seif dune मीनिंग इन हिंदी

अधिक: आगे

The wing will continue to grow under both wind conditions, thus producing a seif dune.
Seif dunes are thought to develop from barchans if a change of the usual wind direction occurs.
Seif dunes may thus form long rows whose parallel ridge lines follow the wind's direction.
In the sheltered troughs between highly developed seif dunes barchans may be formed because the wind is unidirectional.
The exposures of Permian sands exhibit complex cross-bedding that is believed to represent ancient seif dune deposits.
When there are two directions from which winds regularly blow, a series of long, linear dunes known as seif dunes may form.
On a seif dune the slipface develops on the side facing away from the strong wind, while the slipface of a barchan faces the direction of movement.

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