Ingabe iMount Saint Helens isasebenza?
Context:INtaba iSt Helens (eyaziwa ngokuthi iLawetlat'la kubantu bomdabu baseCowlitz, kanye neLoowit noma iLouwala-Clough kumaKlickitat) iyi-stratovolcano esebenzayo etholakala eSkamania County, eWashington, esifundeni sasePacific Northwest e-United States. Itholakala amakhilomitha angu-83 enyakatho-mpumalanga yePortland, e-Oregon, futhi ingamakhilomitha angu-158 eningizimu yeSeattle. INtaba iSt. Helens ithola igama layo lesiNgisi kwelamdiplomathi waseBrithani uLord St. Helens, umngane womhloli wamazwe uGeorge Vancouver owahlola le ndawo ngasekupheleni kwekhulu le-18. Le ntaba-mlilo iyingxenye yeCascade Volcanic Arc, ingxenye yePacific Ring of Fire.  Ukuqhuma okukhulu kweNtaba iSt. Helens ngoMay 18, 1980 kuseyisenzakalo sentaba-mlilo esibulalayo nesibhubhisa kakhulu ngokwezomnotho emlandweni wase-U.S. Kwafa abantu abangu-57; imizi engu-200, amabhuloho angu-47, amakhilomitha angu-24 ezitimela, namakhilomitha angu-298 emigwaqo emikhulu kwabhujiswa. I-avalanche enkulu yemfucumfucu, eyaqalwa ukuzamazama komhlaba okungu-5.1, yabangela ukuqhuma kwe-lateral okwanciphisa ukuphakama kwesiqongo sentaba kusuka ku-9,677 ft (2,950 m) kuya ku-8,363 ft (2,549 m), kushiya isigodi esinjengebhentshi elibanzi eli-1 mile (1.6 km). I-avalanche yenkunkuma yayingamakhilomitha ayizi-cubic angu-0,6 (2.5 km3) ngobukhulu. Ukuqhuma kuka-1980 kwaphazamisa imvelo yasemhlabeni eduze kwentaba-mlilo. Ngokuphambene nalokho, imvelo yasemanzini kuleyo ndawo yazuza kakhulu emalini yomlotha, yavumela izinto eziphilayo ukuba zande ngokushesha. Eminyakeni eyisithupha ngemva kokuqhuma kwentaba-mlilo, amachibi amaningi akule ndawo ayesebuyele esimweni sawo esivamile.  Ngemva kokuqhuma kwayo ngo-1980, le ntaba-mlilo yaqhubeka iqhuma kwaze kwaba ngo-2008. Izazi zokwakheka komhlaba zibikezela ukuthi ukuqhuma okuzayo kuyoba okubhubhisa ngokwengeziwe, njengoba ukwakheka kwezigaxa ze-lava kudinga ingcindezi eyengeziwe ukuze kuqhume. Nokho, iMount St. Helens iyindawo ethandwayo yokuhamba izintaba futhi ikhuphuka unyaka wonke. Ngo - 1982, uMongameli uRonald Reagan ne - U.S. Congress bamisa iSikhumbuzo Sikazwelonke Sentaba - mlilo i - Mount St. Helens.
INtaba iSt. Helens, esesifundazweni saseWashington ibhekwa njengentaba-mlilo esebenzayo.