In:
Science, American Association for the Advancement of Science (AAAS), Vol. 241, No. 4871 ( 1988-09-09), p. 1322-1325
Abstract:
Voyager images of the uranian satellites Ariel and Miranda show flow features with morphologies indicating that ice has been extruded to the satellites' surfaces in the solid state. These images provide the first observational evidence for solid-state ice volcanism in the solar system. Topographic profiles have been measured across a number of flow features on Ariel. With a simple model of extrusion, spreading, and cooling of a viscous flow, the initial viscosity of the flow material is found to have been no more than about 10 16 poise, far lower than expected for H 2 O ice at the ambient surface temperatures in the uranian system. Sharply reduced viscosities may have resulted from incorporation of ices like NH 3 or CH 4 in the uranian satellites.
Type of Medium:
Online Resource
ISSN:
0036-8075
,
1095-9203
DOI:
10.1126/science.241.4871.1322
Language:
English
Publisher:
American Association for the Advancement of Science (AAAS)
Publication Date:
1988
detail.hit.zdb_id:
128410-1
detail.hit.zdb_id:
2066996-3
SSG:
11
