Similar to 扇状地
0
0▲1 trends1
1▼-1 trends2
23
34
45
56
67
78
89
910
1011
11 (number)12
12 (number)13
13 (number)19
19 (number)40
40 (number)70
70 (number)100
100400
400 (number)700
700 (number)1000
1000 (number)1000000
1,000,000河口
River mouthガリ (地形)
Gully川底
Stream bed感潮河川
Tidal river0次谷
タールヴェグ
Thalweg