Adsorption Driven Regolith-Atmospheric Water Vapor Transfer On Mars: An Analysis Of Phoenix Tecp Data, 2019 University of Arkansas, Fayetteville
Adsorption Driven Regolith-Atmospheric Water Vapor Transfer On Mars: An Analysis Of Phoenix Tecp Data, Holly Nicole Farris
Theses and Dissertations
NASA’s Phoenix mission allowed for investigations of Martian diurnal water vapor cycles through the collection of temperature, relative humidity, and electric conductivity data by the Thermal and Electric Conductivity Probe (TECP) instrument. Using this data and previous experimental data, we propose a regolith-driven adsorption-desorption regime at the Phoenix landing site, where parameters intrinsic to the regolith are controlling localized relative humidity at the surface. To constrain these parameters, we model adsorption as a function of temperature and relative humidity across various Mars-relevant materials, defined by two layer-based adsorption theories: Langmuir (monolayer) and Brunauer-Emmett-Teller or BET (multilayer). Langmuir serves as ...
Decoding The History Of The Early Solar System Using Comet Volatile Compositions, 2019 University of Missouri-St. Louis
Decoding The History Of The Early Solar System Using Comet Volatile Compositions, Nathan Roth
Understanding the evolution of the solar system, as well as its current volatile content, requires knowledge of the initial conditions present in the solar nebula. As some of the first objects to accrete in the solar nebula, cometary nuclei are among the most primitive remnants of solar system formation, and their present-day volatile composition likely reflects the composition and conditions where (and when) they formed. As such, the volatile compositions of cometary nuclei may serve as "fossils" of solar system formation. High-resolution near-infrared spectroscopy offers a valuable tool for sampling the primary volatile (i.e., ices subliming directly from the ...
Figure 3: Simulation Results For Flux Tube Entropy And Specific Entropy In Saturn's Magnetosphere, 2019 Embry-Riddle Aeronautical University
Figure 3: Simulation Results For Flux Tube Entropy And Specific Entropy In Saturn's Magnetosphere, Xuanye Ma, Peter A. Delamere, Michelle F. Thomsen, Antonius Otto, Bishwa Neupane, Brandon Burkholder, Katariina Nykyri
No abstract provided.
Figure 2: Simulation Results For Flux Tube Entropy And Specific Entropy In Saturn's Magnetosphere, 2019 Embry-Riddle Aeronautical University
Figure 2: Simulation Results For Flux Tube Entropy And Specific Entropy In Saturn's Magnetosphere, Xuanye Ma, Peter A. Delamere, Michelle F. Thomsen, Antonius Otto, Bishwa Neupane, Brandon Burkholder, Katariina Nykyri
No abstract provided.
Understanding Solar Activity During The Last 400 Years, 2019 Macalester College
Understanding Solar Activity During The Last 400 Years, Sam Q. Hollenbach
Macalester Journal of Physics and Astronomy
The solar cycle has a profound effect on both terrestrial and extra-terrestrial operations. Understanding the history of the solar cycle is necessary for studying long term trends, however older data is difficult to calibrate due to the sparsity of observations. In this paper we propose a new method for calibrating sunspot number data that does not rely on observational overlap. Initial testing shows promise in this method’s success, though more work must be done to ensure calibration consistency across all observers.
Induced Magnetic Dipole On Jupiter’S Moon Europa, 2019 Embry-Riddle Aeronautical University
Induced Magnetic Dipole On Jupiter’S Moon Europa, Luke Francis, Michele Zanolin
Physics can have some of the most unique and extraordinary applications of basic principles applied on a larger scale. This paper will explore the properties of induced magnetic dipoles and will examine this phenomenon directly from Jupiter's moon, Europa. These properties will be used to determine if there is liquid water beneath its icy surface and how this conclusion was verified. This will be accomplished using the concepts of magnetic dipoles and induced currents. Recent missions have also revealed estimates of the depth of Europa's subsurface ocean. There have been many measurements taken of Europa's magnetic field ...
