A5046033521- Astro and Planetary Science
- Planetary Science and Exploration
- Methane Hydrates and Related Phenomena
- Space Science and Extraterrestrial Life
- Geology and Paleoclimatology Research
- Space Exploration and Technology
- Spectroscopy and Laser Applications
- Atmospheric Ozone and Climate
- Hydrology and Watershed Management Studies
- Electromagnetic Scattering and Analysis
- Earthquake Detection and Analysis
- Coastal wetland ecosystem dynamics
- Geomagnetism and Paleomagnetism Studies
- Radio Astronomy Observations and Technology
- Ionosphere and magnetosphere dynamics
- Peatlands and Wetlands Ecology
- Microwave Imaging and Scattering Analysis
China University of Geosciences
2021-2024
Hohai University
2024
Arizona State University
2011
Laboratoire Interdisciplinaire de Physique
2010
Laboratoire d’études spatiales et d’instrumentation en astrophysique
2010
Janssen (France)
2010
Decades of research using remotely sensed data have extracted evidence for the presence an ocean in northern lowlands Mars Hesperian (∼3.3 Ga), but these claims remained controversial due to lack situ analysis associated geologic unit, Vastitas Borealis Formation (VBF). The Tianwen-1/Zhurong rover was targeted land within VBF near its southern margin and has traversed almost 2 km southward toward interpreted shoreline. We report here on first that reveals sedimentary structures features...
Abstract We used imaging, laser altimeter and thermal infrared data to map a 0.5 by 0.5° area containing the landing site of Zhurong rover Tianwen‐1 mission. analyzed regional topography thermophysical characteristics, identified characterized cones, impact craters, polygonal troughs, ridges aeolian bedforms. An absolute model age 757 ± 66 Ma was obtained for major unit dominating study area, younger than previous geological mapping results. propose several targets high scientific interest...
Abstract Aqueous activities on Mars have gradually declined since the Noachian (>3.7 Ga). Although water can be stored in subsurface during latest epochs, geomorphological evidence is still limited. In this study, we used situ imaging and spectral data acquired by China's Zhurong rover, as well high‐resolution remote‐sensing data, to investigate transverse aeolian ridges (TARs) landing region of Utopia Planitia. A two‐stage evolutionary scenario TARs proposed polygonal features with...
Aqueous activities on Mars have gradually declined since the Noachian (>3.7 Ga). During Hesperian and Amazonian periods, records of aqueous activity are relatively fragmentary. In 2021, Zhurong rover, part China’s Tianwen-1 mission, successfully landed in southern Utopia Planitia which belongs to northern lowlands Mars. High-quality orbital in-situ data landing region been acquired by orbiter provides unprecedent opportunities for studying post-Noachian as well testing...
Climate change and human activities have intensified variations of water table depth (WTD) in wetlands around the world, which may strongly affect greenhouse gas emissions. Here, we analyzed how emissions CO
设计了一个将电离层水平电场与风场耦合的模拟方案，研究了电流函数和风场在耦合前后的变化与差异. 研究发现，水平电场与风场相互反馈后，风场的变化比电流函数小. 经向风在白天有较明显的差异，夜晚的差异比白天小，主要出现在中高纬地区，并随高度的增加而增大，300km左右达到最大值，其后几乎保持不变. 纬向风有与经向风相似的变化，但纬向风耦合前后的差异比经向风小. 电流函数在耦合后有较大改变，两个涡旋强度都有较强增加，并且北半球的增强大于南半球，而夜晚差异较小. 结果表明，在研究的高度范围内，风场对电场的控制作用大于电场对风场的影响.
Multi-reflector based collimation antennas are widely used in microwave remote sensing and millimeter wave imaging. For design analysis of these antenna systems, many methods have been introduced which the Diffracted Gaussian beam approach (DGBA) is among most popular. electrically large reflector antennas, computation reflection diffraction for gigantic number elementary beams demands huge computational resources. To simulate a hundreds to thousands wavelength, it may require independent...
Zephyria Tholus has been proposed to be a composite volcano, however, detailed geomorphological study was not carried out due limited high-resolution remote sensing data. Here we use MOLA, THEMIS, CTX and HiRISE data conduct topographical analysis of Tholus. We identify extensive valleys troughs on the flank, which are sector collapse or glacio-fluvial in origin. The indicate coexistence different erosion resistance materials, along with observed solid lava outcrops. There also layered...