identifying and introducing synoptic patterns which cause storm levels which are more than 50 centimeter in the south coast of the caspian sea

نویسندگان

جواد خوشحال

دانشگاه اصفهان جواد خوشحال

دانشگاه اصفهان عبدالعظیم قانقرمه

دانشگاه اصفهان

چکیده

â â â  aside from its annual and seasonal fluctuation, caspian sea level has sudden change with hourly and daily continuity caused by atmosphere circulation patterns. sometimes these fluctuations are so intense that they make irreparable damage to the economical and social activities in the coastal sea areas. the aim of this study is synoptic recognition of factors causing storm levels in the south coastal caspian sea. the results will help up in environmental planning in order to lessen damages. this study has been carried out in 2007 in the south coastal caspian sea, in the region 20w to 80e and 20n to 70n.the data used in the study is synoptic data with the hourly statistics taken from cdc and the tide gauge station in the area. the description synoptic method is used in the study. â the result of this study showed that in south coastal caspian sea storm levels above 50 centimeters made up by entrance of systems from 10 regions as fallows red sea, western mediterranean, eastern mediterranean, siberian, north africa, north of northern atlantic, median of northern atlantic, south of northern atlantic, black sea and arctic. there systems appeared on the synoptic map forms of saddle, cyclone, anticyclone and vector of cyclone, anticyclone. the investigation of time, frequency of occurrence, source and the route of different systems causing storm levels or the reinforcer of systems energy. also it is probable that the length of the route of these systems over the sea is related to the height of storm levels.â  â â â

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منابع مشابه

it is not possible to understand developments of a country’s culture and civilization without knowing his believes and myths. whether it is north or south, east or west, planes or mountains, sahara or deserts, here in iran every corner includes valuable and precious treasures which are known all over the world, and cultural – historical objects which are found here adorn all well known museums of the globe. zagros mountains, lorestan province locating at the heart of that, are not only the same, but are more prominent than other iranian regions. you can not find someone who does not know what the lorestani bronzes are, and there is no museum that not be pride of having a piece of that. the said bronzes which are manufactured four millenniums b.c. are admired nearly by all those researchers because of their beauty, diversity and technique. lorestani artistic works including stone engraves, bronzes and clays, show an ideal and metaphysical world beside real world which explain mental system of human beings on that era against sensations and phenomena happening around them. men main mental occupation on that time was he unknown world which had surrounded them, and they used to use the religion to fight life’s natural factors, and art was a tool of religious and mythical painting which was far from reality and had entered into the abstract domain. as natural objects have become subjects of lorestani art, it cleanses them from any non – intrinsic limitations and external factors which surround them and darken their meanings, and just shows their main specifications. artist in the said civilization is not searching for realism. although these are few works showing the nature, but in effect there is no wish to imitate touchable factors of the nature, and artist has turned real phenomena to encoded signs as per his own mentality. this procedure is called stylization.

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عنوان ژورنال:
تحقیقات جغرافیایی

جلد ۲۴، شماره ۹۵، صفحات ۱۳۱-۱۵۲

کلمات کلیدی
â â â  aside from its annual and seasonal fluctuation caspian sea level has sudden change with hourly and daily continuity caused by atmosphere circulation patterns. sometimes these fluctuations are so intense that they make irreparable damage to the economical and social activities in the coastal sea areas. the aim of this study is synoptic recognition of factors causing storm levels in the south coastal caspian sea. the results will help up in environmental planning in order to lessen damages. this study has been carried out in 2007 in the south coastal caspian sea in the region 20w to 80e and 20n to 70n.the data used in the study is synoptic data with the hourly statistics taken from cdc and the tide gauge station in the area. the description synoptic method is used in the study. â the result of this study showed that in south coastal caspian sea storm levels above 50 centimeters made up by entrance of systems from 10 regions as fallows red sea western mediterranean eastern mediterranean siberian north africa north of northern atlantic median of northern atlantic south of northern atlantic black sea and arctic. there systems appeared on the synoptic map forms of saddle cyclone anticyclone and vector of cyclone anticyclone. the investigation of time frequency of occurrence source and the route of different systems causing storm levels or the reinforcer of systems energy. also it is probable that the length of the route of these systems over the sea is related to the height of storm levels.â  â â â

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