منابع مشابه
Climate and the Tropical Oceans*
An attempt is made to determine the role of the ocean in establishing the mean tropical climate and its sensitivity to radiative perturbations. A simple two-box energy balance model is developed that includes ocean heat transports as an interactive component of the tropical climate system. It is found that changes in the zonal mean ocean heat transport can have a considerable affect on the mean...
متن کاملThermal studies of Martian channels and valleys using Termoskan data
The Tennoskan instrument on board the Phobos '88 spacecraft acquired the highest spatial resolution thermal infrared emission data ever obtained for Mars. Included in the thermal images are 2 km/pixel, midday observations of several major channel and valley systems including significant portions of Shalbatana, Ravi, A1-Qahira, and Ma'adim Valles, the channel connecting Vailes Marineris with Hyd...
متن کاملThe Formation of Martian River Valleys by Impacts
We explore the role of large impacts in creating the Martian valley networks. Recent dating shows that some large impact basins are contemporaneous with the valley networks. The mass deposited (and volatiles released) by impacts is large, and comparable with the mass from the Tharsis volcanic construct. Steam atmospheres formed after large impacts can produce more than 600 m of rainfall, follow...
متن کاملDating martian climate change
1 Geological evidence indicates that low-latitude polygonally-patterned grounds on Mars, 2 generally thought to be the product of flood volcanism, are periglacial in nature and record a 3 complex signal of changing climate. By studying the martian surface stratigraphically (in terms 4 of the geometrical relations between surface landforms and the substrate) rather than geneti5 cally (by form an...
متن کاملA Climate Database for the Martian Atmosphere
A new engineering model of the environment of Mars is outlined. The model is based on a database of statistics computed from a state-of-the-art Global Circulation Model of the martian atmosphere which represents our best knowledge of the atmosphere to date. A novel scheme for the representation of large scale variability in the engineering model, in terms of an optimal set of basis functions de...
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ژورنال
عنوان ژورنال: Astronomy and Geophysics
سال: 2000
ISSN: 1366-8781,1468-4004
DOI: 10.1046/j.1468-4004.2000.00320.x