THE PROCESS OF SNOWING GUILAN PLAIN ITS CONSEQUENCES

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REZAEI PARVIZ; JANBAZI GHOBADI GHOLAMREZA; JAFARZADEH ALIREZA

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Journal: JOURNAL OF THE STUDIES OF HUMAN SETTLEMENTS PLANNING (JOURNAL OF GEOGRAPHICAL LANDSCAPE) Year:2010 | Volume:5 | Issue:11 Page(s): 57-72

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Title

THE PROCESS OF SNOWING GUILAN PLAIN ITS CONSEQUENCES

Author(s)

REZAEI PARVIZ | JANBAZI GHOBADI GHOLAMREZA | JAFARZADEH ALIREZA | Issue Writer Certificate

Keywords

SOUTHERN COASTS OF THE CASPIAN SEAQ2

RASH CITYQ2

SNOWQ2

Abstract

Sefidrood Valley, running down to the south of the Caspian Sea, plays an important role in transferring and directing humidity towards the Guilan plain. There are many settlements formed densely in this vast land due to its favorable natural conditions. Rasht, being the largest city in the southern part of the Caspian Sea and one of these settlements, with an elevation of 20m from the sea level and a population well over 500.000, is situated in 37o, northern latitude, 23km to the coast. Rasht is one of the wettest places in Iran, the annual average rain fall of which as recorded by the synoptic station there, reaches 1350mm with the rainy days numbering to 130 days of which 7 days are SNOWy between Decembers to March. So it is quite unlikely to have heavy SNOWfall ill Rasht, but should it happen, it would make dramatic effect. In February 1959, for example, there was a heavy SNOW, over one meter in height, falling for a few consecutive days in Rasht. In the winter of 1971, a heavy SNOW covered most areas of the Guilan plain, the height of which had been reported 1.5m. The latest heavy SNOW fell in a period of seven days from Feb 7 - 10, 2004, with a height of 1.6m, equal to 380mm rainfall. The aftermath ofiliat SNOWfall were sever damages occurred to the urban utilities and installations: water filtration station; city water pipeline system; city gas system; power and telecommunication pylons; SNOWbound of urban and rural roads, and falling of city affairs into disarray for two long weeks. The SNOWpack was high in the first 45hrs of falling, the weight of which was reported to amount 28 million tons. This great mass of SNOW made many residential and trade buildings' roofs (1100 cases of complete ruin) collapse and left ten people killed. The SNOW melting and as a result of which, the torrent running in the city in the days after together with the great bulk of SNOW piled in shade made more problems due to high degree of SNOW albedo in the city. The studies showed that no proper consideration had been made to SNOWfall as a disaster in urban designing and architecture. Therefore, the necessary preventive measures, equipping the city with SNOW sweepers, legislating laws and regulations to govern engineering affairs in designing roof sloop and buildings' consolidation had not been taken.The present paper, while reviewing the climatic factors influencing SNOWfall and its probability in Rasht city, aimed at studying the relationship between the precipitation, urbanization and architecture, the technical considerations in urban construction, and roof loading. It is hoped that the results will prove fruitful in improving the regulations governing the urban and architectural designing through computing probable heavy SNOW weight per unit surface and introducing SNOWfall patterns.

Cites

LAKE EFFECT SNOW PHENOMENON AND ITS ROLE ON HEAVY SNOWFALL IN THE SOUTHWEST OF THE CASPIAN SEA

References

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APA: Copy

REZAEI, PARVIZ, JANBAZI GHOBADI, GHOLAMREZA, & JAFARZADEH, ALIREZA. (2010). THE PROCESS OF SNOWING GUILAN PLAIN ITS CONSEQUENCES. JOURNAL OF THE STUDIES OF HUMAN SETTLEMENTS PLANNING (JOURNAL OF GEOGRAPHICAL LANDSCAPE), 5(11), 57-72. SID. https://sid.ir/paper/175814/en

Vancouver: Copy

REZAEI PARVIZ, JANBAZI GHOBADI GHOLAMREZA, JAFARZADEH ALIREZA. THE PROCESS OF SNOWING GUILAN PLAIN ITS CONSEQUENCES. JOURNAL OF THE STUDIES OF HUMAN SETTLEMENTS PLANNING (JOURNAL OF GEOGRAPHICAL LANDSCAPE)[Internet]. 2010;5(11):57-72. Available from: https://sid.ir/paper/175814/en

IEEE: Copy

PARVIZ REZAEI, GHOLAMREZA JANBAZI GHOBADI, and ALIREZA JAFARZADEH, “THE PROCESS OF SNOWING GUILAN PLAIN ITS CONSEQUENCES,” JOURNAL OF THE STUDIES OF HUMAN SETTLEMENTS PLANNING (JOURNAL OF GEOGRAPHICAL LANDSCAPE), vol. 5, no. 11, pp. 57–72, 2010, [Online]. Available: https://sid.ir/paper/175814/en

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