Nrog rau kev paub ntawm lub roob hluav taws La Palma, nws rov ua rau muaj kev ntshai qub, uas tau nrog palmeros rau ntau xyoo lawm. Puas yog volcanic edifice ntawm Cumbre Vieja ruaj khov? Puas tuaj yeem sab qaum teb ntawm cov kob tawg? Cov kws tshaj lij ntshai tsam "kev puas tsuaj loj" ntawm ib feem ntawm lub khob hliav qab, uas tsis tshwm sim. Cov kab nrib pleb ntawm hnub kawg ntawm kev ua ub no tuaj yeem yog tus yuam sij uas zam qhov xwm txheej.
Kev ruaj ntseg ntawm thaj tsam sab hnub poob ntawm cov kob tau kawm ntau xyoo lawm, nrog rau kev soj ntsuam uas suav nrog kev kwv yees qhov kev puas tsuaj uas qhov kev sib tsoo no yuav muaj: Ib qho tsunami loj uas yuav hla Atlantic. Cov kws tshaj lij tau tshem tawm qhov kev txhawj xeeb no hauv zej zog hauv kev tshaj tawm tsis ntev los no los ntawm cov kws tshawb fawb Mercedes Ferrer, Senior Researcher ntawm IGME-CSIC, thiab Luís González de Vallejo, Honorary xibfwb ntawm Complutense University of Madrid (UCM) thiab tus thawj coj ntawm Volcanic Risks cheeb tsam ntawm Lub koom haum Volcanological ntawm Canary Islands (Involcán) nyob rau hauv cov ntawv xov xwm nto moo 'Science', tau lees tias lub tsev Cumbre Vieja yog mechanically ruaj khov nyob rau hauv lub sij hawm ntev.
Lub tsev no ruaj khov nyob rau hauv feem ntau ntawm cov tib neeg teev, uas txhais tau hais tias nws yuav muaj sia nyob tam sim no cov ntoo xibtes, tsis hais txog cov yam ntxwv ntawm lub roob hluav taws uas cuam tshuam nrog kev tawg tsis ntev los no ntawm Cumbre Vieja xyoo 2021, uas ua rau muaj kev hem thawj ntawm keeb kwm, lawv tau hais.
Nrog rau qhov tawg ntawm lub roob hluav taws uas tsis muaj npe nyob hauv Cumbre Vieja, qhov ua tau ntawm ib feem ntawm lub cev qhuav dej tau cog, ib qho 'collapse' ntawm ib feem ntawm lub khob hliav qab uas thaum kawg tsis tshwm sim ntawm qhov loj. Qhov tawg, uas tau pib thaum lub Cuaj Hlis 19, 2021 thiab xaus tom qab 85 hnub thiab 8 teev, yog qhov tawg loj tshaj plaws thiab nrov tshaj plaws ntawm La Palma. Nrog ntau tshaj 200 lab cubic meters ntawm lava thiab VEI3 explosiveness Performance index, lawv tso tawm lub tswb, raws li cov kws tshawb fawb nco qab nyob rau hauv phau ntawv journal 'Science'.
Thaum Lub Kaum Hli 3, 8 thiab 23, 2021, ib feem ntawm lub khob hliav qab tau tawg, tsim txoj hauv kev tshiab ntws thiab thaiv qhov tsis zoo ntawm qhov loj ntawm peb-zaj dab neeg uas tau nqis los rau hauv qhov chaw siab tshaj. Lub tswv yim ntawm kev sib tsoo dav dav tau diluted ntawm cov kob.
Raws li tau piav qhia hauv daim ntawv tshawb fawb, cov lus nug tseem ceeb tseem ceeb yog vim li cas qhov kev tawg no tsis tsim kom muaj kev puas tsuaj loj ntawm lub roob hluav taws kub hnyiab, raws li tej zaum xav tau. Cov lus teb yuav raug txuas, nws muaj nws cov yam ntxwv sib txawv ntawm volcanic-tectonic thiab, tshwj xeeb tshaj yog, nws muaj "txoj kev tsis sib xws ntawm cov kab nrib pleb uas tau nyob hauv lub sijhawm kawg ntawm kev tawg".
Cov kab nrib pleb no tau pom los ntawm tib neeg, ua tsaug rau kev saib xyuas thiab cov ntaub ntawv qhia hnub los ntawm seismologists, geologists thiab volcanologists hauv av. Tus thawj coj ntawm IGN, María José Blanco, zoo li nws cov npoj yaig Carmen López thiab Stavros Meletlidis tau nyeem hauv nws phau ntawv Pevolca, tias "nws tuaj yeem pom ib feem ntawm lub khob hliav qab" thiab ua ntej cov tsos ntawm fissures lawv tau hu rau kom siab, cia siab tias yuav paub txog nws. yuav mus rau sab hauv ntawm lub khob hliav qab, thiab tsis yog lwm txoj kev nyob ib ncig ntawm.
Cov kab nrib pleb thiab tawg tau sau npe nyob rau hnub kawg ntawm lub roob hluav taws, thaum pib lub Kaum Ob Hlis. Lub sijhawm ntawd, tus thawj coj ntawm Central Geophysical Observatory ntawm National Geographic Institute (IGN) tau tshaj tawm rau pawg kws tshawb fawb ntawm Pevolca (Canary Islands Volcanic Emergency Plan (Pevolca), Carmen López, piav qhia tias lawv tuaj yeem hloov zuj zus thiab ua rau muaj av qeeg thiab tawg sab hauv. lub Crater Ntawd yog, nrog rau cov txiaj ntsig hauv zos uas yuav tsis ua rau kev ruaj ntseg ntawm lub tsev volcanic, txij li lawv tsuas yog tshwm sim nyob rau hauv cheeb tsam sab qaum teb sab hnub tuaj ntawm lub tsev loj.
Lub khob hliav qab ntawm lub roob hluav taws La Palma muaj ntau qhov tawg ntawm nws lub tsev nyob rau sab qaum teb sab hnub tuaj. pic.twitter.com/DJL6fUTtZF ib
— 🏳️🌈Rubén López 🇪🇸 (@rubenlodi) Plaub Hlis 6, 2021
Vim muaj kev saib xyuas zoo, qhov kev tawg no yuav tso cai rau kev sim ntau yam ntawm cov tswv yim tshawb fawb, los ntawm qhov tseem ceeb ntawm qhov ua tau 436-xyoo supercycle ntawm eruptions ntawm kev txo lub sij hawm mus rau kev siv cov geophysical soj ntsuam kom to taub yuav ua li cas magma khaws cia thiab migrate. dents ntawm ib tug vertically extending sab sauv mantle thiab crustal magmatic system. Cov hom magmatic thiab volcanological cov ntaub ntawv no yuav hloov volcanic eruption kev ntsuam xyuas thiab kev npaj mus sij hawm ntev.
Ib feem ntawm cov ntaub ntawv tseem ceeb no tau raug xa mus los ntawm cov pab pawg Involcán mus rau cov kob ntawm São Jorge hauv Azores (Portugal), uas tau mus rau cov kob los pab saib xyuas thiab ua raws li cov haujlwm hauv lub ntsej muag ntawm qhov muaj feem yuav tshwm sim tuaj yeem tshwm sim,
