نتایج جستجو برای: plume model

تعداد نتایج: 2109765  

Journal: :international journal of environmental research 2010
b.m. sadashiva murthy h.s. ramesh m. mahadevaswamy

the sources of groundwater pollution such as, industrial effluents, sewage and extensive farming have lead to agrochemical pollution. mathematical modeling helps to analyze the existing situation, allows forecasting, and to evaluate the effects of changes in the surrounding water quality. the present research has been focused mainly towards understanding the various processes affecting the tran...

Journal: :international journal of environmental research 2015
a. agah f. doulati ardejani

this paper investigates the importance of considering biomass growth and decay for predicting a field scale microbial degradation of btex plume in an unconfined aquifer system in the pump station area of tehran oil refinery (tor), iran. a two-dimensional finite volume model has been presented to predict multi-species reactive transport incorporating physical, chemical and biological processes i...

Journal: :محیط شناسی 0
خسرو اشرفی استادیار گروه مهندسی عمران محیط زیست دانشکدۀ محیط زیست دانشگاه تهران مجید شفیع پور مطلق استادیار گروه مهندسی عمران محیط زیست دانشکدۀ محیط زیست دانشگاه تهران حدیث عباس زاده امیردهی کارشناس ارشد مهندسی عمران محیط زیست دانشکدۀ محیط زیست دانشگاه تهران

introduction air pollution has harmful effect on human health and the environment. accordingly, considerable effort has been put to analyze the air pollutants. one important issue is the spatial distribution of these pollutants. dispersion of the pollutants released from sources on the ground is mostly driven by the planetary boundary layer where turbulent flow causes mixing of the content of t...

ژورنال: مهندسی دریا 2019

Considering the increase in number of offshore oil production projects and for better understanding of plume dynamics in accidental underwater oil blowouts, a series of laboratory experiments in a square cross section open top basin were carried out to investigate the effect of changes in seawater stratification and water column stability on plume dynamics and peeling height.  Accordingly the o...

2012
Maria Val Martin Ralph A. Kahn Jennifer A. Logan Ronan Paugam Martin Wooster Charles Ichoku

[1] We use a plume height climatology derived from space-based Multiangle Imaging Spectroradiometer (MISR) observations to evaluate the performance of a widely used plume-rise model. We initialize the model with assimilated meteorological fields from the NASA Goddard Earth Observing System and estimated fuel moisture content at the location and time of the MISR measurements. Fire properties tha...

2010
Huijie Xue Yi Du

A high-resolution coastal ocean model was developed to simulate the temporal/spatial variability of the Kennebec–Androscoggin (K–A) river plume and the circulation in Casco Bay. The model results agree favorably with the moored and shipboard observations of velocity, temperature, and salinity. The surface salinity gradient was used to distinguish the plume from the ambient coastal water. The ca...

Journal: :Journal of the Air Pollution Control Association 1976

2005
Shu-Chuan Lin Ban-Yuan Kuo Ling-Yun Chiao Peter E. van Keken

The hypothesis that thermal plumes contribute to the Cenozoic magmatism in East Africa is now widely accepted. The controversy lies on how many plumes exist and where they may be located. In this study we show numerical experiments of mantle convection models for a number of thermal plume models and discuss the implications for the melt generation in East Africa. We investigate how the plume(s)...

2014
John R. Taylor

Plume rise is a key variable in air quality modelling. The plume rise model implemented in CSIRO’s The Air Pollution Model (TAPM) was implemented in MATLAB, and the plume rise through modelled and observed boundary layers compared for an overnight strongly stable period. Contrary to expectations, the plume rise height was similar in the modelled and observed boundary layers despite a large diff...

2010
Meng Xia Lian Xie Leonard J. Pietrafesa

[1] Based on a calibrated coastal plane estuary plume model, ideal model hindcasts of estuary plumes are used to describe the evolution of the plume pattern in response to river discharge and local wind forcing by selecting a typical partially mixed estuary (the Cape Fear River Estuary or CFRE). With the help of an existing calibrated plume model, as described by Xia et al. (2007), simulations ...

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