Lub hotspot tsim li cas?
Lub hotspot tsim li cas?

Video: Lub hotspot tsim li cas?

Video: Lub hotspot tsim li cas?
Video: What is a Hotspot? 2024, Kaum ib hlis
Anonim

Lub roob hluav taws kub "hotspot" yog ib qho chaw hauv lub mantle los ntawm qhov kub siab tshaj li lub thermal plume los ntawm qhov tob hauv lub ntiaj teb. Thaum tshav kub kub thiab qis siab ntawm lub hauv paus ntawm lithosphere (tectonic phaj) ua kom yooj yim melting ntawm lub pob zeb. Qhov no yaj, hu ua magma, nce los ntawm cov kab nrib pleb thiab erupts rau daim ntawv roob hluav taws.

Raws li txoj cai, hotspots tsim geography li cas?

Hotspots yog nyob ruaj ruaj magma plumes tob rau hauv lub ntiaj teb uas tsim volcanoes rau saum npoo (xws li Mount Kilauea hauv Hawaii). On ib hotspot , magma tuaj rau saum npoo los ntawm cov kab nrib pleb hauv cov pob zeb uas muaj cua sov thiab tsis tshua muaj siab. Hotspots tuaj yeem txuas rau phaj npoo los yog tsuas yog daim ntawv ntawm lub phaj crustal.

Dab tsi ua rau volcanic hotspots? Mantle plumes yog thaj chaw ntawm kub , upwelling mantle. A kub qhov chaw txhim kho saum lub plume. Magma generated los ntawm cov kub qhov chaw nce los ntawm cov phaj nruj ntawm lithosphere thiab ua kom muaj zog roob hluav taws ntawm lub ntiaj teb nto. Cov chaw kub yog qhov chaw nyob hauv lub mantle qhov twg pob zeb yaj los tsim magma.

Ib yam li ntawd, cov hotspots nyob qhov twg?

Cov chaw kub yog pom nyob rau hauv dej hiav txwv, thiab nyob rau continents. Feem ntau qhov chaw kub tsim ib txoj hlua hluav taws xob, raws li lub phaj txav mus los ntawm ib qho chaw nyob ruaj khov. Qhov piv txwv zoo tshaj plaws ntawm qhov chaw kub kub hluav taws xob yog Hawaiian Islands.

Dab tsi yog qhov hotspot hauv science?

Hauv geology , cov chaw hu ua hotspots los yog kub qhov chaw yog thaj tsam volcanic xav tau pub los ntawm lub hauv paus mantle uas yog kub anomalously piv nrog ib puag ncig mantle.

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