atalaantik mahaasaagar

globe par andh mahaasaagar ki sthiti
pruthvi ke mahaasaagar
World ocean map.gif

andh mahaasaagar ya atalaantik mahaasaagar us vishaal jalaraashi ka naam hai jo Europe tatha Africa mahaadveepon ko nai duniya ke mahaadveepon se pruthak karti hai. kshetrafal aur vistaar mein duniya ka doosare number ka mahaasaagar hai jisne pruthvi ka 1/5 kshetr gher rakha hai. is mahaasaagar ka naam greek sanskruti se liya gaya hai jismein ise nakshe ka samudra bhi bola jaata hai. is mahaasaagar ka aakaar lagbhag angreji akshar 8 ke samaan hai. lanbaai ki apeksha iski chaudaai bahut kam hai. aarkatik saagar, jo bering jaladamaroomadhya se uttari dhruv hota hua spitsabarjen aur greenalaind tak faila hai, mukhyat: andhamahaasaagar ka hi ang hai. is prakaar uttar mein bering jal-damaroomadhya se lekar dakshin mein kotsalaind tak iski lanbaai 12,810 meal hai. isi prakaar dakshin mein dakshini jaarjiya ke dakshin sthit vaidal saagar bhi isi mahaasaagar ka ang hai. iska kshetrafal iske antargat samudron sahit 4,10,81,040 varg meal hai. antargat samudron ko chhodkar iska kshetrafal 3,18,14,640 varg meal hai. vishaalatam mahaasaagar na hote hue bhi iske adheen vishv ka sabse bada jalapravaah kshetr hai. uttari andhamahaasaagar ke prushthatal ki lavanata anya samudron ki tulana mein paryaapt adhik hai. iski adhiktam maatra 3.7 pratishat hai jo 20°- 30° uttar akshaanshon ke beech vidyamaan hai. anya bhaagon mein lavanata apekshaakrut kam hai.

anukram

nitl

saagar ki gaharaaiyaan dikhaata maanachitr

andh mahaasaagar ke nitl ke praarambhik adhyayan mein jalapot chaileinjar (1873-76) ke anveshan abhiyaan ke hi samaan anek anya vaigyaanik mahaasaagareeya anveshanon ne yog diya tha. andh mahaasaagareeya vidyut kebulon ki sthaapana ke hetu aavashyak jaankaari ki praapti ne is prakaar ke adhyaayon ko vishesh protsaahan diya. iska nitl is mahaasaagar ke ek koot dvaara poorvi aur pashchimi droniyon mein vibhkt hai. in droniyon mein adhiktam gaharaai 16,500 feet se bhi adhik hai. poorvokt samudraantar koot kaafi ooaincha utha hua hai aur aaisalaind ke sameep se aarambh hokar 55°aadigri dakshin akshaansh ke lagbhag sthit bove dweep tak faila hai. is mahaasaagar ke uttari bhaag mein is koot ko daalafin koot aur dakshin mein chaileinjar koot kehte hain. is koot ka vistaar lagbhag 10,000 foot ki gaharaai par atoot hai aur kai sthaanon par koot saagar ki satah ke bhi oopar utha hua hai. ajors, seint paul, aseinshan, tristaaain the kunha aur bove dweep isi koot par sthit hai. nimn kooton mein dakshini andh mahaasaagar ka vaalafish koot aur Rio grand koot, tatha uttari andh mahaasaagar ka vaaivil taamasan koot ullekhaneeya hain. ye teenon nimn koot mukhya koot se lanb disha mein faile hain.

Portugal ke pashchimi tat se andh mahaasaagar ka drushya

E. kosana (1921) ke anusaar is mahaasaagar ki ausat gaharaai, antargat samudron ko chhodkar, 3,926 meter, arthaat 12,839 foot hai. iski gyaat adhiktam gaharaai, 8,750 meter arthaat 28,614 foot hai aur yeh gini sthali ki portoriki droni mein sthit hai.andh mahaasaagar ki mukhya sthali ka 74 pratishat bhaag talaplaavi nikshepon (pelaajik dipaajits) se dhaka hai, jismein nanhein nanhein jeevon ke shalk (jaise globijraaina, teropaud, daayaatam aadi ke shalk) hain. shesh 26 pratishat bhaag par bhoomi par utpann hue avasaadon (sedimeints) ka nikshep hai jo mote kanon dvaara nirmit hai.

prushthadhaaraaeain

saagar ki prushthadhaaraaen:
jaamuni:gahan saagar dhaaraaen
neeli:satahi dhaaraaen

andh mahaasaagar ki prushthadhaaraaeain niytavaahi pavanon ke anuroop bahti hain. parantu sthal khand ki aakruti ke prabhaav se dhaaraaon ke is kram mein kuchh antar avashya aa jaata hai. uttari andh mahaasaagar ki dhaaraaon mein uttari vishuvateeya dhaara, gulf streem, uttari andh pravaah, kaineri dhaara aur laibrodor dhaaraaeain mukhya hain. dakshini andh mahaasaagar ki dhaaraaon mein dakshini vishuvateeya dhaara, Brazil dhaara, faakalaind dhaara, pachhavaaain pravaah aur baingula dhaaraaeain mukhya hain.

sandarbh

baahari kadiyaaain