thamantaasett nadhi

5000 varshangalkk munbu aafrikkan eerppamulla kaalaghattatthil padinjaaran aafrikkayiloode ozhukunnathaayi vishwasikkappedunna oru valia paleorivaraanu thamantaasett nadhi. thamantaasett nadeethadatthe innathe eshyayile ganga-brahmaputra nadeethadavumaayi thaarathamyappeduthaamennu karuthappedunnu.
poshakanadikal.
padinjaaran vasham
kizhakk vasham
avalokanam.
purathana kaalath thekkan atlas parvathanirakalileyum innathe aljeeriyayile hogger malanirakalileyum srothassukalil ninnaan thamantaasett sahaarayiloode ozhukiyethiyathennu karuthappedunnu.
mourittaaniyayude theerathu sthithi cheiyunna cap timiris malayidukkilekku ozhukunna nadhi moonnu kilometer aazhathilulla vellathilaanu sthithicheyyunnathennum chila sthalangalil <aii. dii. 1> veethiyullathaanennum karuthappedunnu.
nadiyude saannidhyam madhya aafrikkayil ninnu middle eest, europe, eshya ennividangalilekkulla manushya kudiyettatthil vishalamaaya prathyaaghaathangal srishtichathaayi karuthappedunnu. munbu, abhayaarthikalillaatha sahara marubhoomi europilekku kudiyerunnathinulla padinjaaran paathaye pravarthanakshamamallaathika vishwasikkappettirunnu.
aafrikkan eerppamulla kaalaghattatthil, bhoomiyude bhramanathinte munkoor kaaranam undaakunna kalavastha aandolanangalil purathana nadhi sajeevamayathaayi gaveshakar vishwasikkunnu.
ghattam ghattamaayulla shreni tharam ell-baand synthetic apperchar radar (palser) enna japanese bhramana upagraha samvidaanam upayogichaanu paleorivarine kandethiyathu. microwave sensing upayogichu, palsarinu saharan manalinu thaazhe kaananum phoosil jalam ippozhum kandethaanum kazhiyum.
samakaalika nadee samvidaanangalumaayum avayumaayi bandhapetta samskaarangalumaayum thaarathamyappeduthunnathil maathram adhishtithamaaya oru purathana saharan naagarikathayude saadhyathayulla sthalamaayi thamantaasett sradhikkappettittundu. thamantaasett nadiyude nilanilppum sthaanavum 2015 ll maathramaan shaasthranjar sthireekarichathu, ennirunnaalum enna thirayunna oru paryaveshanatthil 2003 ll cap timiris malayidukku kandethi, ithu eee nadeethadatthile avashishtangal niranja shudhajalathinte ozhukkaanu roopappettathu. nadhi undaayirunna kaalathe muun naagarikathayudeyo kaarshika samoohathinteyo thelivukalonnum nilavil nilavililla.

