A5047024750- Planetary Science and Exploration
- Astro and Planetary Science
- Geology and Paleoclimatology Research
- High-Velocity Impact and Material Behavior
- Structural Analysis and Optimization
- Gamma-ray bursts and supernovae
- Precipitation Measurement and Analysis
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Vibration and Dynamic Analysis
- Soil Moisture and Remote Sensing
- Geological and Geochemical Analysis
- Satellite Communication Systems
- Rock Mechanics and Modeling
- Spacecraft Design and Technology
- Space Technology and Applications
- Geotechnical and Geomechanical Engineering
- High-pressure geophysics and materials
- Structural Engineering and Vibration Analysis
University of Colorado Boulder
2022-2024
Southwest Research Institute
2019-2024
Abstract The 2.02 billion year old Vredefort impact structure in South Africa offers a unique opportunity to study large‐scale processes on Earth. Vredefort's large size (∼250 km diameter) and eroded topography provides the effects of shock physics at depth post‐formation hydrothermal alteration. In this work, we simulate formation building upon recent (iSALE) simulations. We expand those simulations cover wider range input conditions, compute impact‐driven porosity permeability. latter...
Abstract We report the detection of 239 trans-Neptunian objects discovered through ongoing New Horizons survey for distant minor bodies being performed with Hyper Suprime-Cam mosaic imager on Subaru Telescope. These were in images acquired either r 2 or recently commissioned EB- gri filter using shift and stack routines. Due to extremely high stellar density search region downstream spacecraft, new machine learning techniques had be developed manage false-positive rate bogus candidates...
Abstract Large asteroid impacts have long been attributed to imparting long‐lived heat in the upper crust, as well widespread fracturing and porosity. When an impact occurs on or near ocean environment, displaced water rushes back filling crater percolating down into fractured crust. The significant from allow for extensive hydrothermal activity. Hydrothermal alteration has observed at 180 km Chicxulub structure Yucatán, Mexico. Previous studies estimate transport activity within structure,...
Abstract Cratering is a prominent evolutionary process on asteroids. Crater morphologies, regolith generation, bulk fracturing and projectile implantation are all examples of asteroidal surface evolution resulting from impact processes. The characterization these processes metal‐rich bodies has become priority due to the upcoming NASA Psyche mission, poised study likely 225‐km main belt asteroid, (16) Psyche. Small‐scale experiments into metals (e.g., iron, aluminum, copper, steel) have...
The flight operations of the Cyclone Global Navigation Satellite System (CYGNSS), a constellation eight microsatellites built and operated by Southwest Research Institute (SwRI), designed to improve intensity forecasts Tropical Cyclones, has seen litany changes its concept operations, software, processes, personnel. In this paper, we detail how team responded several challenges such as reduction in personnel after Launch Early Orbit Operations phase, addition downlink antenna Japan,...
Abstract Utilizing a large two-stage light gas gun and pendulum assembly, experiments were performed to measure the momentum enhancement (or increase in due ejecta) of two ARMCO iron targets, concrete block target, target stones held by concrete, hematite rock targets. As we have shown over past decade HVIS papers, role impactor size is important, these tests at as scale possible for us speeds, with 3-cm-diameter aluminum spheres. All impacts save one around 5 km/s. There distinct difference...
The successful operation of spacecraft requires careful planning. Each mission comes with a unique set challenges that must be met by tools and techniques developed on mission-specific basis. In the past, these have been created as Command Line Interfaces (CLIs), Remote (Remote CLIs), or Graphical User (GUIs). This paper presents method for development custom implemented planning CYGNSS (Cyclone Global Navigation Space System) mission: using Django web framework to act remote Interface....
Cratering is a prominent evolutionary process on asteroids. Crater morphologies, regolith generation, bulk fracturing and projectile implantation are all examples of asteroidal surface evolution resulting from impact processes. With the upcoming launch Psyche mission in 2022, followed by spacecraft’s arrival at 225-km presumed metal-rich asteroid, characterizing processes relevant metal bodies key for interpreting data. Small-scale experiments into metals (e.g., iron, aluminum, copper,...