Fig. 4From: Forecasts of future scenarios for airport noise based on collection and processing of web dataMap of predicted variations in LDEN at Heathrow Airport from 2018 to 2025 due to fleet substitution (ΔdB = LDEN,2025 – LDEN,2018). 50-dB and 55-dB LDEN contour lines computed for 2018 are superimposedBack to article page