1. Port and Airport Research Institute, Yokosuka, Kanagawa Pref., Japan.
2. National Institute for Environmental Studies, Fukushima Branch, Miharu-Machi, Tamura-Gun, Fukushima Pref., Japan.
3. Graduate School of Engineering, Tohoku University, Sendai, Japan.
4. Civil Design and Materials, Faculty of Engineering, Kyushu University, Fukuoka, Japan.