Ukutadisha Amaphethini Amanje Esizini EMakassar Strait Kusetshenziswa Idatha Yokubuka Kwasolwandle
I-Pendahuluan
I-Makassar Strait ingenye yemizila yolwandle ebaluleke kakhulu e-Indonesia, kokubili ngokwe-oceanography kanye nemisebenzi yokuthutha kanye nokudoba. I-strait ixhumanisa uLwandle iSulawesi enyakatho noLwandle iFlores eningizimu, futhi isebenza "njengomzila oyinhloko" we-Indonesian Throughflow (ITF), ethwala amanzi amaningi esuka e-Pacific Ocean eya e-Indian Ocean. Ngenxa yesikhundla sayo esibalulekile kanye nesimo sayo sendawo esincane futhi eside, i-Makassar Strait ibhekana nokuguquguquka kwamandla kagesi futhi iyazwela ezinguqukweni zesizini.
Ukufunda amaphethini wamanje wesizini eMakassar Strait kubalulekile ekuqondeni ukwehluka kokuthuthwa kwamanzi amaningi, ukusatshalaliswa kokushisa nosawoti, kanye nemiphumela yako esimweni sezulu, isimo sezulu sesifunda, kanye nezinsizakusebenza zasolwandle. Ngokusebenzisa idatha yokubuka ulwandle—njenge-Acoustic Doppler Current Profiler (ADCP), izindawo zokugcina ulwandle, i-Conductivity-Temperature-Depth (CTD), ama-drifter, kanye ne-altimetry yesathelayithi elinganisiwe—abacwaningi bangakwazi ukumaka izakhiwo zamanje kusukela ebusweni kuya ekujuleni okuthile futhi bahlole izinguquko emaphethini wamanje phakathi kwezinkathi zonyaka.
Ukubuka Konke Kwe-Oceanography ye-Makassar Strait
I-Makassar Strait isebenza njengesango eliyinhloko le-ITF. Umsinga oyinhloko uvame ukuhamba usuka enyakatho uye eningizimu, uthonywa umehluko ezingeni lolwandle phakathi kwamanzi asentshonalanga yePacific kanye namanzi aphakathi e-Indonesia, kanye namaphethini omoya wemvula kanye namagagasi kaKelvin/Rossby asakazeka olwandle oluzungezile. I-bathymetry eyinkimbinkimbi yale strait—enezimbobo nemithambeka—idala iphrofayili yamanje engalingani, kokubili ngokuvundlile nangokuqondile.
Ngokwe-vertical, i-ITF current eMakassar Strait ivame ukubonisa isivinini esiphezulu ekujuleni kwe-thermocline, hhayi ngaso sonke isikhathi ebusweni. Lokhu kuhlobene nokuhlukaniswa, ukucheba komoya ongaphezulu, kanye nokuba khona kwengqimba exubile, ubukhulu bayo obuhlukahluka ngokwezinkathi zonyaka. Ngaphezu kwalokho, amathonya olwandle kanye namagagasi angaphakathi kuguqula i-current esikalini sansuku zonke kuya masonto onke.
Imithombo kanye Nezinhlobo Zedatha Yokubuka Olwandle
Izifundo zamanje zesizini zihlanganisa kahle izinhlobo eziningana zedatha yokubuka ukuze kuthathwe ukuhlukahluka kwendawo nesikhathi:
1. I-ADCP Yokubopha: Ithuluzi le-ADCP elifakwe ku-mooring liyakwazi ukurekhoda amaphrofayili ejubane lamanje ekujuleni okuhlukahlukene ngokuqhubekayo (isb., ngehora). Le datha ibalulekile ekubhekeni izinguquko zesizini, kufaka phakathi ukushintsha kokujula okukhulu kwamanje kanye nokuqina kokuthutha.
2. Ukulinganiswa kwe-CTD: Amaphrofayili okushisa nosawoti avela kuma-CTD asiza ekuboneni isakhiwo samanzi, ukujiya kwezingqimba ezixubile, ukujula kwe-thermocline, kanye nokuqina kwekholomu yamanzi okuthonya imisinga yamanzi.
3. I-Drifter kanye ne-Argo Float: I-surface drifter ichaza ugesi ongaphezulu, kuyilapho i-Argo float inganikeza inkomba yokuhamba kwamanzi amaningi ekujuleni okuthile kokupaka.
4. Ukuhlaziywa kabusha kwe-Satellite Altimetry kanye noMoya: Ukungalingani kwezinga lolwandle kanye nedatha yomoya kusiza ekuchazeni amandla amakhulu okushayela njenge-gradient yokucindezela, kanye nokusabela kolwandle ezimonweni.
5. Idatha Yokugeleza Kolwandle: Ukuze kuhlukaniswe izingxenye zamanje okugeleza kolwandle kanye nemisinga eseleyo (engeyona eyokugeleza kolwandle), kudingeka idatha yokugeleza kolwandle noma ukuhlaziywa kwe-harmonic.
