Summer evolution of the north polar cap of Mars as observed by OMEGA/Mars express

被引：127

作者：

Langevin, Y ^{[1
]}

Poulet, F

Bibring, JP

Schmitt, B

Douté, S

Gondet, B

机构：

[1] Univ Paris 11, CNRS, Inst Astrophys Spatiale, F-91405 Orsay, France

[2] Univ Grenoble 1, CNRS, Lab Planetol Grenoble, F-38400 Grenoble, France

来源：

SCIENCE | 2005年 / 307卷 / 5715期

关键词：

D O I：

10.1126/science.1109438

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The Observatoire pour la Mineralogie, l'Eau, les Gtaces, et l'Activite (OMEGA) visible-infrared imaging spectrometer extensively observed regions of Mars with latitudes above 70degreesN in late 2004 (heliocentric longitude from L-s 93degrees to L-s 127degrees). The extent of water ice at the surface and the size of ice grains were monitored as a function of time. Bright, small-grained frost, which initially covered a large fraction of the polar cap, waned in favor of large-grained ice. In outlying regions, dominated by large-grained ice, the albedo increased over the period. Evaluating the dust content was mode[ dependent. However, contamination of ice by dust was low.

引用

页码：1581 / 1584

页数：4

共 16 条

[11] Recent ice-rich deposits formed at high latitudes on Mars by sublimation of unstable equatorial ice during low obliquity [J].

Levrard, B ;

Forget, F ;

Montmessin, F ;

Laskar, J .

NATURE, 2004, 431 (7012) :1072-1075

[12] Mars Global Surveyor Mars Orbiter Camera: Interplanetary cruise through primary mission [J].

Malin, MC ;

Edgett, KS .

JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS, 2001, 106 (E10) :23429-23570

[13] On the orbital forcing of Martian water and CO2 cycles:: A general circulation model study with simplified volatile schemes -: art. no. 5062 [J].

Mischna, MA ;

Richardson, MI ;

Wilson, RJ ;

McCleese, DJ .

JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS, 2003, 108 (E6)

[14] Mapping the Martian polar ice caps: Applications of terrestrial optical remote sensing methods [J].

Nolin, AW .

JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS, 1998, 103 (E11) :25851-25864

[15] Comparison between the Shkuratov and Hapke scattering theories for solid planetary surfaces: Application to the surface composition of two centaurs [J].

Poulet, F ;

Cuzzi, JN ;

Cruikshank, DP ;

Roush, T ;

Dalle Ore, CM .

ICARUS, 2002, 160 (02) :313-324

[16] A model of spectral albedo of particulate surfaces: Implications for optical properties of the moon [J].

Shkuratov, Y ;

Starukhina, L ;

Hoffmann, H ;

Arnold, G .

ICARUS, 1999, 137 (02) :235-246

← 1 2 →