Hlala endaweni yase Seattle isikhathi eside futhi uzothola ukuzamazama komhlaba. Ukuzamazama komhlaba okukhulu eNyakatho-ntshonalanga kuncane. Abanye angeke uzizwe ngisho. Eminye, njenge-Earthquake ye-Nisqually 2001, inkulu ngokwanele ukuzizwa nokudala umonakalo othile. Kodwa ungenzi iphutha-indawo ye- Seattle-Tacoma inamandla okuba nezinkinga ezinkulu nezonakalisayo!
Umzila we-Puget Sound uhlwanyelwe imigqa yamaphutha kanye nezindawo futhi kutholakala eduze neCascadia Subduction Zone, lapho iJuan de Fuca namaTectonic North America ehlangana khona.
Ngokombuso waseWashington uMnyango wezeMvelo, ukuzamazama komhlaba okungaphezu kwenkulungwane ku-Washington kusho ngonyaka! Ukuhlala endaweni enomzimba osebenzayo, akusiyo indaba yokuthi iT Seattle inokuzamazama komhlaba okukhulu , kodwa nini.
Izinhlobo zokuzamazama komhlaba ku-Puget Sound
Kuye ngokuthi ukuzamazama komhlaba okujulile nokuthi uhlobo lwephutha lwenzeka kanjani, ukuzamazama komhlaba kungaba okuncane noma okuyinhloko, eduze nomhlaba noma okujulile ngaphakathi komhlaba. I-Puget Sound inokukwazi ukuzwa izinhlobo ezintathu zokuzamazama komhlaba okungafani: okungajulile, okujulile kanye nokwehlisa. Ukuzamazama komhlaba okungajulile futhi okujulile yilokho okuzwakalayo njengokuzamazama komhlaba okungazungezeki okwenzeka phakathi kuka-0 no-30 km ukusuka phezulu; ukuzamazama komhlaba okujulile kwenzeka phakathi kuka-35 no-70 km ukusuka phezulu.
Ukuzamazama komhlaba okusetshenziselwa ukuzamazama komhlaba esifundeni sethu kwenzeka endaweni yeCascadia Subduction Zone ephuma eWashington Coast. Ukuqothulwa kwesikhwama lapho ipuleti eyodwa ihamba ngaphansi kwelinye ipuleti futhi lezi yiziqubuzana ikakhulukazi ezinesibopho se-tsunami namagxolo amakhulu.
Izindawo ezincane (kufaka phakathi iCascadia) ziyakwazi ukukhiqiza lokho okubizwa ngokuthi ukuzamazama komhlaba kwe-megathrust, okunamandla kakhulu futhi okulimazayo uma kwenzeka endaweni enabantu abaningi. Ukuzamazama komhlaba kuka-Tohoku ka-2011 eJapane kwenzeke endaweni ye-subduction efana ne-Cascadia Subduction Zone.
Umlando we-Seattle wokuzamazama komhlaba
Indawo ye-Puget Sound ivame ukungaphansi kokuzamazama komhlaba okuncane abantu abaningi abangazizwayo futhi akubangeli umonakalo.
Eminyakeni eyikhulu embalwa edlule, ukuzamazama komhlaba okumbalwa kwenze umlando wezimbungulu zabo eziphakeme kanye nemonakalo eshiye ekuvukeni kwawo.
NgoFebruwari 28, 2001: Ukuzamazama komhlaba kweNisqually, ngo-6.8 ubukhulu, bekuseNingizimu enyakatho, kepha kwaholela ekutheni kube khona ukulimala okwakhiwa eSttletle.
Ngo-Ephreli 29, 1965: Ukuzamazama komhlaba okungama-6.5, ukuzamazama komhlaba okukhulu eningizimu ye-Sound Sound kwazizwa kude kakhulu njengeMontana naseBrithani Columbia, futhi kwaqothula izinkulungwane zama-chimney ePuget Sound.
Ngo-Ephreli 13, 1949: Ukuzamazama komhlaba okungu-7.0 kwakuseduze ne-Olympia futhi kwaholela ekufeni kwabantu abangu-8, umonakalo omkhulu wempahla e-Olympia, ne-mudslide enkulu eTacoma.
NgoFebruwari 14, 1946: Ukuzamazama komhlaba okuyi-6.3, ukuzamazama komhlaba okujulile kwavunguza kakhulu iPuget Sound futhi kwabangela ukulimala okukhulu eSattle.
NgoJuni 23, 1946: Ukuzamazama komhlaba okungama-7.3 ubukhulu eStrait of Georgia futhi kwadala umonakalo eSttletle. Ukuzamazama komhlaba kwavela eBellingham kuya e-Olympia.
1872: Ephakathi kwaseLake Chelan , lokhu kulinganiselwa ukuthi ukuzamazama komhlaba kuye kwaba mkhulu, kodwa kwakukhona izakhiwo ezimbalwa ezenziwe ngabantu. Imibiko eminingi isebenza ngamapayipi omhlaba kanye nama-fissures emhlabathini.
NgoJanuwari 26, 1700: Ukuzamazama komhlaba okwasekupheleni kwe-megathrust eduze kwaseSeattle kwaba ngo-1700. Ubufakazi be-tsunami enkulu (okungenzeka ukuthi yashaya iJapane) nokubhujiswa kwamahlathi kusiza ososayensi ukuba bavele kulokhu kuzamazama.
Eminyakeni ye-900 AD: Kulinganiselwa ukuthi ukuzamazama komhlaba okungu-7.4 ku-Seattle endaweni engaba ngu-900. Izindabakwane zasekhaya kanye ne-geology zisiza ukuqinisekisa lokhu kuzamazama komhlaba.