Woo, Sang-Hee Kim, Jong Bum Bae, Gwi-Nam Hwang, Moon Se Tahk, Gil Hun Yoon, Hwa Hyun Yook, Se-Jin 2024-01-19T22:01:50Z 2024-01-19T22:01:50Z 2021-09-03 2018-09 1680-8584 https://pubs.kist.re.kr/handle/201004/120985 To protect the health of subway users, it is essential to investigate the generation, resuspension, and decay of particles in underground tunnels. In this paper, we analyzed the diurnal pattern of variation in particle concentration in a subway tunnel. The mass concentration of particles was measured in a shelter located midway in the underground tunnel connecting Janghanpyeong station and Gunja station on Seoul Subway Line 5 by using an aerodynamic particle sizer, a dust monitor, and a fast mobility particle sizer. The particle mass concentration increased uniformly as a train passed through the tunnel, which was followed by an exponential decay. The particle concentration in the tunnel decreased when the decrease in the number of particles between train operations exceeded the number of particles generated and resuspended by a passing train, and increased in the opposite case. The diurnal variation in particle concentration in the tunnel according to train operations can be predicted by applying such a pattern of variation to the mass concentration of particles. English TAIWAN ASSOC AEROSOL RES-TAAR PUBLIC TRANSPORTATION MODES LONG-TERM EXPOSURE PARTICULATE MATTER AEROSOL-PARTICLES SUSPENDED PARTICULATE PM2.5 AIRBORNE SEOUL DUST PM10 Investigation of Diurnal Pattern of Generation and Resuspension of Particles Induced by Moving Subway Trains in an Underground Tunnel Article 10.4209/aaqr.2017.11.0444 1 AEROSOL AND AIR QUALITY RESEARCH, v.18, no.9, pp.2240 - 2252 AEROSOL AND AIR QUALITY RESEARCH 18 9 2240 2252 scie scopus 000441578000010 2-s2.0-85055513918 Environmental Sciences Environmental Sciences & Ecology Article PUBLIC TRANSPORTATION MODES LONG-TERM EXPOSURE PARTICULATE MATTER AEROSOL-PARTICLES SUSPENDED PARTICULATE PM2.5 AIRBORNE SEOUL DUST PM10 Aerosol Particle concentration Subway Underground tunnel Train operation