Evaluation of the natural recovery in an artificially modified geography

Author

Akimoto, K. ; Shimasaki, H. ; Yakita, Koichi ; Hokamura, T. ; Takeuchi, T. ; Shibata, K. ; Shibata, M. ; Nakano, K. ; Sannoh, M. ; Yoshizu, K. ; Sato, K.

Author_Institution

Kumamoto Univ., Kumamoto, Japan

fYear

2011

fDate

5-8 April 2011

Firstpage

1

Lastpage

7

Abstract

The purposes of this study were to obtain geographical and geological information before the dyke of the Isahaya Land Reclamation Project is opened, and to evaluate the natural recovery in the excavated area in Isahaya Bay. The presence of no new sediment within the ditches suggests that the natural return to the original geography is difficult after being artificially modified. However, the presence of many fish in the ditches suggests that the hollows are not necessarily a cause of the occurrence of low oxygen water, and that the hollows do not need any special measures to recovery geographically.

Keywords

bathymetry; ocean chemistry; oceanographic regions; seawater; Isahaya Bay; Isahaya Land Reclamation Project; artificially modified geography; ditch; dyke; excavated area; fish; geographical information; geological information; low oxygen water; natural recovery evaluation; sediment; Frequency measurement; Geography; Grain size; Sea measurements; Sediments; Surfaces; Tides;

fLanguage

English

Publisher

ieee

Conference_Titel

Underwater Technology (UT), 2011 IEEE Symposium on and 2011 Workshop on Scientific Use of Submarine Cables and Related Technologies (SSC)

Conference_Location

Tokyo

Print_ISBN

978-1-4577-0165-8

Type

conf

DOI

10.1109/UT.2011.5774097

Filename

5774097