Investigation expansion and occurrence of red tide in the Persian Gulf and Oman Sea using analysis of MODIS sensor data

Subject Areas : Water and Environment

samad Hamzei ¹ , mohammad sedigh Mortazavi ² , abas ali Aliakbari Bidokht ³ , Abolhassan Gheibi ⁴

1 - Scientific member of Islamic Azad University, Bandar Abbas branch, Bandar Abbas, Iran. (Corresponding author)
2 - Ecology of the Persian Gulf and Oman Sea Institue of Persian Gulf and Oman Sea.
3 - Scientific member of Science and Research branch, Islamic Azad University, Tehran, Iran.
4 - Scientific member of Hormozgan University, Hormozgan, Iran

Received: 2011-04-05 Accepted : 2011-08-17 Published : 2011-09-23

Keywords: red tide, Persian Gulf, harmful algal bloom, MODIS sensor,

Abstract :

Cochlodinium polykrikoides red tide occurred in the fall and winter 2008-2009 in the coastal waters of Persian Gulf and Oman Sea that surprised many marine and environmental organizations.This phenomenon with more than thirty tons fisheries mortality in the Hormozgan province caused to decrease fish consumption by the people. In this research, we received data and images from Aqua and Terra satellites of  ODIS sensor. We used the local algorithms for making Persian Gulf and Oman Sea chlorophyll and temperature images.We compared local algorithm with field measurements and satellite images and observations of real remote sensing data. We corrected spectral coefficients, and ultimately results, was useful expansion rate of harmful algalbloom.Satellite images show increase chlorophyll in areas harmful algal bloom (red tide) was occurred.In the industrial population cities bordering the Strait of Hormuz, algal density is high. The inflow current has important role to Transfusion of red tide to the western regions of the Persian Gulf.Most of the growth of red tide in the north of the Strait can be seen by the satellite is close to 9 months in this area has been steady.

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