sea are especially difficult and uncertain at the present stage of knowledge. New methods and modeling offers more correct predictions and improved practical disaster prevention.