Results 11 to 20 of about 5,477 (253)

Sulfur Isotopic Fractionation of the Youngest Chang'e‐5 Basalts: Constraints on the Magma Degassing and Geochemical Features of the Mantle Source

Geophysical Research Letters, 2022
The unusually prolonged volcanism at the Chang'e‐5 (CE‐5) landing site remains a mystery. To constrain the geochemical features of the CE‐5 mantle source, we performed in situ sulfur isotope analysis on sulfides of the CE‐5 basalts.
Xiaoying Liu, Jialong Hao, Rui‐Ying Li, Yuyang He, Heng‐Ci Tian, Sen Hu, Jing Li, Lixin Gu, Wei Yang, Yangting Lin   +9 more
doaj   +1 more source

A Geologic Map of Vesta Produced Using a Hybrid Method for Incorporating Spectroscopic and Morphologic Data

The Planetary Science Journal, 2023
We have constructed a global geologic map of the minor planet Vesta at 1:300,000-scale using Dawn spacecraft imaging, spectroscopic, topographic, and elemental data.
R. Aileen Yingst, Scott C. Mest, W. Brent Garry, David A. Williams, Daniel C. Berman, Tracy K. P. Gregg   +5 more
doaj   +1 more source

Responding trends of ionospheric F2-layer to weaker geomagnetic activities

Journal of Space Weather and Space Climate, 2022
Geomagnetic activities frequently occur in varying degrees. Strong geomagnetic activities, which have been widely investigated, occur occasionally; they can cause distinguishable and significant disturbances in the ionosphere.
Chen Yiding, Liu Libo, Le Huijun, Zhang Hui, Zhang Ruilong   +4 more
doaj   +1 more source

Geology of the Alpha Regio (V-32) Quadrangle, Venus

Journal of Maps, 2019
We present a 1:2,500,000 geological map of the Alpha Regio (V-32) quadrangle, Venus. The V-32 quadrangle extends from 0° to 25 S, 0°to 30° E with an area of approximately 7,600,000 km2. Geological mapping was conducted using full resolution (maximum 75 m/
Erin M. Bethell, Richard E. Ernst, Claire Samson   +2 more
doaj   +1 more source

Solar Tide‐like Signatures in the Ionospheric Total Electron Content During the 2018 Sudden Stratospheric Warming Event

Space Weather, 2022
Atmospheric waves play an important role in the vertical coupling of atmosphere and ionosphere. Recent studies revealed that the mesospheric wave activities associated with sudden stratospheric warming events (SSWs) are more complicated than previously ...
Han Ma, Maosheng He, Libo Liu, Wenbo Li, Yuyan Yang, Ruilong Zhang, Yiding Chen, Huijun Le, Hui Zhang, Guozhu Li   +9 more
doaj   +1 more source

Sustainable Pd‐Catalyzed Aminations “on Dirty Water”

Angewandte Chemie, EarlyView.
Aminations, done safely yet neat, and therefore, quickly, using low levels of Pd, in “dirty water” that must contain 30% KOH; not NaOH, and not at 5%,10%, 20%, 40%, or 50% KOH. Moreover, no base sensitivity of functional groups! Very cool. Thank you, Nature.
Erfan Oftadeh, Marco Ortiz, Kylee Dismuke Rodriguez, Jonathan Yang, Bruce H. Lipshutz   +4 more
wiley   +2 more sources

Concurrent effects of Martian topography on the thermosphere and ionosphere at high northern latitudes

Earth, Planets and Space, 2022
Martian topography modulated non-migrating tides play important roles in the upper atmosphere and thus in the ionosphere through their coupling, especially in their longitude variations. In this study, the neutral scale height (H n ) and ionospheric peak
Yiding Chen, Libo Liu, Huijun Le, Hui Zhang, Ruilong Zhang   +4 more
doaj   +1 more source

Imagining a new era of planetary field geology [PDF]

Science Advances, 2019
Kip V. Hodges Harrison H. Schmitt July marked the beginning of a 3-year-long celebration of one of the most remarkable periods of human exploration in history: the Apollo missions to the Moon. Reflections on Apollo have inspired a renewed international interest in sustained lunar exploration.
Hodges, K. V., Schmitt, H. H.
openaire   +2 more sources

A New Method for Retrieving Electron Density Profiles from the MARSIS Ionograms

Remote Sensing, 2022
The Martian ionosphere was actively detected by Mars Advanced Radar for Subsurface and Ionosphere Sounding (MARSIS) aboard the Mars Express. The detected echo signal of the MARSIS at an epoch is presented as a function of frequency and time delay to form
Wendong Liu, Libo Liu, Yiding Chen, Huijun Le, Ruilong Zhang, Wenbo Li, Jiacheng Li, Tongtong Zhang, Yuyan Yang, Han Ma   +9 more
doaj   +1 more source

On the Ion Line Calibration by Plasma Line in ISR Measurements

Remote Sensing, 2023
The radar constant calibration in incoherent scatter radar ion line processing is essential for the data quality and was not paid enough attention in previous studies.
Xinan Yue, Fanyu Liu, Junyi Wang, Yonghui Wang, Yihui Cai, Feng Ding, Baiqi Ning, Mingyuan Li, Ning Zhang, Zhongqiu Wang, Su Xu   +10 more
doaj   +1 more source