Publication Date:
1999-12-11
Description:
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.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Head, J W 3rd -- Hiesinger, H -- Ivanov, M A -- Kreslavsky, M A -- Pratt, S -- Thomson, B J -- New York, N.Y. -- Science. 1999 Dec 10;286(5447):2134-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Geological Sciences, Brown University, Providence, RI 02912, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10591640" target="_blank"〉PubMed〈/a〉
Keywords:
*Evolution, Planetary
;
*Extraterrestrial Environment
;
*Mars
;
Oceans and Seas
;
*Water
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
