HIMALAYAN DRAINAGE-
- Antecedent drainage i.e. Himalayan rivers are older than lesser Himalayas and shiwaliks (older than the
structures they cut across).
- Nature of flow is perennial- fed by rain and melting glaciers.
- Geologically young
- Long courses
- Flow through lose alluvial soils of northern plains
- Form deep valley and gorges due to intensive erosion.
- Generate large quantities of sediment.
- Cause annual flooding.
- Nature of river course is quiet changing, meandering , forming ox-bow lakes, high waterfalls, deeper basins
and large catchment areas and form deltas.
PENINSULAR DRAINAGE-
- Super-imposed drainage i.e. regional structures are older than the river valleys that cut through them.
- Nature of flow is seasonal- during sw monsoons.
- Geologically older.
- Shorter courses.
- Flow through hard granitic soils of peninsular India.
- Shallow graded valleys with little erosion.
- Shallow valleys, small waterfalls, deltas and estuaries.
- Antecedent drainage i.e. Himalayan rivers are older than lesser Himalayas and shiwaliks (older than the
structures they cut across).
- Nature of flow is perennial- fed by rain and melting glaciers.
- Geologically young
- Long courses
- Flow through lose alluvial soils of northern plains
- Form deep valley and gorges due to intensive erosion.
- Generate large quantities of sediment.
- Cause annual flooding.
- Nature of river course is quiet changing, meandering , forming ox-bow lakes, high waterfalls, deeper basins
and large catchment areas and form deltas.
PENINSULAR DRAINAGE-
- Super-imposed drainage i.e. regional structures are older than the river valleys that cut through them.
- Nature of flow is seasonal- during sw monsoons.
- Geologically older.
- Shorter courses.
- Flow through hard granitic soils of peninsular India.
- Shallow graded valleys with little erosion.
- Shallow valleys, small waterfalls, deltas and estuaries.
1 comments:
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