Rubuta ci gaba don wannan sakin layi - Nazarin kwanan nan guda biyu da Konstantinos Eftaxias da abokan aikinsa suka bincika filayen magnetic ULF kafin manyan girgizar ƙasa. A lokacin girgizar kasa ta 2011 Tohoku
, hasken ULF ya nuna halayyar mahimmanci, yayin da a girgizar kasa ta Sichuan ta 2008, masu binciken sun sami raguwar filin magnetic na ULF na kwance, wanda kuma za'a iya fassara shi azaman bayyanar da mahimmanci.