Flooding history of Lake Nakaumi, western Japan, inferred from sediment records spanning the past 700 years

DOI Web Site Web Site 被引用文献1件 参考文献46件
  • Yuki Ota
    Atmosphere and Ocean Research Institute the University of Tokyo Kashiwa Chiba Japan
  • Hodaka Kawahata
    Atmosphere and Ocean Research Institute the University of Tokyo Kashiwa Chiba Japan
  • Takaharu Sato
    Graduate School of Integrated Arts and Sciences Hiroshima University Hiroshima Japan
  • Koji Seto
    Research Center for Coastal Lagoon Environment Shmane University Matsue Japan

書誌事項

公開日
2017-09-27
資源種別
journal article
権利情報
  • http://onlinelibrary.wiley.com/termsAndConditions#vor
DOI
  • 10.1002/jqs.2982
公開者
Wiley

この論文をさがす

説明

<jats:title>ABSTRACT</jats:title><jats:sec><jats:label/><jats:p>Management of flood risk can benefit from a knowledge‐based approach to flooding history. However, the data on such events are often insufficient for an objective evaluation of flooding characteristics such as their intensity. Therefore, we analyzed a <jats:sup>14</jats:sup>C‐dated sediment core recovered from near the Iinashi River mouth in Lake Nakaumi, western Japan, and reconstructed flooding records over the past 700 years from rock magnetism, grain‐size distribution and sediment geochemistry. The sediment core contained three black layers, characterized by high magnetic susceptibility, low anhysteretic remanent magnetization to saturation isothermal remanent magnetization ratio, high total organic carbon (TOC) to total nitrogen ratio, and coarse mean grain size, which we identified as possible flooding event deposits. Moreover, the chemical index of alteration was low and the TOC to total sulfur ratio was high in these layers, indicating intensified erosion associated with more freshwater inflow due to the flood events. We tentatively correlated the three event deposits with historical floods along the Iinashi River in AD 1596, 1666 and 1826. The variations in rock magnetic and geochemical properties suggest that the flooding in AD 1666 may have been the least extreme of the events detected in the core.</jats:p></jats:sec>

収録刊行物

被引用文献 (1)*注記

もっと見る

参考文献 (46)*注記

もっと見る

関連プロジェクト

もっと見る

詳細情報 詳細情報について

問題の指摘

ページトップへ