Bosai Solution ID : JBP00081

MEISEI

Earthquake Observation Systems

This system observes earthquakes in various facilities in cities and provides
information that serves as a standard for disaster response and disasterprevention measures.

HazardEarthquake Volcano

Solution Purpose
Prevention & Mitigation Preparedness Response＜ Downloaded from www.bosai-jp.org ＞

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Solution Theme
Risk Assessment Disaster Prevention Plan Infrastructure Technology Building Technology Information &Communication Technology Products & Goods

Technology Subject
Risk Monitoring Legislation & Technical Regulations Business Continuity Plan River & Basin Dam &Reservoir Road Railways Airport Port Essential Utilities Urban Emergency Base & Back-up Facility
Mitigation Measures for Interior & Facility Information Gathering Information Analysis & Judgement
Information Communication Machinery & Equipment

Advantages
Seismographs detect when an earthquake occurs and the tremor reaches the observation point. The
shaking can also be predicted by the Earthquake Early Warning provided by the Japan MeteorologicalAgency. The control seismometer outputs the real-time seismic intensity 0.3 seconds after the P-wave
arrives. The measuring seismic intensity meter accurately outputs the seismic intensity, an important
indicator for estimating the scale of damage, in approximately 1 minute. Seismometers are also used toobserve long-period seismic motions, which can cause serious damage to high-rise buildings.
Meisei Electric can provide seismometers of various time phases based on its long experience, and canalso build a system to integrate and manage them.

Solution Illustrated
Earthquake countermeasures can be taken quickly and damage can be minimized by observing eachstage of the time series from the occurrence of an earthquake to the end of the shaking withappropriate equipment.

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Background
In Japan,the 1995 Southern Hyogo Prefecture Earthquake delayed initial disaster relief efforts andresulted in the loss of many lives because it took time to ascertain the scale of damage and location due
to the disruption of ground communication networks. Therefore, information on seismic intensity wasconsolidated to the Japan Meteorological Agency via prefectural governments within one minute, andimmediately communicated to all citizens through disaster prevention organizations such as firedepartments, police departments, and Self-Defense Forces, as well as mass media, and the damage
assumption system of the Cabinet Office was automatically activated to establish a disaster rescue
system, preventing the "72 hours of life" from being wasted. This information is positioned as the mostimportant information to avoid wasting "72 hours of life.
While magnitude is an indicator of seismic energy, measured seismic intensity is an indicator of thestrength of ground shaking and has a strong correlation with the rate of damage to people and buildings.
In the past, before scientific observation of earthquakes began, seismic intensity was estimated fromancient documents describing the tremors felt by people, and the epicenter and scale of the earthquake
were estimated. Information on seismic intensity is therefore important to prepare for future earthquake
disasters.
Measured seismic intensity, calculated from seismograph observations, is objective, unambiguous, andcan be used as an official record.
The seismic intensity observation network is the most important earthquake disaster prevention systemthat should first be deployed at each facility in earthquake-prone areas.

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3/5Exposition of the Solution
Networks for earthquake disasters, which are infrequent disasters, require remote monitoring andinformation gathering capabilities for long-term stable operation.

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Achievements of Examples
In addition to the accelerometer, the seismometer needs a processor that calculates and outputs theseismic intensity and a time calibration function.

Other References

https://www.meisei.co.jp/english/products/products_category/seismol
ogy

Corporate Profile
Meisei Electric Co., Ltd.
Toyosu IHI bldg. 10F, 3-1-1 Toyosu, Koto-ku, Tokyo, 135-8115, Japan Tel. : +81-3-6204-8254
 E-mail : product_eng@meisei.co.jp
 Website : http://www.meisei.co.jp/english/＜ Downloaded from www.bosai-jp.org ＞

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