Funding for this research was provided by:
Japan Society for the Promotion of Science (JP17K06574, JP17K06575)
Chugoku Civil Engineering Foundation for Mutual Aid, Japan
Foundation for River and Watershed Environment Management, Japan (251212009)
Emberi Eroforrások Minisztériuma (ÚNKP-17-4/III)
Article History
Received: 6 February 2018
Revised: 29 April 2018
Accepted: 6 May 2018
First Online: 14 May 2018