FOEHN AND FOREST FIRE IN MAZANDARAN AND GILAN PROVINCES A CASE STUDY: THE FOREST FIRE FROM DECEMBER 16 – 21, 2005

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AZIZI GH.; YOUSOFI Y.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Journal: GEOGRAPHICAL RESEARCH Year:2009 | Volume:24 | Issue:1 (92) Page(s): 3-28

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Title

FOEHN AND FOREST FIRE IN MAZANDARAN AND GILAN PROVINCES A CASE STUDY: THE FOREST FIRE FROM DECEMBER 16 – 21, 2005

Author(s)

AZIZI GH. | YOUSOFI Y. | Issue Writer Certificate

Keywords

FOHNQ1

FOREST FIREQ2

ZONAL AND MERIDIONAL WIND COMPONENTSQ3

FRANCIELEQ3

Abstract

In December 16 – 21, 2005 occurred a wild spire FOREST FIRE on about 150 hectares of Gilan and Mazandaran forests. In regarding to study of these less precedence fires, data of frequency, area and time of fires and also their synchronized meteorological data were obtained. The following results are based upon the analysis of the weather pattern of the fire period by using FRANCIELE method and synoptic-dynamic analysis in the study period: during the fire relative in the lee slopes of Alborz relative humidity decrease to %20 and temperature increase to 25oc and in the windward slopes have occurred precipitation and also cloudy conditions. For this reason it seems föhn event has been main factor of fire. Also in the period the calculated FRANCIELE coefficient (k ) shows high dangerous stage of fire ability (0.3 < k). In the case of weather conditions, in these times, the surface maps shown a high pressure tongue that indicated by1020mbisobar and along from a high pressure in west of china with a 1050mb closed sell in its centre. the tongue covered internal area of Iran and southern slopes of Alborz Mountains. In the upper maps it has seen that a ridge with north – south or northwest - southeast axe located upon west-half and north-western of Iran so its upstream portion located on south and west of Alborz Mountains and downstream portion located on north of Iran. Sort of pattern makes possible to move the westerlies from Alborz mountain created FOHN wind. Both ZONAL AND MERIDIONAL WIND COMPONENTS are positive that’s mean westerlies moved from southwest direction and created a suitable condition for föhn phenomena.

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APA: Copy

AZIZI, GH., & YOUSOFI, Y.. (2009). FOEHN AND FOREST FIRE IN MAZANDARAN AND GILAN PROVINCES A CASE STUDY: THE FOREST FIRE FROM DECEMBER 16 – 21, 2005. GEOGRAPHICAL RESEARCH, 24(1 (92)), 3-28. SID. https://sid.ir/paper/30011/en

Vancouver: Copy

AZIZI GH., YOUSOFI Y.. FOEHN AND FOREST FIRE IN MAZANDARAN AND GILAN PROVINCES A CASE STUDY: THE FOREST FIRE FROM DECEMBER 16 – 21, 2005. GEOGRAPHICAL RESEARCH[Internet]. 2009;24(1 (92)):3-28. Available from: https://sid.ir/paper/30011/en

IEEE: Copy

GH. AZIZI, and Y. YOUSOFI, “FOEHN AND FOREST FIRE IN MAZANDARAN AND GILAN PROVINCES A CASE STUDY: THE FOREST FIRE FROM DECEMBER 16 – 21, 2005,” GEOGRAPHICAL RESEARCH, vol. 24, no. 1 (92), pp. 3–28, 2009, [Online]. Available: https://sid.ir/paper/30011/en

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