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Questions and Answers
What is geomorphometry?
What is geomorphometry?
- The science of measuring Earth's surface shapes and their effects on natural forces (correct)
- The discipline focused on the study of weather patterns and climate change
- The study of ecosystems and their interactions with the physical environment
- The science of mapping geographical features using satellite imagery
How is a Digital Elevation Model (DEM) defined?
How is a Digital Elevation Model (DEM) defined?
- The digital representation of land surface elevation with respect to any reference datum (correct)
- A software for simulating geological processes
- A type of satellite used for environmental monitoring
- A digital tool for measuring atmospheric conditions and air quality
What does a Digital Terrain Model (DTM) encompass?
What does a Digital Terrain Model (DTM) encompass?
- A three-dimensional representation of a terrain surface consisting of X, Y, Z coordinates stored in digital form (correct)
- A software for tracking wildlife migration patterns
- A tool for measuring soil properties and composition
- A type of radar system for detecting underground water sources
What is the relationship between DEM and DTM?
What is the relationship between DEM and DTM?
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What do Digital Surface Models (DSM) represent?
What do Digital Surface Models (DSM) represent?
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Study Notes
Geomorphometry
- Geomorphometry is the science of measuring and analyzing the shape of the Earth's surface.
Digital Elevation Model (DEM)
- A Digital Elevation Model (DEM) is a digital representation of the topographic surface of the Earth, describing the relief of the terrain.
- It defines the height of each point on the Earth's surface, creating a 3D model of the terrain.
Digital Terrain Model (DTM)
- A Digital Terrain Model (DTM) encompasses the terrain's natural features, such as valleys, hills, and ridges.
- It represents the bare-Earth model, excluding above-ground features like buildings and vegetation.
Relationship between DEM and DTM
- A DEM can be considered a broader term that includes both the DTM (bare-Earth model) and above-ground features.
- A DTM is a specific type of DEM that focuses on the natural terrain, excluding above-ground features.
Digital Surface Model (DSM)
- A Digital Surface Model (DSM) represents the topographic surface, including above-ground features like buildings, bridges, and trees.
- It provides a comprehensive model of the Earth's surface, including both natural and man-made features.
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