JAKARTA - The Geological Agency of the Ministry of Energy and Mineral Resources (ESDM) educates the public to recognize 11 indicators or signs of the emergence of Situjuah type sinkholes or suddenly sinking land and forming a hole that occurs in Jorong Tepi, Nagari Situjuah Batua, Limapuluh City Regency, West Sumatra (Sumbar).
"We have explained 11 initial indicators of the Situjuah type sinkhole to the public and this is very important," said Taufiq Wira Buana, a technical geologist at the Geological Agency of the Ministry of Energy and Mineral Resources, in Limapuluh Kota Regency, Wednesday, quoted by Antara.
The first early symptoms are depressions with vertical holes. Depressions with a diameter ranging from centimeters to several meters as a place for water to come in or out.
Second, said Taufiq, the flow of water or rivers suddenly disappeared. The third indication is a circular or oblong crack where the middle is concave (abnormal).
Furthermore, there are cracks in the ground surface as a water inlet. The pattern of cracks on the surface can extend in the same direction as the underground stream.
"The fifth symptom of water on the surface suddenly disappears," he said.
This condition can also be characterized by irrigation canals, ponds or ponds suddenly leaking and the water disappears into the ground. The next indication is that plants gather at certain points in the area naturally, and are shaped like a circle.
In addition, other symptoms of sinkholes are that there are many springs that appear in close proximity, such as groups, water that suddenly becomes cloudy to change color.
Other indications are that the community's springs or wells suddenly dry up during the rainy season. Then, the soil or area is more humid or wet than the surrounding area. Finally, shallow wells where there is an underground river flow in it.
Taufiq emphasized that dozens of signs or indications of the symptoms of the Situjuah type sinkhole are not all dangerous to safety. However, if the community finds it, it is expected to report to the village apparatus to be forwarded to the Geological Agency.
"The Geological Agency hopes that the public will also be concerned about the signs of this Situjuah type sinkhole," he said.
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