Using Atran Telluric Correction To Investigate The 3Μm-Region, 2019 University of Tennessee, Knoxville
Using Atran Telluric Correction To Investigate The 3Μm-Region, Lucas Trent Mcclure
EURēCA: Exhibition of Undergraduate Research and Creative Achievement
Small-bodies of the Solar System, such as asteroids, provide an abundant amount of information about planetary formation and evolution. In particular, the characterization of asteroids is vital to understanding the distribution and abundance of water throughout the Solar System. Recent findings in asteroid spectroscopy have provided evidence for the surface presence of water-ice and hydroxide, likely due to silicates on asteroid surfaces interacting with H+ ions from the solar wind. To investigate surface hydration, astronomers analyze the 3µm region, where an absorption feature is exhibited. Atmospheric water, however, affects the quality of the data around this particular region, but a ...
Pluto’S Classification, 2019 Southeastern University - Lakeland
Pluto’S Classification, Saylor Bane
Nearly 100 years ago, astronomers hypothesized that a large celestial object, nicknamed “Planet X,” must be pulling two planets out of their typical heliocentric orbits. After racing to find this celestial object for decades, Clyde Tombaugh found a faint sparkling speck of light and announced that he had finally discovered Planet X. Later, Tombaugh’s discovery was named Pluto and immediately deemed the ninth planet. As technology improved, many other celestial objects were found lurking in the outer limits of the solar system leading to worldwide confusion over which were official planets. To solve the problem, the International Astronomical Union ...
Galactic Preservation And Beyond: A Framework For Protecting Cultural, Natural, And Scientific Heritage In Space, 2019 College of William & Mary Law School
Galactic Preservation And Beyond: A Framework For Protecting Cultural, Natural, And Scientific Heritage In Space, Matthew Rosendahl
William & Mary Environmental Law and Policy Review
In July 2017, Moon Express, a private spaceflight company, announced plans to build an outpost on the South Pole of the Moon by 2020. The goal? To mine the Moon for minerals and water that could then be sold for profit. Indeed, the Moon has been found to possess resources with lucrative uses, both in space and here on Earth. The potential for huge rewards has incentivized several private and governmental actors to launch planned expeditions to the Moon, with China becoming the third nation to land a spacecraft there in 2013. Both China and India have since announced plans ...
Measurement Of Solar Spectral Irradiance And Surface Ozone At Carrollton, Georgia, Usa, During The Great American Eclipse On 21 August 2017, Kirthi Tennakone, L Ajith Desilva, Charles A. Zander*, Shea Rose, Austin B. Kerlin
Georgia Journal of Science
Measurements conducted at the University of West Georgia, Carrollton, Georgia, during the time of the solar eclipse of 21st August 2017 demonstrated that the integrated spectral irradiance in defined wavelength ranges in the ultraviolet and visible calculated as a fraction of the total irradiance reached a minimum at maximum obscuration of the Sun, whereas in an infrared range it was maximum. The method of analysis adopted supports the view that the changes in spectral irradiance during highly obscured partial phases is a consequence of limb darkening. In a surface ozone measurement, a minimum in ozone concentration occurred 30 +_ ...
Engaging The Greater Lafayette Community In A Journey Through The Earth Sciences: Purdue’S Eaps Earth Science Passport Day Event, Dara Laczniak, Bradley Garczynski
Engagement & Service-Learning Summit: Connecting Through Listening & Scholarship
No abstract provided.
The Limited Reign Of Saturn's Rings, 2019 Gettysburg College
The Limited Reign Of Saturn's Rings, Laurence A. Marschall
Physics and Astronomy Faculty Publications
Saturn’s rings—stretching tens of thousands of miles above its equator but no more than a few hundred yards thick—mark an ancient debris field of orbiting ice shards, the remains of a moon-sized object that strayed too close and was torn to pieces by Saturn’s intense gravitation. Astronomers have debated when the rings formed and how long they will stay in orbit. Recent observations from large, land-based telescopes and orbiting spacecraft reveal that Saturn’s rings are remarkably young and are dissipating at a rapid rate. [excerpt]
Applications Of Information Theory In Solar And Space Physics, 2019 Andrews University
Applications Of Information Theory In Solar And Space Physics, Jay Johnson, Simon Wing
Characterizing and modeling processes at the sun and space plasma in our solar system are difficult because the underlying physics is often complex, nonlinear, and not well understood. The drivers of a system are often nonlinearly correlated with one another, which makes it a challenge to understand the relative effects caused by each driver. However, entropy-based information theory can be a valuable tool that can be used to determine the information flow among various parameters, causalities, untangle the drivers, and provide observational constraints that can help guide the development of the theories and physics-based models. We review two examples of ...
