of;
Civil;
and;
Environment;
Engineering,;
Faculty;
of;
Engineering;
and;
Resource;
Science,;
Akita;
University,;
Akita;
City010-8502,;
Japan;
Survey;
Design;
Company;
Limited,;
Kashiwa;
City;
277-0005,;
Japan;
Nagoya;
Branch;
Co.,;
Ltd.,;
Nagoya;
City;
460-0003,;
Japan;