Fetid smell of the Arabian Sea

Ecology

Photo from: thehindu.com

16.09.11.Otvratitelny smell coming from the sea, in some areas of the state of Kerala in the last few days, the researchers argue that there is no cause for alarm and call causes.

Some scholars have attributed this phenomenon to the large mass of algae "lost" in the decrease in salinity due to the inflow of fresh water from rivers, but other researchers do not agree with this and said that this phenomenon is related to seismic factors.

A team of researchers from the University of Kerala, who study these phenomena, reported that foul smell was caused by bacterial decomposition, possibly algal blooms. They said that they came to the conclusion, based on the study of various parameters, such as the color of the sea, salinity, temperature, pH, nutrients, plankton, bacteria and kill fish. However, Dr. Saynadin Pattazhi, Assistant Professor of Zoology in SN College Kollam said the stench was due to seismic events, such as tremors of moderate intensity, which was observed in several districts of Kerala and other states recently. While parameters such as salinity and temperature were within optimal levels, there were no conditions for the appearance of algal blooms, mass death and decomposition of algae. Pattazhi doctor said, "If algal blooms occurred, the algae will float on the surface of the sea, that just has not happened yet."

Anoxic conditions at night, changes in water quality, pollution, upwelling, nutrient deficiencies, emissions, outflows during the southwest monsoon was not a very natural process, but the odor was obvious! Dr. Pattazhi said. "If the mass death of plankton was due to lower salinity, why it has no effect on the fauna of fish and other animals? No loss of fish and other animals that were observed during this period. " Stink and the "red rain" was observed in 2000, 2001 and 2011 in the state of Kerala. These events were preceded by a low-intensity tremors in several districts of Kerala, massive landslides and mudslides wells. The main reason for the smell of the sea was due to geological changes in the sea, the doctor said. December 12, 2000 earthquake and less intense aftershocks that occurred in 2001 resulted in several significant changes in the ground and in the air. The epicenter was near Kottayam. If the "fault" of what happened in the sea of hydrogen sulfide and other inert gases, the event is not related to algal blooms, salinity and changes of number of nutrients.

Sometimes, after the release of gas from the bottom of the sea, the molten lava seeps to the surface. Some fishermen have recently reported that they saw a black liquid oozed from the bottom to the sea surface.

Translation by: Villy_Wurman  site Realnoeblyndelo

Source: The Hindu

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