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2. Alsumaiei, A. A., and Bailey, R. T. (2018): Quantifying threats to groundwater resources in the Republic of Maldives Part II: Recovery from tsunami marine overwash events. Hydrological Processes, 32(9), 1154-1165.
3. Cabinet Office of Japan. (2011): Tsunami height and distribution of seismic intensity from the Huge Nankai Trough Earthquake (in Japanese). http://www.bousai.go.jp/jishin/nankai/taisaku/pdf/1_1.pdf (Inspected on October 19, 2019)
4. Central Disaster Management Council. (2014): Nankai Trough Earthquake disaster prevention countermeasures promotion area (in Japanese). http://www.bousai.go.jp/jishin/nankai/pdf/nankaitrough_keikaku.pdf (Inspected on October 19, 2019)
5. Construction Section of Niijima Village. (2001): Niijima Village Specific Environment Conservation, Public Sewage System Design and Geological Survey Report.