Directional modelling of extreme wind speeds.
针对标准极端风速模型忽略风向的问题，将风速的极端特性建模为方向的函数，并引入空间极端值技术处理方向间的依赖关系，为建筑风灾风险评估提供更精确的方法。
SUMMARY Extreme value models play an important role in assessing the risk to buildings caused by high wind speeds. However, standard procedures take no account of the directional behaviour of the wind. In this paper the extremal properties of the wind process are modelled as a function of direction. This requires the adaptation of techniques which have recently been developed for the study of spatial extremes. In particular, fitting techniques are required which account for dependence across directions, and, for joint probability statements, a model for the dependence itself is required.