Time variation of martian regional contrasts |
| |
Authors: | Don T. Thompson |
| |
Affiliation: | Planetary Research Center, Lowell Observatory, Flagstaff, Arizona 86001, USA |
| |
Abstract: | Observations of contrast changes in blue light on Mars in 1969 and 1971 are presented. Seasonal effects evidently can be evaluated from these data, although nonseasonal effects are also present. A diurnal variation is noted for certain features during both apparitions. This variation cannot be fully accounted for without considering meteorological effects. An example of a contrast reversal in ultraviolet light is presented. The suggestion is made that during the Martian season covered herein, variability of the bright areas controlled the apparent contrasts observed. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|