新疆百里风区地形与大风的关系

大风是影响新疆交通运输安全生产的主要气象灾害之一,其中最典型的是百里风区,代表站为十三间房,由于特殊的地形地貌,该区域风力强劲,大风频繁。根据山口的狭管效应和冷空气越山后流波风的理论,利用近2年的实测风资料,对百里风区有强风出现的情况进行了估算和实例的验算,结果表明在冷空气入侵的过程中,上游木垒站与十三间房站风速存在着很好的延时9～10小时正相关。

The Relation Between the Strong Wind Region Along One Hundred Kilometer of Railway and the Topography in Xinjiang

Strong wind is one of the main meteorological disasters affecting the safety in transport and production in Xinjiang, especially in the Bailifengqu area (1.e. the strong wind regions along one hundred kilometer of railway). Because of special type of topography and geomorphy, Shisanjianfang Railway Station is a representative station where the wind is so strong and frequent. According to the narrow pipe effect of mountain pass and the theory of drainage winds after the cold air crosses the mountain, using the actual data measured in recent 2 years, the situations of strong wind appearance were estimated and validated in Bailifengqu area. The results show that in upstream the process of cold air invasion, there is a just 9-10 h delay correlation in wind velocity between upstream Mulei Station and downstream Shisanjianfang Station.