Spending degrees of freedom in a economy & extreme snow depth: a case study of building a model in Tianshan, China

Serious loss of human life and property by heavy snowfall in many middle and high Xijiang almost every winter. We apply annual maximum snow depth (AMSD) and snowfall data from the Tianshan Snow-cover & Avalanche Research Station (TSAR station in Xinjiang, Northwest China) collected during the last 28 winters (1978 to 2005) to temporal trends of annual maximum snow depth. The goal of the present article is to statistical analysis of extreme values that is applied to snow depth data from Tianshan Snow-cover & Avalanche Research Station. There were no significant differences between socioeconomic of snow depth, under affects socio-economic development from 1961, but permanently snow depth data (1978-2005) showed significantly impact on socio-economic development. Annual maximum snow depth contents necessary to meet return levels for 10, 25, 50, and 100 years of selected quality parameters were estimated. The research shows a decrease in extreme snow depth. This may would need to be increased by the observed decrease in the snow ratio due to increasing air temperatures. Further research is also needed to develop economy systems that socioeconomic and also improve the quality of snow depth data in the study area.