Transcript Dr. Bernadette McKell - Scottish Noise Mapping

NOISE MAPPING PROCESS
Dr Bernadette McKell
Hamilton & McGregor
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.
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 Lden or 50 dB Lnight at
4m above ground level (therefore all railways).
Definitions
Lden :
24-hr Leq calculated for an annual period,
weighted for nightand evening.
Levening :The A-weighted long-term average sound level as
defined in ISO 1996- 2: 1987, determined over all the
evening (19:00 – 23:00) periods of a year
Lnight : The A-weighted long-term average sound level as
defined in ISO 1996- 2: 1987, determined over all
the night (23:00 – 07:00) periods of a year
The logarithmic of Lday Levening and Lnight including penalties for the night and
evening periods
Lden
Lday
Levening 5
Lnight 10
 1 

 10* log10  12*10 10  4 *10 10  8 *10 10  dB

 24 

 
Noise
Source
Methodology
Road
CRTN+TRL backend LA18(hr) to Lden correction
Railways
CRN + 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
Qualifying Road Study Areas
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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.
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 2007. 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.
Qualifying Railways Study Areas
Copyright © Hamilton & McGregor 2007. 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.
Edinburgh Agglomeration
Total area of Edinburgh agglomeration = 274 sq km
Total Length of Railway tracks within Agglomeration
=163 km
Outliers and Inliers
Total area of outside Agglomeration =: 422 sq km
Total length of railway tracks outside Agglomeration = 205 km
Glasgow Agglomeration
Total area of Agglomeration = 766 sq km
Total length of railway tracks within Agglomeration =
652 km
Copyright © Hamilton & McGregor 2007. 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 100020540 2007.
Ground modelling
Data, Process and Optimisation
Primary Data Sources :
•OS Master Map
•Nextmap DTM, DSM
•LiDAR Data
•ITN Road Network
Copyright © Hamilton & McGregor 2007. 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 100020540 2007.
Main primary data source for the ground objects
Copyright © Hamilton & McGregor 2007. 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 100020540 2007.
OS Data represents the real world accuracy
Copyright © Hamilton & McGregor 2007. 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 100020540 2007.
2D Buildings are extracted from OS Master Map data
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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 100020540 2007.
Master Map with 2D Buildings ( Glasgow City Centre Area)
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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 100020540 2007.
3D Glasgow Urban Model
Building height assigned from LiDAR data
1m LiDAR data source: Geoinformation group, UK
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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 100020540 2007.
Width Model
Railway tracks are modelled
according to constant width
Road are modelled
according to actual width
Copyright © Hamilton & McGregor 2007. 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 100020540 2007.
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: 145994
Copyright © Hamilton & McGregor 2007. 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.
Total number of points (pixels)
in the City Centre Area: 11682
•Total number of points are reduced
from 145994 to 11682 ( 12 times
reduction)
•File size reduced to 10MB to 2.5MB
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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.
3D Ground model from
original points
M1
Model Comparison
3D Ground model from
optimised points
M2
Insignificant difference between models M2 is compatible, fast and accurate for noise
modelling
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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.
3D buildings ground model
•Building heights from 1m Lidar
•Ground Model from 5m NextMap
Copyright © Hamilton & McGregor 2007. 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 100020540 2007.
3D Noise Map Lden Glasgow City Centre Area
Copyright © Hamilton & McGregor 2007. 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 100020540 2007.
Final Noise Map
Copyright © Hamilton & McGregor 2007. 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
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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 100020540 2007.
http://www.scotland.gov.uk/Publications/2007/08/24141743/0