Scientists say that Volcanoes scream before erupting. Yes, above are the conclusions drawn by a team of researchers, according to which, volcanic wail can reach a pitch that can be heard by the human ears too, before they start erupting.

Researchers analyzed a list of of data from the March 2009 eruption of Alaska’s Redoubt Volcano. They said that the volcano made several harmonic tremors of high scream frequencies before it suddenly stopped at five eruptions.

Above findings have been presented in a University of Washington (UW) press release. The above study was performed by Miss Alicia Hotovec-Ellis. She is a UW doctoral student in Earth and space sciences. She explained in her statements that the volcano made few extraordinarily high frequency tremors which have never been explained in any of the currently accepted theories. She added that the Redoubt’s volcanic wail also reached a pitch that can be heard by human ears as well.

“The pitch that Redoubt got up to was so much higher than any other volcano that we’ve recorded, and that’s kind of pushed the limits of all the models that were out there,” Hotovec-Ellis told National Geographic in an interview.

The research and the findings of Hotovec-Ellis and her colleagues are published in two papers in the Journal of Volcanology and Geothermal Research and Nature Geoscience.