Coastal Physiographic Features - Ria

This is a shapefile of the coastal physiographic feature 'Ria'. The polygons represent drowned river valleys of south-west Britain. Often with a greater presence of rock and more marine in character than estuaries. This is the definition taken from Annex I habitat 1160 - Large shallow inlets and bays.

本数据集为英国西南部沿海地理特征‘里亚’的矢量地理信息数据。其中，多边形描绘了沉没的河流谷地。相较于河口地带，该区域通常岩石分布更为密集，海洋特征更为显著。此定义源自附录I中的栖息地分类1160 - 大型浅水海湾。” }