Temporal and spatial variations of bottom sediment characteristics around the Tama River mouth in Tokyo Bay, Japan

Ryuichi Ariji, Hiroshi Yagi, Kazuo Nadaoka, Yasuyuki Nakagawa, Hiroshi Ogawa, Kenichiro Simosako, Kazuhiro Shirai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

This study investigates the temporal and spatial variations in the characteristics of bottom sediments around the Tama River mouth. Sediment samples were taken from 28 points every 3 months between May 2007 and October 2009, including the Tama River mouth area and an offshore site with a water depth of about 24 m. The collected sediment cores were sliced into four layers by depth (0-1 cm, 1-2 cm, 2-4 cm, and 4-10 cm) and the samples were analyzed, which included determining grain size distribution, water content, ignition loss, and oxidation-reduction potential. The data showed that the sediments at different monitoring sites responded to the impact of the typhoonrelated flood that struck the Tama River in early September of 2007 quite differently. Drastic changes in water and organic content were observed, especially at the deep offshore site, due to the typhoon.

Original languageEnglish
Title of host publicationProceedings of the 21st (2011) International Offshore and Polar Engineering Conference, ISOPE-2011
Pages999-1004
Number of pages6
Publication statusPublished - Sep 19 2011
Externally publishedYes
Event21st International Offshore and Polar Engineering Conference, ISOPE-2011 - Maui, HI, United States
Duration: Jun 19 2011Jun 24 2011

Publication series

NameProceedings of the International Offshore and Polar Engineering Conference
ISSN (Print)1098-6189
ISSN (Electronic)1555-1792

Other

Other21st International Offshore and Polar Engineering Conference, ISOPE-2011
CountryUnited States
CityMaui, HI
Period6/19/116/24/11

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Ocean Engineering
  • Mechanical Engineering

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  • Cite this

    Ariji, R., Yagi, H., Nadaoka, K., Nakagawa, Y., Ogawa, H., Simosako, K., & Shirai, K. (2011). Temporal and spatial variations of bottom sediment characteristics around the Tama River mouth in Tokyo Bay, Japan. In Proceedings of the 21st (2011) International Offshore and Polar Engineering Conference, ISOPE-2011 (pp. 999-1004). (Proceedings of the International Offshore and Polar Engineering Conference).