Climatology
Nafiseh Rahimi; Saeed jahanbakhsh; Brooman Salahei
Volume 23, Issue 70 , March 2020, , Pages 145-167
Abstract
Strong winds are one of natural disasters that sometimes cause enormous Financial and physical damages. Since northwest of Iran and specially Ardabil Province is one of windy regions, this study tried to identify synoptic patterns which bring strong winds. Through considering equal and threshold wind ...
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Strong winds are one of natural disasters that sometimes cause enormous Financial and physical damages. Since northwest of Iran and specially Ardabil Province is one of windy regions, this study tried to identify synoptic patterns which bring strong winds. Through considering equal and threshold wind speeding over 28 knots per second, 783 days identified as wind crashing days in Ardabil province. Then by data component- based analysis of 500hPa geo-potential height of the 783-days detected seven components which explain 92% of variance. Finally by clustering seven components identified ten patterns as synoptic patterns that are responsible for Strong wind of Ardabil province. The survey of topographic arrangement of these patterns indicates the rise of trough and ridge levels to these patterns. This means that the patterns consists of, mainly, trough, ridge, or combination of both and aren’t observed other systems such as cut off, block systems, etc. Although mentioned systems may be observe in individual patterns of each of the 783 days, but the systems aren’t responsible for the dominance and influence. The temporal distribution patterns show that two patterns, 6 and 7which occurs in the summer, has a similar system at 1000 hPa level when it compares with other models which occur in winter, spring, fall. What's notable, reversal of location position of pressure systems, 1000 hPa, in two patterns of summer, so that a low pressure instead of high pressure is over the Zagros and a high pressure instead of low pressure is over the Caspian Sea.
Hamidreza Varesi; Hoshang Sarvar; Omid Mobaraki; Mahdi Abdolahzadeh
Volume 16, Issue 40 , September 2012, , Pages 175-199
Abstract
The ecotourism is one kinds of natural Tourism. That has emphasis on interaction with nature environment for protection and education. In reality ecotourism is new orientation in tourism industry. The prospects and nature beautiful sight is be tourist attractions this kind tourism.
On the basis of estimates ...
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The ecotourism is one kinds of natural Tourism. That has emphasis on interaction with nature environment for protection and education. In reality ecotourism is new orientation in tourism industry. The prospects and nature beautiful sight is be tourist attractions this kind tourism.
On the basis of estimates of existing Iran country from the perspective natural and historical tourism attractive is one of ten country of world, and from the perspective tourism variety is one of five country of world, and from the perspective manual industries verity is component two or three country of world. Ardabil province is one of regions that have ecotourism attractiveness. This province have new view, plains, leaks, ponds, many waterfall, mineral spring, mountainous, and is one of regional of ecotourism. The purpose in this research is assessment of ecotourism attractive Ardabil province with use from SWOT analysis model and the approach method is compound, documental and containing analysis, the results of the research show that this province have capacity of to be changed with one from natural tourism regional. And in this province is felling necessity of tourism development with axis of ecotourism in target of creating with sustainable development.