Valley - dab tsi yog qhov no? Lub ntsiab lus "hav"

Ib feem ntawm cov mountainous roob hav yog hav. Qhov no yog ib tug tshwj xeeb daim ntawv ntawm nyem, uas yog ib tug elongated kab noj hniav. Nws nquag los ntawm erosive tej yam uas cov dej ntws, raws li zoo raws li vim muaj ib co peculiarities ntawm lub geological qauv ntawm cov kaub puab.

Lo lus "hav"

Tag nrho cov hom ntawm cov kab teeb, ravines, gullies tshwm sim los ntawm erratic dej ntws yog rudimentary ntaub ntawv nram hav. Raws li ib tug tshwm sim, av kais dej dej raws tus ntug dej hiav txwv ntawm lowland tshwm sim, uas yog interconnected, tej zaum yuav tsim ib tug lej system.

Koom Haum Niam lawv tsis ruaj tsis khov thiab yuav txawv nyob ntawm seb cov kev taw qhia ntawm tus dej ntws. Roob los yog hav dej - yog ib feem ntawm ib tug complex branched system ua hauj lwm. Nws muaj ob peb ntsiab:

1. Slopes - ib tug saum npoo qhov chaw uas txwv lub hav sab. Lawv sib txawv nyob rau hauv qhov siab thiab, nyob rau hauv tas li ntawd, tej zaum yuav muaj cov qub los yog ib tug txawv nqes hav (qhov chaw uas ib strand ca, thiab lwm - ib tug steeper).
2. Lub hauv qab ntawm lub (box) - lub tiaj thiab tsawg-dag ib feem ntawm lub hav.
3. Outsole - ib qho chaw qhov twg nws koom lub hauv qab thiab qhov chaw siab tshaj.
4. Pob Khawm - kab kev sib cuag nrog tus nto ntawm cov slopes ntawm cov cheeb tsam surrounding.
5. Terrace. Qhov no me me Kws Dlhos kab rov tav qhov chaw nyob rau ntawm txawv heights ntawm lub qab ntawm lub hav.

ntau ntau yam nram hav

Geologists faib tag nrho cov nram hav nyob rau hauv lub roob thiab dawb. Lawv tsim, ntsig txog, lub npe ntawm ib tug tej thaj chaw. Roob hav - ib tug hauv daim ntawv ntawm nyem, yus muaj los ntawm ib tug txiav txim tob thiab sis tsis ncaj ntxhab qhov chaw siab tshaj.

Lub tiaj tus yog wider nrog tsawg pronounced lub qhov tob thiab nrog maj tus nqes hav, muaj nuj nqis tsis tau zoo dav. Lub ntsiab caij yog ib tug dav hauv qab incision. Lub qhov ncauj ntawm tus hav yog feem ntau ib tug Bay qhov twg tus dej ntws.

Nyob rau qhov chaw ntawm lub hav, thiab txhais lub ntsiab lus ntawm lo lus no nyob rau hauv qhov chaw sib txawv. Nyob rau hauv ib co "Valley" - yog ib tug elongated kev nyuaj siab ntawm toj los yog roob, thiab nyob rau hauv lwm yam - qhov chaw hauv qab no lub surrounding struts, feem ntau yog nyob raws tus dej.

hav dej

Tsim raws li ib tug tshwm sim ntawm kis tau tus ntws dej. River Valley nruab nrab yog lowland elongated saum npoo av uas extends ntawm qhov chaw mus rau lub qhov ncauj. Nyob rau hauv nws tsos tej geographers tau yooj yim txiav txim seb lub hnub nyoog thiab theem ntawm kev loj hlob raws li zoo raws li lub geological qauv ntawm lub cheeb tsam, crustal taw nyob rau hauv tus dej phiab, kawm txog cov rog ntawm weathering thiab ntau npaum li cas.

