Spatial Analysis

The spatial analysis category looks at data manipulation techniques in GIS.


Spatial Analysis

Retreat of the Helheim Glacier between 2001 and 2005. Images from Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASA’s Terra satellite.Retreat of the Helheim Glacier between 2001 and 2005. Images from Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASA’s Terra satellite.

Creating a Time Series Visualization of Two Decades of Changes in a Glacier

NASA has created a time series visualization of Greenland’s Helheim Glacier using 20 years of data from radar, lasers, and high-resolution cameras.

Spatial Analysis

How Geospatial Technologies Are Being Used to Study Light Pollution

Light pollution is considered to be artificial or anthropogenic introduction of light in what would normally be a night setting. Light pollution has grown significantly throughout the twentieth century as cheap, constant light became more possible in urban areas. However, light pollution has the potential to negatively affect our health, […]

Spatial Analysis

The new Firelight Detection Algorithm (FILDA) detects the start of a fire 11 hours earlier than the standard algorithm, Active Fire Application Related Product (AFARP). Maps: Joshua Stevens, using data from Polivka, T. N., et al. (2016).The new Firelight Detection Algorithm (FILDA) detects the start of a fire 11 hours earlier than the standard algorithm, Active Fire Application Related Product (AFARP). Maps: Joshua Stevens, using data from Polivka, T. N., et al. (2016).

A New Algorithm to Find Wildfires When It’s Cloudy

New technology called the Firelight Detection Algorithm, or FILDA, can help detect wildfires at night even when the skies are cloudy.