Related Links
Spatial distribution of frequency and intensity of dust phenomenon based on horizontal visibility field in Khuzestan province | ||
| طبیعت ایران | ||
| Article 7, Volume 6, Issue 3 - Serial Number 28, July and August 2021, Pages 75-81 PDF (388.3 K) | ||
| Document Type: Scientific Letters | ||
| DOI: 10.22092/irn.2021.353304.1332 | ||
| Authors | ||
| Fatemeh Dargahian* 1; samaneh Razavizadeh2 | ||
| 1, Assistant Prof., ., Desert Research Division, Research Institute of Forests and Rangelands | ||
| 2Assistant Prof., Desert Research Division, Research Institute of Forests and Rangelands | ||
| Abstract | ||
| Although dust storms have been one of the challenges in most provinces of the country in the last two decades, Khuzestan province has been most affected by this destructive phenomenon. Since the frequency and intensity of this phenomenon in Khuzestan province do not have the same spatial distribution, horizontal visibility field data at synoptic stations in a common statistical period (2001-2018) were used to identify the frequency and intensity potential of this phenomenon. To be more accurate in the spatial distribution of this phenomenon, instead of days with dust, synoptic hourly data of dust occurrence have been used. Data with a horizontal visibility field of 100 m and 1000 m were used to identify the potential of supercritical and critical dust conditions, respectively. Other classes of horizontal visibility, including the 3000-m horizontal visibility, the 5000-m horizontal visibility, and the 9000-meter horizontal visibility were zoned. The results showed that the spatial distribution of critical views in Khuzestan province, due to the decrease in wind speed, followed the process of particle subsidence as well as the rising areas and around the internal dust hotspots. The spatial distribution of visibility of 3000 meters and less shows the highest intensity and frequency in airport areas such as Ahvaz and Abadan International Airports and Dezful and Omidieh Airports. Awareness and knowledge of areas with frequency and intensity of dust, especially in the critical and supercritical horizontal visibility field helps planners and decision-makers in performing and selecting executive operations to reduce and control dust storms in Khuzestan province. | ||
| Keywords | ||
| Critical and supercritical conditions; horizontal field of view; dust storm | ||
| References | ||
|
- Al-Hemoud, A., Al-Dousari, A., Al-Dashti, H., Petrov, P., Al-Saleh, A., Al-Khafaji, S. and Koutrakis, P., 2020. Sand and dust storm trajectories from Iraq Mesopotamian flood plain to Kuwait. Science of the Total Environment, 710: 136291. - Ekhtesasi, M.R., Moradi, N. and Rostami, F., 2002. Investigate the change pattern of dust storms using horizontal visibility Index (Hv) and the standard precipitation index (SPI) (a case study of Esfahan city). The fifth conference of science and watershed engineering, Esfahan, - Indoitu, R., Orlovsky, L. and Orlovsky., N., 2012. Dust storms in Central Asia: Spatial and temporal variations Journal of Arid Environments, 85: 62-70. - Middleton, N., Tozer, P. and Tozer, B., 2019. Sand and dust storms: underrated natural hazards. Disasters, 43(2): 390-409. - Namdari, s., Valizadeh, K.K., Rasuly, A.A. and Saraf, B.S., 2016. Spatio-temporal analysis of MODIS AOD over western part of Iran. Arabian Journal of Geosciences, 9(3): 1-11. - Sissakian, V., Al-Ansari, N. and Knutsson, S., 2013. Sand and dust storm events in Iraq. Journal of Natural Science, 5(10): 1084-1094. - Rashki, A., Middleton, N. J. and Goudie, A. S., 2021. Dust storms in Iran–Distribution, causes, frequencies and impacts. Aeolian Research, 48: 100655. - Broomandi, P., Karaca, F., Guney, M., Fathian, A., Geng, X. and Kim, J. R., 2021. Destinations frequently impacted by dust storms originating from southwest Iran. Atmospheric Research, 248: 105264. -Wang., 2015, WMO-No. 306, 2014, Manual on Codes Regional Codes and National Coding Practices: - Vali, A. and Roustae, F., 2018. Investigation of the wind erosion trend in central Iran using dust storm index in the last fifty years. J. Water Soil Sci., 21: 189-200. (In Persian) | ||
|
Statistics Article View: 291 PDF Download: 588 |
||
Journal management system. designed by sinaweb