Volcanic eruption: ua rau thiab qhov tshwm sim

Volcanic eruption: ua rau thiab qhov tshwm sim
Volcanic eruption: ua rau thiab qhov tshwm sim

Video: Volcanic eruption: ua rau thiab qhov tshwm sim

Video: Volcanic eruption: ua rau thiab qhov tshwm sim
Video: Khuv xim txog hnub tuag kiag 1/30/2019 2024, Hlis ntuj nqeg
Anonim

Lub roob hluav taws yog qhov ua txhaum ntawm lub ntiaj teb lub pob zeb, dhau los ntawm cov magma tom qab tshwm sim, tig mus rau lava thiab nrog cov foob pob hluav taws. Lawv pom nyob rau hauv tag nrho cov continents, tab sis nyob rau hauv lub ntiaj teb no muaj cov chaw ntawm lawv tshwj xeeb tsub zuj zuj. Cov tom kawg yog vim muaj ntau yam txheej txheem geologically nquag. Txhua lub roob hluav taws, nyob ntawm lawv qhov chaw thiab kev ua ub no, tau muab faib ua ob peb pawg tseem ceeb: terrestrial, subglacial thiab underwater, ploj mus, dormant thiab nquag.

volcanic eruption
volcanic eruption

Cov kev tshawb fawb uas kawm lawv hu ua volcanology. Nws yog kev qhuab qhia raug lees paub thoob plaws ntiaj teb.

Volcanic eruptions zoo li tshwm sim nrog qee yam tsis tu ncua. Nyob rau tib lub sij hawm, ib tug loj npaum li cas ntawm volcanic gases thiab tshauv raug tso tawm rau hauv cov huab cua. Ntau pua xyoo dhau los, tib neeg ntseeg tias cov txheej txheem no tshwm sim los ntawm kev npau taws ntawm cov vajtswv. Tam sim no, noob neej paub tias eruption yog ntuj, thiab cov ua rau volcanic eruptions nyob rau hauv lub tob txheej.av qhov twg cov kua kub magma accumulates. Hauv qee qhov chaw, nws maj mam pib nce raws cov vents ntawm volcanoes mus rau saum npoo. Ordinary magma tau yooj yim dhau los ntawm ntau cov pa vapors, thiab yog li cov lava tawm los kuj nyob twj ywm. Txhua yam zoo li nws nchuav tawm.

ua rau volcanic eruptions
ua rau volcanic eruptions

Acidic magma, uas yog denser nyob rau hauv cov qauv, khaws cov pa roj vapor ntev ntev, ua rau muaj kev kub ntxhov thiab volcanic eruptions nyob rau hauv daim ntawv ntawm ib tug loj bang. Qhov tshwm sim no tuaj yeem tshwm sim los ntawm kev txav ntawm daim phiaj tectonic thiab av qeeg.

Kev tawg ntawm cov roob hluav taws hauv av ua rau tsim cov pyroclastic ntws, sib txawv ntawm lawv lub zog. Lawv yog ua los ntawm cov pa kub thiab tshauv thiab maj nrawm rau ntawm qhov chaw siab tshaj ntawm qhov ceev ceev. Tsis tas li ntawd, cov tshuaj lom raug tso tawm rau hauv qhov chaw thiab cov lava kub ntws mus rau saum npoo. Cov txiaj ntsig ntawm cov hluav taws xob hluav taws xob hauv qab dej tau cuam tshuam ncaj qha rau kev tsim cov nthwv dej tuag taus thiab tsunami. Kev ua txhaum ntawm subglacial, raws li qhov tshwm sim ntawm lawv qhov kev tawg loj heev, nyob ntawm ib qho chaw geological thiab thaj chaw, tuaj yeem ua rau kev tsim av, muaj zog av nkos thiab kev tawg ntawm cov glaciers lawv tus kheej. Volcanic eruptions feem ntau yog txuam nrog kev poob ntawm lub ntiaj teb npog, huab cua muaj kuab paug, pa paug ntawm reservoir, pas dej, dej ntws, thiab li no haus dej.

qhov tshwm sim ntawm volcanic eruptions
qhov tshwm sim ntawm volcanic eruptions

Sib nrugNco ntsoov qhov ua tsis tiav hauv kev ua haujlwm ntawm ntau yam kev tsim vaj tsev, kev puas tsuaj ntawm cov tsev nyob thiab cov chav tsis nyob hauv tsev, kev tshaib kev nqhis thiab kev sib kis ntawm ntau yam kab mob.

Qhov cuam tshuam ntawm cov hluav taws kub hluav taws xob muaj zog muaj kev cuam tshuam ncaj qha rau kev hloov pauv huab cua thiab tuaj yeem ua rau qhov pib ntawm lub caij ntuj no volcanic. Cov hmoov tshauv thiab roj uas tsim thaum lub sij hawm tawg yuav ncav cuag cov txheej txheem atmospheric thiab, zoo li daim ntaub thaiv, yuav npog tag nrho lub ntiaj teb. Cov rays ntawm lub hnub yuav tsum tso tseg, thiab sulfuric acid yuav poob rau ntawm qhov chaw nyob rau hauv daim ntawv ntawm nag lossis daus. Cov txiaj ntsig uas yuav tshwm sim los ntawm cov txheej txheem zoo li no yuav zoo ib yam li qhov tshwm sim ntawm lub caij ntuj no nuclear. Kev tawg ntawm hom no yog qhov tsawg heev, thiab niaj hnub no cov kws tshawb fawb tau ua txhua yam kom txo tau qhov tshwm sim ntawm lawv.

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