Dataset: radar elevation

The code below is an example of an elevation dataset. It pulls the digital elevation model (DEM) dataset, calulates the slope for a region around Rio de Janeiro, then highlights all areas on the map with a slope greater than 15 degrees.

// Load the necessary dataset
var dem = ee.Image("USGS/SRTMGL1_003"); // Digital Elevation Model (DEM)

// Define the study area (Rio de Janeiro)
var rio = ee.Geometry.Rectangle(-43.86, -23.15, -43.12, -22.72);

// Calculate the slope from the DEM
var slope = ee.Terrain.slope(dem).clip(rio);

// Threshold the slope to identify areas with steep slopes (>15 degrees)
var steep_slope = slope.gt(15);

Map.centerObject(rio, 9);
Map.addLayer(steep_slope, {min: 0, max: 1, palette: ['white', 'brown']}, 'Steep Slope');