Hav dej - ib tug branched raug rho tawm system, uas contrasts sharply nrog cov surrounding toj roob hauv pes. Hloov cov kev taw qhia ntawm tus dej ntws feem ntau ua rau volatility thiab cov restructuring ntawm tus kwj ha, uas yog tsis tseg rejuvenated. Lawv hydrological nta yog txawv ntawm lwm yam hauj lwm. Qhov no siv rau raws caij nyoog dej nyab thiab los nag hob dej nyab. Nchuav tshwm sim synchronously thoob plaws hauv lub profile ntawm lub hav.

Lub slopes ntawm cov hav dej yog feem ntau yog them nrog hav zoov, thiab floodplain siv rau grasslands, ua liaj ua teb cov qoob loo, nyob rau hauv tus tov qhov chaw ntawm yaig nyob rau hauv cov chaw no yog nyob thiab koom.

Nyob rau hauv loj dej floodplain yuav nyob lub teb chaws nyob rau hauv dav ntawm 15 mus rau 30 km. Nws yog tsawg tsawg, dej nyab xyoos ib zaug, thiab high school, uas mus nyob rau hauv cov dej tsuas yog thaum hnyav dej nyab.

Terrace uas muaj ib tug dej hav - yog ib yam ntawm cov nicks uas yuav qhia ntau yam txog lub keeb kwm ntawm cov hav dej. Thaum lawv lub hauv paus overlie lub bedrock, thiab cov nto coated nrog dej sediments. Nyob rau cov terraces koj yuav nrhiav tau ib tug ntau yam ntawm cov laus sediments ntawm marshes thiab cov pas dej loj, remnants muaj rau ib ntev lub sij hawm cov nroj tsuag thiab cov tsiaj.

Gorges thiab nram hav - uas yog ib lub roob toj roob hauv pes. Lawv tsiag ntawv los ntawm ntxhab qhov chaw siab tshaj thiab raws ntawm rapids. Hav dej haib kwj txiav los ntawm lub pob zeb txoj kev gorges thiab canyons yuav luag ntxhab qhov chaw siab tshaj uas tsis muaj terraces.

Profile ntawm cov tub ntxhais nram hav muaj seem nyob qhov twg cov dej yog sai rushing rapids. Nws thiaj li, nyob rau hauv qhov kev txiav txim ntawm cov khiav qhov chaw kws dlhos. Du profile, uas ua ib tug hav - nws yog ib tug kos npe rau ntawm nws kom loj hlob.

Cov ntaub ntawv ntawm cov hav dej hav

Cov tsim ntawm hav feem xyuam rau ntau yam. Ntawm lawv, cov tectonic dab uas txiav txim cov kev taw qhia ntawm lub pob zeb, slipping av yaig thiab lawv nag lossis daus. Tag nrho cov no muaj txhawb rau tsim ntawm ntau yam ntaub ntawv ntawm cov hav dej hav.

Noj tsau hwv lawm los yog gorges yog tsim los ntawm sib sib zog nqus yaig thiab faib tsuas yog nyob rau roob chaw. Lawv ntxhab qhov chaw siab tshaj li ntawm cov khoom pob zeb. Lub hauv qab ntawm lub tag nrho dav ntawm nws yuav siv sij hawm tus dej thiab.

Canyons yog nqaim nram hav uas yog tsim nyob rau hauv cov cheeb tsam nyob qhov twg lub tso khaubncaws sab nraud povtseg ntawm txawv zog. Nws yog tau hais tias yuav lub deepest hav cuam kawb nyob rau hauv lub Colorado dej (nyob rau hauv Teb Chaws Asmeskas) mus rau ib tug tob ntawm 2 km.

Cov dej nyab nras rau ntawm tus dej channel occupies xwb ib tug me me ib feem. Lawv yog cov yam ntxwv rau lub nras. Tag nrho hav nrog terraces yuav muaj ib tug dav ntawm mus txog 100 kilometers los yog ntau tshaj. Nyob rau hauv cov chaw no kom loj hlob cov qoob loo thiab nog nyom nyuj. Tsis muaj lub zem ntau encyclopedic qhov chaw, lo lus "hav" yog txhais li "fertility", "Lub neej", "nurturing".