| Term: | Polygon trough |
| Definition: |
The narrow depression surrounding a high-centre polygon. NSIDCCryosphere
The narrow depression surrounding a high-centre polygon IPAPermafrost GCW |
| Term: | Polygon trough |
| Definition: | The narrow depression surrounding a high-centre polygon. |
| Term: | Polygon trough |
| Definition: | The narrow depression surrounding a high-centre polygon |