Results 51 to 60 of about 3,295 (219)

Were There Tides on Ancient Mars?

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract Tides are a key component in the Earth system as they help regulate climate and sustain life. Mars very likely had a surface ocean around 4–3 billion years ago. The NASA Curiosity Rover and the CNSA Zhurong Rover were sent to Gale Crater and the Vastitas Borealis Formation (VBF) on Mars to explore the surface and search for evidence of the ...
M. Jolley, M. Gugliotta, J. A. M. Green
wiley   +1 more source

LUVMI: an innovative payload for the sampling of volatiles at the Lunar poles [PDF]

, 2017
The ISECG identifies one of the first exploration steps as in situ investigations of the moon or asteroids. Europe is developing payload concepts for drilling and sample analysis, a contribution to a 250kg rover as well as for sample return.
Aked, Richard, Barber, S. J., Biswas, Janos, Ceglia, Enrico, Dobrea, Diana, Evagora, Anthony, Gancet, Jeremi, Govindaraj, Shashank, Kullack, Karsten, Madakashira, Hemanth, Murray, Neil, Philipp, Reiss, Pitcher, Craig, Reganaz, Mattia, Richter, Lutz, Rushton, Joseph, Salini, Joseph, Sheridan, Simon, Surdo, Leonardo, Urbina, Diego   +19 more
core  

Evaluating Seismic Ambient Noise Techniques for Imaging Lava Tubes on the Moon

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract Detecting and characterizing lava tubes is a key objective of upcoming lunar missions. While evidence for their presence exists, their precise dimensions and depths remain uncertain. This study evaluates the potential of seismic ambient noise methods, such as seismic interferometry, H/V spectral ratios, distributed acoustic sensing (DAS), and ...
Sabrina Keil, Rok Sesko, Martin Schimmel, Heiner Igel, Philipp Reiss   +4 more
wiley   +1 more source

Numerical Simulations of the Lunar Penetrating Radar and Investigations of the Geological Structures of the Lunar Regolith Layer at the Chang’E 3 Landing Site

International Journal of Antennas and Propagation, 2017
In the process of lunar exploration, and specifically when studying lunar surface structure and thickness, the established lunar regolith model is usually a uniform and ideal structural model, which is not well-suited to describe the real structure of ...
Chunyu Ding, Yan Su, Shuguo Xing, Shun Dai, Yuan Xiao, Jianqing Feng, Danqing Liu, Chunlai Li   +7 more
doaj   +1 more source

Monte Carlo Simulation of 3D Cloud Radiance Distributions Affected by Ground‐Based Lighting

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 6, 28 March 2026.
Abstract Satellite observations of artificial light sources at night are increasing. Clouds, as the most important radiative modulators in the Earth‐atmosphere system, significantly influence the observed values and spatial distribution of the artificial light coming from the ground.
Huixin Sun, Shensen Hu, Weihua Ai, Shuo Ma   +3 more
wiley   +1 more source

Simulation and Analysis of the Dynamic Range of the Lunar Radar and A New Algorithm for Surface Medium Electromagnetic Parameters Inversion [PDF]

, 2016
探地雷达(GPR)通过向地下发射高频率宽带电磁波来探测地下物体、地层界面以及地下介质属性和分布结构，被广泛应用于经济建设和军事各领域。由于雷达信号会受到各种电磁和背景噪声干扰，使得接收到的信号不能直接准确地反映地下介质信息，造成对目标检测和识别的困难。特别当处于非理想环境条件下，非目标介质反射信号干扰复杂，目标的反射波很难被识别。在对路面、隧道以及地下等检测时，遇到的地下介质多是层状分布的。人们不仅希望获得各层的深度和厚度，还希望得到各层介质的介电常数和电导率等参数。因此，本文将地表层介质作为研究的对象，
俞子伟
core  

Neutral Solar Wind Generated by Lunar Exospheric Dust at the Terminator

, 2007
We calculate the flux of neutral solar wind observed on the lunar surface at the terminator due to solar wind protons penetrating exospheric dust grains with (1) radii greater than 0.1 microns and (2) radii greater than 0.01 microns.
Abramowitz, Berg, Borisov, Brinkfeldt, Carrier III, Collier, Collier, Collier, Collier, Colwell, Criswell, De, Demond, Dwek, Eder, Elphic, Fahr, Farrell, Farrell, Figueroa, Freeman, Gruntman, Halekas, Heiken, Holzer, Hood, Johnson, Kallenbach, Liu, McCoy, McCoy, Michael R. Collier, Moore, Murphy, Park, Rennilson, Richardson, Roelof, Roelof, Rucinski, Schmitt, Severny, Stern, Stubbs, Stubbs, Stubbs, Stubbs, Stubbs, Taguchi, Taguchi, Timothy J. Stubbs, Wang, Wimmer-Schweingruber, Zook   +53 more
core   +1 more source

The role of GPR techniques in determining ice cave properties: Peña Castil ice cave, Picos de Europa [PDF]

, 2016
Producción CientíficaThe structure and ice content of ice caves are poorly understood. Ground penetrating radar (GPR) can provide useful insights but has only rarely been applied to ice caves.
Gómez Lende, Manuel, Jordá Bordehore, Luis, Sandoval, Senén, Serrano Cañadas, Enrique   +3 more
core   +2 more sources

The Evolution of a Polar Cap Patch Into a Blob in the Nightside Ionosphere: Direct Observations of Multiple Blob Formation Mechanisms Acting Simultaneously on the Same Plasma

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract A polar cap patch was observed to exit the polar cap to become a blob as it entered the auroral oval on the nightside of the Earth under moderately quiet geomagnetic conditions (Kp = 3−). Auroral particle precipitation led to an increase in the electron density of the blob.
S. J. Maguire, A. G. Wood, D. R. Themens, E. M. Henley, S. E. Milan, Y. Soobiah, K. Oksavik, W. J. Miloch, J. C. Coxon, M. G. Johnsen   +9 more
wiley   +1 more source

Application of Denoising CNN for Noise Suppression and Weak Signal Extraction of Lunar Penetrating Radar Data

Remote Sensing, 2021
As one of the main payloads mounted on the Yutu-2 rover of Chang’E-4 probe, lunar penetrating radar (LPR) aims to map the subsurface structure in the Von Kármán crater.
Haoqiu Zhou, Xuan Feng, Zejun Dong, Cai Liu, Wenjing Liang   +4 more
doaj   +1 more source