scientist have been exit somewhat bewilder by seismic waves traveling around the public , because no one is completely indisputable what caused them .

As describe byNational Geographic , these waves were find on November 11 by sensors around the world . Believed to have originated near the French island of Mayotte between Madagascar and Africa , they were notice in Zambia and Kenya , and then made their direction to Canada , Chile , New Zealand ,   and even Hawaii .

Despite the waves lasting for 20 minutes , no person felt them . Instead , their presencewas spottedon a veridical - fourth dimension seismogram from the US Geological Survey . And scientist were directly confused as to what was cause them .

“ I do n’t think I ’ve see anything like it , ” Göran Ekström from Columbia University told National Geographic . “ It does n’t think that , in the remainder , the cause of them is that exotic . ”

These wave were thought to be particularly slow and low frequency , pulsate every 17 seconds during the course of the upshot . Exactly what stimulate them , however , is a bit of a mystery story – although there are some ideas .

The Gallic Geological Survey ( BRGM ) , who are investigating the event , say it could have been the resultant role of new volcanic activity off the coast of Mayotte . It ’s also possible that an temblor triggered the rumblings , or perhaps some sort of irruption in the water .

“ According to   one analysis , this movement could be due to the voidance of a magma reservoir nearby , although additional research would be take to swan this , ” notedScience Alert .

Interestingly , half a year before this outcome scientists had detected a drove of earthquake off the east coast of Mayotte , which had uphold up to this latest event and have been causing the island to move very slimly . But this did n’t appear to have the same characteristics as a regular temblor .

“ These observations therefore back up the hypothesis of a combination of tectonic and volcanic effects describe for a geological phenomenon involving a seismal episode and a volcanic phenomenon , ” the BRGM said in apost .

coming sight are planned to endeavor to get to the bottom of the outcome , while scientists are continuing to focus through the seismic data point that ’s available . Of of course , there ’s always the possible action this was a error in the detections , too . We ’ll just have to wait to happen out .

[ H / T : National Geographic ]