FIELD OBSERVATION ON THE IMPACT OF BEACH NOURISHMENT ON HOT SPRING GROUNDWATER IN IBUSUKI PORT COAST

DOI Web Site 2 Citations 3 References
  • MIYAKE Takatomo
    株式会社エコー事業本部環境系事業部沿岸環境部
  • ONO Nobuyuki
    株式会社エコー事業本部防災系事業部環境解析部
  • KASAMO Kenki
    株式会社エコー事業本部防災系事業部環境解析部
  • NAKAMURA Shohei
    株式会社エコー事業本部環境系事業部沿岸環境部
  • FUJIWARA Takaya
    株式会社エコー事業本部環境系事業部沿岸環境部
  • YUKIMARU Toshiaki
    前国土交通省九州地方整備局鹿児島港湾・空港整備事務所海岸課
  • KAI Nobuhiro
    国土交通省九州地方整備局鹿児島港湾・空港整備事務所
  • NAGAYAMA Akio
    鹿児島大学学術研究院 海洋土木工学専攻
  • ASANO Toshiyuki
    鹿児島大学 地震火山地域防災センター

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Other Title
  • 指宿港海岸における養浜による温泉地下水への影響把握のための現地観測

Abstract

<p> In Ibusuki port coast, a coastal improvement project is in progress applying the idea of integrated shore protection system combining several coastal works and beach nourishment. For the construction of these works, the local groundwater environment system named as “natural sand-steaming hot spring” should be carefully conserved, because that is an important tourism resource in the region. This study intends to evaluate the impact on the hot-spring groundwater system by the beach nourishment work. In this purpose, we conducted in-situ field measurements to monitor the variations of the groundwater levels and sand temperature in the sandy beach by placing test nourishment sands.</p><p> The results show that any significant effects have not been obtained in the areas behind the seawall and neighboring region of the nourishment, whereas, the marked risings in groundwater level and sand temperature have been observed in the beach nourishment area.</p>

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