Table 2 Best suited relationships between suspended sediment concentration (SSC) (y) and various band indices and band ratios/combinations (x) derived from the spectroradiometer SVC – 1024i.

From: Empirical modelling of suspended sediments using spectral data from spectroradiometer and sentinel-2 in Mula Dam Reservoir, Maharashtra, India

Band Index/ Ratio/ Combination (x)

Range of x

Equation

y = SSC (mg/L)

R2

NSMI

0.170 to 489

y = -130.52 × 2 + 380.14x − 51.756

0.50

M-NDSSI

-0.167 to 0.223

y = 418.34 × 2 − 340x + 74.628

0.60

R-NDDSI

0.006 to 0.566

y = 289.64 × 2 − 380.19x + 143.95

0.78

(Red + Green) / 2

0.997 to 5.427

y = -3.5201 × 2 + 47.165x − 22.315

0.67

(Red + Green + Red Edge 1) / 3

0.963 to 6.428

y = -3.9145 × 2 + 48.303x − 24.774

0.82

Green - Red Edge 1

1.024 to 6.078

y = -5.3835 × 2 + 60.241x − 39.716

0.71

(Green x Red Edge 1) / Red

1.078 to 8.714

y = -1.9781 × 2 + 33.124x − 15.289

0.86

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