Shield volcanoes yog tsim los ntawm yuav luag tag nrho cov lava uas nyias nyias ua los ntawm lub hauv paus qhov cua. Feem ntau cov ntaub thaiv npog tau tsim los ntawm qis viscosity bas alticmagma uas ntws yooj yim nqes nqes deb ntawm qhov ua siab tshaj qhov cua.
Pob thaiv hluav taws xob muaj qhov siab lossis qis qis?
Shield volcanoes yog tsim los ntawm lava ntws ntawm qis viscosity - lava uas ntws yooj yim. Yog li ntawd, lub roob roob hluav taws uas muaj qhov dav dav yog tsim los ntawm lub sijhawm los ntawm kev ntws tom qab ntws ntawm cov kua dej bas altic lava tawm los ntawm cov vents lossis fissures ntawm lub roob hluav taws.
Puas thaiv hluav taws xob muaj cov lava siab viscosity?
Ib daim thaiv hluav taws xob yog hom hluav taws xob muaj npe rau nws qhov profile qis, zoo li tus tub rog daim thaiv npog pw hauv av. Nws yog tsim los ntawm eruption ntawm cov kua heev (tsawg viscosity) lava, uas mus deb dua thiab cov ntaub ntawv nyias ntws dua li cov kua nplaum ntau dua los ntawm lub stratovolcano.
Lub roob hluav taws twg muaj viscosity siab?
Classic piv txwv ntawm shield volcanoes yog Mauna Kea thiab Mauna Loa hauv Hawaii, nrog rau Olympus Mons ntawm Mars. Thaum lava muaj viscosity siab, nws yog tuab heev thiab tsis ntws zoo heev. Es tsis txhob dej ntws ntawm lava, koj tuaj yeem tau txais cov pob zeb uas ntws los saum toj.
Puas yog daim thaiv hluav taws xob tsawg dua?
Shield volcanoes yog tsim los ntawm ntau cov khaubncaws sab nraud povtseg thiab cov khaubncaws sab nraud povtseg feem ntau zoo sib xws. The low viscosity kuj txhais tau tias cov ntaub thaiv npog tsis tawg. Kev tawg zoo li me me piv rau lwm lub roob hluav taws, tab sis lava ntws tuaj yeem rhuav tshem cov khoom thiab cov nroj tsuag.
