Mauna loa I-Hawaii iqhuma okokuqala ngqa eminyakeni engaphezu kwengu-40. I i-volcano enkulu kunazo zonke emhlabeni Usethathe isinqumo sokuvuka ekseni. I-Mauna Loa iqale ukuqhuma izolo ebusuku nemifantu emisha evuleka esiqongweni sentaba-mlilo.
Sizokutshela zonke izindaba mayelana nokuqhuma kwentaba-mlilo iMauna Loa.
Ukuqhuma kwentaba-mlilo iMauna Loa
Ukuqhuma okusha kweMauna Loa kubonakale eHawaii ngo-2:16 am. I-Mauna Loa iqhume ekuseni izolo isuka emgodini wayo ongaphezulu kakhulu, i-Moku'āweoweo. I-Giant Shield Volcano esiqhingini esikhulu saseHawaii ibingasebenzi iminyaka engama-38. Lokhu kuqhuma kulandele ukuqhuma okuningi kwesitayela saseHawaii, kunomfantu phezulu, imithombo ye-lava, kanye nokugeleza kwe-lava kuvela emigodini emisha.
Ngenxa yalo msebenzi omusha, i-USGS Hawaii Volcano Observatory iguqule isimo sokuxwayisa se-Mauna Loa sababomvu/Isexwayiso. Okwamanje, alukho usongo ezakhamuzini ezizungeze intaba-mlilo, njengoba ukuqhuma kungenzeka kuphelele esiqongweni. Nokho, kusukela onqenqemeni lwentaba, ukugeleza kwe-lava ngokushesha kwamboza umhlabathi.
I-USGS ibika ukuthi ukugeleza kwe-lava kuchitheke eningizimu-ntshonalanga ukusuka e-summit crater, kodwa ukuqhuma kusavela phezulu. Kodwa-ke, ukuvulwa kwamashafti amasha okungenisa umoya ngaphandle kwe-summit crater akukhishwa ngaphandle.
Ukugeleza kodaka lwe-Arctic kwenzeke kuzo zonke izinhlangothi zeMauna Loa, abanye babo beza endaweni manje ebizwa ngokuthi iHilo ngeminyaka yawo-1880. Iphinde ibe namandla okukhiqiza imisinga engafinyelela isuka eSouth Kona iye kolunye uhlangothi lwesiqhingi. Ngakho-ke, kunosongo lokugeleza kodaka olungase lufinyelele eningizimu-ntshonalanga, enyakatho-mpumalanga, nasenyakatho-ntshonalanga yeMauna Loa. Ngokuya ngokushuba kokuqhuma, inkungu yentaba-mlilo ingaba yingozi yokuphefumula.
ukuqhuma komlando
Njengoba amamephu e-lava egeleza kusukela eminyakeni engama-200 edlule ekhombisa, I-Mauna Loa iyintaba-mlilo eqhuma kakhulu. Lesi sikhathi sokuqhuma seminyaka ecishe sibe ngu-40 asivamile emlandweni wako wanamuhla. Kube nezimpawu ezinyangeni ezedlule zokuthi intaba-mlilo iyaqhuma, nokwanda kokuzamazama komhlaba ngaphakathi kwentaba-mlilo. Ingqungquthela ibonakala ikhubazekile kancane kuze kube yilapho kuqala ukuqhuma okusha.
Ukuqhuma okusha kusho ukuthi kokubili i-Mauna Loa kanye I-Kilauea ziqhuma esiqhingini esikhulu. Ukuqhuma okukabili akuyona into engavamile eHawaii, nakuba kuye kwaba nokusikisela okuthile phakathi neminyaka eyinkulungwane edlule okungenzeka ukuthi lezi zintaba-mlilo ezimbili zashintshana. Zombili lezi zintaba-mlilo zaqhuma ngo-1975 nango-1984, kodwa iKilauea kuphela eye yaqhuma kusukela maphakathi nawo-1980.
Zombili lezi zintaba-mlilo zigcina ziphakelwa indawo eshisayo engaphansi kweHawaii: isitimela sengubo eshisayo ekhuphuka isuka ekujuleni koMhlaba, inyibilika njengoba ifika ngaphansi koqweqwe lwamamayela olwandle ngaphansi kwesiqhingi. Nakuba zombili lezi zintaba-mlilo zidalwe yilo mbhobho we-mantle, ukwakheka kwe-isotopic kanye ne-trace element yodaka oluqhumayo lwaseMauna Loa naseKilauea luyahluka kakhulu kangangokuthi ukucwaninga kokwakheka komhlaba kwezintaba-mlilo zaseHawaii. Ososayensi bayakukholelwa lokho zingase zivele ezingxenyeni ezahlukene ze-mantle plume.
Ngithemba ukuthi ngalolu lwazi ungafunda kabanzi mayelana nokuqhuma kwe-Mauna Loa nezici zakhona.
Siyabonga ngolwazi olusha kangaka, kuhle ukwazi ukuthi iPlanethi yethu enhle inyakaza kanjani okufanele siyilondoloze ukuze izizukulwane ezintsha ziyijabulele.