The
primary results of monitoring of present aggradation and degradation in
Sông Cửu Long plain during 2013-2014 stage
Đỗ Văn Lĩnh, Nguvễn Đan Vũ, Trần Văn Toàn, Trần
Văn Nam, Trịnh Minh Phuông, Ma Công Cọ
Sông Cửu Long
Plain is characteristed by various aggradation and degradation in 20 modem
geodynamic-structure blocks (CTĐĐL).
The average aggradation value in 2013 year is
0.22 mm/yr, is 0.19 mm/yr in 2014 year. The mean aggradation thickness of the
studied is 0.2 mm/yr, average rate of degradation is
-2.7 mm during 2013-2014 year stage. The volume of suspended sediment aggrdated
on ĐBSCL is 8.25 cubic metre milions (CMM) in 2013 year, the
2014 year is 7,13 CMM, the average of two years to be 7.5 CMM. Prediction trend
of the height of aggradation to elevation of Sông Cửu Long Plain surface
will be 7 mm to 2050 year time and 14 mm to 2100 year time. The average rate
aggrading to elevation of Sông Cửu Long Plain surface will be smaller from 8 to 9 times
in comparison with the rate of today rise sea level as 1.6-1.8 mm/yeas (IPCC). Results is important signification to correct the Digital
Elevation Model in order to perfect the climate change scenario, rise sea level
as well as proposal adaptability solutions in ĐBSCL.
Người biên tập: TS. Nguyễn Thành Vạn.