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Video: Dab tsi txaus ntshai cuam tshuam nrog volcanic eruptions?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2024-01-18 08:15
Daim ntawv teev cov xwm txheej Volcanic
- Pyroclastic Density Currents (pyroclastic flows thiab surges)
- Lahars.
- Structural Collapse: Debris flow-Avalanches.
- Dome Collapse thiab tsim ntawm pyroclastic ntws thiab surges.
- Lava ntws.
- Tephra poob thiab ballistic projectiles.
- Volcanic gas.
- Tsunamis.
Cia li xav txog qhov no, dab tsi yog qhov txaus ntshai tshaj plaws ntawm volcanic eruption?
Krakatoa nyob rau hauv Pacific (1883) thiab Mount St. Helens hauv Washington xeev (1980) yog cov piv txwv ntawm cov khoom tawg tawg . Cov txaus ntshai tshaj plaws nta ntawm cov xwm txheej no roob hluav taws tshauv ntws - nrawm, hauv av-npau avalanches ntawm searing cov pa kub, tshauv thiab pob zeb uas rhuav tshem txhua yam hauv lawv txoj kev.
Kuj Paub, dab tsi ua rau lub roob hluav taws tawg tawg lossis tsis tawg? Volcanic eruptions tuaj yeem yog tawg , xa cov hmoov tshauv, roj thiab magma siab mus rau hauv cov huab cua, lossis magma tuaj yeem tsim cov lava ntws, uas peb hu ua effusive tawg . Seb ib tawg yog tawg los yog effusive feem ntau nyob ntawm tus nqi ntawm cov pa hauv magma.
Ntawm no, dab tsi ua rau tawg volcanic eruption?
Hauv volcanology, ib tawg tawg yog a volcanic eruption ntawm hom phem tshaj plaws. Xws li tawg tshwm sim thaum cov pa txaus tau yaj nyob rau hauv siab nyob rau hauv ib tug viscous magma xws li uas tshem tawm lava hnyav froths rau hauv roob hluav taws tshauv thaum siab dheev txo qis ntawm lub qhov cua.
Vim li cas qee qhov hluav taws kub tawg tawg ntau dua li lwm tus?
Lub magma tsis yog kua-y, yog li nws muaj peev xwm ntxiab gases nyob rau hauv qhov tob, cia lub siab nyob rau hauv lub roob hluav taws tsim. Thaum cov no volcanoes tawg , lawv tawg nrog ib tug bang. Cov ntau tawg volcanoes yog hom zoo li cov fwj dej qab zib uas muaj roj ntau ntau.
Pom zoo:
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Cov lava nrawm nrawm tuaj yeem tua tib neeg thiab cov tshauv poob tuaj yeem ua rau lawv ua tsis taus pa. Lawv kuj tuaj yeem tuag los ntawm kev tshaib kev nqhis, hluav taws kub thiab av qeeg uas tuaj yeem cuam tshuam nrog cov roob hluav taws. Tib neeg tuaj yeem plam lawv cov khoom raws li lub roob hluav taws tuaj yeem rhuav tshem tsev, txoj kev thiab teb. Lava tuaj yeem tua cov nroj tsuag thiab tsiaj txhu