静岡大学地球科学研究報告
Online ISSN : 2436-7184
Print ISSN : 0388-6298
最新号
選択された号の論文の3件中1~3を表示しています
  • 北村 晃寿
    2026 年53 巻 p. F1-F12
    発行日: 2026/04/08
    公開日: 2026/04/08
    研究報告書・技術報告書 フリー
  • 北村 晃寿
    2026 年53 巻 p. 1-5
    発行日: 2026/04/01
    公開日: 2026/04/01
    研究報告書・技術報告書 フリー
    On July 3, 2021, a debris flow occurred due to the collapse of an embankment located at the headwaters of the Aizome River in Atami City, Shizuoka Prefecture. In this study, diatom assemblages were analyzed from three sites: an uncollapsed black soil (site B1) and brown soil (site B2) within the embankment, and a debris-flow deposit at site A2. The results revealed that each of the three sites exhibited distinct assemblage compositions. Notably, both inner bay and open-ocean diatom taxa were detected exclusively in the debris-flow deposit. These findings indicate that the composition of diatom assemblages is a useful indicator for classifying debris-flow deposits.
  • 小山 真人
    2026 年53 巻 p. 7-19
    発行日: 2026/05/20
    公開日: 2026/05/20
    研究報告書・技術報告書 フリー
    A review of the history of volcanic disaster mitigation on Mount Fuji reveals a notable turning point that occurred between 1999 and 2000. Until around the summer of 1999, local government and tourism officials had maintained a passive stance toward volcanic disaster mitigation; however, their attitude underwent a dramatic shift over the approximately one-year period leading up to July 2000, which subsequently led to the consistent development of volcanic disaster mitigation measures for Mount Fuji.
    To investigate the detailed process and causes of this shift, the author collected newspaper articles, administrative documents, and recordings of news programs from that one-year period and the time immediately before and after it. Furthermore, from October 2024 to March 2026, the author conducted interviews via email, telephone, and in-person meetings with several individuals involved at the time (including government officials and media personnel such as news reporters).
    The findings revealed that a reporter, recognizing the lack of volcanic disaster mitigation measures for Mount Fuji in 1999, first raised the issue. Although initially met with strong resistance from local stakeholders, this prompted both journalists and government officials to take action, each using their respective positions and means to promote understanding of volcanic disaster mitigation and advance related policies. Furthermore, as local media actively reported on the issue. All these efforts helped foster a social climate conducive to advancing volcanic disaster mitigation measures for Mount Fuji, resulting in a rapid shift in local society.
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