japan khandak

japan khandak haah ishanya japanchya prashant agnivrundatil eka sagari khandak bhag aahe. teey kuril betanpasoon izu betanchya uttarekadil tokaparyant pasarlele aahe aanee tyachya sarvat kholvar aahe. teey uttarela kuril-kamchatka khandak aanee tyachya dakshinela izu-ogaswara khandkala 2 kiimii lambine jodate. hii khandak mahasagaratil prashant plate mahadvipiy okhotsk platechya (purvi uttar american platecha eka bhag asaleli eka sookshm plate) khalee budaleli mhanoon tayar kelee jaate. subduction prakriyemule khalee khalee plateche vakane hote, jyamule eka khol khandak tayar hoto. japanchya khandkashi sambandhit subduction zonvar satat halchal karane heey uttar japanmadhil tsunami aanee bhookampanchya mukhya karananpaiki eka aahe, jyat megathrust tohoku bhookamp aanee parinami 11 march 2011 roji aalelya tsunamicha samavesh aahe. japanchya khandkashi sambandhit subductioncha darr sumare/varsh nondavala gela aahe.
vivartanik itihas.
neogene kalavadhichya uttaradhat (23.03-2.58 dashalaksh varshanpurvi), japanchya khandkat paisiphik aanee okhotsk plates darmyan plate abhisaran jhaala. yaa kalat galanchya kramachya aadhare, varchya platever gaal qamee pramanat jamaa jhaala aahe tasech abhisari maryadechya payathyashi saumya dhoop jhalyache purave aahet.
cretaceous (145.5-66 dashalaksh varshanpurvi) teey suruvatichya paleogen (66-23.03 maa) darmyan, mothya samanvay reshechya vikasasah aanee ghatt gaal kramasah andesitic jwalamukhiche purave forarc forarc sambhavya vikasas soochit karatat. cretaceous darmyanchya kriyakalapanmadhye subduction ghatana tasech ishanya japanchya kamanimadhye gaal mothya pramanat vadhane samavisht hote jeey aajahi suru aahe. suruvatichya paleogen darmyan (66 emae) jwalamukhi qamee jhaala, jyamule ghatt jhalelya cretaceous-paleogen jaad gaal kram ughad jhaala. ekada haah gaal kram qamee jhaala qee jwalamukhi punha ekada suru jhaala.
bhookampachi tivrata.
japanchya khandkasah bhookampachi kriya okhotsk aanee subducting paisiphik platemadhil vighatankari abhisari platechya simanvar sambandhit subduction zonmadhye hote. yaa platechya simanvar satat halchal sumare sumare kholivar hote.
bhookampachya ghatana.
1896 saalee japanchya khandkat 6.8 tivratecha bhookamp nondavala gela. tyach varshi nantar, 8.8 tivratecha vinashkari bhookamp jhaala, jyamule done tsunamine vidhvans keela.
1938 madhye fukushima-okee pradeshat emm 7 bhukampanchi malika aalee, jyat ekoon paach nondavale gele. tyachi tivrata 7.7,7.8,7.7 aanee 7.1 hotee.
december 1994 darmyan, japanchya khandkat aantar-pattiy bhookamp udbhavalyanantar jaagtik sthitee pranali (jee. pii. ess.) jaalyane kshanik crustle halchali nondavalya. heey atishay sookshm, parantu spasht vyatyay heey darshavite qee hyamule 'silent' slow fault slip suru jhaali hotee. sanriku-okimadhye 7.7 tivratecha nondavalela bhookamp nondavala gela hota, joou purvi pahilelya santh ghasaranimule udbhavala asava.
japanchya khandkatil aantarfalak aanee kshanik bhookampa nantarchya slip detavarun itar anek bhukampanchi nond karnyat aalee aahe. tarkhanmadhye august 2005, meey 2008, julai 2008 aanee march 2010 yancha samavesh aahe, jyachi tivrata anukrame 7.2,7,6.9 aanee 6.7 aahe. eka vaishishtyapurn bhookamp (~ emm 7) veloveli sumare 37 varshanchya aavarti antarane jhaala. ujavikadil tablemadhye 1938,1989,1992,2005,2008,2008 aanee 2011 yaa varshant aalele emm 7 bhookamp disu shakatat.
japanchya khandakachya payathyashi thevalele mahasagarachya talashi asalele bhookampamapak, utsarjit jhalelya bhookampiy laharinchi nond karoon nirman jhalelya konatyahi halchalisathi jaminiche mojmap karatat. 2012 madhye, tokiyomadhye tainat asalelya rashtriy pruthvi vidnyan aanee aapatti lavchikta sanshodhan sansthene (aine. aay. dii.) khandkajaval bhookampachya aanee tsunamichya nirikshan jaalyache bandhkam suru kele. tyanni sumare 154 sthanke vegale thevanyachi yojana aakhali, pratyek sthanakat bhookampatil badalanche nirikshan karnyasathi pravegak aanee tsunamichya nirikshanasathi panyachya dabache mapan aahe.
2011 tohoku bhookamp.
