Giovanni Salini

Prof. Giovanni Salini

Universidad Catolica de la Santisima Concepcion
orcid

Research Focus & Metrics

Academic Career Length

34Years (1993-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 November 2008 in Atmospheric Environment
Verified
Journal Article
Closed access
PPPatricio Perez
Patricio Perez
GSGiovanni Salini
Giovanni Salini

1 January 2015 in Aerosol and Air Quality Research
Verified
Journal Article
Closed access
GSGiovanni Salini
Giovanni Salini
PPPatricio Pérez
Patricio Pérez

1 March 2022 in Sustainability
Verified
Journal Article
Open access
PDF file
Patricio Reinaldo PachecoPatricio Reinaldo Pacheco
Patricio Reinaldo Pacheco
Eduardo MeraEduardo Mera
Eduardo Mera
GSGiovanni Salini
Giovanni Salini
The concentration distribution of anthropocentric pollutants is favored by urban densification, affecting the micrometeorology in big cities. To examine this condition, chaos theory was applied to time series of measurements of urban meteorology and pollutants of six communes of the Metropolitan Region of Santiago de Chile, in two periods: 2010–2013 and 2017–2020. Each commune contributes, per period, six different time series: three for the meteorological variables (temperature, relative humidity, and magnitude wind speed) and three for the atmospheric pollutant concentrations (PM10, PM2.5, and CO). This qualitative study corroborates that each of the time series is chaotic through the calculation of chaotic parameters: Lyapunov exponent, correlation dimension, Hurst coefficient, correlation entropy, Lempel–Ziv complexity and fractal dimension. The variation in the chaotic parameters between the two periods can be interpreted in relation to the roughness change due to urban densification. More specific parameters, constructed from the Kolmogorov entropies and the fractal dimensions of the time series, show modifications due to the increase in the built surface in the most current period. This variation also extends to micrometeorology, as is clear from the Lempel–Ziv complexity and the Hurst coefficient. The qualitative picture constructed using chaos theory reveals that human interaction with nature affects diversity and sustainability and generates irreversible processes.

1 August 2017 in Revista Internacional de Contaminación Ambiental
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Journal Article
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GSGiovanni Salini
Giovanni Salini
UCUniversidad Católica de la Santísima Concepción
Universidad Católica de la Santísima Concepción
EMEvelin Jhovana Medina Mitma
Evelin Jhovana Medina Mitma
USUniversidad Mayor de San Simón
Universidad Mayor de San Simón
ESTUDIO SOBRE LA DINÁMICA TEMPORAL DE MATERIAL PARTICULADO PM10 EMITIDO EN COCHABAMBA, BOLIVIA

1 December 2020 in Información tecnológica
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Journal Article
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Patricio Reinaldo PachecoPatricio Reinaldo Pacheco
Patricio Reinaldo Pacheco
MPMaría C. Parodi
María C. Parodi
Eduardo MeraEduardo Mera
Eduardo Mera
GSGiovanni Salini
Giovanni Salini
El objetivo de esta investigación es contrastar un modelo Gaussiano de dispersión de contaminantes, usando la rosa de los vientos de la ciudad de Andacollo (Chile), con un modelo cuya génesis está en la teoría del caos y que emplea datos crudos de carácter público de mediciones de la estación Andacollo del Sistema de Información Nacional de Calidad del Aire (SINCA) de Chile. Los datos conforman series de tiempo de material particulado, temperatura, humedad relativa, presión, radiación solar y magnitud de la velocidad del viento. El tratamiento caótico de cada serie entrega su exponente de Lyapunov, su coeficiente de Hurst y su entropía de correlación. La aproximación caótica muestra que las entropías de las variables meteorológicas actúan sobre la del contaminante provocando su decaimiento asintótico según perdida de persistencia, explicando sus interacciones térmicas localizadas. Se concluye que los modelos exhiben predicciones similares al comparar el decaimiento del contaminante PM10.