Mars in the Current Glacial - Interglacial Cycle : Exploring an Anomalous Pe - Riod in Mars Climate History
نویسندگان
چکیده
amplitude line is Earth obliquity variations. MARS IN THE CURRENT GLACIAL-INTERGLACIAL CYCLE: EXPLORING AN ANOMALOUS PERIOD IN MARS CLIMATE HISTORY. J.W. Head, J. F. Mustard, M.A. Kreslavsky, R.E. Milliken, D.R. Marchant, F. Forget, S.C. Schon, J.S. Levy. Brown Univ., Providence RI 02912 ([email protected]), UCSC, Santa Cruz CA 95064, Univ. Notre Dame, Notre Dame IN 46556, Boston Univ., Boston MA 02215, LMD, CNRS/UPMC/IPSL, Paris, France, Portland State Univ., Portland OR 97207.
منابع مشابه
Water as a Clue to the Evolution of the Atmosphere and Climate History of Mars: Evidence for Circum-polar/non-polar Ice Deposits, Running Water and Standing Bodies of Water in the History of Mars
I. Introduction: Water is a key guide to understanding the history of the atmosphere and climate of Mars [1]. Geological evidence that illustrates the state of water (solid or liquid) and its distribution at various stages in the history of Mars is essential in documenting this history. In this analysis, evidence for the recent climate record in the polar cap is assessed, and non-polar ice depo...
متن کاملImplications for the Abundance of Water on Early Mars as Evidenced by the Presence of Secondary Minerals in Martian Meteorite
Evidence for Water on Early Mars: Although numerous lines of evidence suggest that Mars must have been a "wet" planet at some time in its past, there is no universal agreement on the volume of hydrous activity, its style, or the characteristics of the corresponding climates through time. Morphological evidence for the presence of surface water on Mars is abundant [1-3] as is evidence for the ex...
متن کاملQuasi-100 ky glacial-interglacial cycles triggered by subglacial burial carbon release
A mechanism is proposed in which climate, carbon cycle and icesheets interact with each other to produce a feedback that can lead to quasi-100 ky glacial-interglacial cycles. A central process is the burial and preservation of organic carbon by icesheets which contributes to the observed glacial-interglacial CO2 change (the glacial burial hypothesis, Zeng, 2003). Allowing carbon cycle to intera...
متن کاملExtensive valley glacier deposits in the northern mid-latitudes of Mars: Evidence for Late Amazonian obliquity-driven climate change
Understanding spin orbital parameter-driven climate change on Mars prior to ~ 20 Ma ago requires geological evidence because numerical solutions for that period are chaotic and non-unique. We show geological evidence that lineated valley fill at low midlatitudes in the northern hemisphere of Mars (~ 37.58 N) originated through regional snow and ice accumulation and underwent glacial-like flow. ...
متن کاملEnhanced erosion rates on Mars during Amazonian glaciation
Keyword: Mars, surface Mars, climate Geological processes Observations of Mars from the surface and from orbit suggest that erosion rates over the last 3 Gyr (the Amazonian) have been as slow as 10 5 m/Myr and have been dominated by aeolian processes, while ancient (Noachian) erosion rates may have been orders of magnitude higher due to impact bombardment and fluvial activity. Amazonian-aged gl...
متن کامل