{"id":611,"date":"2024-03-26T11:53:48","date_gmt":"2024-03-26T02:53:48","guid":{"rendered":"https:\/\/www.pro-7.co.jp\/en\/\/?post_type=disaster-prevention&#038;p=611"},"modified":"2024-12-17T11:03:13","modified_gmt":"2024-12-17T02:03:13","slug":"long-periodearthquakegroundmotion","status":"publish","type":"disaster-prevention","link":"https:\/\/www.pro-7.co.jp\/en\/disaster-prevention\/long-periodearthquakegroundmotion\/","title":{"rendered":"Long-Period Seismic Motion"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"945\" height=\"945\" src=\"https:\/\/www.pro-7.co.jp\/en\/wp-content\/uploads\/2024\/03\/81f2ef18393eeebb0ea5e4d852b4301b.jpg\" alt=\"long-period seismic motion\" class=\"wp-image-2673\" srcset=\"https:\/\/www.pro-7.co.jp\/en\/wp-content\/uploads\/2024\/03\/81f2ef18393eeebb0ea5e4d852b4301b.jpg 945w, https:\/\/www.pro-7.co.jp\/en\/wp-content\/uploads\/2024\/03\/81f2ef18393eeebb0ea5e4d852b4301b-300x300.jpg 300w, https:\/\/www.pro-7.co.jp\/en\/wp-content\/uploads\/2024\/03\/81f2ef18393eeebb0ea5e4d852b4301b-150x150.jpg 150w, https:\/\/www.pro-7.co.jp\/en\/wp-content\/uploads\/2024\/03\/81f2ef18393eeebb0ea5e4d852b4301b-768x768.jpg 768w\" sizes=\"(max-width: 945px) 100vw, 945px\" \/><\/figure>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong>Answer\uff1aLong shaking that occurs during large earthquakes.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u25cfShakes tall buildings significantly for long periods of time.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u25cfCan be transmitted far away.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u25cfThe shaking may last for more than 10 minutes.\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u25cfLarge shaking may cause furniture to fall over or fall off.<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Large, long-period shaking even at distances of several hundred km from where the earthquake occurred<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Even if the earthquake intensity is small at a distance from the epicenter, the shaking can be large on the upper floors of a building.<\/strong><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img decoding=\"async\" width=\"945\" height=\"945\" src=\"https:\/\/www.pro-7.co.jp\/en\/wp-content\/uploads\/2024\/03\/88c1c6fa6ac396e01d4b245e6f253645.jpg\" alt=\"state of long period seismic motion\" class=\"wp-image-2674\" style=\"width:470px;height:auto\" srcset=\"https:\/\/www.pro-7.co.jp\/en\/wp-content\/uploads\/2024\/03\/88c1c6fa6ac396e01d4b245e6f253645.jpg 945w, https:\/\/www.pro-7.co.jp\/en\/wp-content\/uploads\/2024\/03\/88c1c6fa6ac396e01d4b245e6f253645-300x300.jpg 300w, https:\/\/www.pro-7.co.jp\/en\/wp-content\/uploads\/2024\/03\/88c1c6fa6ac396e01d4b245e6f253645-150x150.jpg 150w, https:\/\/www.pro-7.co.jp\/en\/wp-content\/uploads\/2024\/03\/88c1c6fa6ac396e01d4b245e6f253645-768x768.jpg 768w\" sizes=\"(max-width: 945px) 100vw, 945px\" \/><\/figure>\n<\/div><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Long-period seismic motion occurs, high-rise buildings may continue to shake significantly for a long period of time.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>This can cause major deformation of the building, and may cause furniture on upper floors to topple over or move so far that they collide with people.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>In fact, in the 2011 off the Pacific coast of Tohoku Earthquake, high-rise buildings in Tokyo (maximum intensity 5+) suffered falling ceilings, sprinkler failures and elevator failures.<\/strong><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" width=\"945\" height=\"945\" src=\"https:\/\/www.pro-7.co.jp\/en\/wp-content\/uploads\/2024\/03\/abad7541dedbdecc6b9fef6699be3cd8.jpg\" alt=\"Inside the building at Great East Japan Earthquake 2011\" class=\"wp-image-2675\" style=\"width:482px;height:auto\" srcset=\"https:\/\/www.pro-7.co.jp\/en\/wp-content\/uploads\/2024\/03\/abad7541dedbdecc6b9fef6699be3cd8.jpg 945w, https:\/\/www.pro-7.co.jp\/en\/wp-content\/uploads\/2024\/03\/abad7541dedbdecc6b9fef6699be3cd8-300x300.jpg 300w, https:\/\/www.pro-7.co.jp\/en\/wp-content\/uploads\/2024\/03\/abad7541dedbdecc6b9fef6699be3cd8-150x150.jpg 150w, https:\/\/www.pro-7.co.jp\/en\/wp-content\/uploads\/2024\/03\/abad7541dedbdecc6b9fef6699be3cd8-768x768.jpg 768w\" sizes=\"(max-width: 945px) 100vw, 945px\" \/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" width=\"945\" height=\"945\" src=\"https:\/\/www.pro-7.co.jp\/en\/wp-content\/uploads\/2024\/03\/7801467742beaee4f7adb7dc9927e161.jpg\" alt=\"\" class=\"wp-image-2676\" style=\"width:840px;height:auto\" srcset=\"https:\/\/www.pro-7.co.jp\/en\/wp-content\/uploads\/2024\/03\/7801467742beaee4f7adb7dc9927e161.jpg 945w, https:\/\/www.pro-7.co.jp\/en\/wp-content\/uploads\/2024\/03\/7801467742beaee4f7adb7dc9927e161-300x300.jpg 300w, https:\/\/www.pro-7.co.jp\/en\/wp-content\/uploads\/2024\/03\/7801467742beaee4f7adb7dc9927e161-150x150.jpg 150w, https:\/\/www.pro-7.co.jp\/en\/wp-content\/uploads\/2024\/03\/7801467742beaee4f7adb7dc9927e161-768x768.jpg 768w\" sizes=\"(max-width: 945px) 100vw, 945px\" \/><\/figure>\n","protected":false},"featured_media":761,"parent":0,"menu_order":0,"template":"","disaster-prevention_category":[65],"class_list":["post-611","disaster-prevention","type-disaster-prevention","status-publish","has-post-thumbnail","hentry","disaster-prevention_category-long-period-seismic-motion"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Answer\uff1aLong shaking that occurs during large earthquake\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/www.pro-7.co.jp\/en\/disaster-prevention\/long-periodearthquakegroundmotion\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\n\t\t<!-- Global site tag (gtag.js) - Google Analytics -->\n<script async src=\"https:\/\/www.googletagmanager.com\/gtag\/js?id=UA-126198492-1\"><\/script>\n<script>\n  window.dataLayer = window.dataLayer || [];\n  function 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