HIRUVANANTHAPURAM: The world over, Kerala is reputed as a "green land" dominated by "red politics."
Now red rains and vanishing wells are sending shock waves across "god's own country" as scientists are yet to reach definite conclusions regarding these rare phenomena.
While caving-in of large number of wells had been reported across the state during the last two months, several places in central Kerala have received red-coloured rains since last week. In some places, people even reported having received yellow, green and black rain.
The experts of the Centre for Earth Science Studies (CESS) here have carried out preliminary tests of the coloured rain waters collected by people in vessels, but say that a convincing explanation could be possible only after a detailed analysis.
In the case of caving-in of wells, the state government has sought the help of experts from central institutions for a detailed study of the phenomenon since Kerala lacked the wherewithal to take up an in-depth analysis.
In the last couple of months, 175 wells in homesteads across the state were found filled up with mud and rubbles overnight.
The fact that some of the areas where well-collpase reported had experienced recurrence of mild tremors since last year had heightened the commonman's fear.
However, a preliminary study by CESS experts found no evidence to link the well-collpases with seismic activity.
"The main reasons for well-collapse are bad construction of wells coupled with hydrogrpahic pressure casued by abnormal rains this year," Dr M Baba, director of CESS, said.
Kerala had received good summer showers this year followed by early monsoon rains which so far had showed 11 per cent increase than the normal rainfall, Baba pointed out.
The study held "bad construction" of wells as one of the important causes for caving-in of wells.
"Wells are not dug where they should be dug. In most cases, fragile rings are used. They get collapsed when the water pressure increases," Baba said.
The "red rain" was first reported from Changanassery in Kottayam district. At first, it was dismissed as an "isolated" case. But in the next days, coloured rains were reported from Ernakulam, Pathanamthitta and Palakkad districts.
The panic-striken people collected samples of the coloured water in kitchen vessels. This greatly helped the experts to get access to samples conduct their studies.
According to Baba, the coloured rain waters is being subjected to detailed tests by scientists to identify its source before which it would be difficult to jump to any conclusion.
"On the face of it, one could safely say that well-collpases and red rain are not related phenomena, as feared by some people," he added.