Ukucubungula idatha ngokuvamile kuhilela ukulawulwa kwekhwalithi, ukuhlunga ukuze kuhlukaniswe izikali zesikhathi ezithile (isb. nsuku zonke vs zesizini), kanye nokubala izibalo zesizini (isilinganiso se-DJF, i-MAM, i-JJA, i-SON, noma ukuhlukaniswa kweNtshonalanga ne-East Monsoon).
Uhlaka Lwezinkathi e-Indonesia kanye Nomthelela Walo Emifuleni
Ukwehluka kwezinkathi emanzini ase-Indonesia ngokuvamile kubangelwa uhlelo lwezimvula:
– Imvula Yasentshonalanga (cishe ngoNovemba–Mashi): Umoya onamandla uvunguza usuka enyakatho-ntshonalanga uye eningizimu-mpumalanga. Lesi simo sivame ukuhlotshaniswa nemvula enkulu kanye noshintsho emaphethini okujikeleza komhlaba.
– Imvula YaseMpumalanga (cishe ngoMeyi–Septhemba): Imimoya enamandla ivela eningizimu-mpumalanga iye enyakatho-ntshonalanga. Lesi sikhathi sonyaka sivame ukuletha izimo ezomile ezingxenyeni eziningi zase-Indonesia futhi singaqinisa izinqubo zokuphakamisa amanzi kwamanye amanzi.
– Isizini Yesikhashana (cishe ngo-Ephreli nango-Okthoba): Imimoya iba buthaka futhi ishintshe indlela; ukushintshashintsha kwendawo (isib. amagagasi, imisinga ye-eddy) kungabonakala kakhulu.
E-Makassar Strait, yize i-ITF ivame ukugeleza iye eningizimu unyaka wonke, ukuqina kwayo kanye nesakhiwo sayo esiqondile kungahluka ngokwezinkathi zonyaka. Ithonya lemvula libonakala ngokushintsha komoya ongaphezulu, ukulungiswa kwezinga lolwandle lwesifunda, kanye noshintsho ekuhlukanisweni kwezindawo ezilawula indlela umfutho odluliselwa ngayo ekujuleni.
Amaphethini Amanje Esizini Asekelwe Kudatha Yokubuka
1. Imvula Yasentshonalanga: Ukuguquguquka Komphezulu Nokuqinisa Ungqimba Oluphezulu
Ngokusekelwe ekubonweni kwe-ADCP kanye nokuzulazula, imisinga engaphezulu ingabonisa ukuguquguquka okukhulu ngesikhathi seNtshonalanga yeMonsoon ngenxa yemimoya enamandla kanye nezimo zamagagasi ezishintshayo. Kwezinye izikhathi, imisinga engaphezulu ingaba buthaka uma kuqhathaniswa nezinye izinkathi ngenxa yokwanda kwamanzi kanye noshintsho ekucindezelweni kwesifunda. Kodwa-ke, imisinga eseningizimu njengengxenye ye-ITF isabonakala, ikakhulukazi ekujuleni kwe-thermocline.
Ukulinganiswa kwe-CTD phakathi nalesi sikhathi sonyaka kuvame ukukhombisa ungqimba oluxubile olujulile kwezinye izindawo ngenxa yokuxubana nomoya nemvula, okungenzeka kushintshe ukusatshalaliswa kokushisa nosawoti. Lokhu kuhlukaniswa okushintshiwe kungathinta ukujula okuphezulu kwamanje kanye nobukhulu bokungqubuzana okuqondile.
2. I-East Monsoon: Ukuqinisa i-ITF kanye neSakhiwo Esivelele se-Thermocline
Ngesikhathi se-East Monsoon, izifundo eziningi zokubuka zibonisa ukuthambekela kokuhamba kwe-ITF kuqina eMakassar Strait. Njengoba imimoya enamandla yaseningizimu-mpumalanga kanye nokuguquguquka kwesifunda kuvumela ukuthambekela kokucindezela okuvela ePacific kuya e-Indonesia ephakathi, imisinga yaseningizimu ingaba namandla futhi ihleleke kakhudlwana.
Idatha yokubopha i-ADCP ivame ukukhombisa ijubane elikhulu kakhulu ku-thermocline (isb., amamitha ambalwa okuqala), kuyilapho ubuso bungathonywa amandla omoya endawo kanye nezinqubo zokuxuba. Ama-CTD phakathi nalesi sikhathi sonyaka avame ukukhombisa i-thermocline ebukhali, okubonisa ukuhlukaniswa okuqinile "okukhiya" ugesi ophezulu ekujuleni okuthile.
3. Izinkathi Zokuguquka: Indima Ka-Eddy, Amagagasi Angaphakathi, kanye Namagagasi
Ngesikhathi sokushintsha kwesimo sezulu, njengoba imimoya iba buthaka futhi iba nokuguquguquka okukhulu, isignali yamanje yesizini ingadideka ngenxa yokuguquguquka kwesilinganiso esifushane. Idatha ye-ADCP enesinqumo esiphezulu ivame ukuveza ukuguqulwa okunamandla kwe-tidal kanye nokuba khona kwemicimbi yamagagasi angaphakathi ekhulisa ukucheba okuqondile.
