prashaant mahaasaagar

prashaant mahaasaagar

prashaant mahaasaagar America aur Asia ko pruthak karta hai. yeh vishv ka sabse bada tatha sabse gahra mahaasaagar hai. tulanaatmak bhaugaulik adhyayan se pata chalta hai ki is mahaasaagar mein pruthvi ka bhaag kam tatha jaleeya kshetr adhik hai.

parichay

vaigyaanik anveshakon tatha saahasik naavikon dvaara is mahaasaagar ke vishay mein gyaan praapt karne ke anek prayatn kiye gaye tatha ab bhi iska adhyayan jaari hai. sarvapratham petarabyuk mahodaya ne iske baare mein pata lagaana aarambh kiya. iske pashchaat bailaboaa, maagemenadaanya, hauris (Horace), kuku aadi yooropiynon ne prayatn kiya. dviteeya vishv mahaayuddh samaapt hone par sanyukt raashtra ne iske baare mein kharch ke nimitt anek prayaas kiye, jo safal vyaapaar tatha pooainji viniyog ke vikaas ke liye laabhadaayak siddh hue. ab bhi nirantar prashaant mahaasaagar ke garbh ke baare mein gyaan praapt karne ke liye anveshan jaari hain.

iska kshetrafal 6,36,34,000 varg meal, arthaat atalaantik mahaasaagar ke dugune se bhi adhik hai. yeh filipeens tat se lekar panaama 9,455 meal chauda tatha bering jaladamaroomadhya se lekar dakshin antaarkatika tak 10,492 meal lamba hai. yeh samast bhoobhaag se la meal adhik kshetr mein faila hai. iska uttari kinaara keval 36 meal ka bering jaladamaroomadhya dvaara aarkatik saagar se juda hai. iska itne bade kshetr mein faile hone ke kaaran yahaaain ke nivaasi, vanaspati, pashu tatha manushyon ki rahan-sahan mein pruthvi ke anya bhaagon ke saagaron ki apeksha badi vibhinnata hai. prashaant mahaasaagar ki ausat gaharaai lagbhag 14,000 foot hai tatha adhiktam gaharaai lagbhag 35,400 foot hai, tab gvaim aur mindaano ke madhya mein hai. yeh mahaasaagar atalaantik mahaasaagar ka sahavarti hai.

iske poorvi evam pashchimi kinaaron mein bada antar hai. poorvi kinaare par parvaton ka kram faila hai, ya samudri maidaan bahut hi sainkare hai. isi kaaran yahaaain achhe achhe bandaragaahon ka abhaav hai tatha sabhyata ki bhi adhik unnati naheen ho pai hai. bering jaladamaroomadhya barf se jama rahata hai, jisse yaataayaat mein baadha padti hai. iske vipreet is pashchimi kinaare par parvat naheen hai. balki kai dweep, khaadiyaaain, praayadveep tatha delta hain. pashchimi kinaare par Japan, filipeens, hindeshiya aadi ke lagbhag 7,000 dweep hain. is kinaare par vishv ki badi badi nadiyaaain ismein girti hain, jinke deltaaon mein ghani janasankhya basi hai tatha achhe achhe bandargaah hain.

prashaant mahaasaagar ki aakruti tribhujakaar hai. iska sheersh bering jaladamaroomadhya par hai, jo ghode ke khur ki aakruti ka hai aur jvaalaamukhi parvaton tatha chhoti chhoti pahaadiyon se ghira hua besin banaata hai. amareeka ka pashchimi tat pyoojet saaund (Puget Sound) se alaaska tak barfeeli chattaanon se yukt hai. uttar ki or alyooshain dweep ka vruttakhand hai, jo saaiberiya ke sameepavarti bhaagon se hota hua bering saagar tak chala gaya hai. mukhya dweep prashaant mahaasaagar ke pashchimi kinaare se hokar kaimachaitaka praayadveep ke uttar aur Australia ke uttar-poorv ki or faile hue hain. ye hindeshiya ke vruttakhand se jud jaate hain. bhoovijnyaaaniyo ne is baat ka pata lagaana chaaha ki is mahaasaagar ka nirmaan praarambh mein kaise hua, lekin ve koi bhi sarvamaanya siddhaant na nikaal paae.

jvaar bhaata yahaaain ki mukhya visheshata hai. yeh naukaaon ki yaatra ko prabhaavit karta hai. iska kram is mahaasaagar ke vibhinn taton par ek sa naheen hai. iska prabhaav aur oochaai kaheen adhik aur kaheen bahut kam hoti hai, jaise Korea ke tat par iski ooainchaai bhinn-bhinn sthalon par lagbhag 15 aur 30 foot ke beech mein hoti hai, jabki alaaska tat par yahi ooainchaai lagbhag 45 foot tatha skaigane par 30 foot ke lagbhag tak hoti hai.

prashaant mahaasaagar ka dharaatal praaya: samatal hai. suvidha ki drushti se ise poorvi aur pashchimi do bhaagon mein baaainta ja sakta hai. poorvi bhaag dveeparahit tatha amareeka ke upaant bhaag mein hai. iska adhiktar bhaag 18,000 foot gahra hai. iska adhiktar gaharaai kam (13,000 foot) hai, tatha jisko elbaatraus pathaar (albatross plateau) kehte the, dakshini amareeka ke pashchimi bhaag mein sthit hai. is chabootare ki anya shaakhaaeain uttar ki or riyaatat tatha pashchim mein tooaamotoo, dveepasamooh, maarakesas (Marquesas) dweep tatha dakshin mein antaarkatika tak faili hain.

is saagar ki satah, mukhyataya pashchim mein, kai badi badi lambi khaaiyon (deep) se bhari padi hai. kuchh mahatvapoorn khaaiyon ke naam tatha gaharaaiyaaain is prakaar hain tyooseearora (Tusearora) 32,644 foot, ranpa (Rampa) 34, 626 foot, nairo (Nero) 32,107 foot, eldrich (Aldrich) 30,930 foot aadi. uttari prashaant mahaasaagar mein sabse adhik gaharaai alyooshain dweep ke paas pai jaati hai, jo 25,194 foot hai.

prashaant mahaasaagar ka vah bhaag, jo kark rekha tatha makar rekha ke madhya mein hai, madhya prashaant mahaasaagar kaha jaata hai. kark ke uttari kshetr ko uttari prashaant mahaasaagar tatha makar ke dakshin sthit bhaag ko dakshini prashaant mahaasaagar ke naam se sambodhit kiya jaata hai. antararaashtreeya jal sarvekshan sangathan (International Hydrographic Organization) dvaara ise do bhaagon mein vibhkt karne ke liye bhoomadhya rekha ka sahaara liya gaya hai. 1500 pan॰ de. poorvi prashaant ke unheen bhaagon ke liye prayukt hota hai jo bhoomadhya rekha ke dakshin mein hai. iski khoj spenavaasi baibaio (Babbao) ne ki tatha isne prashaant mahaasaagar ko panaama naamak sthaan par dakshini saagar naam diya.

prashaant mahaasaagar ke uttar, poorv evam pashchim se hota hua bhoopatal ka sabse kamjor bhaag gujarata hai. iske kaaran yahaaain par adhiktar bhookamp evam jvaalaamukhiyon ke udgaar hua karte hain. abhi bhi yahaaain 300 aise jvaalaamukhi parvat hain, jinmein se nirantar udgaar hua karte hain. is mahaasaagar mein chhitke dveepon ka udbhav pravaalavalaya, jvaalaamukhi athva bhookanpon ke dvaara hua hai