11 march 2011 roji, japanchya khandkajaval japanchya khalee budalelya paisiphik platechya subduction interfaces simevar 9 tivratecha bhookamp jhaala. sumare lamb aanee rund kshetra vyapalelya khandakachya madhya bhagat eka phoot yethe jhaali. haah japanmadhye nondavalela aataparyantcha sarvat shaktishali bhookamp manla jaato tasech 1900 madhye aadhunik nondi thevanyachya suruvatipasun nondavalelya chaar sarvat shaktishali bhookampanpaiki eka manla jaato. yaa mahabhayankar bhookampamule tsunamichya prachand laata nirman jhalya jyamule akheris uttar japanchya kinarpatticha naash jhaala. fukushima daeechi anuurja prakalp sankulatil teen anuurja prakalpanchya vinashkari patali 7 chya anuurja vitalanyasah sumare 16,000 lock mrutyumukhi padale. jagachya bankene ekoon nuksan sumare 235 abj americi dollars asalyache nondavale aahe, jyamule tee itihasatil sarvat mahagadi naisargik aapatti tharali aahe.
prushthbhag khadbadit hone.
uttar japanchya khandkat mothya pramanat aanee varanvar pradeshat bhookamp kriyakalapanche spashtikaran, subducting paisiphik platechya prushthbhagachya khadbaditpanamadhil badalandware kele jaau shakate. mahasagaratil sapat prushthbhagachya saumya subduction pradesh heey plate interfaces zonchya khol bhagat samanyatah mothya under-thrust bhookampanshi sambandhit aahet. uttar japanchya khandakachya uthal bhookampagrast kshetratun konatehi bhookamp jhalele kinwa nondavale gelele naheet. khadbadit mahasagarachya talachya subduction pradesh bahya-vadhichya pradeshatil mothya samanya faulting bhookampanshi sambandhit aahet, tasech plate interfacechya uthal pradeshat pradeshat mothya tsunami bhookampanshi (megathrust ghatana) sambandhit aahet.
sagari khodkam.
1980 madhye, khol samudratil khodkam prakalpachya trikonachya sahaa vibhaganmadhye japanchya khandakachya jaminichya aanee durchya donhi bajunna asalelya gaal kordware lipidache namune ghetale gele. gass chromatography aanee sanganakikrut-gass chromatography-maas spectrometric deta vaparoon tyanche vishleshan kele gele. aliphatic aanee sugandhit hydrocarbons, keatones, alcohole, acid aanee itar bahu-karyatmak ghatak yasarkhe anek ghatak asalele namune olakhale gele. heey ghatak japanchya khandakachya galamadhye sthaliy, sagari (jivanurahit) aanee jivanuyukt aadanansathiche nirdeshak manale jaatat.
japanchya sagari-pruthvi vidnyan aanee tantradnyan sansthechya (jamsteck) dekharekhikhali aanee adhikarakhali japan khandak jalad khodkam prakalpachi 343 hii moheem aayojit karnyat aalee hotee. 1 april teey 24 meey 2012 aanee 5 teey 18 julai 2012 yaa done kalavadhit khodkam jhaale. tohoku bhookampadarmyan ghadaleli phaar mothee truti aanee japanchya ishanya ishanya kinanyavar tsunamichya latanchya nirmitiche mukhya kaaran mhanoon tyachi kshamata adhik changlya prakare samajoon ghene heey tyanche mukhya uddisht hote.
2013 madhye, ekatmik mahasagar khodkam karyakram (aay. oo. dii. pii.) mohimene 343 neey japanchya khandkatil plate seema sadosh kshetramadhye khodkamatoon galanche namune gola kele. gola kelelya gaal kormadhye coseismic slip vegat tasech qamee slip vegat qamee gharshan disun aale. yaa abhyasanni aanee namunyanni yaa kalpanela pathimba deela aahe qee fault zonchya yaa gharshanatmak gunadharmanni kadachit tohoku bhookampadarmyan uthal aanee mothya ghasaranila chalana dilee.
gaal.
turbidite palaeosismology.
japanchya khandkatil galanchya namunyanmadhye pramukhyane atyant sthanik chikanmatiyukt samagri asate. subducting paisiphik plate japanchya khandakachya mahasagarachya prushthbhagavar khore tayar karate, jyamule bareek danyanche turbidites aanee pratichhedanyukt gaal sathyanche turbadity pravahandvare sathavan hote. heey turbidites gaal gurutvakarshanachya pravahadvare gaal sathavanit jhalela badal soochit karoon mageel mothya bhukampanchi bhoogarbhiy nond mhanoon gaal sathavan jatan karatat. japanchya khandkajaval khandkat uchch galpat darr asalelya khol samudratil chhotya chhotya turbidite paleocismologychya abhyasasathi anukool paryavaraniy paristhiti nirman hote.
sukshmajiv kriyakalap.
1 janewari 1999 roji japanchya khandkatil shodhadarmyan, daab-tikavoon daab-tikavoon gaal namunakarkachya vaparatoon khol samudratil galancha namuna ghenyat aala. mohimetil namunyanvarun asey disun aale qee sukshmajivanchya vividhatene jivanunchya kshetrat vividh prakaranche vistrut vitaran darshavile. nucleotides nishchit karnyasathi aanee jivanu phylogenetically olakhanyasathi polymerase cheen reaction (pii. see. aar.) chya vaparadvare 16s ribosomal aar. aine. aii. januke vadhavali gelee. tyach sanskratinpasun kadhalelya medyukt aamlanchya pudhil vishleshanane, pahilya gelelya jatijanya parinamanna aanakhi samarthan dile. yaa galanmadhil vividh jivanu kshetrancha shodh japanchya khandkat khandkat sukshmajivanchya vividhateche soochak mhanoon vaparla jaau shakato.

