डेल्टा  हिन्दी देवनागरी में पढ़ें।

delta pray: us bhoobhag ko kaha jata hai, jo nadi dvara lae ge avasadon ke snchayan se nirmit hata hai. visheshat: nadi ke muhane par, jahan vah kisi samudr athava jhil men girati hai. is bhoobhag ka akar sadharanat: tribhuj jaisa hota hai.

nirman tatha vistar

delta ka nirman tatha isaka vistar mukhyat: sagar athava jhil men pravahit dharaon ke veg par nirbhar hai. vegavati dharaen athava oonche jvar, jo nadi dvara ekatrit avasadon ko tat se door le jate hain, delta nirman men badhak hote hain aur bahudha lnbe tatiy dvipon, baluee bhitti ya baluee snlagn bhitti[1] ka nirman karate hain athava avasadon ko sagar nital par phaila dete hain. isake viparit dharaon evn jvaron ki kshinata delta nirman men sahayak hai. nadi dvara lae ge avasadon ka bahooly bhi mahatvapoorn sahayak dasha hai. jvar rahit room sagar tatha meksikon ki khadi men delta ki prachurata hai. samudr tat ke ghnsane se bhi delta nirman men badha tatha khule muhanon[2] ke nirman men sahayata milati hai.

kanon ka snchayan

nadi ke jal ki gati men kramash: nyoonata ane ke karan delta kshetron men sarvapratham bade kanon ka aur ant men chhote kanon ka snchayan hota hai. ati sookshm kan dharaon dvara samudr men door tak pravahit hote hain. is prakar delta ke samudravarti bhag men chhote kan tatha prishth bhag men bade kan milate hain.

shakhanadi ka nirman

avasadon ki adhikata tatha pravah veg ke mnd hone ke karan delta kshetr men nadi ki mukhy dhara anek shakhaon men vibhakt ho jati hai, jinhen 'shakhanadi'[3] kahate hain. nirntar avasadon ke snchayan se delta bhag kramash: samudr ki or agrasar hota rahata hai. gnga, brahmaputr, hrang ho, nil, po aur misisipi nadiyon ke delte vishv ke kuchh mahatvapoorn delton men se hain.

udaharan

nil nadi ka delta isaka sundar udaharan hai. jab koee pahadi nadi samatal maidani athava pathari pradesh men pahunchati hai to jal ke veg men akasmik kshinata ke karan bhi parvat pad par avasadon ke kuchh bhag ka nikshepan hota hai. ye nikshep sadharanat: tribhujakar hote hain. inhen 'jalaudh pnkha'[4], 'shnku delta'[5] athava 'pnkha delta'[6] kahate hain.


panne ki pragati avastha
adhar
prarambhik
madhyamik
poornata
shodh

tika tippani aur sndarbh

  1. sand spit
  2. estuaries
  3. distributary
  4. alluvial fan
  5. cone delta
  6. fan delta

snbndhit lekh

varnamala kramanusar lekh khoj

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