Yanayin bakin teku

Morphodynamics na bakin teku yana nufin nazarin hulɗa da daidaita Yanayin ƙasa da hanyoyin ruwa, yanayin ƙasa, da jerin canje-canje da suka shafi motsi na laka. Hanyoyin hydrodynamic sun haɗa da na raƙuman ruwa, raƙuman raƙuman ƙasa da iska. Canjin yanayi na Anthropogenic yana haifar da canje-canje a cikin canje-canje na bakin teku da matakai waɗanda ke da alaƙa da waɗanda ke haifar da matakai na halitta.

Duk da yake matakai na hydrodynamic suna amsawa nan take ga canjin morphological, canjin morphiological yana buƙatar sake rarraba sediment. Kamar yadda laka yana ɗaukar lokaci mai iyaka don motsawa, akwai jinkiri a cikin amsawar morphological ga tilasta hydrodynamic. Saboda haka ana iya la'akari da sediment a matsayin hanyar haɗuwa mai dogara da lokaci. Tun da yanayin iyaka na tilasta hydrodynamic yana canzawa akai-akai, wannan na iya nufin cewa rairayin bakin teku ba ya samun daidaito. Hanyoyin Morphodynamic suna nuna kyakkyawan ra'ayi da mara kyau (kamar yadda rairayin bakin teku za su iya, a kan lokuta daban-daban, a dauke su duka tsarin tilasta kai da tsarin shirya kai), abubuwan da ba na layi ba da halayyar ƙofar.

Wannan tsarin tsarin zuwa gabar teku shine Wright da Thom suka fara kirkirar shi a cikin 1977 kuma Wright da Short sun kammala shi a cikin 1984. Dangane da halayensu masu ƙarfi da halayyar halitta, ana iya rarraba rairayin bakin teku masu yashi zuwa nau'ikan morphodynamic da yawa (Wright da Short, 1984; Short, 1996). Akwai babban sikelin jihohin morphodynamic, wannan sikelin ya fito ne daga "yanayin rarraba" zuwa "mafi girman tunani". 

Yankin rairayin bakin teku suna da santsi, suna da yashi mai kyau, suna haɗawa da raƙuman ruwa waɗanda ke da nisa daga yankin intertidal kuma suna watsar da karfi a hankali tare da yankuna masu faɗakarwa. Yankin rairayin bakin teku masu rarrabawa suna da faɗi kuma suna da faɗi a cikin bayanin martaba, tare da yanki mai zurfi da raƙuman ruwa, wanda ya ƙunshi mafi kyawun laka, kuma ana nuna shi ta hanyar zubar da ruwa.

Yankin rairayin bakin teku masu haske suna da tsawo, kuma an san su da yashi mai laushi; ba su da yankin hawan igiyar ruwa, kuma raƙuman ruwa sun fashe da sauri a yankin intertidal. Yankunan rairayin bakin teku masu nunawa yawanci suna da zurfi a cikin bayanin martaba tare da karamin yanki da ke kan ruwa, wanda ya ƙunshi turɓaya mai laushi, kuma ana nuna shi ta hanyar fashewa. Ruwan da ya fi tsayi yana ba da damar percolation a lokacin ɓangaren swash na sake zagayowar, don haka rage ƙarfin backwash kuma yana ba da izinin adana kayan a cikin yankin swash

Dangane da yanayin rairayin bakin teku, raƙuman ruwa na kusa suna nuna bambance-bambance a cikin rinjaye na motsi saboda: raƙuman raƙuman da suka faru, oscillations na subharmonic, oscillaciones na infragravity, da kuma ma'anar longshore da rip currents. A kan rairayin bakin teku masu nunawa, raƙuman ruwa da raƙuman raƙuman ƙasa sun fi rinjaye. A cikin yankunan raƙuman ruwa masu yawa, lalacewar raƙuman raƙuman da suka faru a bakin teku yana tare da ci gaban ƙarancin ƙarfi; a cikin yankin raƙuman ƙasa na ciki, raƙuman lantarki da ke da alaƙa da raƙuman iska masu ƙarfi sun mamaye. A kan jihohin tsakiya tare da furcin bar-trough (daidai ko crescentic) topographies, abubuwan da suka faru na raƙuman ruwa suna da rinjaye amma kuma suna taka muhimmiyar rawa ta hanyar raƙuman raƙuman ƙasa da raƙuman ƙafa, raƙuman doguwar ruwa, da rips. Rashin ƙarfi da hanyoyin ciyarwa masu alaƙa suna faruwa ne tare da mashaya na tsakiya da kuma taswirar rip.

Sauye-sauye tsakanin jihohin rairayin bakin teku galibi suna haifar da canje-canje a cikin ƙarfin raƙuman ruwa, tare da hadari da ke haifar da bayanan raƙuman raƙuman bakin teku don shimfiɗa (motsi na bakin teku a ƙarƙashin raƙuman sama), don haka suna karɓar bayanin martaba. Hakanan ana danganta matakai na Morphodynamic tare da wasu siffofin bakin teku, alal misali, taswirar taswirar a kan coral reefs da tidal flats a cikin cikewar estuaries.

## Manazarta