{"id":3222,"date":"2025-07-31T18:52:22","date_gmt":"2025-07-31T21:52:22","guid":{"rendered":"https:\/\/overticeportal.com.br\/?p=3222"},"modified":"2025-07-31T19:00:47","modified_gmt":"2025-07-31T22:00:47","slug":"por-que-um-terremoto-tao-forte-nao-produziu-um-tsunami-catastrofico","status":"publish","type":"post","link":"https:\/\/www.portalam9.com.br\/?p=3222","title":{"rendered":"Por que um terremoto t\u00e3o forte n\u00e3o produziu um tsunami catastr\u00f3fico?"},"content":{"rendered":"\n
O terremoto de magnitude 8,8 que atingiu o leste da R\u00fassia na noite desta ter\u00e7a-feira (29), madrugada de quarta (30) na Europa, foi considerado o sexto mais forte da era moderna. O tremor provocou tsunamis de at\u00e9 quatro metros de altura que atingiram a costa russa.<\/p>\n\n\n\n
Ondas menores foram registradas no Jap\u00e3o e no Hava\u00ed. Outros pa\u00edses, como Filipinas, Indon\u00e9sia e Chile chegaram a emitir alertas que foram descartados horas depois. Mas por que um abalo t\u00e3o forte n\u00e3o provocou tsunamis maiores?<\/p>\n\n\n\n
Abalos secund\u00e1rios foram registrados<\/h2>\n\n\n\n
\n
O epicentro do terremoto foi a cerca de 125 km a sudeste da cidade de Petropavlovsk-Kamchatsky, que possui 165 mil habitantes e est\u00e1 localizada na Ba\u00eda de Avancha, extremo leste russo.<\/li>\n\n\n\n
J\u00e1 a profundidade foi de 19,3 km.<\/li>\n\n\n\n
A regi\u00e3o possui cerca de 1,25 mil km de extens\u00e3o e fica entre o Oceano Pac\u00edfico e o Mar de Okhtosk.<\/li>\n\n\n\n
O tremor foi seguido de abalos secund\u00e1rios de 6,3 e 6,9 graus, respectivamente.<\/li>\n\n\n\n
O governador regional de Kamtchatka, Vladimir Solodov, confirmou que a infraestrutura local foi danificada e que dezenas de pessoas ficaram feridas.<\/li>\n\n\n\n
Apesar do tamanho do terremoto, ningu\u00e9m morreu.<\/li>\n<\/ul>\n\n\n\n
Diversos fatores influenciam no tamanho de um tsunami<\/h2>\n\n\n\n
Outro efeito causado pelo poderoso terremoto foram tsunamis que alcan\u00e7aram diversas regi\u00f5es do Oceano Pac\u00edfico. Logo ap\u00f3s a confirma\u00e7\u00e3o do tremor, havia uma preocupa\u00e7\u00e3o global de que ondas gigantescas pudessem ser formadas, o que n\u00e3o ocorreu.<\/p>\n\n\n\n
Em entrevista ao The New York Times<\/em>, Diego Melgar, geof\u00edsico da Universidade de Oregon, nos Estados Unidos, explicou que isso tem a ver com o tamanho do abalo s\u00edsmico. Apesar de ter sido muito forte, a ocorr\u00eancia na R\u00fassia ainda ficou abaixo dos terremotos na Indon\u00e9sia, em 2004, e do Jap\u00e3o, em 2011, que resultaram na forma\u00e7\u00e3o de ondas gigantescas.<\/p>\n\n\n\n\nOndas n\u00e3o foram t\u00e3o grandes quanto as que atingiram a Indon\u00e9sia, em 2004, e o Jap\u00e3o, em 2011 (Imagem: Mimadea\/Shutterstock)<\/figcaption><\/figure>\n<\/figure>\n\n\n\n
\n
“Isso ocorre porque a escala de terremotos \u00e9 logar\u00edtmica: um evento de magnitude 9 possui cerca de 10 vezes mais energia do que um evento de magnitude 8,7 e cerca de tr\u00eas vezes mais energia do que um evento de magnitude 8,8. N\u00e3o me interpretem mal, ainda \u00e9 enorme. Mas aqueles em 2004 e 2011 eram gigantes.”<\/em><\/p>\n\n\n\n
Diego Melgar, geof\u00edsico da Universidade de Oregon<\/p>\n<\/blockquote>\n\n\n\n
O especialista ainda afirmou que a profundidade do tremor e como a energia liberada se movimenta ao longo das placas tect\u00f4nicas influencia no tamanho do tsunami gerado. Estes detalhes ainda n\u00e3o est\u00e3o muito claros, mas tamb\u00e9m podem ter influenciado para a forma\u00e7\u00e3o de ondas \u201cmenores\u201d.<\/p>\n\n\n\n
Fonte: Olhar Digital Cr\u00e9ditos: FOTOKITA \/ iStock<\/em><\/p>\n\n\n\n
Apesar do terremoto na R\u00fassia ter sido o sexto mais potente j\u00e1 registrado, as ondas geradas tiveram ‘apenas’ quatro metros de altura \nCr\u00e9ditos: FOTOKITA \/ iStock<\/p>\n","protected":false},"author":3,"featured_media":3223,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[35],"tags":[39],"class_list":["post-3222","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mundo","tag-destaque"],"yoast_head":"\n
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