Qhov twg yog qhov dej hiav txwv trench feem ntau yuav tsim?
Qhov twg yog qhov dej hiav txwv trench feem ntau yuav tsim?

Video: Qhov twg yog qhov dej hiav txwv trench feem ntau yuav tsim?

Video: Qhov twg yog qhov dej hiav txwv trench feem ntau yuav tsim?
Video: Dej Hiav Txwv Quas - Pob Tsuas Xyooj 2024, Kaum ib hlis
Anonim

Cov Mariana Trench , hauv South Pacific Dej hiav txwv , yog tsim raws li lub hwj chim Pacific phaj subducts hauv qab lub me, tsawg-dense Philippine phaj. Nyob rau hauv ib cheeb tsam subduction, ib co ntawm cov khoom molten - yav tas los seafloor - tuaj yeem nce los ntawm volcanoes nyob ze ntawm trench.

Ua li no nyob rau hauv saib, uas yuav tsum tau rau ib tug dej hiav txwv trench tsim?

Trenchs yog tsim los ntawm subduction, txheej txheem geophysical nyob rau hauv uas ob los yog ntau tshaj ntawm lub ntiaj teb lub tectonic daim hlau converge thiab cov laus, denser phaj yog thawb hauv qab lub sib dua phaj thiab tob rau hauv lub mantle, ua rau lub seafloor thiab sab nrauv crust (lub lithosphere) khoov thiab daim ntawv kev nyuaj siab, V-zoo li tus.

Ib tug kuj nug, qhov twg yog qhov tshiab dej hiav txwv pem teb tsim? Seafloor kis tau tus txheej txheem uas tshwm sim nyob rau hauv nruab nrab ntawm lub hiav txwv ridges, qhov twg tshiab dej hiav txwv crust yog tsim los ntawm volcanic kev ua ub no thiab maj mam txav deb ntawm lub hiav txwv crust. qaum.

Ib yam li ntawd, qhov twg koj yuav cia siab tias yuav pom cov dej hiav txwv tob?

Sib sib zog nqus - hiav txwv trench feem ntau pw seaward ntawm thiab sib npaug mus rau cov kob uas nyob ib sab arcs lossis roob toj siab ntawm cov ntug dej hiav txwv. Lawv sib raug zoo nrog thiab pom nyob rau hauv subduction aav-uas yog, qhov chaw nyob qhov twg lub lithospheric phaj bearing dej hiav txwv crust swb mus rau sab sauv mantle nyob rau hauv lub zog ntawm lub ntiajteb txawj nqus.

Cov piv txwv ntawm dej hiav txwv trench yog dab tsi?

Dej hiav txwv trench muaj nyob rau hauv tag nrho lub ntiaj teb no dej hiav txwv . Lawv suav nrog Philippines Trench , Tonga Trench , Sab Qab Teb Sandwich Trench , Eurasian Basin thiab Malloy Deep, Diamantina Trench , Puerto Rican Trench , thiab Mariana.

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