About the Authors

Fatwa Ramdani

fatwa@s.tohoku.ac.jp

Affiliation Geoenvironment, Institute of Geography, Earth Science Department, Graduate School of Science, Tohoku University, Sendai, Japan

Masateru Hino

Affiliation Geoenvironment, Institute of Geography, Earth Science Department, Graduate School of Science, Tohoku University, Sendai, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: FR MH. Performed the experiments: FR. Analyzed the data: FR MH. Contributed reagents/materials/analysis tools: FR MH. Wrote the paper: FR MH.