
samudra chalanathmakatha

samudrangalude chalanathmakatha samudrangalkkullile jalathinte chalanathe nirvachikkukayum vivarikkukayum cheiyunnu. samudra thapanilayeyum chalana mandalangaleyum moonnu vyathyastha paalikalaayi verthirikkaam mishrita (uparithala) paali, mukalile samudram (thermocline mukalil), aazhathilulla samudram.
parambaraagathamaayi samudra chalanaathmakathayekkurichu anweshikkunnathu upakaranagalil ninnulla saambilukal upayogichaanu.
mishra paali uparithalathodu ettavum aduthaanu, kanam 10 muthal 500 meter vare vyathyaasappedaam. eee paaliyil thaapanila, lavanathvam, layikkunna ooksijan thudangiya gunangalundu, avaa sajeevamaaya prakshubdhathayude charithrathe prathifalippikkunna aazhathil ekeekrithamaanu (anthareekshathinu oru samana graha athirthi paaliyund). mishrita paaliyil prakshubdhatha kooduthalaanu. ennirunnaalum, ithu mishra paaliyude adithattil poojyamaayi maarunnu. shear asthirathakal kaaranam mishrita paaliyude adithattinu thaazhe veendum prakshubdhatha vardhikkunnu. uparithala thanuppinteyum shaityakaala kodunkaattinteyum falamaayi shaithyakaalathinte avasaanathil eee paali ushnamekhalaa akshamshangalil ettavum aazhameriyathum venalkkaalath valare aazhamillaathathumaanu. prakshubdhamaaya misrithavum ekmaan gathagathavum, mukalilulla anthareekshavumaayulla kaimaattam, thirascheenamaaya advection ennivayaanu athinte chalanathmakatha niyanthrikkunnath.
ushnamekhalaa, kizhakkan samudrangalil 100 meettaro athil kuravo aazhathil ninnu padinjaaran uposhnamekhalaa samudrangalil 800 meteriladhikam aazhathil vyathyaasappedunna choodulla thapanilayum sajeeva chalanavum ulla uparithala samudram. eee paali kurachu varshangalude samayaparidhiyil choodu, shudhajalam thudangiya gunangal anthareekshavumaayi kaimaattam cheiyunnu. mishra paaliyude thaazhe mukalile samudram saadhaaranayaayi hydrostatic, geostrophic bandhangalal niyanthrikkappedunnu. aazhathilulla ushnamekhalaa pradeshangalum theerapradeshangalum ithil ulppedunnu.
aazhathilulla samudram thanuthathum irundathumaanu, pothuve durbalamaaya vegathayaanu (aazhathilulla samudrathinte parimithamaaya pradeshangalkk kaaryamaaya punarchalanamundennu ariyappedunnu). parimithamaaya bhoomishaasthraparamaaya pradeshangalil maathrame aazhathilulla samudrathinu mukalile samudrathil ninnu vellam vitharanam cheyyappedunnulloo upadhruva vadakkan atlaantik, antartikku chuttumulla niravadhi mungunna pradeshangal. aazhakkadal jalathinte durbalamaaya vitharanam kaaranam aazhakkadal jalathinte sharashari vaasa samayam noorukanakkinu varshangalil alakkunnu. eee paaliyilum hydrostatic, geostrophic bandhangal saadhaaranayaayi saadhuthayullathum misritham pothuve valare durbalavumaanu.
aadima samavaakyangal.
nammude karangunna grahatthinte uparithalathil ("x", "y", "z") sthithicheyyunna oru draavaka moolakatthinte navier-stokku samavakyangalaayi prakadippicha nyoottante chalana samavaakyangalaan samudra chalanaathmakathaye niyanthrikkunnath, aaa uparithalavumayi thaarathamyappeduthumbol vegathayil (u, v, w) neengunnu
ivide "u" ennathu soonal vegathayaanu, "v" ennathu meritional vegathayaanu, "w" ennathu lamba vegathayaanu, "p" ennathu marddamaanu, "ρ" saandrathayaanu, "t" ennathu thaapanilayaan, "s" ennathu lavanathayaan, "g" ennathu guruthwaakarshanam moolamulla thvaranam, "τ" ennathu kaattinte sammarddam, "f" ennathu corialis paaraameettar ennivayaanu. "q" ennathu samudrathilekkulla taapa inputt aanu, athesamayam "p-e" ennathu samudrathilekkulla shudhajala inputt aanu.
mixed lair dynamics.
mixed lair dynamics valare sankeernamaanu; ennirunnaalum, chila pradeshangalil chila lalithavalkkaranangal saadhyamaan. mixed leyarile kaattil pravartthikkunna thirashcheena gathaagathathe ekadesham orumaan lair dynamics vivarikkunnu, athil momentatthinte lambamaya vyaapanam coriolis efakttineyum kaattinte sammarddatheyum santhulithamaakkunnu. saandrathayude thirashcheena gradiantukalumaayi bandhapetta geostrophic ozhukkilaanu eee ekmaan gathagatham superimpose cheythirikkunnathu.
upper ooshyan dynamics.
udaaharanathinu, ikman transport kanverjans kaaranam mishra paalikkullile thirascheenamaaya kanverjansukalum vyathiyaanangalum, mishra paaliyude thaazheyulla samudram draavaka kanangale lambamaayi neekkendathinte aavasyakatha chumathunnu. ennaal geostrophic bandhatthinte prathyaaghaathangalilonnu thirashcheena chalanatthinte vyaapthi lamba chalanatthinte vyaapthiye kaviyanam ennathaanu. athinaal ikman transport kanverjansumaayi bandhapetta durbalamaaya lamba vegatha (prathidinam meterukalil alakkunnu) secondil 10 centimetero athil kooduthalo vegathayulla thirashcheena chalanathinu kaaranamaakunnu. oru karangunna golatthil oru draavakathinu koneeya aavegam samrakshikkuka enna ashayam prakadippichukondu lambavum thirascheenavumaaya vegathakal thammilulla ganitha bandhathe uruthirinjedukkaam. eee bandham (rund adhika ekadesha kanakkukalode) samudrashaasthranjarkku swerdrup bandham ennaanu ariyappedunnathu. uposhnamekhalaa vadakkan atlaantik, pasaphik shakthikalil sambhavikkunna ekmaan gathaagathatthinte thirashcheena samyojanam eee rund samudrangalude ulbhaagangaliludaneelam thekkott ozhukunnu ennathaanu athinte prathyaaghaathangalil onnu. jalam uyarnna akshaamshathilekku thirike konduvarunnathinaayi padinjaaran athirthi pravaahangal (gulf aruviyum kuroshio) nilavilundu.