The hydrogen sulfide in the Black sea
Black sea . shining under the rays of the warm southern sun – what could be better? Huge, alluring, clean, clear and incredibly beautiful… Surely these words come to mind for each of us at the very thought of this sea – the source of inspiration of poets, and favorite vacation spot of many modern citizens. But few know that at the bottom of the warm sea with the proud name of Black lurking danger of death – lifeless abyss, filled with poisonous, flammable, explosive gas with a disgusting smell of rotten eggs.
In the large-scale Oceanographic expeditions made in the distant 1890, it was found that about 90% of the volume of the sea is filled with hydrogen sulfide and only 10% is clean water, not contaminated with poisonous gas. In the lower layer of the sea not able to survive neither animals nor plants, and can exist only in certain types of bacteria. Deadly gas fills up a huge space, killing every living thing in its path. The entire volume of sea water is divided into two parts, the surface water can reach the bottom of the sea only after hundreds of years. This property is unique in whole world there is no sea without a solid bottom.
Maximum glubinnogo sea is a little more than two kilometers. The top layer of water where the marine life has a depth of only 100 meters, and some places the thickness of the layer of pure water barely reaches 50 meters. Beneath it is liquid lens “dead” water, periodically breaking out and showed their destructive nature. Major breakthroughs are quite rare, but each of them brings a lot of harm to the marine inhabitants. According to experts, the explosion of hydrogen sulfide can be compared with the meeting of the Earth with an asteroid, having mass less than half of the moon.
About the reasons of occurrence of hydrogen sulphide
Disputes over the causes of hydrogen sulfide on the bottom of the Black sea does not cease till now. Poisonous gas can flow from cracks in the seabed or be caused by the specific action of bacteria. Without oxygen in the deep layers of the Black sea are able to survive anaerobic bacteria involved in the decomposition of the remains of living organisms. As a result of such decomposition may form hydrogen sulfide. According to another version, a toxic gas could be formed owing to the specific message of the sea with the World ocean through the narrow Strait of the Bosphorus. Some water penetrates from the Mediterranean sea to the Black sea, turning it into a kind of sump, for many years, accumulated a large number of hydrogen sulfide.
The bottom of the Black sea
10 years ago the question of poison gas was considered a priority in the countries of the black sea, but today the threat of hydrogen sulfide though it had forgotten. However, this problem has not disappeared and is not going to disappear. But how real is the risk? Maybe it’s not as scary and hydrogen sulfide, hidden in the depths of the seabed will remain there forever, without disturbing anyone? And what forces may contribute to an explosion of poisonous gas? The answer to these questions may be the following reasoning.
The first reason for a possible explosion
Say, hypothetically, that at the bottom of the Black sea there was an explosion. Needless to clarify what the consequences will be felt by marine organisms and coastal communities? At least, will die first, as a maximum – alas, they… it Sounds good, but who will need to blow up the Black sea? Compelling reason to do so is hardly even the worst of terrorists. But here is the time to remember what used to happen all the troubles on our planet? That’s right – from human actions, often uncontrolled and irresponsible. Just wait for the time when oil and gas companies will pave the pipelines under the Black sea. The complexity of the repair and maintenance of such structures in hazardous environment sooner or later lead to their failure and, consequently, to a massive explosion in the layer of hydrogen sulfide. What happens next is easy to guess. The black sea region may become a zone of ecological disaster, dangerous for human life. Innocent people will pay the price for someone’s reckless actions and disregard for environmental safety.
The second reason for a possible explosion
The cause of the explosion of hydrogen sulfide can be not only human irresponsibility, but also the vagaries of nature. The last such bombing occurred in 1927 during a strong earthquake on the territory of Yalta. Two months before the incident was a phenomenon that surprised the locals – the local fishermen noticed a strange agitation of the water and small swell, as if boiling for unknown reasons. A few minutes later the witnesses were deafening underwater roar – it was a “preparatory” push coming from the depths of the sea.
But the most incredible phenomenon occurred in the sea. Witnesses testified that the disturbance of the earth’s crust was accompanied by a disgusting stench and flashes designed from the smooth sea surface to the heavens. Pillars of fire, shrouded in smoke, has reached several hundred meters in height. The black sea was burning, the air was still the same smell of rotten eggs. Lightning got to those places, where was concentrated the hydrogen sulfide. Versions about the reasons for this were many, one of them the source of the explosion was poison gas on the seabed.