Sidee bay u badantahay in dhulgariirka Cascadia uu dhaco 50ka sano ee soo socota iyo sidee ayuu u xumaanayaa?
Context:Saadaasha cilmiga dhulka waxay muujinaysaa in "dhulgariirro waaweyn" (kuwa leh 8 magnitude ama ka sareeya) ay ka dhacaan aagga Cascadia ee hoos u dhaca celcelis ahaan 500 sano kasta, oo inta badan ay weheliso tsunami. Waxaa jira caddeymo ugu yaraan 13 dhacdo oo kala go'ah qiyaastii 300 illaa 900 oo sano oo celcelis ahaan ah 570<unk>590 sano. Dhulgariirro hore ayaa lagu qiyaasay inay ahaayeen AD 1310, AD 810, AD 400, 170 BC iyo 600 BC. [ xigasho loo baahan yahay ]  Ilaha dhulgariirka ee Cascadia  Sida lagu arkay dhulgariirkii 1700, dhulgariirkii Badweynta Hindiya ee 2004, iyo dhulgariirkii 2011 ee Tōhoku iyo tsunami, dhulgariirrada aagga hoos u dhaca waxay sababi karaan tsunamiyo waaweyn, iyo meelo badan oo xeebeed oo ku yaal gobolka ayaa diyaariyey qorshayaal daadgureyn tsunami ah iyagoo filaya dhulgariir mustaqbalka Cascadia ah. Si kastaba ha ahaatee, magaalooyinka waaweyn ee u dhow, sida Seattle, Portland, Vancouver, Victoria, iyo Tacoma, oo ku yaal waddooyinka biyaha ee gudaha ah halkii ay ka ahaan lahaayeen xeebta, way ka badbaadi lahaayeen khatarta ugu weyn ee tsunami. Magaalooyinkaas waxay leeyihiin dhismayaal badan oo nugul, gaar ahaan buundooyinka iyo dhismayaasha lebenka ah ee aan xoojin; sidaa darteed, inta badan waxyeelada magaalooyinka waxay u badan tahay inay ka timid dhulgariirka laftiisa. Mid khabiir ah ayaa ku dooday in dhismayaasha Seattle ay yihiin kuwo aan ku filnayn xitaa in ay ka hortagaan dhacdo la mid ah dhulgariirkii San Francisco ee 1906, iskaba daa mid ka sii xoog badan.  Kenneth Murphy, oo ah madaxa FEMA ee gobolka X, waaxda u qaabilsan Oregon, Washington, Idaho, iyo Alaska, wuxuu si aad ah u sheegay: "Waxaan u maleyneynaa in wax kasta oo galbeedka ka ah Interstate 5 ay noqon doonaan rooti".  Cilmibaadhisadii ugu danbeeyay waxay cadeeyeen in aaga Cascadia uu ka dhib badanyahay kana dabacsan yahay sidii hore loo maleeyay. Sanadkii 2010, khubarada cilmiga dhulka waxay saadaaliyeen 37% suurtagalnimada dhacdo M8.2 + 50 sano gudahood, iyo 10 ilaa 15% suurtagalnimada in dhammaan aagga hoos u dhaca Cascadia uu ku burburin doono dhacdo M9 + isla waqtigaas. Khubarada cilmiga dhulka waxay kaloo ogaadeen in waqooyi galbeed ee Baasifigga aysan diyaar u aheyn dhulgariir noocan oo kale ah. Tsunami-ga uu soo saaray wuxuu gaadhi karaa 80 ilaa 100 fuudh (24 ilaa 30 mitir).  Daraasad la sameeyay 2004 ayaa muujisay suurtagalnimada sare u kaca heerka badda ee celceliska (oo ay sababtay hoos u dhac) oo ku teedsan aagga hoos u dhaca Cascadia. Waxay soo jeedisay in magaalooyinka ku yaal xeebta galbeed ee Jasiiradda Vancouver, sida Tofino iyo Ucluelet, ay halis ugu jiraan hoos u dhac 1<unk>2 m ah, oo la xiriira celceliska heerka badda.
Khubarada cilmiga dhulka ayaa saadaalinaya 37% fursad ah dhulgariir cabirkiisu yahay 8.2 + oo ay sababtay hoos u dhaca saxanka Cascadia 38 sano ee soo socota, iyo 10% - 15% dhulgariir cabirkiisu yahay 9 + isla waqtigaas. Macluumaadkaan waxaa laga soo qaatay daraasad 2010 Xigasho: https://web.archive.org/web/20100527090117/http://oregonstate.edu/ua/ncs/node/13426