نتایج جستجو برای: dust and sand storms

تعداد نتایج: 16843625  

Journal: :Journal of Geophysical Research: Atmospheres 2017

Journal: :Journal of the Meteorological Society of Japan. Ser. II 1939

Journal: :TELKOMNIKA Telecommunication Computing Electronics and Control 2022

In the fifth generation of wireless communication systems (5G), millimeter wave (mmWave) signal can be affected by many challenges in irregular environments such as dust and sand storms. this paper, we investigate attenuation that faces a mmWave link dusty environment for different sizes particles. Further, derive model to calculate total mobile and/or internet things (IoT) base stations highne...

Journal: :تحقیقات جغرافیایی 0
بهرام نجف پور گروه جغرافیا دانشگاه پیام نور

abstract in recent years, dust storm in western part of iran, especially fars province, caused various problems for people. the aim of this research is the identification of circulation patterns producing dust storms over fars province. for this purpose, firstly the code number 6 of current weather at 12 gmt belongs to 8 synoptic stations during the statistical period of 1992-2003 has been extr...

D.S.A. Wijesundara J.W. Damunupola S.A. Krishnarajah S.M.K.H. Wijayabandara W.A.M. Daundasekera

Ophiopogon japonicus is a perennial, ornamental foliage plant, whichbelongs to the family Liliaceae. It has a high demand in the local andinternational export market due to the presence of glossy white-green stripped lanceolate leaves. Improved leaves and plants of O. japonicus will be more popular in the floriculture industry. Hence, objective was to investigate the growth responses of O. japo...

2013
K. PRABHAKARAN P. G. GUNASEKAR K. Prabhakaran P. Gunasekar

Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including s...

2016
Marith Reheis Frank Urban Marith C. Reheis Frank E. Urban

Vertical dust deposition rates (dust flux) are a complex response to the interaction of seasonal precipitation, wind, changes in plant cover and land use, dust source type, and local vs. distant dust emission in the southwestern U.S. Seasonal dust flux in the Mojave–southern Great Basin (MSGB) deserts, measured from 1999 to 2008, is similar in summer–fall and winter–spring, and antecedent preci...

Journal: :International Journal of Digital Earth 2023

According to the United Nations Sustainable Development Goals (SDG 15.3), frequent sand and dust storms (SDSs) in spring are a long-term challenge prevention control of land degradation on Mongolian plateau. In this study, MODIS remote sensing data used monitor analyse SDS events Plateau. The annual distribution SDSs (March May) from 2000 2021 obtained based storm detection index. overall class...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2008
Murilo P Almeida Eric J R Parteli José S Andrade Hans J Herrmann

Saltation, the motion of sand grains in a sequence of ballistic trajectories close to the ground, is a major factor for surface erosion, dune formation, and triggering of dust storms on Mars. Although this mode of sand transport has been matter of research for decades through both simulations and wind tunnel experiments under Earth and Mars conditions, it has not been possible to provide accura...

Dust is referred to sediments of less than 100 microns in size which are transmitted as suspended particles. Dust storms are events which naturally occur in arid and semi-arid areas, especially in subtropical latitudes. One of the most known sources of dust is the west of Asia, including Arabian Peninsula, Syria, Iraq, and Iran, especially Khuzestan Province. The purpose of this study is to inv...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید