Encyclopedia of Planetary Landforms

2015 Edition
| Editors: Henrik Hargitai, Ákos Kereszturi

Cycloid (Europa)

Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-3134-3_95

Definition

Chains of arcuate segments linked by cusps (Kattenhorn and Hurford 2009).

Related Terms

Cycloidal ridge, Cycloidal crack, Cycloidal band, Flexus

Description

A cycloid is a series of linked arcuate segments. Cycloids have been observed on Europa at both global and regional scales and with a variety of morphologies. Some appear to be hairline fractures, while others have well-developed flanking ridges. Several wide bands have been identified with the characteristic linked segment morphology of cycloids, and many of these also exhibit strike-slip offsets (Kattenhorn and Hurford 2009, and references therein).

Morphometry

Widths similar to other cracks, ridges, and bands. Ridges consisting of multiple segments up to >1,000 km long (Fig. 1).
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References

  1. Bassis JN, Coleman R, Fricker HA, Minster JB (2005) Episodic propagation of a rift on the Amery Ice Shelf, East Antarctica. Geophys Res Lett 32. doi:10.1029/2004GL022048Google Scholar
  2. Greenberg R, Geissler P, Hoppa G, Tufts BR, Durda DD, Pappalardo R, Head JW, Greeley R, Sullivan R, Carr MH (1998) Tectonic processes on Europa – tidal stresses, mechanical response, and visible features. Icarus 135:64–78CrossRefGoogle Scholar
  3. Groenleer JM, Kattenhorn SA (2008) Cycloid crack sequences on Europa: relationship to stress history and constraints on growth mechanics based on cusp angles. Icarus 193:158–181CrossRefGoogle Scholar
  4. Hoppa GV, Tufts BR, Greenberg R, Geissler PE (1999) Formation of cycloidal features on Europa. Science 285:1899–1902CrossRefGoogle Scholar
  5. Hoppa GV, Randall TB, Greenberg R, Hurford TA, O’Brien DP, Geissler PE (2001) Europa’s rate of rotation derived from the tectonic sequence in the Astypalaea region. Icarus 153:208–213CrossRefGoogle Scholar
  6. Hurford TA, Sarid AR, Greenberg R (2007) Cycloidal cracks on Europa: improved modeling and non-synchronous rotation implications. Icarus 186:218–233CrossRefGoogle Scholar
  7. Kattenhorn SA, Hurford TA (2009) Tectonics of Europa. In: Pappalardo RT, McKinnon WB, Khurana K (eds) Europa. University of Arizona Press, Tucson, pp 199–236Google Scholar
  8. Lee S, Pappalardo RT, Makris NC (2005) Mechanics of tidally driven fractures in Europa’s ice shell. Icarus 177:367–379CrossRefGoogle Scholar
  9. Lee S, Pappalardo RT, Makris N (2007) Reply to “Comment on ‘Mechanics of tidally driven fractures in Europa’s ice shell’”. Icarus 189:598–599CrossRefGoogle Scholar
  10. Marshall ST, Kattenhorn SA (2005) A revised model for cycloid growth mechanics on Europa: evidence from surface morphologies and geometries. Icarus 177:341–366CrossRefGoogle Scholar
  11. Nimmo F (2004) Stresses generated in cooling viscoelastic ice shells: application to Europa. J Geophys Res – Planets 109. doi:10.1029/2004JE002347Google Scholar
  12. Qin R, Buck WR, Germanovich L (2007) Comment on “Mechanics of tidally driven fractures in Europa’s ice shell” by S. Lee, R. T. Papplardo, and N. C. Makris (Icarus, 177: 367–379, 2005). Icarus. doi:10.1016/j.icarus.2007.01.013Google Scholar
  13. Rhoden AR, Militzer B, Huff EM, Hurford TA, Manga M, Richards MA (2010) Constraints on Europa’s rotational dynamics from modeling of tidally-driven fractures. Icarus 210:770–784CrossRefGoogle Scholar
  14. Schultz RA, Hauber E, Kattenhorn SA, Okubo CH, Watters TR (2010) Interpretation and analysis of planetary structures. J Struct Geol 32:855–875CrossRefGoogle Scholar
  15. Walker AS (1989) The nexus of flexus. Lunar Planet Sci Conf XX:1168–1169, HoustonGoogle Scholar
  16. Zahnle K, Schenk P, Levison H, Dones L (2003) Cratering rates in the outer Solar System. Icarus 163:263–289CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.Johns Hopkins University, Applied Physics LaboratoryLaurelUSA