{"id":3897,"date":"2022-03-17T12:13:40","date_gmt":"2022-03-17T04:13:40","guid":{"rendered":"https:\/\/www.weather.org.hk\/blog\/?p=3897"},"modified":"2022-03-23T13:03:14","modified_gmt":"2022-03-23T05:03:14","slug":"%e6%97%a5%e6%9c%ac%e7%9a%84%e5%9c%b0%e9%9c%87%e6%98%af%e5%a6%82%e4%bd%95%e9%a0%90%e6%b8%ac%e7%9a%84%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.weather.org.hk\/news\/%e6%97%a5%e6%9c%ac%e7%9a%84%e5%9c%b0%e9%9c%87%e6%98%af%e5%a6%82%e4%bd%95%e9%a0%90%e6%b8%ac%e7%9a%84%ef%bc%9f\/","title":{"rendered":"\u65e5\u672c\u7684\u5730\u9707\u662f\u5982\u4f55\u9810\u6e2c\u7684\uff1f"},"content":{"rendered":"\n

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\uff08\u7ffb\u8b6f\u53ca\u6539\u5beb\u81ea\u539f\u6587\uff1ahttps:\/\/www.onosokki.co.jp\/English\/hp_e\/patio\/seismicwave.htm<\/a>\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"

兒子：日本的地震預警是在地震之前廣播的，他們如何預測？ 爸爸：你聽說過地震波的P波和S波嗎？ 兒子：P 波和 S 波？ 爸爸：P和S代表初級波和次級波。 兒子：這是否意味著地震波中有不同的速度波？ 爸爸：是的。他們利用最先到達的 P 波信息來預測 S 波的大小和到達時間，然後發出地震預警。 兒子：那是不是意味著S波比P波更大？ 爸爸：是的。在地殼中，P 波的傳播速度約為 6.5 公里\/秒，而 S 波的傳播速度約為 3.5 公里\/秒。 兒子：速度差幾乎是兩倍。從這張圖可以看出，P 波和 S 波具有不同的形狀。 爸爸：是的。速度不同的原因是，雖然波行進方向相同，但波的振動方向不同。 P波被稱為壓縮波，它在行進時重複壓縮和擴張… 兒子：這和聲音在空氣中傳遞是一樣的。 爸爸：是的。聲波在壓縮和擴張空氣的同時傳播。也就是所謂的縱波。…<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[46],"tags":[],"class_list":["post-3897","post","type-post","status-publish","format-standard","hentry","category-46"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.weather.org.hk\/news\/wp-json\/wp\/v2\/posts\/3897","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.weather.org.hk\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.weather.org.hk\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.weather.org.hk\/news\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.weather.org.hk\/news\/wp-json\/wp\/v2\/comments?post=3897"}],"version-history":[{"count":9,"href":"https:\/\/www.weather.org.hk\/news\/wp-json\/wp\/v2\/posts\/3897\/revisions"}],"predecessor-version":[{"id":3913,"href":"https:\/\/www.weather.org.hk\/news\/wp-json\/wp\/v2\/posts\/3897\/revisions\/3913"}],"wp:attachment":[{"href":"https:\/\/www.weather.org.hk\/news\/wp-json\/wp\/v2\/media?parent=3897"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.weather.org.hk\/news\/wp-json\/wp\/v2\/categories?post=3897"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.weather.org.hk\/news\/wp-json\/wp\/v2\/tags?post=3897"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}