On October 9, the General Department of Natural Disaster Prevention and Control (Ministry of Agriculture and Rural Development) said that the sand dunes on Cua Dai beach (Hoi An) are lengthening in the north; the south is being strongly eroded; and the west and east have changed little.
Previously, on July 13, the furthest point of the sand dune was recorded as 1,046 m long and 193 m wide. By early October, the furthest point was 994 m long and 177 m wide (down 52 m and 16 m respectively).
The sand dunes are shortened because erosion in the south is faster than deposition in the north. "A survey from May to early October recorded that the northern part of the sand dunes was deposited by 50 meters; from July to October, the southern part eroded by about 80 meters," said a representative of the General Department of Natural Disaster Prevention and Control.
Photo of sand dunes floating on Cua Dai beach. (Photo: Internet)
On the sand dunes today, there are many types of plants growing and developing rapidly. Among them, some willow trees are nearly 1 meter high, sea spinach grows all over the sand dunes, the largest area is more than 100 meters.2.
Mr. Nguyen Van Ba, a resident of Cua Dai ward (Hoi An) who often fishes near the sand dunes, said that the sand dunes are constantly changing. The iron stakes that the authorities placed in the south for surveying were lost to the waves, while the north of the sand dunes has been filled in and is higher than before.
The sand dune on Cua Dai beach is located outside the Thu Bon River estuary. It appeared in 2017, then rose above the water and gradually grew. In early April 2019, the General Department of Natural Disaster Prevention and Control organized a team to survey this area, but the cause of its formation has not been determined. Quang Nam province has put up signs prohibiting people from going up the sand dune.
Cua Dai beach with endless white sand
The General Department of Natural Disaster Prevention and Control conducted surveys many times and recorded continuous deformation of the sand dunes, however the total area of the sand dunes changed little, at more than 13 hectares.
