11 to 20 of 2,897 Results
May 20, 2024
Surendra Adhikari, 2024, "Causes of Earth's spin axis motion unraveled by physics-informed neural networks", https://doi.org/10.48577/jpl.JNPIYD, Nature Geoscience, JPL Open Repository
Earth’s spin axis exhibits movements relative to its crust over different timescales, commonly known as polar motion. A 120-year-long record of polar motion features interannual and multidecadal fluctuations of 20 to 40 milliarcseconds (mas) superimposed on a secular trend of abo... |
May 20, 2024
Nereida Rodriguez Alvarez, 2024, "Estimating Backward Scattering using GNSSReflectometry Measurements for Soil Moisture Retrieval", https://doi.org/10.48577/jpl.VC3JAC, IEEE Access, JPL Open Repository
Soil Moisture (SM) is a key geophysical variable that enables a better understanding of theEarth’s hydrological processes. Missions like Soil Moisture Ocean Salinity (SMOS) and Soil Moisture ActivePassive (SMAP) have been the primary sources of SM estimations for years. The NASA-... |
May 20, 2024
Mike Ressler, 2024, "JWST Observations of Young protoStars (JOYS+): Detection of icy complex organic molecules and ions I. CH4 , SO2 , HCOO− , OCN−, H2 CO, HCOOH, CH3 CH2 OH, CH3 CHO, CH3 OCHO, CH3 COOH", https://doi.org/10.48577/jpl.SLERMD, Astronomy & Astrophysics, JPL Open Repository
Context. Complex organic molecules (COMs) are ubiquitously detected in the gas phase and are thought to be mostly formed on icy grains. Nevertheless, no unambiguous detection of COMs larger than CH3 OH in ices has been reported so far, but exploring this matter in more detail has... |
May 15, 2024
Karl Mitchell, 2024, "A proposed cryovolcanic eruption model for Enceladus' plume", https://doi.org/10.48577/jpl.8UVCCI, Geophysical Research Letters, JPL Open Repository
There is considerable interest in sending a mission to Enceladus to sample its erupting materials, which are transported either directly or indirection from its ocean, a likely habitable environment. However, we lack of clear resolution between candidate ascent and eruption model... |
May 14, 2024
Robert Pappalardo, 2024, "Science Overview of the Europa Clipper Mission", https://doi.org/10.48577/jpl.BWCR3P, Space Science Reviews, JPL Open Repository
NASA’s Europa Clipper mission is the first focused exploration of an ocean world, and has as its main goal assessing the habitability of Jupiter’s moon Europa. After entering Jupiter orbit in 2030, the flight system will collect science data while flying past Europa 49 times at t... |
May 14, 2024
Fulvia Pucci, 2024, "APPLICATIONS OF FAST MAGNETIC RECONNECTION MODELS TO THE ATMOSPHERES OF THE SUN AND PROTOPLANETARY DISKS", https://doi.org/10.48577/jpl.GYJKOI, The Astrophyscial Journal, JPL Open Repository
Partially-ionized plasmas consist of charged and neutral particles whose mutual collisions modify magnetic reconnection compared with the fully-ionized case. The collisions alter the rate and locations of the magnetic dissipation heating and the distribution of energies among the... |
May 13, 2024
Fielding, Eric (329A); Liu, Z; Stephenson, O; Zhong, M; Liang, C; Moore, A; Yun, S H; Simons, M, 2024, "Surface deformation related to the 2019 Mw 7.1 and Mw 6.4 Ridgecrest Earthquakes in California from GPS, SAR interferometry, and SAR pixel offsets", https://doi.org/10.48577/jpl.DF0JMI, Seismological Research Letters, JPL Open Repository
Surface deformation related to the 2019 Mw 7.1 and Mw 6.4 Ridgecrest Earthquakes in California from GPS, SAR interferometry, and SAR pixel offsets |
May 13, 2024
Alex Conrad, 2024, "Sentinel-6 Michael Freilich precise orbit determination using PODRIX and TriG receiver measurements", https://doi.org/10.48577/jpl.Y1PSGL, Journal of Geodesy, JPL Open Repository
The Sentinel-6 Michael Freilich (MF) altimetry mission flies two GNSS receivers: a primary multi-GNSS (GPS plus Galileo) PODRIX receiver and a GPS-only TriG receiver. Each of these receivers is independently capable of supporting the precise orbit determination (POD) requirement... |
May 9, 2024
Mehmet Ogut, 2024, "Demonstration of a Combined Active/Passive L-Band Microwave Remote Sensing Airborne Instrument", https://doi.org/10.48577/jpl.DFRXGU, Journal of Selected Topics in Applied Earth Observations and Remote Sensing, JPL Open Repository
The Passive Active L-Band System (PALS) is an airborne microwave instrument suite that combines a separate radar and radiometer airborne instrument with a common antenna. PALS has been used for salinity, wind speed, and soil moisture measurements, which is critical for calibratio... |
May 8, 2024
Ryan Park, 2024, "The Hera Radio Science Experiment at Didymos", https://doi.org/10.48577/jpl.KCTDHD, Planetary and Space Science, JPL Open Repository
Hera represents the European Space Agency's inaugural planetary defense space mission and plays a pivotal role in the Asteroid Impact and Deflection Assessment international collaboration with NASA DART mission that performed the first asteroid deflection experiment using the kin... |
