Kogin Dutse

Kogin dutse kogi ne wanda ke gudana galibi a cikin tsaunuka, a cikin kunkuntar kwari, zurfin kwari mai tudu, gadon rafi mai dutse, da tarin tarkacen dutse.

Kogunan tsaunin suna da girman gangara da saurin gudu, zurfin da ba shi da mahimmanci, yawan raƙuman ruwa da magudanan ruwa, gami da mamaye hanyoyin da aka wanke. Ana ƙididdige girman kogin dutse a 60-80 m/km a cikin rafi na sama da 5-10 m/km a ƙasa. Daidai daidai ya fi ko daidai da 0.002 m/m tare da yawancin tsawon rafinsa. Ana auna saurin rafi a 1 zuwa 4.5 m/s kuma mafi girma.

Kogunan tsaunuka suna da ƙarfin samar da makamashi na ruwa kuma a cikin yanayi mai ƙazanta galibi ana amfani da su don ban ruwa.

Suna taka muhimmiyar rawa wajen tsara yanayin da ke kewaye ta hanyar zazzagewa da jita-jita, ƙirƙirar kwaruruka masu zurfi, kwazazzabai, da magudanan ruwa.

Siffofin Kogin Dutse:

1. Tuƙaƙƙe: Kogin yana saukowa da sauri daga tudu mai tsayi, sau da yawa yakan haifar da saurin gudu da raƙuman ruwa.

2. Ruwan Sanyi da Tsaftace: Ruwa yawanci sabo ne, sanyi, kuma mai wadatar iskar oxygen, yana tallafawa rayuwar ruwa daban-daban.

3. Tashoshin Dutsi: Wadannan koguna sukan gudana ta cikin tudu mai kauri da duwatsu da tsakuwa a cikin gadajensu.

4. Powerarfin Cross: Saboda saurin su da kuma ƙarar su, sun kuskure dutse da jigiƙasa.

 Manazarta 

 National Geographic Society, Rivers and Streams.

https://www.nationalgeographic.com/environment/rivers/

 Reference: Ellen Wohl, "Mountain Rivers Revisited," American Geophysical Union, 2010.

[Available on AGU's website or academic repositories]

 Springer Link, "Hydrology of Mountain Rivers."

https://link.springer.com