Are striations on PHOBOS evidence for tidal stress

Details Are striations on PHOBOS evidence for tidal stress Are striations on PHOBOS evidence for tidal stress

Aug 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977natur.268..421s&link_type=abstract

Nature, vol. 268, Aug. 4, 1977, p. 421, 422.

Physics

10

Gravitational Effects, Phobos, Planetary Surfaces, Striation, Surface Roughness, Craters, Mars (Planet), Orbit Calculation, Planetary Gravitation, Tides, Viking Orbiter Spacecraft

Scientific paper

A series of striations or grooves over a great part of the surface of Phobos, the inner satellite of Mars, can be observed on Viking orbiter photographs. It is suggested that some of these features are related to a readjustment of the satellite's figure with increasing tidal stress as the orbit evolves inwards under the action of tidal friction. If the width of the grooves is in fact due to tidal readjustments of the figure of Phobos, then the older craters should be systematically deformed from their initial nearly circular shapes.

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