ICPS 2003, Odense - Denmark. Light Pollution Analysis of the Istrian Peninsula. Ivica Crljenica, University of Zagreb. Light Pollution is all the light that doesn’t illumiates what it should. It is mainly produced by improper public lightning. Light Pollution examples in the world…. - PowerPoint PPT Presentation
Transcript of Light Pollution Analysis of the Istrian Peninsula
Light Pollution Analysis of the Istrian Peninsula
Light Pollution Analysis of the Istrian Peninsula
Ivica Crljenica, University of Zagreb
ICPS 2003, Odense - Denmark
Light Pollution is all the light that doesn’t
illumiates what it should
It is mainly produced by improper public lightning
Zagreb, 11:54 PM
Los Angeles, 00:26 AM
Light Pollution examples in the
world…
…and in our country
Light pollution in Europe in 1997…
…and the prevision for 2025.
Measurement setup
• Increased mobility• Larger analysis area – app 200 km2/night
CCD camera
- 250 s exposition
GPS device
Data Aquisition
Raw Data
Image processing
Data Analysis
Data interpolation
Analysied area
app 900km2
2003.2002.
Comparison with last year’s results
Difference:
3D view of all measurements
2003.2002.
Difference:
Sky Glow decrement by radius
city boundary
Model of Sky Glow propagation
Propagation model:I=I0/rq
r < 1km q=0.020±0.007 Rq=35%
r > 1km q=0.57±0.05 Rq=8.77%
Population distribution
Sky Glow – Population dependancy
Sky Glow distribution
Sky Glow Local Monitoring group website:www.fizika.org/sglm
Ivica Crljenica, University of Zagrebicrljen@fizika.org