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NOISE MAPPING PROCESS Dr Bernadette McKell Hamilton & McGregor.

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Presentation on theme: "NOISE MAPPING PROCESS Dr Bernadette McKell Hamilton & McGregor."— Presentation transcript:

1 NOISE MAPPING PROCESS Dr Bernadette McKell Hamilton & McGregor

2 What We Have Mapped? Agglomerations over 250,000 inhabitants (including industry and ports) All major roads carrying more than 6 million vehicles a year; Major railways with over 60,000 rail passengers a year Major airports with over 50,000 movements per year.

3 What Have Mapped Within Agglomerations? Industry and ports All roads within agglomerations with flows of 1000 vehicles or more per day (the lower limit is equivalent to 0.35 million passages per annum). Every railway which is likely to produce noise levels of greater than 55 dB L den or 50 dB L night at 4m above ground level (therefore all railways).

4 Definitions L den : 24-hr L eq calculated for an annual period, weighted for nightand evening. L evening : The A-weighted long-term average sound level as defined in ISO : 1987, determined over all the evening (19:00 – 23:00) periods of a year L night : The A-weighted long-term average sound level as defined in ISO : 1987, determined over all the night (23:00 – 07:00) periods of a year

5 The logarithmic of L day L evening and L night including penalties for the night and evening periods

6 Noise Source Methodology RoadCRTN+TRL backend L A18(hr) to L den correction RailwaysCRN + correction to take account of rail/wheel roughness Airport.csv files (CAA for Glasgow, Edinburgh and Aberdeen and Bickerdike Allen for Prestwick) Industrial & Ports European Commission Working Group Assessment of Exposure to Noise (WG-AEN) GPG for Strategic Noise Mapping and the Production of Associated Data on Noise Exposure

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8 Qualifying Road Study Areas Copyright © Hamilton & McGregor Permission is granted for this material to be shared for non-commercial, educational purposes, provided that this copyright statement appears on the reproduced materials and notice is given that the copying is by permission of the author. To disseminate otherwise or to republish requires written permission from the author.

9 Overall Area Total Study Area (incl buffer = 4494 sq km) Inliers and Outliers Total area outside Agglomerations =3659 sq km Total road length outside Agglomeration = 1635 km Edinburgh Agglomeration Total area of Edinburgh Agglomeration: = 274 sq km Total length of road within Edinburgh Agglomeration =496 km Glasgow Agglomeration Total area of Glasgow Agglomeration =766 sq km Total length of road within Glasgow Agglomeration =1483 km Copyright © Hamilton & McGregor Permission is granted for this material to be shared for non-commercial, educational purposes, provided that this copyright statement appears on the reproduced materials and notice is given that the copying is by permission of the author. To disseminate otherwise or to republish requires written permission from the author.

10 Qualifying Railways Study Areas Copyright © Hamilton & McGregor Permission is granted for this material to be shared for non-commercial, educational purposes, provided that this copyright statement appears on the reproduced materials and notice is given that the copying is by permission of the author. To disseminate otherwise or to republish requires written permission from the author.

11 Edinburgh Agglomeration Total area of Edinburgh agglomeration = 274 sq km Total Length of Railway tracks within Agglomeration =163 km Glasgow Agglomeration Total area of Agglomeration = 766 sq km Total length of railway tracks within Agglomeration = 652 km Outliers and Inliers Total area of outside Agglomeration =: 422 sq km Total length of railway tracks outside Agglomeration = 205 km Copyright © Hamilton & McGregor Permission is granted for this material to be shared for non-commercial, educational purposes, provided that this copyright statement appears on the reproduced materials and notice is given that the copying is by permission of the author. To disseminate otherwise or to republish requires written permission from the author. Due to OS licence conditions, you/your agent may only use this map for official business dealings with the Scottish Government. If you wish to use the map for other uses, you must first obtain a separate licence from OS. © Crown copyright. All rights reserved Scottish Government

12 Ground modelling Primary Data Sources : OS Master Map Nextmap DTM, DSM LiDAR Data ITN Road Network Data, Process and Optimisation Copyright © Hamilton & McGregor Permission is granted for this material to be shared for non-commercial, educational purposes, provided that this copyright statement appears on the reproduced materials and notice is given that the copying is by permission of the author. To disseminate otherwise or to republish requires written permission from the author. Due to OS licence conditions, you/your agent may only use this map for official business dealings with the Scottish Government. If you wish to use the map for other uses, you must first obtain a separate licence from OS. © Crown copyright. All rights reserved Scottish Government

13 Main primary data source for the ground objects Copyright © Hamilton & McGregor Permission is granted for this material to be shared for non-commercial, educational purposes, provided that this copyright statement appears on the reproduced materials and notice is given that the copying is by permission of the author. To disseminate otherwise or to republish requires written permission from the author. Due to OS licence conditions, you/your agent may only use this map for official business dealings with the Scottish Government. If you wish to use the map for other uses, you must first obtain a separate licence from OS. © Crown copyright. All rights reserved Scottish Government

14 OS Data represents the real world accuracy Copyright © Hamilton & McGregor Permission is granted for this material to be shared for non-commercial, educational purposes, provided that this copyright statement appears on the reproduced materials and notice is given that the copying is by permission of the author. To disseminate otherwise or to republish requires written permission from the author. Due to OS licence conditions, you/your agent may only use this map for official business dealings with the Scottish Government. If you wish to use the map for other uses, you must first obtain a separate licence from OS. © Crown copyright. All rights reserved Scottish Government

