In modern astronomy the eccentricity of a planetary or cometary orbit is the ratio of the focal distance of the orbit's center to the orbit's semimajor axis. This usage is the end-stage of a development that began with the practice in Greek astronomy of using eccentric circles (from ε...
Lahaye - 《European Journal of Physics》 被引量: 0发表: 2012年 LXIII. A mode of calculating a limit to the direct effect of great eccentricity of the earth's orbit on terrestrial temperatures, showing the inadequacy of... Dalbergiaissoooxb. (Shisham) isonsideredultipurposereepecies dueo it...
Intensive research has provided a comprehensive understanding of the climatic and environmental conditions during MIS 11, but less is known about climate changes during MIS 19 on terrestrial records. Continuous, high-resolution and quantitative/semi-quantitative paleoclimatic records of MIS 19 have been ...
On detecting terrestrial planets with timing of giant planet transits 1 resonance with a three-dimensional period transiting planet (e.g. HD 209458b) would cause timing variations of the order of 3 min, which would be ... E Agol,J Steffen,R Sari,... - 《Monthly Notices of the Royal As...
Repeated global reorganizations of carbon cycling and biotic, oceanic and terrestrial processes occurred during the Early Eocene, and appear to have been paced by cyclic variations in the eccentricity of the Earth's orbit. The phase relationship(s) between insolation variation, terrestrial paleoclimate...
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Water-rich extrasolar terrestrial planets with the capacity to host life might be at risk of falling into similar snowball states. Here, we show that if a terrestrial planet has a giant companion on a sufficiently eccentric orbit, it can undergo Milankovitch-like oscillations of eccentricity of ...
Periodic shifts in Earth's orbit alter incoming solar radiation and drive Quaternary climate cycles. However, unambiguous detection of these orbitally driven climatic changes in records of terrestrial sedimentation and pedogenesis remains poorly defined, limiting our understanding of climate change-landscape ...
It was found that the Lewis acid sites on the HZSM-5 surface played an important role in the conversion of methanol to hydrocarbons. During the catalysis process, methanol was adsorbed on the Lewis acid sites through chemical bond which was stronger than the interaction between methanol and the...
TERRESTRIAL PLANETSEXTRASOLAR PLANETSTUMBLING ASTEROIDSThe pattern of insolation on an extrasolar planet has profound implications for its climate and habitability. A planet's insolation regime depends on its orbital eccentricity, the obliquity of its spin axis, its rotation rate, and its longitude of ...