Astronomy For Educators, 2019 University of Arkansas, Fayetteville
Astronomy For Educators, Daniel E. Barth
Open Educational Resources
Astronomy for Educators provides new and accomplished K-12 instructors with concepts and projects for low-cost, high-impact STEM classroom instruction that is built around the National Academies National Research Council's K-12 Framework for Science Education.
Ua66/12 Ogden College Of Science & Engineering Hardin Planetarium, 2019 Western Kentucky University
Ua66/12 Ogden College Of Science & Engineering Hardin Planetarium, Wku Archives
WKU Archives Collection Inventories
Records created by and about the Hardin Planetarium.
Sorce-Based Solar Spectral Irradiance (Ssi) Record For Input Into Chemistry Climate Studies, 2019 University of Colorado Boulder
Sorce-Based Solar Spectral Irradiance (Ssi) Record For Input Into Chemistry Climate Studies, Jerald W. Harder, Stephane Beland, Martin Snow
Laboratory for Atmospheric & Space Physics Faculty Contributions
Whole atmosphere chemistry-climate model (CCM) transient studies require a solar spectral irradiance (SSI) time series with very broad wavelength coverage with an uninterrupted daily cadence over a full solar cycle time period. Herein is described the construction of a SSI record valid over Solar Cycles 23 and 24 (SC23, SC24) specifically designed to provide: 1) A daily solar spectrum from SORCE (Solar Radiation and Climate Experiment) observations from 208-2400 nm over the 2003-to 2015-time frame. 2) A wavelength extension of this spectrum out to 10000 nm from daily spectral synthesis from the Solar Radiation Physical Model (SRPM). 3) SRPM gap-filled ...
Viewing The Eclipse From 109,000 Feet And The Road To Get There, 2019 Metropolitan Community College
Viewing The Eclipse From 109,000 Feet And The Road To Get There, Kendra Sibbernsen, Michael Sibbernsen
Faculty Publications, Department of Physics and Astronomy
The NASA Nebraska High Altitude Ballooning Program was one of 55 teams across the nation to fly weather balloons within the August 21st Total Solar Eclipse and stream live video to the internet. On this day, the Nebraska team launched three high altitude balloons to take scientific measurements and take photos and video ofthe Moon's shadow falling on the Earth. These balloons included the NASA common video streaming payload as well as experiments from students at Metropolitan Community College and from faculty and students at Omaha Public Schools. The launches took place at the "Gem Over the Prairie" event ...
Ua66/11/1 Ogden College Of Science & Engineering Physics & Astronomy Publications, 2019 Western Kentucky University
Ua66/11/1 Ogden College Of Science & Engineering Physics & Astronomy Publications, Wku Archives
WKU Archives Collection Inventories
Publications by and about the Department of Physics and Astronomy.
Book Review: Life On Mars: What To Know Before We Go, 2018 Embry-Riddle Aeronautical University
Book Review: Life On Mars: What To Know Before We Go, T. D. Oswalt
This document is Dr. Oswalt’s review of Life on Mars: what to know before we go. Princeton, 2018. 302p index ISBN 9780691180533, $29.95; ISBN 9781400889945 ebook, contact publisher for price.
Methanogens, Plausible Extraterrestrial Life Forms On Mars, And Their Tolerance To Increasing Concentrations Of Illite Clay, 2018 University of Arkansas, Fayetteville
Methanogens, Plausible Extraterrestrial Life Forms On Mars, And Their Tolerance To Increasing Concentrations Of Illite Clay, Chandler Kern
Biological Sciences Undergraduate Honors Theses
Methanogens, some of Earth’s most primitive prokaryotic organisms, are candidates for possible life forms capable of inhabiting Mars. Specifically, four different species (Methanobacterium formicicum, Methanococcus maripaludis, Methanosarcina barkeri, Methanothermobacter wolfeii) were analyzed for their tolerance to the presence of illite clay. Illite is a crystalline mineral that has been identified from regions of Mars’s surface. Results indicated that all four species grew with some success in the illite at different concentrations. This experimentation with methanogens’ abilities to survive and reproduce in the presence of illite allows for a more accurate understanding of the potential capability of microbial growth ...