MONITORING AND ZONING METROLOGICAL DROUGHT CHARACTERISTICS USING MARKOV CHAIN AND GEO-STATISTICAL METHODS (CASE STUDY: QAZVIN PROVINCE)

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Maghsoud F.; MAKIAN A.; MOHSENI SARAVI M.; BAZRAFSHAN O.

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Paper Information

Journal: Journal of Range and Watershed Managment Year:2017 | Volume:69 | Issue:4 Page(s): 1075-1099

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Title

MONITORING AND ZONING METROLOGICAL DROUGHT CHARACTERISTICS USING MARKOV CHAIN AND GEO-STATISTICAL METHODS (CASE STUDY: QAZVIN PROVINCE)

Author(s)

Maghsoud F. | MAKIAN A. | MOHSENI SARAVI M. | BAZRAFSHAN O. | Issue Writer Certificate

Keywords

MONITORINGQ2

ZONINGQ2

METROLOGICAL DROUGHTQ2

MARKOV CHAINQ2

GEO-STATISTICAL METHODQ2

QAZVINQ2

Abstract

When the rainfall in each period of time is less than its long-term one, meteorological drought happens. Usually related indicators are used after the event but effective drought management demands indices to be specified before the hazard. In this research, Standard Precipitation Index (SPI) is used for MONITORING draught in precipitation stations within the province for a- 37- year period (1971-2008) using 1, 3, 6, 9, 12, 24 and 48 monthly temporal scale. Using MARKOV CHAIN and four interpolation methods, draught characteristics in QAZVIN province were examined and monitored. The results revealed that as temporal scale increases, positive and negative frequency decrease and intensity goes up. Transition matrixes illustrated that dominant status in each scale is approximately normal. According to the amounts of return period in some gauges, the lowest period is for approximately normal, mildly humid and mildly dry, respectively. Variogram amounts demonstrated that outstanding models for 1, 6, 9, 12 and 24 are Gaussian and Exponential for 3 and 48 monthly scales. Finally, the best interpolation for each scale is determined based on evaluation indices in order to create extent maps of drought for 2007-2008. It was found out that as temporal scale increases, drought extent and status from East to West of the study area decreases.

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APA: Copy

Maghsoud, F., MAKIAN, A., MOHSENI SARAVI, M., & BAZRAFSHAN, O.. (2017). MONITORING AND ZONING METROLOGICAL DROUGHT CHARACTERISTICS USING MARKOV CHAIN AND GEO-STATISTICAL METHODS (CASE STUDY: QAZVIN PROVINCE). JOURNAL OF RANGE AND WATERSHED MANAGEMENT (IRANIAN JOURNAL OF NATURAL RESOURCES), 69(4), 1075-1099. SID. https://sid.ir/paper/162417/en

Vancouver: Copy

Maghsoud F., MAKIAN A., MOHSENI SARAVI M., BAZRAFSHAN O.. MONITORING AND ZONING METROLOGICAL DROUGHT CHARACTERISTICS USING MARKOV CHAIN AND GEO-STATISTICAL METHODS (CASE STUDY: QAZVIN PROVINCE). JOURNAL OF RANGE AND WATERSHED MANAGEMENT (IRANIAN JOURNAL OF NATURAL RESOURCES)[Internet]. 2017;69(4):1075-1099. Available from: https://sid.ir/paper/162417/en

IEEE: Copy

F. Maghsoud, A. MAKIAN, M. MOHSENI SARAVI, and O. BAZRAFSHAN, “MONITORING AND ZONING METROLOGICAL DROUGHT CHARACTERISTICS USING MARKOV CHAIN AND GEO-STATISTICAL METHODS (CASE STUDY: QAZVIN PROVINCE),” JOURNAL OF RANGE AND WATERSHED MANAGEMENT (IRANIAN JOURNAL OF NATURAL RESOURCES), vol. 69, no. 4, pp. 1075–1099, 2017, [Online]. Available: https://sid.ir/paper/162417/en

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