Isihloko: Ukuqhuma Kwezintaba-mlilo: Isenzakalo Semvelo Esimangalisayo Nesiyingozi
I-Pendahuluan
Izintaba-mlilo zingenye yezimangaliso zemvelo ezithakazelisa kakhulu nezesabekayo. Ngamandla azo amakhulu, ukuqhuma kwezintaba-mlilo kungaba yingozi futhi kube nenzuzo empilweni eMhlabeni. Lesi sihloko sizoxoxa ngokuqhuma kwezintaba-mlilo, kusukela ekwakhekeni kwazo kuya emthonjeni wazo emvelweni nakubantu, nokuthi singazinciphisa kanjani izingozi ezibangelwa yizo.
Ukwakheka Kwezintaba-mlilo
Izintaba-mlilo zakhiwa ukunyakaza kwamapuleti e-tectonic ebusweni boMhlaba. Lawa mapuleti ahamba kancane kodwa agcwele ingcindezi namandla. Lapho amapuleti amabili eshayisana noma ehlukana, kwakheka igebe kanye nendlela yokuthi i-magma—idwala elincibilikisiwe ngaphansi kobuso boMhlaba—iphakame. I-Magma efika ebusweni ibizwa ngokuthi i-lava, futhi lokhu kugeleza kwakha isakhiwo sentaba-mlilo ngokuhamba kwesikhathi.
Izinhlobo zezintaba-mlilo
Kunezinhlobo ezintathu eziyinhloko zezintaba-mlilo: izintaba-mlilo ezivikelayo, izintaba-mlilo ezivikelayo, kanye nezintaba-mlilo zaseCaldera. Izintaba-mlilo ezivikelayo zinemithambeka ethambile futhi zakhiwa yi-lava egeleza kancane, isibonelo yiNtaba iMauna Loa eHawaii. Izintaba-mlilo ezivikelayo, njengeNtaba iMerapi e-Indonesia, zinemithambeka emide kakhulu kanye nokuqhuma okukhulu okuqhumayo. Izintaba-mlilo ezivikelayo ziyimigoqo emikhulu eyakheka ngemva kokuqhuma okukhulu kwezintaba-mlilo, njengaleyo eseToba, eSumatra.
Indlela Yokuqhuma
Ukuqhuma kwezintaba-mlilo kwenzeka lapho ingcindezi ngaphakathi kwegumbi le-magma ikhuphuka futhi ifinyelela endaweni lapho ubuso bungasenakukwazi ukuyigcina khona. Kunezinhlobo eziningana zokuqhuma ngokusekelwe ekuqineni kwazo kanye nezinto ezikhishwayo, njengokuqhuma kwe-effusive, okukhiqiza i-lava ewuketshezi, kanye nokuqhuma okuqhumayo, okukhipha izinto eziqinile namagesi emkhathini. Lokhu kuqhuma okuqhumayo kuvame ukukhipha amafu ashisayo, umlotha wentaba-mlilo, kanye namagesi anobuthi angaba yingozi empilweni.
Umphumela Wokuqhuma Kwezintaba-mlilo
Ukuqhuma kwezintaba-mlilo kunemiphumela ebalulekile kwezemvelo, emihle nemibi. Imiphumela emibi ihlanganisa ukulimala kwezakhiwo zemvelo nezenziwe ngabantu, ukulahlekelwa ukuphila kwabantu nezilwane, kanye nokungcoliswa komoya. Umlotha wezintaba-mlilo ungasibekela isibhakabhaka, uphazamise ukundiza, futhi ubangele izinkinga zokuphefumula. I-lava egelezayo ingabhubhisa konke okusendleleni yayo, kuyilapho ukugeleza kwe-pyroclastic kungahamba ngesivinini esikhulu futhi kube yingozi.
Kodwa-ke, ukuqhuma kwezintaba-mlilo nakho kunemiphumela emihle. Izinto ezibangelwa yizintaba-mlilo zingacebisa inhlabathi, okuholela endaweni yezolimo evundile ezindaweni eziningi ezizungeze izintaba-mlilo. Ngaphezu kwalokho, ukuqhuma kungadala indawo enhle, kudonsele izivakashi, futhi kuhlinzeke ngamathuba ezomnotho emiphakathini yendawo.
Ukunciphisa Ingozi
Ukubhekana nengozi yokuqhuma kwezintaba-mlilo kudinga imizamo emikhulu yokunciphisa. Ukuqapha izintaba-mlilo kusetshenziswa ubuchwepheshe obuthuthukisiwe njenge-seismometers nama-satellite kubalulekile ekutholeni umsebenzi okhombisa ukuqhuma okungenzeka. Ngalolu lwazi, izindawo ezingase zithinteke zingasuswa ngokushesha okukhulu.
Kubalulekile futhi ukufundisa imiphakathi ehlala eduze kwezintaba-mlilo ngalokho okufanele ikwenze uma kwenzeka ukuqhuma. Ukuqeqeshwa kokususa abantu ezindlini kanye nosizo lokuqala kungaba yingxenye yohlelo olusebenzayo lokunciphisa ubungozi.
Isiphetho
Ukuqhuma kwezintaba-mlilo kuyizinto zemvelo eziyinselele futhi ezithakazelisayo. Nakuba kungaba nemiphumela emibi kakhulu, abantu bafunde ukuqaphela izimpawu zokuqala zokuqhuma futhi bathuthukise amasu okunciphisa ubungozi. Ngobuchwepheshe obuyinkimbinkimbi kakhulu kanye nekhono lokwabelana ngolwazi kabanzi, singanciphisa usongo lokuqhuma kwezintaba-mlilo empilweni yabantu futhi sandise izinzuzo ezingaletha. Inselelo ezayo ukugcina ibhalansi phakathi kokukhulisa izinzuzo zezintaba-mlilo nokugcina ukuphepha kanye nokusimama kwemvelo.
