Encyclopedia of Planetary Landforms

2015 Edition
| Editors: Henrik Hargitai, Ákos Kereszturi

Splotch (Radar)

Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-3134-3_541

Definition

Diffuse, quasi-circular region distinguished from its surroundings by radar backscatter cross section (bright, dark, or a combination of bright and dark annuli).

Synonyms

Atmospheric blast zone (interpretation);  Radar-dark spot;  Radar-bright spot; Radar shadow

Description

Splotches are radar-dark or radar-light diffuse, roughly circular regions on the surface of a crusty planetary body (Fig. 1). They are distinguished from their surroundings by radar backscatter cross section (radar albedo). The bright parts are not nearly as bright as the blocky continuous crater ejecta, and the dark parts are not entirely featureless.
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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.Konkoly Thege Miklos Astronomical Institute, Research Centre for Astronomy and Earth SciencesBudapestHungary