Ngamanye amaxesha indalo inokusothusa sisixa sezinto ezingaqhelekanga nezingachazekiyo ezikhoyo. Iindawo ezibonakala ngathi zithathiwe kumabali, izinto ezingenakucaciswa nakwezenzululwazi. bucala ngasekhohlo yimeko yomlambo iSlims, umlinganiswa ophambili wento engaqondakaliyo nengaqhelekanga eyenzekileyo kwimbali yethu yamva nje.
Ukuza kuthi ga ngoku, akukho nto ibaluleke ngolu hlobo sele ibhaliwe. Kwaye lo mlambo womile kwaye wanyamalala kwisithuba seentsuku ezine. Ngaba uyafuna ukwazi ukuba kwenzeke njani kwaye kutheni?
UMlambo iSlims
Lo mlambo ukumantla weKhanada kwaye kangangamakhulu eminyaka ubuthwele amanzi anyibilikayo emantla. Amanzi aqukuqela esuka eKaskawulsh Glacier eCanada Yukon Territory esiya kuMlambo iKluane, emva koko aqhubeka aya kuLwandle lweBering. Kodwa le yinto eqhele ukwenzeka. Nangona kunjalo, Ngentwasahlobo edlulileyo ka-2016 kwenzeka into engaqhelekanga eyatshintsha yonke into.
Ngokufanelekileyo, ngenxa yobushushu behlabathi, ixesha lokunyibilika okukhulu komkhenkce lonyukile kwaye oku kubangele ukuthambeka apho umlambo utsalela khona ukuthobela umlambo wesibini ohambisa amanzi kwakhona kwiGulf of Alaska, ebekwe amawaka eekhilomitha ukusuka kumkhondo wokuqala.
Bejamelene nale nto, kwafunyaniswa ukuba amanzi omlambo ehle kakhulu, phakathi kuka-Meyi 26 nowama-29, 2016. Bejamelene nemeko enjalo, bafuna ukwazi ukuba ayaphi onke loo manzi kwaye yahlalutywa kusetyenziswa iidrones kunye ntaka. Ukumangaliswa koluntu lwezenzululwazi, Umtyholwa wokunyamalala komlambo kwiintsuku nje ezine ibikukubanjiswa komlambo. Yile ndlela ekubizwe ngayo le nto ingazange ibonwe ngaphambili kwimbali.
Ukubanjwa komlambo
Le nto sisiganeko se-hydrographic esiqulathe ukhukuliseko oluveliswe ngamanzi omlambo obaluleke kangangokuba uyakwazi ukuvula umsantsa kwitshaneli yomnye umlambo, Ukuthimba amanzi ayo kwaye uyiyeke ingahambi. Into enomdla malunga nale nto kukuba ubungqina bembali yolu hlobo lwesimo bacebisa ukuba kuthatha amawaka eminyaka ukuphelisa ixesha elaneleyo ukunika le nkqubo. Nangona kunjalo, ngeli xesha kwenzeke kwiintsuku nje ezine.
Abaphandi baye baya eSlims River ukuyokufumanisa ukuba kutheni le nto yenzekile eYukon ngo-Agasti ka-2016. Umnqa ngowokuba, ekufikeni kwabo emlanjeni, oqhele ukuhamba umgama omalunga ne-480 yeemitha ububanzi, wanyamalala.
NgokukaJames Best, isayensi yokuma komhlaba kwiYunivesithi yaseIllinois, kwenzeka oku kulandelayo:
Saya kule ndawo ngeenjongo zokuqhubeka nemilinganiselo yethu kwi-River Slims, kodwa safumana umlambo womile ngokungaphezulu okanye kancinci. Umphezulu wentaba-mlilo esasihamba ngayo kwisikhephe esincinci ngoku yayisisiphango sothuli. Ngokumalunga notshintsho lomhlaba yayimangalisa ngendlela emangalisayo.
Le meko yatshayela konke ukuhamba kwe-River Slims, nangona kunjalo, okwahlukileyo kwenzeka kuMlambo i-Alsek. Ngokufunxa konke ukuhamba kwe-Slims, eyakhe yonyuswe kakhulu.
Kutheni le nto yenzekile?
Ukucacisa into enkulu kangaka enje, izifundo zenziwe ebaleni kwaye bonke bafikelela kwisigqibo esifanayo: bayachaphazeleka lutshintsho lwemozulu. Ukunyuka kwamaqondo obushushu ehlabathi kunye nokubuyela umva komkhenkce kubangele ixesha lokunyibilika okukhulu kunye nokombiwa kwejelo elitsha emkhenkceni. Le nyaniso yile eyalele ukuhamba kwamanzi ukuya emazantsi ngomlambo iKaskawulsh.
Oku kuthetha ukuba endaweni yokuphelela kuLwandle lweBering ngeLake Kluane, amanzi anyibilikayo ngoku ahamba kwicala elingasezantsi-mpuma kwaye ekugqibeleni afike kuLwandlekazi lwePasifiki. Inguquko enkulu, kwaye ayisiyiyo nje kuba ilixesha lokuqala ukubanjwa komlambo kwenzeke ngokukhawuleza okukhulu, kodwa kungenxa yokuba kunjalo Ityala lokuqala apho oososayensi bacinga ukuba le nto yenzeke ngenxa yotshintsho lwemozulu olwenziwe ngabantu.