http://reply.papertrans.cn/2/107/10674/10674-31.png
http://reply.papertrans.cn/2/107/10674/10674-32.png
http://reply.papertrans.cn/2/107/10674/10674-33.png
http://reply.papertrans.cn/2/107/10674/10674-34.png
http://reply.papertrans.cn/2/107/10674/10674-35.png
Submitted on: 20 November 2009.
Revised on: 17 December 2009.
Accepted on: 26 January 2010.
___________________Geoscientific Instrumentation Methods and Data Systems