Browse Journal Highlights

Highlights include enriched and related content of notable journal articles presented on Eos org AGU org AGU On Demand and in AGU journals

Dawn finds possible ancient ocean remnants at Ceres

Press Release— Minerals containing water are widespread on Ceres, suggesting the dwarf planet may have had a global ocean in the past. What became of that ocean? Could Ceres still have liquid today? Two new studies from NASA’s Dawn mission shed light on these questions. In one study, the Dawn team found.... more

Model explores the long-term survival of Martian ice sheets

Editor’s Highlight—   This paper uses a numerical model of heat diffusion in the Martian subsurface to assess the survival time of mid-latitude excess ice sheets. The authors first calculated physical temperature for a three-layer stratigraphic model using numerical heat diffusion equation, and then.... more

Next Steps Forward in Understanding Martian Surface and Subsurface Chemistry

Commentary in Journal of Geophysical Research-Planets The presence of oxidants such as hydrogen peroxide (H2O2) and perchlorate (ClO4−), which have been detected on Mars, has significant implications for chemistry and astrobiology. These oxidants can increase the reactivity of the Martian soil, accelerate.... more

Understanding the mechanism of the water ice vaporization on Ceres

Editor’s Highlight—   The presence of water vapor around Ceres, a dwarf planet within the orbit of Neptune, is a current research topic of high interest. This paper explores the link between two interesting observations: the Kuppers et al. [2014] detection of water vapor around Ceres and the Dawn mission.... more

New insight into structure and composition of Mars’ northern plains

Editor’s Highlight—   Using Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) spectrometer data, this paper presents a comprehensive study of the craters in the northern lowlands of Mars, specifically looking at the hydrated and mafic minerals found in the crust below the sediment. The findings.... more

Ripples and deposits on Martian dunes

Editor’s Highlight—   This paper provides an overview of the Mars Science Laboratory’s rover “Curiosity” month-long exploration of the Bagnold dune field, in particular the exploration of the High and Namib dunes. The authors document a series of observations from the stoss and lee slopes of these dunes.... more

Reading the rocks that reveal the history of impact events

Editor’s Highlight—   This paper considers the diffusion of heat and argon in a complex medium representing a polygenetic impact melt breccia. Using straightforward numerical methods, the authors explore a wide range of heating scenarios of target rocks that could represent surficial material of the.... more

Aeolian Saltation on Mars at Low Wind Speeds

Editor’s Highlight—   There has been a long-standing discrepancy between (i) low wind speeds on Mars as observed by landed instruments and predicted by numerical atmospheric models, as well as a high friction speed threshold for saltation on Mars determined by wind tunnel simulations, and (ii) evidence.... more

Mineralogy of an Active Eolian Sediment from the Namib Dune, Gale Crater, Mars

Editor’s Highlight—   The dark basaltic dunes in the Gale crater on Mars are active, therefore their mineralogy is a good starting point for understanding Martian basalts and other dune compositions, particularly because the actual compositions of the constituent minerals were derived. This paper examines.... more