Development of Seismic Intensity Maps Using Low-Cost Micro-Electro-Mechanical Systems Seismic Network

Abstract

The Korea Meteorological Administration (KMA), SK Telecom, and Kyungpook National University collaborated to develop the low-cost IoT seismometer (LCIS) that embeds a micro-electromechanical systems accelerometer and LTE communication sensor. Currently, approximately 7,000 stations (the average density is 0.07/km 2 ) with LCIS devices are operating in real-time on the Korean Peninsula, which is about 25 times higher density than the national seismic network with high performance seismometers operated by KMA. The majority of LCISs are installed inside buildings so that adjustment is applied to convert to the free-surface equivalent vibration. Researchers derived seismic intensity maps using only LCIS network data, which showed very similar distributions to the maps from the high-performance network. This validates the usefulness of the LCIS network for Modified Mercalli intensity (MMI) map generation and earthquake early warning system.

Design for Optimized Public Safety and Earthquake Disaster Mitigation With IoT

“…IoT's capacity to interconnect a variety of sensors and devices in real-time enables the prompt gathering and analysis of crucial data, thereby facilitating more informed and faster decision-making [19,20]. An example of such advancement is the use of smartphones and IoT devices for rapid and extensive earthquake detection, providing both detection and alarm capabilities [21][22][23][24][25]. Nevertheless, there is room for further improvement in this technology, going beyond basic detection and warning.…”

Characterizing Smartphone Capabilities for Seismic and Structural Monitoring

“…Moreover, given the widespread use of smartphones with increased computational capabilities, together with future wireless 5G-6G connectivity, an unprecedented opportunity for real-time environmental and structural monitoring towards timely alert generation to ensure public safety, is today conceivable [16][17][18][19] . As a result, nowadays new smartphone applications towards this end are being developed [20][21][22][23][24] , improving the overall coverage and accuracy of earthquake detection and characterization.…”