Natures Beautiful Wallpaper

Showing posts with label Rivers. Show all posts

8/14/12

Stream Introduction Parts And Very Very Beautiful Images Collection

Introduction:

A stream is a body of water with a current, confined within a bed and stream banks. Depending on its locale or certain characteristics.A stream may be referred to as a branch, brook, beck, burn, creek, kill, lick, rill, river, syke, bayou, rivulet, streamage, wash, run or runnel.

Streams are important as conduits in the water cycle, instruments in groundwater recharge, and corridors for fish and wildlife migration. The biological habitat in the immediate vicinity of a stream is called a riparian zone. Given the status of the ongoing Holocene extinction.Streams play an important corridor role in connecting fragmented habitats and thus in conserving biodiversity. The study of streams and water ways in general is known assurface hydrology and is a core element of environmental geography.

Parts Of Stream:

1. Bar:

A shoal that develops at the mouth of a river as sediment carried by the river is deposited as the current slows or is impedded by wave action. The Temperance River on Lake Superior's north shore is so named because it is one of the few rivers flowing into the lake that does not have a bar at its mouth.

2. Spring:

The point at which a stream emerges from an underground course through unconsolidated sediments or through caves. A stream can, especially with caves, flow above ground for part of its course, and under ground for part of its course.

3. Source:

The spring from which the stream originates, or other point of origin of a stream.

4. Headwaters:

The part of a stream or river proximate to its source. The word is most commonly used in the plural where there is no single point source.

5. Confluence:

The point at which the two streams merge. If the two tributaries are of approximately equal size, the confluence may be called a fork.

6. Bifurcation:

A fork into two or more streams

7. Run:

A somewhat smoothly flowing segment of the stream.

8. Pool:

A segment where the water is deeper and slower moving.

9. Riffle:

A segment where the flow is shallower and more turbulent.

10. Channel:

A depression created by constant erosion that carries the stream's flow.

11. Floodplain:

Lands adjacent to the stream that are subject to flooding when a stream overflows its banks.

12. Stream bed:

The bottom of a stream.

13. Gauging station:

A point of demarkation along the route of a stream or river, used for reference marking or water monitoring.

14. Thalweg:

The river's longitudinal section, or the line joining the deepest point in the channel at each stage from source to mouth.

15. Wetted perimeter:

The line on which the stream's surface meets the channel walls.

16. Knickpoint:

The point on a stream's profile where a sudden change in stream gradient occurs.

17. Waterfall or cascade:

The fall of water where the stream goes over a sudden drop called a nickpoint; some nickpoints are formed by erosion when water flows over an especially resistant stratum, followed by one less so.

18. Mouth:

The point at which the stream discharges, possibly via an estuary or delta, into a static body of water such as a lake or ocean.

Images:

Beautiful Image Of Stream

6/8/12

Brahmaputra River And Its Beautiful Images Collection

Description:

The river brahmaputra is one of the major river in the world. It originates from Mansarovar near Mount Kailash in the Himalayas and flows via Tibbet, China, India and Bangladesh to Bay of bangal. The total length it travels from Himalayans to the Bay is 2900 Km. In Tibbet the river is known as 'Tsangpo'. It follows the great Himalayans in its course till India with an avergae height of 4000 meters.

It enters India in Arunachal Pradesh where it is called 'Siang'. It then flows down to the plains of Assam where it is called Dibang. It joins with other two giant rivers Dibang and Lohit. There are many tributaries which joins Brahmaputra on both northern and southern bank of the river in Assam. With all it's tributaries, the river creates the fertile Brahmaputra Valley of Assam. After Assam Brahmaputra enters Bangladesh where it flows for 240 kms to meet Ganges. It is called Jamuna there and finally flows into the Bay of Bangal. The Brhmaptura river is the lifeline of the all the people living in Assam and Bangladesh.

Images:

Brahmaputra River Image

Brahmaputra River Image

Brahmaputra River Image

5/15/12

Rivers Beautifull Natural Images Collection

Description:

Rivers have been used as a source of water. A river is a natural water course. Rivers have been used for navigation for thousands of years.

Flooding is a natural part of a river's cycle. The majority of the erosion of river channels and the erosion and deposition on the associated flood plains occur during flood stage. In many developed areas, human activity has changed river channel form, altering different magnitudes and frequencies of flooding. Some examples of this are the building of levees, the straightening of channels, and the draining of natural wetlands.

Images