L. R. Ostrach
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View article: Source(s) of the Smooth Caloris Exterior Plains on Mercury: Mapping, Remote Analyses, and Scenarios for Future Testing with BepiColombo Data
Source(s) of the Smooth Caloris Exterior Plains on Mercury: Mapping, Remote Analyses, and Scenarios for Future Testing with BepiColombo Data Open
Mercury hosts widespread smooth plains that are concentrated in the Caloris impact basin, in an annulus surrounding the Caloris basin, and in the adjacent northern smooth plains. The origins of these smooth plains are uncertain, although p…
View article: Crater Detection Dependence on Resolution, Incidence Angle, Emission Angle, and Phase Angle
Crater Detection Dependence on Resolution, Incidence Angle, Emission Angle, and Phase Angle Open
Impact crater population detection and measurement is critical to understanding solar system bodies and dynamics. However, the ability to detect all possible craters under different lighting and camera geometries has not been systematicall…
View article: Lunar secondary crater distributions and ejecta fragment size velocity distributions: implications for regolith redistribution
Lunar secondary crater distributions and ejecta fragment size velocity distributions: implications for regolith redistribution Open
We have performed an extensive study of secondary craters associated with specific primary craters on the Moon.  These data can be used to understand aspects of both (1) the secondary craters themselves and (2) the ejecta fragments th…
View article: Assessment of lunar resource exploration in 2022
Assessment of lunar resource exploration in 2022 Open
First posted May 9, 2023 For additional information, contact: Astrogeology Research Program staffAstrogeology Science CenterU.S. Geological Survey2255 N. Gemini Dr.Flagstaff, AZ 86001 The idea of mining the Moon, once purely science-fictio…
View article: The Lunar Geophysical Network Landing Sites Science Rationale
The Lunar Geophysical Network Landing Sites Science Rationale Open
The Lunar Geophysical Network (LGN) mission is proposed to land on the Moon in 2030 and deploy packages at four locations to enable geophysical measurements for 6–10 yr. Returning to the lunar surface with a long-lived geophysical network …
View article: The scientific rationale for deployment of a long-lived geophysical network on the Moon
The scientific rationale for deployment of a long-lived geophysical network on the Moon Open
International audience
View article: The Lunar Geophysical Network Landing Sites Science Rationale
The Lunar Geophysical Network Landing Sites Science Rationale Open
The Lunar Geophysical Network (LGN) mission is proposed to land on the Moon in 2030 and deploy packages at four locations to enable geophysical measurements for 6–10 yr. Returning to the lunar surface with a long-lived geophysical network …
View article: Measuring impact crater depth throughout the solar system
Measuring impact crater depth throughout the solar system Open
One important, almost ubiquitous, tool for understanding the surfaces of solid bodies throughout the solar system is the study of impact craters. While measuring a distribution of crater diameters and locations is an important tool for a w…
View article: Widespread effusive volcanism on Mercury likely ended by about 3.5 Ga
Widespread effusive volcanism on Mercury likely ended by about 3.5 Ga Open
Crater size–frequency analyses have shown that the largest volcanic plains deposits on Mercury were emplaced around 3.7 Ga, as determined with recent model production function chronologies for impact crater formation on that planet. To tes…