Showing 8,741 - 8,760 results of 16,633 for search 'Earth', query time: 0.10s Refine Results
  1. 8741

    Optimization and Characterization of Chance-Constrained Guidance, Navigation, and Control for Low-Energy Lunar Transfers by Fitzgerald, Riley McCrea

    Published 2022
    “…Low-energy transfers utilizing multi-body dynamics show great promise for future space exploration; in regions with multiple dominant gravitating bodies (for example, in the Earth-Moon system or among the gas giant moons) they can offer reduced capture Δv, more flexible launch windows, and an increased set of accessible arrival conditions to any spacecraft willing to deal with the extra transfer time they require. …”
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  2. 8742

    Probing the Mantle Transition Zone beneath the Central Pacific Region Using PP Precursors by Jian, Jing

    Published 2023
    “…The mantle transition zone (MTZ) of the Earth is bounded by globally observed discontinuities at depths of about 410 and 660 km, which are mainly attributed to the spinel and post-spinel phase transitions of olivine. …”
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  3. 8743

    Mass Transfer and Chemical Interactions in Subduction Zones by Codillo, Emmanuel Avila

    Published 2023
    “…Subduction zones are important sites of material recycling on Earth, with volatiles playing key roles in mass transfer processes and magma formation. …”
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    Thesis
  4. 8744

    Energy Policy Impacts on Air Quality and Climate at the National, Regional and Global Scale by Freese, Lyssa M.

    Published 2023
    “…The ability of future society to adapt to and mitigate climate change in a just way requires an understanding of the local impacts of policy, as well as the uncertainties in the human and earth systems. This thesis brings together air quality and climate change, quantifying the impacts of relevant policies, developing idealized metrics for quantifying climate phenomena, and improving our capacity to model future emissions scenarios. …”
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  5. 8745

    Convective Dynamics of the Tropical Atmosphere in Three Idealized Approaches by Velez Pardo, Martin

    Published 2024
    “…Atmospheric convection organized at large spatial scales significantly influences precipitation patterns and weather events in tropical and subtropical regions, and has a rich, two-way interaction with Earth's climate. Tropical cyclones, mesoscale convective complexes, heat lows, and the rainbands of the Intertropical Convergence Zone are all examples of such large-scale convective organization, but despite their relevance for human life and ecosystems, the mechanisms that govern their formation and many of their characteristics are not fully understood. …”
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  6. 8746

    Modeling the Future Space Debris Population and Orbital Capacity by Jang, Daniel

    Published 2024
    “…Increased investments and technological advances in satellite manufacturing and launch services have led to a newly vitalized Low Earth Orbit (LEO) environment. Megaconstellations consisting of hundreds to hundreds of thousands of satellites have been proposed, with SpaceX’s Starlink satellite constellation now reaching more than 5400 operational satellites. …”
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  7. 8747
  8. 8748

    ExoplanetSat: Detecting transiting exoplanets using a low-cost CubeSat platform by Smith, Matthew William, Seager, Sara, Pong, Christopher Masaru, Villasenor, Jesus Noel Samonte, Knapp, Mary E., Farmer, Grant Trapnell, Jensen-Clem, Rebecca M., Ricker, George R, Miller, David W

    Published 2011
    “…The spacecraft prototype - termed ExoplanetSat - is a 3U space telescope capable of monitoring a single target star from low Earth orbit. Given the volume limitations of the CubeSat form factor, designing a capable spacecraft requires overcoming significant challenges. …”
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    Article
  9. 8749

    The impact of bark beetle infestations on monoterpene emissions and secondary organic aerosol formation in western North America by Berg, A. R., Heald, Colette L., Huff Hartz, K. E., Hallar, A. Gannet, Meddens, A. J. H., Hicke, J. A., Lamarque, Jean-Francois, Tilmes, S.

    Published 2013
    “…We use 14 yr of beetle-induced tree mortality data together with beetle-induced monoterpene emission data in the National Center for Atmospheric Research (NCAR) Community Earth System Model (CESM) to investigate the impact of beetle-induced tree mortality and attack on monoterpene emissions and secondary organic aerosol (SOA) formation in western North America. …”
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    Article
  10. 8750
  11. 8751

    Development of CCDs for REXIS on OSIRIS-REx by Ryu, Kevin K., Burke, Barry E., Lambert, Renee D., Suntharalingam, Vyshnavi, Ward, Christopher M., Warner, Keith, Masterson, Rebecca A., O'Brien, Peter W., Bautz, Marshall W., Kissel, Steve E., Binzel, Richard P, Clark Jr, Harry R.

    Published 2015
    “…The spacecraft will fly to and orbit the near-Earth asteroid Bennu, while REXIS maps the elemental distribution on the asteroid using x-ray fluorescence. …”
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    Article
  12. 8752

    Twelve thousand years of dust: the Holocene global dust cycle constrained by natural archives by Albani, S., Mahowald, N. M., Winckler, G., Anderson, R. F., Bradtmiller, L. I., Delmonte, B., François, R., Goman, M., Heavens, N. G., Hesse, P. P., Hovan, S. A., Kang, S. G., Kohfeld, K. E., Lu, H., Maggi, V., Mason, J. A., Mayewski, P. A., Miao, X., Otto-Bliesner, B. L., Perry, A. T., Pourmand, A., Roberts, H. M., Rosenbloom, N., Stevens, T., Sun, J., McGee, William David

    Published 2015
    “…Based on the data compilation, we used the Community Earth System Model to estimate the mass balance of and variability in the global dust cycle during the Holocene, with dust loads ranging from 17.2 to 20.8 Tg between 2000 and 10 000 years ago and with a minimum in the early to mid-Holocene (6000–8000 years ago).…”
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  13. 8753

    The effects of core-reflected waves on finite fault inversions with teleseismic body wave data by Qian, Yunyi, Ni, Sidao, Wei, Shengji, Almeida, Rafael, Zhang, Han

    Published 2018
    “…This ray-based method can efficiently generate synthetic seismograms for turning and core-reflected waves independently, with the flexibility to take into account the 3-D Earth structure effect on the timing between these phases. …”
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    Journal Article
  14. 8754
  15. 8755

    Multivariate approaches to infer volcanic system parameters, timing, and size of explosive eruptions by Manta, Fabio

    Published 2019
    “…To monitor the associated risk, volcanologists apply several ground-based and satellite techniques to analyse geophysical signals associated with the mechanisms happening deep inside the earth that can lead to an eruption. These techniques allow, with the appropriate instruments in place, to estimate the time and intensity of coming events and, in case a large eruption is ongoing, can provide information on ash ejection rates and column heights. …”
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    Thesis
  16. 8756
  17. 8757
  18. 8758
  19. 8759
  20. 8760