Kwazazzabo
 kwazazzabo | |
|---|---|
 | |
| Bayanai | |
| Ƙaramin ɓangare na |
rock formation (en)  da canyon (en) |
.jpg)
Wani kwari wani wuri ne wanda ya fi ƙanƙanta fiye da Canyon kuma sau da yawa samfurin lalacewar ruwa ne. Ana rarraba ravines a matsayin mafi girma a sikelin fiye da gullies, kodayake karami fiye da kwari.[1] Ravines kuma ana iya kiransu cleuch, dell, ghout (Nevis), gill ko ghyll, glen, gorge, kloof (Afirka ta Kudu), da China (Isle of Wight)
Kwarin yana da nau'in gangaren kogin na ɓangarorin da ke da tsayi (cross-sectional), a kan tsari na ashirin zuwa kashi saba'in cikin dari a cikin gradient. Ravines na iya ko bazai da raƙuman ruwa masu aiki da ke gudana tare da tashar da ke ƙasa wanda ya kafa su da farko; Bugu da ƙari, sau da yawa ana nuna su da raƙuma masu saurin wucewa, tunda sikelin su na ƙasa bazai isa ya goyi bayan raƙuman raƙuman da ke ci gaba ba.
Ma'anar
[gyara sashe | gyara masomin]A cewar Merriam-Webster, kwarin "ƙaramin, kunkuntar, kwarin da ya fi girma fiye da kwarin kuma karami fiye da kwari kuma yawanci ana sawa da ruwa mai gudana".[1] Wasu al'ummomi da harsuna ba su bambanta tsakanin kwari da kwari ba; a wasu, akwai bambanci, musamman idan ya shafi kula da muhalli.[2]
Kafawa
[gyara sashe | gyara masomin]Sau da yawa ana samun gullies a yankunan tsaunuka ko tsaunuka, inda ake jagorantar ruwa zuwa ƙasa ta hanyar gangara masu tsawo kuma a tsawon lokaci yana lalata wuri. Wani kwari shine mataki na karshe a cikin rushewa kwari, wanda aka kafa lokacin da rafi ya rushe sosai ya samar da zurfin yanke a cikin ƙasa.[2] Ana iya rarraba rami a matsayin kwari bayan ya kai zurfi mai zurfi, yawanci fiye da mita 5 (16 . [3]
Tasirin muhalli
[gyara sashe | gyara masomin]
Rugujewar ruwan sama tana ba da gudummawa sosai ga asarar ƙasa a duniya kuma musamman tana barazana ga filayen noma. Bugu da ƙari, asarar ƙasa tana ba da gudummawa ga gurɓataccen yanayi, ambaliyar ruwa, da kuma lalacewar hanyoyin ruwa.[3] Za'a iya hanzarta kafa ƙasashen kwari ta hanyar sare daji da wuce gona da iri.[3] A cikin wuraren da ba su da kyau na Indiya, an kiyasta rushewar ƙasa ta wuce yawan tan 40 a kowace hekta (16 dogon ton / acre; 18 gajeren ton / acire) a kowace shekara.[3]
Misalan
[gyara sashe | gyara masomin]Hawaii
[gyara sashe | gyara masomin]Garkuwar garkuwar Hawaii tana da tasiri sosai a kan rarraba raƙuman ruwa a faɗin tsibirai, musamman Mauna Loa da Mauna Kea, wanda tsohon shine ɗayan garkuwar garkuwa a Duniya.[4] Dukkanin wadannan tsaunuka masu fitattun wuta suna nuna raƙuman V-shaped a gefen su, kawai inda Pahala ash ya rufe su. Da yake shi ne babba daga cikin biyun, Mauna Kea yana nuna bayyanar cututtukan waɗannan raƙuman. Ruwan sama da ƙarfin shiga suna da mahimmanci ga farawa na kwarin a kan tsaunukan wuta na Hawaiian. Da zarar an fara waɗannan kwari, kogunsu suna raguwa don samar da raƙuman V-shaped. A ƙarshe, sun zama tsarin kwari mai zurfi kuma suna fallasa aikin ruwa na ƙasa. Mafi zurfi daga cikin wadannan incisions sune U-shaped, wasan kwaikwayo-headed kwari.[5]
Kyakkyawan raƙuman ruwa
[gyara sashe | gyara masomin]
Manazarta
[gyara sashe | gyara masomin]- 1 2 "Ravine". Merriam-Webster. Retrieved 2 August 2024. Cite error: Invalid
<ref>tag; name "Dictionary Meaning" defined multiple times with different content - 1 2 Dagar & Singh 2018a.
- 1 2 3 4 Dagar 2018.
- ↑ "Shield Volcanoes". U.S. National Park Service (in Turanci). Retrieved 28 May 2024.
- ↑ "Valley - Hawaiian Volcanoes, Erosion, Plateaus". Britannica (in Turanci). Retrieved 28 May 2024.