Video: Dab tsi ua rau qee qhov volcanic eruptions ua rau tawg?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Kev tawg tawg tshwm sim qhov twg txias dua, viscous magmas (xws li andesite) ncav cuag qhov chaw. Dissolved gases tsis tuaj yeem khiav tau yooj yim, yog li ntawd siab tuaj yeem tsim kom txog thaum muaj roj tawg tawg pob zeb thiab lava tawg rau saum huab cua! Lava ntws yog ntau tuab thiab nplaum yog li ntawd tsis ntws downhill li yooj yim.
Hais txog qhov 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.
Ib sab saum toj no, dab tsi ua rau volcanic eruption explosive los yog nonexplosive? 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, vim li cas qee qhov volcanic eruptions 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.
Qhov twg tawg volcanic eruptions tshwm sim?
Kev tawg volcanism . Ib feem ntawm Hall of Planet Earth. Feem ntau tawg tawg tshwm sim hauv roob hluav taws saum toj no subduction zones, qhov twg ib lub phaj tectonic dhia hauv qab rau lwm qhov. Yim caum mus rau 120 mais hauv qab ntawm qhov chaw, magma cov ntaub ntawv thaum cov pob zeb ntawm lub mantle melts saum lub phaj subducting.
Pom zoo:
Vim li cas peb ntsuas qee qhov kev ncua deb hauv astronomy hauv lub teeb xyoo thiab qee qhov hauv astronomical units?
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