GLORIA

GEOMAR Library Ocean Research Information Access

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • 1
    Publication Date: 2021-05-19
    Description: El objetivo de este informe, es simular la circulación marina y las descargas hipotéticas en la bahía del Callao, teniendo en cuenta las variaciones estacionales climatológicas y considerando la dirección e intensidad de los forzantes de viento. Se usó el modelo ROMS (Regional Oceanic Model System) con la herramienta de anidamiento AGRIF (Adaptive Grid Refinement in Fortran). Se usó una batimetría híbrida calculada a partir de las bases de datos de ETOPO2, GEBCO, DHN e IMARPE; vientos de MWF-Quikscat, mareas de TPXO6.2, condiciones iniciales de WOA, condiciones de frontera de COADS, e información de ríos, calidad acuática y efluentes domésticos. El modelo representó adecuadamente los patrones de temperatura, salinidad, circulación de gran escala, y la circulación local en la bahía del Callao. Las descargas hipotéticas de efluentes domésticos fueron transportadas predominantemente hacia el norte, con variaciones estacionales (hacia el noroeste en verano, por la descarga de los ríos). Las simulaciones con escenarios de viento norte, mostraron el transporte de las descargas hipotéticas hasta la bahía de Miraflores. Durante el periodo de este estudio, la concentración observada de contaminantes en la bahía del Callao superó los estándares de calidad ambiental de la Ley de Aguas, por lo que se debe evitar introducir más efluentes, y más bien implementar sistemas adecuados de tratamiento y disposición de efluentes (i.e. planta de tratamiento y emisario submarino).
    Description: The objective was to simulate the marine circulation and hypothetical discharges in Callao bay, taking into account climatological seasonal variations and considering the direction and intensity of wind forcings. ROMS (Regional Oceanic Model System) model with the nesting tool AGRIF (Adaptive Grid Refinement in Fortran) were used. An hybrid bathymetry was used from ETOPO2, GEBCO, DHN and IMARPE; winds from MWF-Quikscat, tides from TPXO6.2, initial conditions from WOA, boundary conditions from COADS, and information of rivers, aquatic quality and domestic effluents. The model represented adequately the patterns of temperature, salinity and circulation at large scale and small scale in Callao bay. The hypothetical domestic effluent discharges were transported predominately towards north, with seasonal variations (to northwest in summer, due to rivers discharges). Simulations with northern winds scenarios, showed a transport of hypothetical discharges to Miraflores bay. During this study period, observed pollutants concentration in Callao bay exceeded the environmental quality standards of the Water Law, so the introduction of additional effluents should be avoided, and an adequate treatment and disposal system (i.e. treatment plant and submarine emissary) should be implemented
    Description: Published
    Keywords: Models ; Marine pollution ; Domestic effluents ; Marina ; Efluentes domesticos ; Contaminacion
    Repository Name: AquaDocs
    Type: Journal Contribution , Not Known
    Format: pp.181-192
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 2
    Publication Date: 2021-03-25
    Description: The individual-based trophic model Osmose is applied to the upwelling marine ecosystem off the coast of Peru. The dynamics and life cycle of eight major species of the Peruvian marine ecosystem are explicitly considered in the model. Reference simulations provide an overview of the trophic structure of the Peruvian ecosystem during the period 2000–2006. Results of model calibration and simulations are discussed in the light of current empirical knowledge on the trophic functioning of the Peruvian ecosystem and are compared to outputs obtained recently using the trophic model Ecopath. The impacts on the ecosystem of restoration plans for the depleted hake (Merluccius gayi peruanus) population are explored through two management scenarios: a) a long term reduction of fishing effort targeting hake and b) a moratorium on the hake fishery. The simulations help better understand the recent failure of a 20 month hake moratorium and provide long-term strategic support to ecosystem-based management. Limits of our approach are discussed and recommendations are detailed for future developments of the Osmose model and ecosystem approach to fishery management in the Peruvian context.
    Type: Article , PeerReviewed
    Format: text
    Format: text
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...