Earthquake Current Affairs - 2020

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GoI launches “Seismic Hazard Microzonation” to minimize earthquake disasters

The Ministry of Earth Science has launched Seismic Hazard Microzonation project in major cities of India. The project aims to reduce hazards of seismic activities by putting in adequate measures

What is Seismic Hazard Microzonation?

It is the process of dividing earth quake prone areas based on certain factors. The factors include geological and geophysical characteristics of sites. They are ground shaking, landslide, liquefaction susceptibility, rock fall hazard and flooding caused due to earth quakes. Based on the division, mitigation measures are prepared. Hence, it is a preventive method to minimise the losses.

The factors in the microzonation method are estimated based on response from soil layers.

Microzonation in India

So far, the mapping has been done in the State of Sikkim and in other eight cities. The cities are Delhi, Bengaluru, Kolkata, Guwahati, Jabalpur, Dehra Dun, Ahmedabad and Gandhidham.

Japan

Japan is the best example where microzonation techniques are well implemented. The Civil engineering practice in Japan is based on microzonation laws. This helps to design infrastructure with seismic resilience.

Need

The technique gives better mitigatory measures as it helps to understand the impact of seismic activities precisely. In certain places, where no reliable prediction model can be implemented, it is essential to adopt preventive measures.

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Government launches India Quake app for earthquake parameter dissemination

The Union Ministry of Earth Science has launched India Quake application on the occasion of its foundation day.

The mobile app has been developed by the National Centre for Seismology (NCS) for automatic dissemination of earthquake parameter (location, time and magnitude) after the occurrence of earthquakes

Key Features of India Quake app

The App facilitates information dissemination faster with no restrictions on the number of recipients. It will provide real time earthquake location information on mobile of the user. It also will help in reducing panic amongst people during an earthquake.

The app will notify two categories of events scrutinized and unscrutinized. Unscrutinized earthquake events are those whose parameters have been estimated automatically by the software using the incoming waveform data from remote stations. In the case of scrutinized events category, the unscrutinized will be scrutinized and confirmed by the NCS.

Background

The National Centre for Seismology (NCS) under the Ministry of Earth Science operates national seismological network with 84 stations. These stations are connected to NCS headquarter for real time data communication through VSAT.

In case of an earthquake, NCS locate these stations using data from its network and disseminate earthquake parameters to all concerned government departments and other stake holders through email, SMS and fax.  However this causes some delay in dissemination and also restricts the number of recipients.  India Quake app will overcome this problem.

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