1. Assistant Professor, Dept. of Applied Mechanics, Bengal Engineering and Science Univ., Shibpur, Howrah 711103, India; formerly, Postdoctoral Research Fellow, National Institute of Water and Atmospheric Research (NIWA), P.O. Box 8602, Christchurch, New Zealand.
2. Professor, Dept. of Engineering, Univ. of Aberdeen, Aberdeen, AB24 3UE, U.K. E-mail: v.nikora@abdn.ac.uk
3. Manager of Ecosystem Modeling Group, National Institute of Water and Atmospheric Research (NIWA), Hamilton, New Zealand.