Scientists think the best explanation for the gullies is that seasonal melting of nearby water ice creates slurries of sand and liquid water, which flow down the crater's dunes.
Terraced wetlands and retention ponds were created to reduce peak water flow and regulate the seasonal rainwater.
建造梯田湿地和陂塘系统,以削减洪峰流量,调节季节性雨水。
3
A general expression of seasonal ARIMA models with one periodicity is given, and procedures to model and predict traffic flow using seasonal ARIMA models are provided.