Video: Dab tsi ua rau moraine?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Moraines feem ntau tsim vim yog plowing nyhuv ntawm ib tug txav glacier, uas ua rau Nws tuaj yeem khaws cov pob zeb tawg thiab cov pob zeb thaum nws txav mus, thiab vim yog cov dej khov ua ntu zus, uas ua rau lub glacier tso cov ntaub ntawv no thaum lub sij hawm sov so.
Hais txog qhov no, dab tsi ua rau moraine tsim?
A moraine yog cov khoom uas tshuav tom qab los ntawm cov dej khov uas txav mus. Cov khoom no feem ntau yog av thiab pob zeb. Ib yam li cov dej ntws hla txhua hom khib nyiab thiab cov av uas thaum kawg tsim mus daim ntawv deltas, glaciers thauj txhua hom av thiab pob zeb uas ua rau tsim moraines.
Ib tug kuj yuav nug, dab tsi yog hom moraines? Ntau hom moraine
- Terminal moraines pom nyob rau ntawm lub davhlau ya nyob twg los yog qhov chaw deb tshaj plaws (kawg) mus txog ntawm lub qhov dej khov.
- Lateral moraines pom nyob rau ntawm ob sab ntawm lub glacier.
- Medial moraines pom nyob rau ntawm qhov sib tshuam ntawm ob lub glaciers.
Ntawm no, puas yog moraine erosion lossis deposition?
Cov pob zeb no nrog cov pob zeb sib txawv lossis keeb kwm los ntawm cov pob zeb nyob ib puag ncig yog glacial erratics. Melting glaciers tso tag nrho cov khoom loj thiab me me ntawm cov khoom siv pob zeb uas lawv nqa hauv ib pawg. Lateral moraines daim ntawv ntawm cov npoo ntawm lub glacier raws li cov khoom poob mus rau lub glacier los ntawm kev yaig ntawm phab ntsa hav.
Moraines siv rau dab tsi?
Moraines yog cov ridges los yog mounds ntawm cov khib nyiab uas tau muab tso ncaj qha los ntawm lub glacier los yog thawb los ntawm nws1. Lub sij hawm moraine yog siv los piav txog ntau hom av tsim los ntawm kev pov tseg, thawb, thiab nyem cov khoom siv pob zeb xoob, nrog rau cov dej khov yaj yaj.
Pom zoo:
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Thaum ib qho kev quab yuam sab nraud yog exerted rau ntawm cov kua uas muaj, qhov tshwm sim siab yog kis sib npaug thoob plaws hauv cov kua. Yog li txhawm rau kom dej ntws, dej xav tau qhov sib txawv siab. Cov kav dej kuj tuaj yeem cuam tshuam los ntawm cov kua dej, cov yeeb nkab loj, qhov kub thiab txias (cov kav dej khov), cov kua dej ntom ntom