Extreme value statistics for river quality simulations.
Water Sci Technol
; 61(2): 397-406, 2010.
Article
in En
| MEDLINE
| ID: mdl-20107266
ABSTRACT
Various methods have been proposed to assess intermittent pollution loads and impacts on rivers in urban areas. Although the variables to describe the impact are mainly the same, the standards show significant differences in the assessment of permitted concentration level, duration and return period. The probability of an event is derived using either frequencies of occurrence or predefined extreme value distributions. Both methods have drawbacks. To bypass these, an a posteriori estimation of the statistical distribution of data based on the peak-over-threshold method is proposed. The method is exemplarily demonstrated using a semi-virtual case study.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Water Pollution, Chemical
/
Computer Simulation
/
Models, Statistical
/
Rivers
Type of study:
Prognostic_studies
/
Risk_factors_studies
Language:
En
Journal:
Water Sci Technol
Journal subject:
SAUDE AMBIENTAL
/
TOXICOLOGIA
Year:
2010
Document type:
Article
Affiliation country:
Alemania