Blowhole (geology)

A fannin ilmin kasa, an samar da **busa** ko **geyser na ruwa** yayin da kogon teku ke girma zuwa sama da sama zuwa surori a tsaye kuma suna nuna kansu zuwa saman, wanda zai iya haifar da matsa lamba na ruwa na ruwa wanda aka saki ta tashar jiragen ruwa daga saman busa.   Geometry na kogon da busa tare da matakan ruwa da yanayin kumbura sun tabbatar da tsayin feshin .  

## Makanikai
Ana iya samun bututun bututun ruwa a wuraren da akwai ramuka, irin su bututun lava, a cikin dutsen da ke bakin teku.  Waɗannan wuraren galibi ana samun su tare da layukan kuskure da kuma a tsibiran.  Yayin da raƙuman ruwa masu ƙarfi suka afkawa gaɓar teku, ruwa ya shiga cikin waɗannan raƙuman ruwa kuma ya fashe a cikin matsanancin matsa lamba.  Sau da yawa yana tare da ƙara mai ƙarfi da feshi mai faɗi, kuma saboda wannan dalili, ramukan busa sau da yawa wuraren yawon shakatawa ne. 

Yazawar ruwa a kan rairayin bakin teku masu dutse suna haifar da busassun busassun da ake samu a duk faɗin duniya. Ana samun su a cikin kurakuran da ke haɗuwa da kuma a gefen iska na bakin teku inda suke samun makamashi mai ƙarfi daga buɗaɗɗen teku.  Ci gaban busa yana da alaƙa da samuwar kogon littoral. Wadannan abubuwa guda biyu sun hada da tsarin busa. Tsarin busawa koyaushe yana ƙunshe da manyan abubuwa guda uku: ƙofar shiga ruwa, kogon matsawa da tashar kora. Tsari, kusurwa da girman waɗannan siffofi guda uku sun ƙayyade ƙarfin iska zuwa rabon ruwa wanda ke fitarwa daga tashar jiragen ruwa.  Siffar busa busa tana ƙoƙarin faruwa a cikin mafi nisa na kogon dutse . Kamar yadda sunansu ya nuna, busassun busassun suna da ikon motsa iska cikin sauri. Ƙarfin juzu'i mai ƙarfi don mayar da martani ga canje-canjen matsa lamba a cikin kogon dutse mai haɗawa zai iya aika saurin iska sama da 70&nbsp;km/h. 

Samuwar tsarin busawa yana farawa ne yayin da aka kafa kogon littoral. Babban abubuwan da ke ba da gudummawa ga samuwar kogwanni su ne motsin igiyar ruwa da dukiyar dutsen kayan iyaye . Kayayyakin kayan iyaye irin su masu rauni ko juriya ga yanayi suna taka muhimmiyar rawa wajen haɓaka kogo. Ana iya samar da kogon littoral ta hanyar daya daga cikin matakai guda biyu: kogon da aka yi da dutsen farar ƙasa ana samar da su ta hanyar tsarin karst (rushewa), kuma kogon da aka yi da dutsen wuta ana samar da su ta hanyar pseudokarst (marasa rushewa).  A cikin lokaci kogon littoral yana haɓaka girma a cikin ƙasa da kuma a tsaye ta hanyar raunin haɗin gwiwa a cikin kayan iyaye. Yayin da yanayi ke ci gaba da bayyana rufin kogon, kuma ramin da ke ci gaba da kara girma, daga karshe rufin kogon ya yi rauni ya ruguje. Wannan yana haifar da mashigin bango mai tsayi wanda ke ba da damar mataki na gaba na ilimin halittar bakin teku don ci gaba. 

La Bufadora babban misali ne na bututun bututun da ke cikin Punta Banda Peninsula na Baja California, Mexico. Ya ƙunshi wani kogon littoral tare da buɗe bakin bakin ciki wanda ke da tazarar fashewar tazarar daƙiƙa 13 -17, yana fitar da ruwa har zuwa ƙafa 100 sama da matakin teku. 

## Hotuna

Fayil:Alofa'aga_Blowholes_-_Savai'i.jpg|alt=Alofaaga Blowholes on Savai'i Island in Samoa| Alofaaga Blowholes a tsibirin Savai'i a Samoa
Fayil:Blowhole,_Barbados_coast.jpg|alt=Blowholes, north coast of Barbados| Blowholes, arewa maso gabashin Barbados
Fayil:Kudawella-blowhole-sri-lanka.JPG|alt=Hummanaya - A blowhole located in Southern Province, Sri Lanka| Hummanaya - Wani rami da ke cikin Lardin Kudu, Sri Lanka
Fayil:Halona_Blowhole_a0002860.jpg| Hālona Blowhole, Oahu, Hawaii
Fayil:KiamaBlow.JPG|alt=Kiama Blowhole, New South Wales, Australia| Kiama Blowhole, New South Wales, Ostiraliya
Fayil:BufadoraRafaga.jpg| La Bufadora, Ensenada, Baja California


## Manazarta