نتایج جستجو برای: southeast of urmia lake
تعداد نتایج: 21172704 فیلتر نتایج به سال:
126 abstract: in this research we studied the effects of cyclic hydration and dehydration of cysts of artemia urmiana and artemia parthenogenetica on the hatching percentage, survival and growth. the experiment was carried out in 3 treatments (1-3 hydration/dehydration cycles) with 3 replicates for each treatment. later effects of cold preservation at -20°c during three time periods were ...
introduction azarshahr plain is one of the plains adjacent tothe lake urmia that has been faced, during recent years,withover extraction of groundwater and alsoexposed to salinity enrichment. on the other hand, urmia lake with about 5000 square kilometers is the relatively vastlake with hyper-saline water as a rare biosphere resource in iran and the world. this lake has a great economic, social...
The relation between climatic parameters (relative air humidity) and the water activity of the Urmia Sea water determines the possible maximum evaporation of the lake. Using the Pitzer thermodynamic approach, the activity of the Urmia Lake water during evaporation was calculated and compared to the present relative air humidity above the water. Present climatic conditions allow the Urmia Sea wa...
Lake Urmia in northwestern Iran is one of the hypersaline lakes of world. In the Urmia region a Cenozoic island arc was formed by northeastward subduction of Neo-Tethyan oceanic plate beneath central Iran; the lake is therefore located in the fore-arc basin tectonic setting. Satellite imagery of the Urmia region illustrates that the trend of faults are in two main NE-SW and NW-SE directions. Th...
Lake Urmia is the 20th largest lake and the second largest hyper saline lake (before September 2010) in the world. It is also the largest inland body of salt water in the Middle East. Nevertheless, the lake has been in a critical situation in recent years due to decreasing surface water and increasing salinity. This study modeled the spatiotemporal changes of Lake Urmia in the period 2000–2013 ...
in this study some thermodynamic parameters including freezing point, boiling point and the vapor pressure of urmia lake salt water were investigated as some important environmentally monitored physicochemical properties of urmia lake. in this regard salt concentration is chiefly responsible for the modification of the thermodynamic properties of urmia lake water which affects its overall envir...
urmia lake and its surroundng wetlands have been severely affected by recent droughts (1998–2003) and a considerable decrease in inflow has affected lake ecosystem components. integrated ecosystem-based management is a useful managing tool for the wise use and biodiversity conservation of wetlands. in the process of developing an integrated ecosystem-based management model for urmia lake, the i...
introduction lake terraces are geomorphological evidence of climate change during quaternary. location of these terraces location in different elevation shows paleo water lake level fluctuations. investigation about urmia lake terraces was conducted by bobek (1973).he found those terraces in 45-55 meter above urmia water level on that time. according to bobek, development of lake area in paleo ...
abstract the urmia lake as an important water body in the northwest of iran, recently is faced with a critical level reduction, which makes it important to evaluate the causes. in this regard understanding of the lake's behavior and assessing effect of tele-connections on lake level oscillations is necessary. this subject constructs objective of the present paper that applies the spectral analy...
nature has always proven that it is able to overcome its problems. however, humanmanipulation has led to environmental degradations. the dryness of a thousand-year urmia lake(a brine water lake in iran) is an example of environmental degradation that happened due tosuccessive droughts and construction of dams on the basin of this lake. this study examinesmethods for the revival of urmia lake by...
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