Funding for this research was provided by:
Ministry of Education, Culture, Sports, Science and Technology (New Earthquake Prediction Programm, KAKENHI (A)(2) 10304033)
Received: 10 March 2019
Accepted: 11 September 2019
First Online: 27 September 2019
Change Date: 26 March 2020
Change Type: Correction
Change Details: In the original publication of this article (Iwasaki et al. 2019), the author name 'Matsubara Makoto' in author list is not correct. The correct name should be 'Makoto Matsubara'.
: The authors declare that they have no competing interests.