THIRUVANANTHAPURAM: An interim report submitted by a team of scientists to study in Kozhikode revealed that the landslides were man-made though intense rains added to the woes. The scientists also recommend Japanese model offshore barriers to protect seawalls along coast to check erosion and flash floods, while revealing a study report which says that 593 acres in got submerged over the past four decades due to coastal erosion.

“In the affected areas, all the loose soil has been washed away and flash floods have inundated low-lying areas. The second spell of monsoon can be disastrous if people in inundated areas such as Wayanad are reluctant to move to safer places. The shutters of Banasura Sagar and Karapuzha dams will be opened any time and it could further inundate the low-lying areas,” Kerala state disaster management authority (KSDMA) officials said.

“An team of scientists and experts on water resources, soil conservation, geology and mining, among others has submitted its interim report on the impact assessment studies in the flood-hit and landslide-affected Kattipara and Karinchola. As per the report, the disaster is mainly man-made as private parties encroached upon land downstream of the water fall, including 10 acres at Kattipara. Also, land vulnerable to landslides was distributed along the hilly ranges and slopes over the years. The intense rain has added to the havoc. We are in the process of submitting the final report,” Centre for Water Resources Development and Management (CWRDM) executive director and senior principal scientist Anitha A B said.

Revealing a study report on coastal erosion in Kozhikode, which has claimed 593 acre land from 1973 to 2017, CWRDM principal scientist K Chinni Venkata Nagakumar said that various factors like rise in sea level, outer harbour structures and construction of seawalls worked contributed to the loss of land.

“Constructing sea walls can trigger more coastal erosion as it obstructs the wave energy. The wave energy blocked using seawalls gets reversed and over a period gains more strength and gushes in, scooping out the soil beneath the seawall, which leads to seawall collapse and severe coastal erosion. Kerala can opt for the Japanese model of construction of offshore barriers to protect the seawalls. Offshore barriers are inside the sea and can obstruct the wave energy within the sea and reduce the high-wave energy along the coast,” he said.
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