[1] 小笠原硫黄島の火山活動 (4) () http://ci.nii.ac.jp/els/110004867579.pdf?id=ART0008052223&type=pdf&lang=en&host=cinii&order_no=&ppv_type=0&lang_sw=&no=1473087795&cp=
[2] The 1957 explosive eruption on Iwo Jima, Volcano Islands () http://www.ajsonline.org/content/257/3/161.abstract
[3] () https://www.jstage.jst.go.jp/article/jgeography1889/77/5/77_5_255/_pdf
[5] 硫黄島航空基地 - Wikipedia ( ()) https://ja.wikipedia.org/wiki/%E7%A1%AB%E9%BB%84%E5%B3%B6%E8%88%AA%E7%A9%BA%E5%9F%BA%E5%9C%B0
[7] Loran Station Iwo Jima () http://www.loran-history.info/iwo_jima/iwo_jima.htm