نتایج جستجو برای: dust and sand storms

تعداد نتایج: 16843625  

2016
Enrique H Bucher Ariel F Stein

Starting in 2006, a new source of intense salt dust storms developed in Mar Chiquita (Córdoba, Argentina), the largest saline lake in South America. Storms originate from vast mudflats left by a 30-year expansion-retreat cycle of the lake due to changes in the regional rainfall regime. The annual frequency of salt dust storms correlated with the size of the salt mudflats. Events were restricted...

Bakand, Shahnaz, Ghazi Khansari, MMahmood, Koohi, Mohammad Kazem, Menhaje-Bena, Rabee, Modabberi, Soroush,

Introduction: Particulate matter (PM) is known as the most common cause of air pollution in the world. Activities of sand quarries are known as one of the emission sources in Tehran. This study aimed at investigating the geological and environmental factors of airborne particles in an active quarry in the west of Tehran. Material and Methods: Three methods of dust sampling were used. totally, ...

1999
W. M. Farrell M. L. Kaiser M. D. Desch J. G. Houser S. A. Cummer G. A. Landis

We present a model addressing the possible electrification of Martian dust storms based on the effective electrical charging of an individual dust grain. An upper charge bound on a grain can be determined based on the grain capacitance in the lowpressure Martian atmosphere. It is assumed that treiboelectric and inductive processes, like that presumed operating in terrestrial dust storms, can el...

2002
B. H. Barnum N. S. Winstead Amy Hakola P. Colarco O. B. Toon P. Ginoux G. W. Brooks L. Hasselbarth B. Toth

An operational model for the forecast of dust storms in Northern Africa, the Middle East and Southwest Asia has been developed for the United States Air Force Weather Agency (AFWA). The dust forecast model uses the 5 generation Penn State Mesoscale Meteorology Model (MM5) and the University of Colorado CARMA dust transport model. In a unique study, AFWA undertook a 60 study to evaluate the effe...

2016
Hussein Sabah Jaber

In this article, the Environmental pollution in Iraq was studied by using the remote sensing techniques for the period (2010-2014). In general, the environmental pollution can be divided into three major parts: Air, Water, and soil pollutions. To overcome the problem, multi-satellite images with different resolution and bands at different dates were used to detect and quantize the source of pol...

2006
Daniel J. Lacks Artem Levandovsky

Triboelectric charging occurs in granular insulating systems even when all particles are composed of identical material. A simple model is used here to address triboelectric charging in such systems. The basis of the model is the existence of electrons trapped in high-energy states, which can be released during collisions with another particle and transferred to the other particle. This model s...

Journal: :Int. J. Digital Earth 2013
Qunying Huang Chaowei Phil Yang Karl Benedict Songqing Chen Abdelmounaam Rezgui Jibo Xie

The simulations and potential forecasting of dust storms are of significant interest to public health and environment sciences. Dust storms have interannual variabilities and are typical disruptive events. The computing platform for a dust storm forecasting operational system should support a disruptive fashion by scaling up to enable high-resolution forecasting and massive public access when d...

Journal: :Journal of North Khorasan University of Medical Sciences 2011

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