نتایج جستجو برای: dust storm

تعداد نتایج: 58433  

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In this study, the changes in the Khorramabad storm in the period of 1952 to 2015 have been investigated. For this purpose, data from meteorological codes 06 and 07 were received from the Meteorological Organization of the country, and after identifying the days of winding with dust storms and calculating their monthly frequency, monthly, seasonal and annual time series were analyzed. In this s...

Journal: Desert 2012
A. Miri A. Pahlavanravi H. Ahmadi M.R. Ekhtesasi

Dust storms are catastrophic natural disasters that beside other disasters frequency occur in the arid and semiaridregions worldwide. Drought occurrence, climate aridity, dryness of the Hamoun Lake cause strong winds to below.These conditions have been prepared for dust storms in Sistan region. The damages to Sistan society have beenmeasured using different criteria. The result shows that, peak...

2005
Zhan Guo

The frequent yellow-dust storms in China in recent years have widely disrupted economic activities, destroyed farm land, and created a great hazard to human health. Meanwhile, there are various programs with vast investment from different levels of governments In China to prevent, and mitigate the impact of yellow-dust storms. However, little is known about the casual factors, socioeconomic imp...

2007
W. M. Farrell G. T. Delory S. K. Atreya T. L. Jackson

Introduction: Mars is a planet of many apparent dichotomies in topography, atmospheric evolution , hydrology, and geomagnetism. We describe yet another set of extremes in the area of atmospheric chemistry. While solar photons in fair-weather are a known and well-studied driver of Martian chemistry, there is increasing evidence that electro-chemistry unique to dust storms may be a second new dri...

Journal: :Marine drugs 2016
Aiko Hayashi Andrew Crombie Ernest Lacey Anthony J Richardson Daniel Vuong Andrew M Piggott Gustaaf Hallegraeff

Dust has been widely recognised as an important source of nutrients in the marine environment and as a vector for transporting pathogenic microorganisms. Disturbingly, in the wake of a dust storm event along the eastern Australian coast line in 2009, the Continuous Plankton Recorder collected masses of fungal spores and mycelia (~150,000 spores/m³) forming a floating raft that covered a coastal...

2013
Haosheng Mu Shinji Otani Masato Shinoda Yae Yokoyama Kazunari Onishi Takenobu Hosoda Mikizo Okamoto Youichi Kurozawa

BACKGROUND Every spring, windblown dust storms damage human health and cause many domestic animal deaths in Mongolia. In particular, mass livestock death results in severe, direct economic loss to inhabitants. However, there is little empirical evidence to demonstrate the long-term effects of dust storm, especially in terms of health-related quality of life (HRQoL) secondary to livestock loss. ...

Behnoush Farokhzadeh Davoud Akhzari, Iman Saeedi Mohsen Goodarzi

Dust storms are known as hazardous problems in western part of Iran. Iraq is one of the main sources for dust storm arriving to the western part of Iran. The Radial Basis Function Network model (RBFN) has been used to assess wind erosion hazards in the source area of dust storms over several western Iranian cities. Normalized Difference Salinity Index (NDSI) was used to determine the changes in...

Ahmad Reza Yari, Gholamreza Goudarzi, Majid Farhadi, Maryam Dastoorpoor, Mehdi Vosoughi, Mohammad Javad Mohammadi, Morteza Jafari, Sahar Geravandi,

Background & Aims of the Study: According to statistics reported by the international organization, 500,000 people annually due to airborne particulate matter exposure of the air are dying prematurely. Studies show the dust storm is responsible for the 7.1 % increase of fatality. Control of particulate matter is one of the most important methods of direct and indirect effects of par...

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...

2003
Yingxin Gu William I. Rose Gregg J. S. Bluth

A thermal infrared remote sensing retrieval method developed by Wen and Rose [1994], which retrieves particle sizes, optical depth, and total masses of silicate particles in the volcanic cloud, was applied to an April 07, 2001 sandstorm over northern China, using MODIS. Results indicate that the area of the dust cloud observed was 1.34 million km, the mean particle radius of the dust was 1.44 μ...

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