Publication Date:
2021-05-19
Description:
The catastrophic event of red tide has happened in the Strait of Hormuz, the Persian Gulf and Gulf of
Oman from late summer 2008 to spring 2009. With its devastating effects, the phenomenon shocked
all the countries located in the margin of the Persian Gulf and the Gulf of Oman and caused
considerable losses to fishery industries, tourism, and tourist and trade economy of the region. In the
maritime cruise carried out by the Persian Gulf and Gulf of Oman Ecological Research Institute, field
data, including temperature, salinity, chlorophyll-a, dissolved oxygen were obtained for this research.
Satellite information was received from MODIS and MERIS and SeaWiFS sensors. Temperature and
surface chlorophyll images were obtained and compared with the field data and data of PROBE
model. The results obtained from the present research indicated that with the occurrence of harmful
algal blooms (HAB), the Chlorophyll-a and the dissolved oxygen contents increased in the surface
water. Maximum algal density was seen in the northern coasts of the Strait of Hormuz. Less
concentration of algal density was detected in deep and surface offshore water. Our results show that
the occurred algal bloom was the result of seawater temperature drop, water circulation and the
adverse environmental pollutions caused by industrial and urban sewages entering the coastal waters
in this region of the Persian Gulf ,This red tide phenomenon was started in the Strait of Hormuz and
eventually covered about 140,000 km2 of the Persian Gulf and total area of Strait of Hormuz and it
survived for 10 months which is a record amongst the occurred algal blooms across the world.
Temperature and chlorophyll satellite images were proportionate to the measured values obtained by
the field method. This indicates that satellite measurements have acceptable precisions and they can be
used in sea monitoring.
Description:
Published
Keywords:
Hormuz strait
;
Red Tide,
;
MODIS data
Repository Name:
AquaDocs
Type:
Report
,
Not Known
Format:
68pp.
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