Paleohydrography

Extinct surface hydrography: area characterised by old abandoned channels observable for chromatic or texture differences or humidity, aerial photos, micro-reliefs, historical photos, morphology, etc. Area with abandoned meanders: area close to a watercourse, derived from surveys, orthophotos or historical cartography.Paleodosso fluviale: morphology elongated and slightly elevated compared to the surrounding altitudes representing the compensated fluvial apparatus of canal, banks, meander bars and deposits of crevasses, from microrelief or from survey in the countryside or from bibliography.消亡地表水文地貌（Extinct surface hydrography）：指以因色彩、纹理差异或湿度特征可被观测到的废弃古河道为典型特征的区域，可通过航空影像、微地形、历史影像、地貌形态等途径识别。 废弃曲流区域（Area with abandoned meanders）：指邻近天然水道的区域，可通过实地勘测、正射影像或历史制图资料推导确定。 古河流沉积岗地（Paleodosso fluviale）：指相较于周边海拔呈长条状且略微抬升的地貌形态，代表由渠槽、岸堤、曲流沙坝及决口沉积物组成的补偿性河流地貌系统，相关信息可通过微地形、野外实地勘测或文献资料获取。