Phakathi nalesi sikhathi, imisinga ye-eddy evela oLwandle iSulawesi noma oLwandle iFlores ingathonya imisinga e-strait. I-altimetry yesathelayithi ingasiza ekuboneni ukungalingani kwezinga lolwandle okuhlobene nama-eddie, ngaleyo ndlela kuqiniswe ukuchazwa kwedatha ye-in-situ.
Ukuhlaziywa Kwezokuthutha kanye Nemiphumela
Amaphethini wamanje esizini awawona nje ushintsho endleleni kanye nesivinini, kodwa futhi ahlobene nokuthuthwa kwevolumu (ukukhishwa kwamanje) okudlula eMakassar Strait. Izibalo zokuhamba ngokuvamile zenziwa ngokuhlanganisa iphrofayili yejubane nokujula nobubanzi bomsele (ngokubheka imikhawulo yokumbozwa kwezinsimbi).
Izinguquko zokuthuthwa kwe-ITF zinemiphumela ebanzi:
1. Isimo Sezulu Sesifunda Nesomhlaba Wonke: I-ITF ihambisa ukushisa namanzi ahlanzekile, ithonya ukugeleza kolwandle i-Indian Ocean kanye nokuguquguquka kwesimo sezulu njengemvula yase-Australia kanye ne-Indian Ocean Dipole.
2. Ukukhiqizwa Kwamanzi: Ukwehluka kwamanje kuthinta ukusatshalaliswa kwezakhamzimba, amandla okukhuphuka kwendawo, futhi ekugcineni kuthinta ikhwalithi yendawo yokuhlala yezinhlanzi.
3. Ukuphepha Kokuthunyelwa Kwemikhumbi kanye Nemisebenzi Yasogwini: Ulwazi lwamanje lwesizini lusiza ekuhleleni imizila yokuthunyelwa kwemikhumbi, ukufaka izintambo/amapayipi omkhumbi-ngwenya, kanye nokunciphisa ubungozi.
4. Ukusatshalaliswa Kwezinto Ezingcolisayo Zasolwandle kanye Nemfucumfucu: Amaza onyaka anquma isiqondiso kanye nesivinini sokusatshalaliswa kwezinto ezintantayo, okubalulekile ekuphenduleni kwemvelo.
Izinselele Ezifundweni Ezisekelwe Ekuqaphelisweni
Nakuba idatha yokubuka ibaluleke kakhulu, izinselele eziningana zivame ukuvela: iziteshi zokubuka ezilinganiselwe, ukuphazamiseka kwedatha ngenxa yokungcola kwe-biofouling noma ukwehluleka kwemishini, kanye nokungafani kwesikhathi. Ngaphezu kwalokho, i-Makassar Strait ithonywa amagagasi anamandla kanye ne-topography eyinkimbinkimbi, ngakho-ke ukuhlukanisa izimpawu zokubuka, zangaphakathi kwesizini, kanye nezesizini kudinga izindlela ezifanele zokuhlaziya. Ukuhlanganisa idatha yangaphakathi nemikhiqizo yesathelayithi kanye namamodeli ezinombolo alinganisiwe ngokuvamile kuyindlela engcono kakhulu yokuqinisa iziphetho.
Isiphetho
Ucwaningo lwamaphethini wamanje wesizini eMakassar Strait kusetshenziswa idatha yokubuka ulwandle lubonisa ukuthi ugesi oyinhloko oseningizimu, oyingxenye yoMsinga Wolwandle lwase-Indonesia (i-Arlindo), uyaqhubeka unyaka wonke, kodwa amandla awo kanye nesakhiwo sawo esiqondile kuyahlukahluka ngokwezinkathi. I-East Monsoon ivame ukuhlotshaniswa nemisinga ye-ITF ekhulisiwe kanye nezokuthutha, kuyilapho i-West Monsoon ibonisa ukuguquguquka okuyinkimbinkimbi kobuso okuthonywa yizici zomkhathi kanye nokuhlukaniswa. Isizini yokuguquka yisikhathi lapho izinqubo zesikali esifushane—amagagasi, amagagasi angaphakathi, kanye nama-eddies—zivame ukubonakala zinamandla kakhulu esignalini yamanje ebonwayo.
Ngokwandisa inethiwekhi yokubuka (ukubopha isikhathi eside, ukuhlola okuvamile kwe-CTD, ama-drifting, kanye nokusekelwa kwesathelayithi), ukuqonda kwethu ukuguquguquka kwesizini kweMakassar Strait kungathuthukiswa njalo. Lolu lwazi lubalulekile hhayi kuphela kwisayensi yasolwandle kodwa futhi nasekuphathweni kwezinsiza, ukuphepha kolwandle, kanye nokuzivumelanisa nokuguquguquka kwesimo sezulu e-Indonesia nangale kwayo.
