Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1126/science.aat0738 |
A surface gravity traverse on Mars indicates low bedrock density at Gale crater | |
Lewis, Kevin W.1; Peters, Stephen2; Gonter, Kurt2; Morrison, Shaunna3; Schmerr, Nicholas4; Vasavada, Ashwin R.2; Gabriel, Travis5 | |
2019-02-01 | |
发表期刊 | SCIENCE |
ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2019 |
卷号 | 363期号:6426页码:535-+ |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Gravimetry, the precise measurement of gravitational fields, can be used to probe the internal structure of Earth and other planets. The Curiosity rover on Mars carries accelerometers normally used for navigation and attitude determination. We have recalibrated them to isolate the signature of the changing gravitational acceleration as the rover climbs through Gale crater. The subsurface rock density is inferred from the measured decrease in gravitational field strength with elevation. The density of the sedimentary rocks in Gale crater is 1680 +/- 180 kilograms per cubic meter. This value is lower than expected, indicating a high porosity and constraining maximum burial depths of the rocks over their history. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000457409400051 |
WOS关键词 | PHYSICAL-PROPERTIES ; EARTH ; FIELD ; CONSTRAINTS ; COMPACTION ; EVOLUTION ; ROCKS ; MOUND ; MOON |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/200670 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Johns Hopkins Univ, Dept Earth & Planetary Sci, Baltimore, MD 21218 USA; 2.CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA; 3.Carnegie Inst, Geophys Lab, Washington, DC 20015 USA; 4.Univ Maryland, Dept Geol, College Pk, MD 20742 USA; 5.Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85281 USA |
推荐引用方式 GB/T 7714 | Lewis, Kevin W.,Peters, Stephen,Gonter, Kurt,et al. A surface gravity traverse on Mars indicates low bedrock density at Gale crater[J]. SCIENCE,2019,363(6426):535-+. |
APA | Lewis, Kevin W..,Peters, Stephen.,Gonter, Kurt.,Morrison, Shaunna.,Schmerr, Nicholas.,...&Gabriel, Travis.(2019).A surface gravity traverse on Mars indicates low bedrock density at Gale crater.SCIENCE,363(6426),535-+. |
MLA | Lewis, Kevin W.,et al."A surface gravity traverse on Mars indicates low bedrock density at Gale crater".SCIENCE 363.6426(2019):535-+. |
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