Putting science
at the heart of development
Definitions
Below is a directory of terms used in discussions about remote sensing for natural disasters. Most of the terms have been reproduced from the Canada Centre for Remote Sensing and the UN Department of Humanitarian Affairs.
Satellite remote sensing data can provide crucial information for managing natural disasters. How can developing countries access and make use of these data? And what must policymakers do to prepare?
A
Aftershock
A small earthquake that follows the main shock and originates close to its focus. Aftershocks generally decrease in number and magnitude over time.
Avalanche
The rapid and sudden sliding and flow of masses of mixtures of snow, ice and rock material.
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