Sections | 1975–1988 | 1988–1994 | 1994–2005 | 2005–2015 | 1975–2015 | |||||
---|---|---|---|---|---|---|---|---|---|---|
Left bank | Right bank | Left bank | Right bank | Left bank | Right bank | Left bank | Right bank | Left bank | Right bank | |
A | +1.2 | +0.1 | –1.2 | −2.9 | −0.2 | −3.7 | +0.1 | −0.3 | −0.15 | −6.80 |
B | +0.2 | −0.1 | −0.3 | −0.4 | −0.2 | +1.5 | −0.1 | +0.3 | +0.32 | +1.35 |
C | −1.3 | +0.3 | −1.1 | +3.3 | +1.0 | −2.2 | −1.3 | +0.5 | −2.70 | +1.90 |
D | −2.7 | −1.2 | +0.1 | −0.6 | −0.3 | −3.0 | −0.7 | +1.7 | +3.68 | −3.10 |
E | +3.1 | −3.4 | −3.4 | −0.1 | +2.9 | +2.5 | −2.5 | −0.7 | +0.10 | −1.61 |
F | +2.0 | −2.1 | +3.9 | −4.4 | −6.0 | −3.7 | +0.3 | −4.4 | +0.20 | −14.63 |
G | +0.1 | −1.2 | −0.1 | −0.6 | −4.1 | −0.7 | −0.2 | +3.5 | −4.30 | +1.00 |
H | +0.7 | −1.3 | −0.1 | +0.8 | −1.2 | −1.4 | +0.7 | ±0.7 | +0.10 | −2.60 |
I | −2.2 | −0.8 | −1.1 | –0.6 | +3.6 | −0.8 | +2.0 | −0.7 | +2.30 | −2.39 |
J | −2.0 | −1.7 | −1.1 | −0.9 | +0.2 | −0.1 | +0.1 | +1.2 | −2.85 | −1.47 |
K | −0.3 | −3.8 | +1.5 | +1.5 | −1.5 | +3.5 | −0.1 | +1.0 | −0.31 | +2.20 |
Sensor | Band numbers | Date of acquisition | Spatial resolution [m] |
---|---|---|---|
MSS | 1,2,3 | March 10, 1975 | 60 |
TM | 1,2,3,4 | November 01, 1988 | 30 |
TM | 1,2,3,4 | October 10, 1994 | 30 |
TM | 1,2,3,4 | January 16, 2005 | 30 |
OLI and TIRS | 1,2,3,4,5 | January 28, 2015 | 30 |
Duration | Location (Padma River) | Erosion | Accretion | ||
---|---|---|---|---|---|
Total (ha) | Rate (ha a−1) | Total (ha) | Rate (ha a−1) | ||
1975–1988 (13 years) | Left bank | 6,258.03 | 481.38 | 10,937.18 | 841.32 |
Right bank | 1,482.38 | 114.02 | 15,278.44 | 1,175.26 | |
Total reach | 7,740.41 | 595.41 | 26,215.62 | 2,016.58 | |
1988–1994 (6 years) | Left bank | 3,680.80 | 613.46 | 7,818.39 | 1,303.06 |
Right bank | 5,711.33 | 951.88 | 10,388.79 | 1,731.46 | |
Total reach | 9,392.13 | 1,565.35 | 18,207.18 | 3,034.53 | |
1994–2005 (11 years) | Left bank | 11,223.93 | 1,020.35 | 5,678.95 | 516.26 |
Right bank | 15,606.18 | 1,418.74 | 11,526.76 | 1,047.88 | |
Total reach | 26,830.11 | 2,439.10 | 17,205.71 | 1,564.15 | |
2005–2015 (10 years) | Left bank | 3,224.44 | 322.44 | 11,602.08 | 1,160.20 |
Right bank | 2,763.86 | 276.38 | 10,102.62 | 1,010.26 | |
Total reach | 5,988.30 | 598.83 | 21,704.70 | 2,170.47 | |
1975–2015 (40 years) | Total (Left bank) | 24,387.20 | 609.68 | 36,036.60 | 900.92 |
Total (Right bank) | 25,563.75 | 639.09 | 47,296.61 | 1,182.42 | |
Total (Both bank) | 49,950.95 | 1,248.77 | 83,333.21 | 2,083.33 |