Coronas and Escape from the Martian Atmosphere, Ancient and Modern

简福克斯纽约州立大学，石溪冠冕和火星大气层的逃逸，古代和现代火星大气层的演变受到许多过程的影响，包括从行星内部放出气体，彗星和流星的撞击，大气-表面的相互作用，以及挥发物逃逸到太空。对挥发物不可逆转地流失到太空的过程进行量化，对于重建火星环境的演变至关重要。简·福克斯博士和她的同事们将模拟从现在到大约38亿年前最近的猛烈轰炸结束期间，氧、碳和氮的光化学和溅射逸出通量作为时间函数的模型。这将使研究人员能够预测火星大气中氮、水和二氧化碳的历史。

Jane FoxState University of New York, Stony BrookCoronas and Escape from the Martian Atmosphere, Ancient and ModernThe evolution of the Martian atmosphere is influenced by a number of processes, including outgassing from the planetary interior, impacts of comets and meteors, atmosphere-surface interactions, and by escape of volatiles to space. A quantification of the processes by which volatiles are lost irreversibly to space is crucial to a reconstruction of the evolution of the Martian environment. Dr. Jane Fox and her colleagues will model the photochemical and sputtering escape fluxes of oxygen, carbon, and nitrogen simultaneously as a function of time from the present to the end of late heavy bombardment, about 3.8 billion years ago. This will allow the investigators to predict the history of nitrogen, water, and carbon dioxide in the Martian atmosphere.