SEDIMENT CONDITIONS FOR RESTORATION OF EELGRASS (<i>ZOSTERA MARINA</i>) DAMAGED BY TSUNAMI IN MIYAKO BAY

• OKADA Tomonari

  国土交通省国土技術政策総合研究所 沿岸海洋・防災研究部海洋環境研究室

• FURUKAWA Keita

  海洋政策研究財団 海洋グループ

Bibliographic Information

Other Title

• 宮古湾における津波からのアマモ復元の視点でみた底質状況
• SEDIMENT CONDITIONS FOR RESTORATION OF EELGRASS (ZOSTERA MARINA) DAMAGED BY TSUNAMI IN MIYAKO BAY

Abstract

 The ecosystem in Miyako Bay was greatly damaged during the tsunami generated by the "2011 Tohoku Earthquake off the Pacific coast". Topographical features of tidal flats and shallows were considerably changed, and large quantities of seagrass and seaweed disappeared. To provide basic background information for a future restoration of eelgrass (Zostera marina) in the bay, we undertook a study of current sediment conditions. Field measurements were carried out at the head of the bay in February and October, 2012. Sediments were collected at stations where Zostera marina had grown prior to the tsunami. Using entropy analysis, we grouped sediments according to particle-size distributions. The head of the bay was divided into three zones on the basis of suitability for Zostera marina. Taking into account the characteristics of each zone, we proposed future monitoring plans.

Journal

• Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering)

  Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 69 (2), I_31-I_36, 2013

  Japan Society of Civil Engineers

Keywords

• Tsunami
• Zostera marina
• sediment
• particle-size distribution
• Miyako bay

Details

• CRID: 1390282680329277824
• NII Article ID: 130004961733
• DOI: 10.2208/jscejoe.69.i_31
• ISSN: 21854688
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed