日本長(zhǎng)周期地震動(dòng)業(yè)務(wù)體系概述

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關(guān)鍵詞日本氣象廳；長(zhǎng)周期地震動(dòng)；長(zhǎng)周期地震動(dòng)預(yù)報(bào)；長(zhǎng)周期地震動(dòng)觀測(cè)中圖分類(lèi)號(hào)：P315 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：2096-7780（2025）05-0267-12doi：10.19987/j.dzkxjz.2024-045

AbstractLong-period ground motion （LPGM） can result in prolonged vibration and even damage or colapse of structures and infrastructure withlong naturalvibration periods.With theemergenceofflexible structures suchas highrise buildings and large oil tanks inour country，there is anurgent need to efectively mitigate LPGM-related damage. However，the national intensity rapid reporting and early warning project currently does not include early warning or related nformation dissemination forLPGM.This paper introduces in detail the development ofJapan'sLPGM business system，ncldingtheiitialproposal，systemcostruction，anditscontiuousimprovement.Itdesribeskeytchologies involved inthedevelopmentofthis system，suchas theclassficationofLPGMandthe establishmentofLPGMprediction technology.The paper also summarizes the application of the LPGM business system and the research and development of supporting disaster reduction facilities.Finally，basedon Japan’sexperience inconstructing a long-periodground motionservice system“Observe business first，then develop predictive technologies，and finally implement predictive services”，some suggestions are proposed for the future construction of China’s long-period ground motion service system.

KeywordsJapan Meteorological Agency; long-period ground motion; long-period ground motion prediction; longperiod ground motion observation

0 引言

在地震工程研究領(lǐng)域，長(zhǎng)周期地震動(dòng)一般指卓越周期為2s及以上的地震動(dòng)，卓越周期上限大于工程關(guān)心長(zhǎng)周期結(jié)構(gòu)的基階自振周期。（剩余14579字）