Science goals and objectives for the Dragonfly Titan rotorcraft relocatable lander

JW Barnes, EP Turtle, MG Trainer… - The Planetary …, 2021 - iopscience.iop.org
NASA's Dragonfly mission will send a rotorcraft lander to the surface of Titan in the mid-
2030s. Dragonfly's science themes include investigation of Titan's prebiotic chemistry …

Moss-dominated biological soil crusts significantly influence soil moisture and temperature regimes in semiarid ecosystems

B Xiao, K Hu, T Ren, B Li - Geoderma, 2016 - Elsevier
Biological soil crusts (BSCs) have been recognized as a vital influence factor to desert
terrestrial ecosystems under semiarid climate. However, their effects on soil moisture and …

The mechanism of soil nitrogen transformation under different biocrusts to warming and reduced precipitation: From microbial functional genes to enzyme activity

R Hu, X Wang, J Xu, Y Zhang, Y Pan, X Su - Science of the Total …, 2020 - Elsevier
Soil nitrogen (N) mineralization is a microbially-mediated biogeochemical process that is
strongly influenced by changing climates. However, little information is available on the …

Indirect root distribution characterization using electrical resistivity tomography in different soil conditions

Y Giambastiani, A Errico, F Preti, E Guastini… - Urban Forestry & Urban …, 2022 - Elsevier
Root cohesion (Cv) represents a fundamental parameter for the stability of a tree as well as
for the vegetation contribution to slope stability. Therefore, the finding of information …

Comparing dune migration measured from remote sensing with sand flux prediction based on weather data and model, a test case in Qatar

S Michel, JP Avouac, F Ayoub, RC Ewing… - Earth and Planetary …, 2018 - Elsevier
This study explores validating and calibrating the wind regime predicted by Global
Circulation Models (GCM) on Earth and other planets using optical remote sensing of dune …

Water Vapor Transport Across an Arid Sand Surface—Non‐Linear Thermal Coupling, Wind‐Driven Pore Advection, Subsurface Waves, and Exchange With the …

MY Louge, A Valance, J Xu… - Journal of …, 2022 - Wiley Online Library
Although vapor exchanged across hyper‐arid surfaces without free liquid affects the water
budget of sand seas, its mechanism is poorly documented for want of accurate instruments …

Evolution of turbulent boundary conditions on the surface of large barchan dunes: Anomalies in aerodynamic roughness and shear velocity, aeolian threshold, and the …

MY Louge, A Valance, J Fang… - Journal of …, 2024 - Wiley Online Library
We recorded aerodynamic roughness and shear velocity along transects on and around
mature crescent‐shaped barchan dunes of 4.5 m 4.5\mathrmm and 27 m 27\mathrmm …

Microbial characterization of Qatari Barchan sand dunes

S Abdul Majid, MF Graw, AD Chatziefthimiou… - PLoS …, 2016 - journals.plos.org
This study represents the first characterization of sand microbiota in migrating barchan sand
dunes. Bacterial communities were studied through direct counts and cultivation, as well as …

Meteorite reconnaissance in Saudi Arabia

BA Hofmann, E Gnos, AJT Jull, S Szidat… - … & Planetary Science, 2018 - Wiley Online Library
Abstract Meteorite searches in Saudi Arabia between 2008 and 2014 yielded 46 meteorites
from the Yabrin area (23° N 49° E), 35 meteorites from the Rub'al‐Khali sand desert (19° …

Basal pressure variations induced by a turbulent flow over a wavy surface

P Claudin, M Louge, B Andreotti - Frontiers in Physics, 2021 - frontiersin.org
Turbulent flows over wavy surfaces give rise to the formation of ripples, dunes and other
natural bedforms. To predict how much sediment these flows transport, research has …