Possible ancient oceans on Mars: Evidence from Mars Orbiter Laser Altimeter data

被引：300

作者：

Head, JW ^{[1
]}

Hiesinger, H

Ivanov, MA

Kreslavsky, MA

Pratt, S

Thomson, BJ

机构：

[1] Brown Univ, Dept Geol Sci, Providence, RI 02912 USA

[2] Russian Acad Sci, Vernadsky Inst, Moscow 117975, Russia

[3] Kharkov State Univ, Kharkov Astron Observ, UA-310022 Kharkov, Ukraine

来源：

SCIENCE | 1999年 / 286卷 / 5447期

关键词：

D O I：

10.1126/science.286.5447.2134

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：

High-resolution altimetric data define the detailed topography of the northern lowlands of Mars, and a range of data is consistent with the hypothesis that a Lowland-encircling geologic contact represents the ancient shoreline of a Large standing body of water present in middle Mars history. The contact altitude is close to an equipotential Line, the topography is smoother at all scales below the contact than above it, the volume enclosed by this contact is within the range of estimates of available water on Mars, and a series of extensive terraces parallel the contact in many places.

引用

页码：2134 / 2137

页数：4