Radar evidence of subglacial liquid water on Mars

doi:10.1126/science.aar7268

GSTDTAP > 地球科学

DOI	10.1126/science.aar7268
	Radar evidence of subglacial liquid water on Mars
	Orosei, R.1; Lauro, S. E.2; Pettinelli, E.2; Cicchetti, A.3; Coradini, M.4; Cosciotti, B.2; Di Paolo, F.1; Flamini, E.4; Mattei, E.3; Pajola, M.5; Soldovieri, F.6; Cartacci, M.3; Cassenti, F.7; Frigeri, A.3; Giuppi, S.3; Martufi, R.7; Masdea, A.8; Mitri, G.9; Nenna, C.10; Noschese, R.3; Restano, M.11; Seu, R.
	2018-08-03
发表期刊	SCIENCE
ISSN	0036-8075
EISSN	1095-9203
出版年	2018
卷号	361 期号:6401 页码:490-493
文章类型	Article
语种	英语
国家	Italy
英文摘要	The presence of liquid water at the base of the martian polar caps has long been suspected but not observed. We surveyed the Planum Australe region using the MARSIS (Mars Advanced Radar for Subsurface and Ionosphere Sounding) instrument, a low-frequency radar on the Mars Express spacecraft. Radar profiles collected between May 2012 and December 2015 contain evidence of liquid water trapped below the ice of the South Polar Layered Deposits. Anomalously bright subsurface reflections are evident within a well-defined, 20-kilometerwide zone centered at 193 degrees E, 81 degrees S, which is surrounded by much less reflective areas. Quantitative analysis of the radar signals shows that this bright feature has high relative dielectric permittivity (>15), matching that of water-bearing materials. We interpret this feature as a stable body of liquid water on Mars.
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:000440627300039
WOS关键词	ORBITER LASER ALTIMETER ; SUBSURFACE ; INVENTORY ; DENSITY
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/199293
专题	地球科学资源环境科学气候变化
作者单位	1.Ist Nazl Astrofis, Ist Radioastron, Via Piero Gobetti 101, I-40129 Bologna, Italy; 2.Univ Roma Tre, Dipartimento Matemat & Fis, Via Vasca Navale 84, I-00146 Rome, Italy; 3.Ist Nazl Astrofis, Ist Astrofis & Planetol Spaziali, Via Fosso Cavaliere 100, I-00133 Rome, Italy; 4.Agenzia Spaziale Italiana, Via Politecn, I-00133 Rome, Italy; 5.Ist Nazl Astrofis, Osservatorio Astron Padova, Vicolo Osservatorio 5, I-35122 Padua, Italy; 6.Ist Rilevamento Elettromagnet Ambiente, CNR, Via Diocleziano 328, I-80124 Naples, Italy; 7.Univ Roma La Sapienza, Dipartimento Ingn Informaz Elettron & Telecomunic, Via Eudossiana 18, I-00184 Rome, Italy; 8.EP Elettron Progetti, Via Traspontina 25, I-00040 Ariccia, RM, Italy; 9.Univ Gabriele dAnnunzio, Int Res Sch Planetary Sci, Viale Pindaro 42, I-65127 Pescara, Italy; 10.Danfoss Drives, Romstr 2,Via Roma 2, I-39014 Burgstall Postal, BZ, Italy; 11.Serco, ESA Ctr Earth Observat, Largo Galileo Galilei 1, I-00044 Frascati, RM, Italy
推荐引用方式 GB/T 7714	Orosei, R.,Lauro, S. E.,Pettinelli, E.,et al. Radar evidence of subglacial liquid water on Mars[J]. SCIENCE,2018,361(6401):490-493.
APA	Orosei, R..,Lauro, S. E..,Pettinelli, E..,Cicchetti, A..,Coradini, M..,...&Seu, R..(2018).Radar evidence of subglacial liquid water on Mars.SCIENCE,361(6401),490-493.
MLA	Orosei, R.,et al."Radar evidence of subglacial liquid water on Mars".SCIENCE 361.6401(2018):490-493.