Landsat 8/9 NDSI
Normalized Difference Salinity Index for Landsat 8/9
Geology Satellite Provider: USGS/NASA
Applications
Soil Salinity Detection
Soil Quality Assessment
Agricultural Land Management
Desertification Monitoring
Irrigation Impact Assessment
Quick Stats
Category: geology
Sensor: Landsat 8/9
Provider: USGS/NASA
Bands Used: 2
Description
Soil salinity detection index using shortwave infrared bands. Effective for identifying salt-affected soils and monitoring soil degradation in arid regions.
Formulas
General Formula
Landsat 8/9 Specific Formula
(B6 - B7) / (B6 + B7)Spectral Band Visualization
Band Wavelengths
SWIR1: 1600-1700 nm
SWIR2: 2145-2185 nm
Code Examples
ndsi.py
References
Khan et al. (2005)