Encyclopedia of Planetary Landforms

2015 Edition
| Editors: Henrik Hargitai, Ákos Kereszturi

Radar-Bright Valley (Titan)

  • Ralf Jaumann
  • Mirjam Langhans
  • Alice Le Gall
Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-3134-3_123

Definition

A valley-like feature on Titan exhibiting high radar backscatter.

Category

Synonyms

Description

Fluvial valleys on Titan have diverse morphologies with subclasses as defined by arid but cold climatic conditions. Dry valleys with lengths <300 km and width <8 km are observed. They appear radar-bright on Cassini SAR images because they are not filled with liquid but with sediments that are probably centimetric or even larger in size in the brightest valleys. They are similar to terrestrial desert washes (wadis), which suggests formation by sudden, episodic, and strong flow events in dry climatic conditions, followed by long dry periods. Outflow events may be induced by precipitation or sapping. Compared to valleys within integrated dendritic networks, Titan’s dry valleys are generally shorter and broader (Porco et al. 2005...

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References

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.DLRInstitut für PlanetenforschungBerlinGermany
  2. 2.Earth’s Magnetic FieldGFZ German Research Centre for GeosciencesPotsdamGermany
  3. 3.LATMOS (Laboratoire Atmosphères, Milieux, Observations Spatiales), UVSQ (Université Versailles Saint-Quentin)ParisFrance