ka Jack Lee, American Geophysical Union
Letoto la litšisinyeho tsa lefatše le litšisinyeho tse latelang li ile tsa sisinya sebaka sa Ridgecrest Southern California ka 2019. Distributed acoustic sensing (DAS) sebelisa lithapo tsa fiber-optic li nolofalletsa litšoantšo tse ka tlas'a lefatše tse nang le qeto e phahameng, tse ka hlalosang katoloso ea sebaka se hlokometsoeng sa tšisinyeho ea lefatše.
Hore na mobu o sisinyeha hakae nakong ea tšisinyeho ea lefatše ho itšetlehile ka matla a mafika le mobu o ka tlas'a lefatše.Liphuputso tsa mohlala li fana ka maikutlo a hore ho sisinyeha ha fatše ho matlafatsoa ka har'a libaka tsa sedimentary, moo libaka tsa litoropo tse nang le baahi ba bangata hangata li leng teng.Leha ho le joalo, mokhoa oa ho nka litšoantšo o haufi le bokaholimo ho potoloha libaka tsa litoropo tse nang le tharollo e phahameng e bile phephetso.
Yang et al.ba hlahisitse mokhoa o mocha oa ho sebelisa distributed acoustic sensing (DAS) ho haha setšoantšo se phahameng sa boemo bo haufi-ufi.DAS ke mokhoa o hlahang o ka fetolang o tenglikhoele tsa fiber-opticka mekhahlelo ea seismic.Ka ho beha leihlo liphetoho tse mabapi le hore na maqhubu a bobebe a hasana joang ha a ntse a tsamaea ka thapo, bo-ramahlale ba khona ho bala liphetoho tse nyane linthong tse potileng fiber.Ntle le ho rekota litšisinyeho tsa lefats'e, DAS e ipakile e le molemo lits'ebetsong tse fapaneng, joalo ka ho reha sehlopha se lerata ka ho fetesisa ho Rose Parade ea 2020 le ho senola liphetoho tse kholo tsa sephethephethe sa likoloi nakong ea litaelo tsa COVID-19 tsa ho lula hae.
Bafuputsi ba pele ba ile ba sebelisa fiber e bolelele ba lik'hilomithara tse 10 ho bona litšisinyeho tse latelang tsa tšisinyeho ea lefatše ea boholo ba 7.1 Ridgecrest California ka Phupu 2019. Sehlopha sa bona sa DAS se fumane litšisinyeho tse nyane tse imenang ka makhetlo a tšeletseng ho feta li-sensor tse tloaelehileng nakong ea likhoeli tse 3.
Phuputsong e ncha, bafuputsi ba ile ba hlahloba lintlha tse tsoelang pele tsa seismic tse hlahisoang ke sephethephethe.Lintlha tsa DAS li lumelletse sehlopha ho theha mofuta o haufi-ufi oa lebelo la ho kuta ka qeto ea subkilometer tse peli tsa boholo bo phahameng ho feta mefuta e tloaelehileng.Moetso ona o ile oa senola hore ho latela bolelele ba tlhale, libaka tseo ho tsona litšisinyeho tsa morao-rao li ileng tsa hlahisa ho sisinyeha ho eketsehileng ha fatše hangata li ne li tsamaisana le moo lebelo la ho kuta le neng le le tlaase.
'Mapa o joalo oa boemo bo botle ba kotsi ea ho sisinyeha ha lefatše o ka ntlafatsa taolo ea kotsi ea ho sisinyeha ha literopo, haholo litoropong moo marang-rang a fiber-optic a seng a ntse a le teng, bangoli ba fana ka maikutlo.
Nako ea poso: Jun-03-2019