15 2D Buildings are extracted from OS Master Map data Copyright © Hamilton & McGregor Permission is granted for this material to be shared for non-commercial, educational purposes, provided that this copyright statement appears on the reproduced materials and notice is given that the copying is by permission of the author. To disseminate otherwise or to republish requires written permission from the author. Due to OS licence conditions, you/your agent may only use this map for official business dealings with the Scottish Government. If you wish to use the map for other uses, you must first obtain a separate licence from OS. © Crown copyright. All rights reserved Scottish Government

16 Master Map with 2D Buildings ( Glasgow City Centre Area) Copyright © Hamilton & McGregor Permission is granted for this material to be shared for non-commercial, educational purposes, provided that this copyright statement appears on the reproduced materials and notice is given that the copying is by permission of the author. To disseminate otherwise or to republish requires written permission from the author. Due to OS licence conditions, you/your agent may only use this map for official business dealings with the Scottish Government. If you wish to use the map for other uses, you must first obtain a separate licence from OS. © Crown copyright. All rights reserved Scottish Government

17 3D Glasgow Urban Model Building height assigned from LiDAR data 1m LiDAR data source: Geoinformation group, UK Copyright © Hamilton & McGregor Permission is granted for this material to be shared for non-commercial, educational purposes, provided that this copyright statement appears on the reproduced materials and notice is given that the copying is by permission of the author. To disseminate otherwise or to republish requires written permission from the author. Due to OS licence conditions, you/your agent may only use this map for official business dealings with the Scottish Government. If you wish to use the map for other uses, you must first obtain a separate licence from OS. © Crown copyright. All rights reserved Scottish Government

18 Width Model Railway tracks are modelled according to constant width Road are modelled according to actual width Copyright © Hamilton & McGregor Permission is granted for this material to be shared for non-commercial, educational purposes, provided that this copyright statement appears on the reproduced materials and notice is given that the copying is by permission of the author. To disseminate otherwise or to republish requires written permission from the author. Due to OS licence conditions, you/your agent may only use this map for official business dealings with the Scottish Government. If you wish to use the map for other uses, you must first obtain a separate licence from OS. © Crown copyright. All rights reserved Scottish Government

19 NextMap DTM Advantages for Noise Mapping Better accuracy then contours Compatible with noise modelling software Problems Contains too many points Create problem in noise calculation in Larger area Heavy file size Data Required optimization Total number of points (pixels) in the City Centre Area: Copyright © Hamilton & McGregor Permission is granted for this material to be shared for non-commercial, educational purposes, provided that this copyright statement appears on the reproduced materials and notice is given that the copying is by permission of the author. To disseminate otherwise or to republish requires written permission from the author.

20 Total number of points are reduced from to ( 12 times reduction) File size reduced to 10MB to 2.5MB Total number of points (pixels) in the City Centre Area: Copyright © Hamilton & McGregor Permission is granted for this material to be shared for non-commercial, educational purposes, provided that this copyright statement appears on the reproduced materials and notice is given that the copying is by permission of the author. To disseminate otherwise or to republish requires written permission from the author.

21 Model Comparison 3D Ground model from original points 3D Ground model from optimised points Insignificant difference between models M2 is compatible, fast and accurate for noise modelling M1 M2 Copyright © Hamilton & McGregor Permission is granted for this material to be shared for non-commercial, educational purposes, provided that this copyright statement appears on the reproduced materials and notice is given that the copying is by permission of the author. To disseminate otherwise or to republish requires written permission from the author.

22 3D buildings ground model Building heights from 1m Lidar Ground Model from 5m NextMap Copyright © Hamilton & McGregor Permission is granted for this material to be shared for non-commercial, educational purposes, provided that this copyright statement appears on the reproduced materials and notice is given that the copying is by permission of the author. To disseminate otherwise or to republish requires written permission from the author. Due to OS licence conditions, you/your agent may only use this map for official business dealings with the Scottish Government. If you wish to use the map for other uses, you must first obtain a separate licence from OS. © Crown copyright. All rights reserved Scottish Government

23 3D Noise Map L den Glasgow City Centre Area Copyright © Hamilton & McGregor Permission is granted for this material to be shared for non-commercial, educational purposes, provided that this copyright statement appears on the reproduced materials and notice is given that the copying is by permission of the author. To disseminate otherwise or to republish requires written permission from the author. Due to OS licence conditions, you/your agent may only use this map for official business dealings with the Scottish Government. If you wish to use the map for other uses, you must first obtain a separate licence from OS. © Crown copyright. All rights reserved Scottish Government

24 Final Noise Map Copyright © Hamilton & McGregor Permission is granted for this material to be shared for non-commercial, educational purposes, provided that this copyright statement appears on the reproduced materials and notice is given that the copying is by permission of the author. To disseminate otherwise or to republish requires written permission from the author. Due to OS licence conditions, you/your agent may only use this map for official business dealings with the Scottish Government. If you wish to use the map for other uses, you must first obtain a separate licence from OS. © Crown copyright. All rights reserved Scottish Government

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