A new model of the crustal magnetic field of Mars using MGS and MAVEN [0.03%]
基于MGS和MAVEN火星探测数据的火星岩石磁层新模式研究
Benoit Langlais,Erwan Thébault,Aymeric Houliez et al.
Benoit Langlais et al.
While devoid of an active magnetic field today, Mars possesses a remanent magnetic field which may reach several thousand nT locally. The exact origin, and the events which have shaped the crustal magnetization remain largely enigmatic. Thr...
First-Principles Diffusivity Ratios for Atmospheric Isotope Fractionation on Mars and Titan [0.03%]
火星和泰坦大气同位素分馏的第一原理扩散率比例
Robert Hellmann,Allan H Harvey
Robert Hellmann
Recent work used the kinetic theory of molecular gases, along with state-of-the-art intermolecular potentials, to calculate from first principles the diffusivity ratios necessary for modeling kinetic fractionation of water isotopes in air. ...
Improving Constraints on Planetary Interiors With PPs Receiver Functions [0.03%]
利用PP接收函数改善对行星内部结构的约束条件
D Kim,V Lekić,J C E Irving et al.
D Kim et al.
Seismological constraints obtained from receiver function (RF) analysis provide important information about the crust and mantle structure. Here, we explore the utility of the free-surface multiple of the P-wave (PP) and the corresponding c...
Characteristics, Origins, and Biosignature Preservation Potential of Carbonate-Bearing Rocks Within and Outside of Jezero Crater [0.03%]
杰泽罗 crater内外含碳酸盐岩石的特点、来源及生物特征保存潜力
J D Tarnas,K M Stack,M Parente et al.
J D Tarnas et al.
Carbonate minerals have been detected in Jezero crater, an ancient lake basin that is the landing site of the Mars 2020 Perseverance rover, and within the regional olivine-bearing (ROB) unit in the Nili Fossae region surrounding this crater...
Eva L Scheller,Carl Swindle,John Grotzinger et al.
Eva L Scheller et al.
Magnesium carbonates have been identified within the landing site of the Perseverance rover mission. This study reviews terrestrial analog environments and textural, mineral assemblage, isotopic, and elemental analyses that have been applie...
Composition, Stratigraphy, and Geological History of the Noachian Basement Surrounding the Isidis Impact Basin [0.03%]
伊西斯撞击坑周围诺亚纪地表下物质的组成、层序与地质演化历史
Eva L Scheller,Bethany L Ehlmann
Eva L Scheller
The western part of the Isidis basin structure hosts a well-characterized Early Noachian to Amazonian stratigraphy. The Noachian Basement comprises its oldest exposed rocks (Early to Mid-Noachian) and was previously considered a single low-...
E J Davies,M S Duncan,S Root et al.
E J Davies et al.
The physical processes during planet formation span a large range of pressures and temperatures. Giant impacts, such as the one that formed the Moon, achieve peak pressures of 100s of GPa. The peak shock states generate sufficient entropy s...
Distinct Mineralogy and Age of Individual Lava Flows in Atla Regio, Venus Derived From Magellan Radar Emissivity [0.03%]
基于麦哲伦号雷达发射率的维纳斯阿特拉利亚地区单个熔岩流的独特矿物学和年龄属性研究
J Brossier,M S Gilmore,K Toner et al.
J Brossier et al.
NASA's Magellan mission revealed that many Venus highlands exhibit low radar emissivity values at higher altitudes. This phenomenon is ascribed to the presence of minerals having high dielectric constants, produced or stabilized by temperat...
Parvathy Prem,Dana M Hurley,David B Goldstein et al.
Parvathy Prem et al.
Understanding how spacecraft alter planetary environments can offer important insights into key physical processes, as well as being critical to planning mission operations and observations. In this context, it is important to recognize tha...
Vertically Resolved Magma Ocean-Protoatmosphere Evolution: H2, H2O, CO2, CH4, CO, O2, and N2 as Primary Absorbers [0.03%]
垂直解析火海-原大气层演化：H2、H2O、CO2、CH4、CO、O2和N2作为主要吸收物质
Tim Lichtenberg,Dan J Bower,Mark Hammond et al.
Tim Lichtenberg et al.
The earliest atmospheres of rocky planets originate from extensive volatile release during magma ocean epochs that occur during assembly of the planet. These establish the initial distribution of the major volatile elements between differen...