अजय नदी की उत्पति ३०० मीटर की उचाई से देवघर के दछिण, झारखण्ड से हुआ है। पश्चिम बंगाल में यह नदी चित्तरंजन के सिमजूरी गांव के नजदीक आती है। अजय नदी की कुल लम्बाई लगभग २८८ किलोमीटर है। यह नदी कटवा के नजदीक स्थित भगीरथी नदी से मिल जाती है। इसकी कुल अपवाह प्रणाली क्षेत्रफल ६००० वर्ग किलोमीटर है ।
One day ‘Geography workshop’ organized for students of class X, XI and XII convening by Dr. Rajesh Kumar Mahato in the beautiful campus of N.D. Rashtriya Vidyalaya, Sitarampur on 11/12/2016 with the collaboration with ISDR (Institute for Social Development and Research), Ranchi. There were different types of activities related with practical geographical knowledge and specially design under W.B.B.S.E., W.B.C.H.S.E. and C.B.S.E. based syllabus pattern. This blogging is for Geography lovers.
Monday, February 22, 2021
अजय नदी की जलीय स्थलाकृतियां
जलीय स्थलाकृतियां: बहता हुआ जल द्वारा निर्मित स्थलाकृतियो को जलीय स्थलाकृति कहा जाता है जिनमे जलगर्तिकाये, जलछीप्रिकाये, बालूका स्तर, रिपल्स, तटकटाव, नालिकाये, जलप्रपात एवं अनेको शुक्ष्म जलीय स्थलाकृतियों का निर्माण होता है ।
जलगर्तिकाये: जल गर्तिकाये नदी के किनारों अथवा नितलीय सतह पर एक परिपत्र या बेलनाकार छेद है जो पानी और घर्षण के बल द्वारा उत्पादित है। इसके निर्माण में चट्टानी संधियों एवं जल गतिक्रिया की भूमिका महत्वपूर्ण होती है। चूकि अजय नदी में ग्रेनाइट जैसे चट्टानों की अधिकता है जिसके कारण यहाँ जल गर्तिकाओ की भरमार है। जैसा की हम देख रहे है कि इस जलगर्तिका में बेसाल्ट चट्टान की संधियों के सहारे जल गर्तिकाओ का निर्माण किया है एवं बहुत सारे चट्टानों में यह बनने की प्रारंभिक अवस्था में है। इन जल गर्तिकाओ में चट्टानी टुकड़े फसे हुए होते है जो दरअसल में जल गर्तिकाओ की गहराई को बढ़ाने में मदद करती है।
अजय नदी में स्थित जल गर्तिकाये
जलछीप्रिकाये: जल प्रवाह की सतह से ऊपर उजागर हुए कुछ चट्टानों के साथ नदी में पाए जाते हैं। इसमें चट्टानों के ऊपर और चारों ओर पानी बहता है, हवा के बुलबुले इसके साथ मिश्रित हो जाते हैं और सतह के कुछ हिस्से को एक सफेद रंग प्राप्त होता है, जिसे "व्हाईटवेटर" कहा जाता है। जलछीप्रिका के नीचे बिस्तर सामग्री अत्यधिक प्रतिरोधी होती है ठोस चट्टानों में बहने वाली बहुत छोटी धाराओं में उनकी लंबाई बहुत अधिक होती है जलछीप्रिकाये जल के वायु प्रवाह के कारण बेहतर पानी की गुणवत्ता वाली होती हैं।
अजय नदी में स्थित जलछीप्रिकाये
We are active on -
Facebook : https://www.facebook.com/
YouTube: https : https://www.youtube.com/channel/UCY2pFE8rjZX9NUSsaNXgK6Q?sub_confirmation=1
Email id : mahtolu@gmail.com
Google plus : https://plus.google.com/
ResearchGate : https://www.researchgate.net/home?ref=home
Blog : https://thegeographia.blogspot.com/
RIVER SYSTEM AND LANDFORMS UNDERSTANDING TROUGH THE MODEL
In this article we will understand River System and associated landforms. Three types of landforms are associated with a river system i.e., Glacial landforms, Fluvial landforms and Coastal landforms. We tried to elaborate all kind of landforms which forms through Glacier, River water and Coastal water in very short.
Before looking at specific river landforms it is important to look at how the river channel itself changes downstream. We have already looked at how the river channel in the upper course is shallow and narrow with large bedload that disrupts the efficiency of flow. The bedload is derived mainly from mass movements from the valley sides and eroded rock from the bed and banks of the channel. The valley profile is really just an extension of the channel itself; it follows a symetrical v-shaped form. This narrow valley and river channel is caused by vertical erosion as a result of the high potential energy of the river. As the river stretches downstream both its velocity and discharge increase. Its velocity increases due to more efficient flow and reduced channel roughness. The discharge increases because the catchment area of the drainage basin has increased along with the number of tributaries feeding water into the river. As a result of this increased discharge the river, in its attempt to balance its energy erodes laterally, widening as well as deepening the river channel. At times, the river will exceed the banks and flood across the flatter section of the valley, initially in a youthful phase a floodplain may be eroded out of the valley. Over time a flat extended floodplain devlops either on both sides of the river or dominant on one side. Again in an effort to balance its energy and discharge the river will meander, creating asymetrical river channels; characterised by steep river cliffs on the outside bend of the meander and gentle slip-off slopes on the inside bend of the meander. Unregulated floodplains support permanent and semi-permanent wetlands. Further downstream the floodplain grows in size on both sides of the river as the river channel grows in width and depth. The channel shape becomes once again more symetrical as the channel widens. The meander length and meander belt both increase in size and the erosion of the outside bend slows down.
All copywrite belongs to @THE GEOGRAPHIA, 2021
If you have any kind of questions please don't hesitate to contact to ....
Dr. Rajesh Kumar Mahato,
mahtolu@gmail.com
Assistant Teacher (PGT) in Geography,
N. D. Rashtriya Vidyalaya (H.S.), Sitarampur,
Paschim Burdwan, West Bengal, INDIA
Expertize in FLUVIAL GEOMORPHOLOGY, CLIMATE CHANGE & GIS
Click for Subscribe the Channel https://www.youtube.com/channel/UCY2p...
We are connected with FACEBOOK, INSTAGRAM, TWEETER etc..
Subscribe to:
Posts (Atom)
MAJULI ISLAND - WORD'S BIGGEST RIVER MADE ISLAND IN BRAHMPUTRA
Majuli Island - Mājuli or Majoli is a river island in the Brahmaputra River, Assam and in 2016 it became the first island to be made a dist...
-
Parasnath hill - elevation ... 1365 meter (Photography from another top point) Parasnath is located towards the eastern end of the Chota N...
-
LGBT RALLY IN MILAN, ITLAY (EUROPE) LGBT rally in Milan, Italy is a type of parade and festival held at the every June each year in Milan Ci...
-
A glacial lake outburst flood (GLOF) is a type of outburst flood that occurs when the dam containing a glacial lake fails. An event simi...