Under the Chi River in Surin, hot water bubbles up and dead fish rise, triggering fears among local villagers.
Smelling trouble over bubbles by Apinya Wipatayotin
The Mineral Resources Department has urged Surin villagers not to panic over rising water temperatures at the Chi River and said it was a natural phenomenon caused by marsh gas.
Locals have seen hot water bubbles appearing in the Chi River section at Ban Pluang in Muang district since Monday. They found the hot spot is about 80 to 90 centimetres below the surface.
The phenomenon triggered fears of a natural disaster as some fish were reportedly killed by the hot water.
"The hot water is caused by marsh gas,'' said Lertsin Raksakulwong, director of the Mineral Resources Department's environmental geology and geohazard bureau.
"Please don't panic. This is neither a supernatural matter nor volcanic eruptions.''
Marsh gas, which forms when organic material decays in the absence of air, is largely composed of methane.
He said the gas was contained under the river bed until the sand layer became thinner and allowed the gas to be released.
The geologist said the water temperature would return to normal after the gas levels had reduced.
(Source: Bangkok Post, APINYA WIPATAYOTIN, Smelling trouble over bubbles, 15-06-2011)
Chi River - "the longest river in Thailand; it extends 765 km, but carries less water than the second longest river, the Mun...the river rises in the Phetchabun mountains, then runs east through the central Isan provinces of Chaiyaphum, Khon Kaen and Maha Sarakham, and turns south in Roi Et, running through Yasothon to meet the Mun in... Sisaket Province.... It is riddled with leeches.... The river was an 18th century migration route for the expansion of the ethnic Lao people over the Isan plateau" แม่น้ำชี (See Wikipedia)
wetlands - an area of land whose soil is full of water (saturated with moisture, soft wet land) (See Wikipedia)
marsh - a kind of wetland with shallow water that floods often with grass, shrubs, rushes, reeds, moss and other low growing plants on it (See Wikipedia)
marsh gas - methane created by decaying organic matter in marshes produced by the work of microorganisms known as "methanogens", also known as "biogenic gas" (see below)
methane - the extremely flammable and explosive gas commonly used for cooking, also known as "natural gas" (See Wikipedia)
methanogens - microorganisms that live in wetlands areas that produce methane and "marsh gas" (belching) (See Wikipedia)
pass gas - fart, break wind, flatulence, methane in the guts of humans and cows that produces a loud farting noise as well as "burping" and "belching" out of the mouth ตด, การผายลม, การเกิดแก๊สในกระเพาะอาหาร
natural gas - "most natural gas is created by two mechanisms: biogenic and thermogenic. Biogenic gas is created by methanogenic organisms in marshes, bogs, landfills, and shallow sediments. Deeper in the earth, at greater temperature and pressure, thermogenic gas is created from buried organic material" (See Wikipedia)
bio gas - gases produced by the biological breakdown (decay) of organic matter (biodegradable materials) in the absence of oxygen (anaerobic fermentation), the gases produced are primarily methane and carbon dioxide, also called "biogenic gas" (See Wikipedia)
organic - organic substance or material, substances and materials found in or produced by living things (methane "marsh gas" was made from long decayed plants buried underground) (See Wikipedia)
decay - when something is gradually destroyed and disappears by natural processes (example: the rotting corpse decayed, the banana skin thrown on hte trash decayed and become one with the earth) (See Wikipedia)
flammable - something that can catch on fire and burn very easily ซึ่งไวไฟ, ซึ่งลุกเป็นไฟได้ง่าย
bubble - a small ball of air or gas in a liquid such as water ฟอง
mineral - a natural rock substance in the earth, for example coal, salt, diamonds or silver ore แร่, แร่ธาตุ
urged - advised someone very strongly about what action should be taken วิงวอน
panic - a sudden strong feeling of fear which makes you act without thinking carefully, sudden intense uncontrollable fear causing confusion ความหวาดวิตก (See glossary)
natural - found in nature (not made in a factory by humans) ตามธรรมชาติ
phenomenon - something that exists and can be seen, felt, tasted, etc., especially something which is unusual or interesting ปรากฏการณ์
natural phenomenon - something happening in nature (without humans doing anything to make it happen)
spot - one certain place
hot spot - a place that is hot
surface - the flat top part of something, the outside of something
surface of a river - on top of the water (where things such as boats sit as they on the water)
triggered fears - caused people to be afraid
natural disaster - something very bad but natural thing happens (earthquake, tsunami, storm, floods) that causes a lot of damage or kills a lot of people ความหายนะ ภัยพิบัติ
geo - related to the earth ภูมิ ธรณี
hazard - something that is dangerous สิ่งที่เป็นอันตราย
geohazard - a hazard related to the earth (here: marshgas under the earth)
bureau - a government organisation, in this case (usually that collects and distributes information) สำนักงาน
supernatural - caused by forces that cannot be explained by science สิ่งที่เหนือธรรมชาติิ, ปรากฏการณ์หรืออำนาจที่เหนือธรรมชาติ
matter - something that you are discussing, considering or dealing with สิ่งที่พูดถึง ประเด็นที่พูดถึง, เรื่อง, ภารกิจ, งาน
volcano (noun) - ภูเขาไฟ
erupt (verb) - when something suddenly appears or comes out of something (examples: riots suddenly erupted all over the city, he ran to the doctor when red bleeding sores erupted all over his face)
volcanic eruptions - when hot melted rock (lava) is thrown out of a volcano along with ash and steam
contained - kept within limits; controlled; prevented from escaping, spreading and getting larger ได้รับการดูแลและควบคุม
river bed - the ground on the bottom of a river, under the water (also: sea bed)
layer - a thin sheet of a substance; a level of material, such as a type of rock or gas, which is different from the material above or below it ชั้น
sand layer - a thin sheet of sand in or on the earth
release gas - when gas (such as methane) passes out of a place into the air
absence - not being present การหายไป ไม่ปรากฏตัว
in the absence of air - when there is no air
X composed of Y - X has Y as a part of it
largely composed of methane - has methane as its biggest part