www.sea-technology.com October 2015 / st 47
sedimentary dynamics. It provides a fresh perspective to
read and understand the relief changes by the way of sedi-
mentary dynamics.
But there are ways to improve the sonar's maneuverabil-
ity. First of all, the assorted software, including 3DProgram-
mer and 3DProfler, have yet to be operational outside of
China. Secondly, the storage unit should be designed into
the USB interface to link to the PC terminal conveniently
instead of having to use a transfer box. Furthermore, the bat-
tery bin is very bulky and diffcult to seal because of the in-
ternational inconsistency of battery volume. Frequent open-
ing of the bin lid reduces watertight security.
Acknowledgments
Thanks to Marine Electronics Ltd. for providing their
specifcations and some sketch maps of the instrument used
in this project. Our research is sponsored by the Scientifc
Research Projects of Marine Public Welfare Industry (No:
201105001) and National Natural Science Foundation of
China (No: 41206046). ST
(Top) Changed reliefs within the period of an hour, showing
apparent differences. (Middle) Changed reliefs within a day,
showing more differences, as expected. (Bottom) Changed re-
liefs within a week, similar to changes within a day .
Dr. Jihong Shang is an associate professor at China's
Second Institute of Oceanography, State Ocean
Administration. He graduated from the Institute of
Oceanography, Chinese Academy of Sciences and re-
ceived his Ph.D. in 2008. His research is on tectonic
geomorphology and marine geodesy.