车尔臣河灌区2030年灌溉需水量预测

水资源预测对灌区生产发展具有重要作用.分析了车尔臣河灌区基本概况及流域水资源利用现状,根据灌区灌溉制度及渠系用水系数,采用能量平衡法,对灌区2030年灌溉需水量进行了预测,为灌区后续发展和水资源调度提供了重要技术支撑.     

Locating Wulei/Qiemo Ancient Cities with Spatial Analysis Together with the Assessment of the Long\|wavelength Radar in Subsurface Archaeology

The lost cities of Wulei (the Safeguard City in the Western Region) and Qiemo in Han Dynasty are important ruins described in several historical documents.In this study,a spatial analysis was proposed to digitally locate those two ancient cities by using the distance records from Book of Han.Results indicate that Wulei is located at the northeast of Yangxia Oasis and Qiemo is located at a desert area 100 km north from the modern Qiemo County.Then,a quantitative estimation of Synthetic Aperture Radar (SAR) in subsurface penetration was conducted to evaluate the archaeological performance of ALOS PALSAR-2 (Phased Array Type L-band Synthetic Aperture Radar\|2) data.Simulation results show that the penetration of L\|band SAR is limited in the hot\|spot of Wulei,hampering the direct detection of its ruin.Thereby,the detection of ancient channels,roads and beacon towers adjacent in conjunction with the buffering analysis could be the alternative solution.Nevertheless,the penetration capability of L-band SAR is promising (up to more than 2 m) in the suspected region of Qiemo ruin,implying the potential of PALSAR\|2 data for the lost city prospection.