Results 41 to 50 of about 24,399 (259)

Emergent Spinning and Orbital Motion in Clustered Wind‐Assisted Flyers

Advanced Science, EarlyView.
Inspired by natural snowflake geometries, paper‐cut flyers exhibit geometry‐defined spinning and orbital motions during cluster formation in a wind tunnel. Collective flights of multiple paperflakes reveal dynamic clustering, fragmentation, and continuously evolving spin behaviors.
Bingnan Zhou, Rahul Chand, Fahad Ahmed Korai, Jianfeng Yang, Valtteri Savonen, Fan Liu, Qi Yang, Hao Zeng   +7 more
wiley   +1 more source

Density of snow under the canopy of artificial spruce stands in the Middle Urals [PDF]

Сибирский лесной журнал
The comparison of snow density in small open spaces adjacent to forest stands and under the canopy of spruce stands located on the macroslopes of the Middle Urals of the eastem end westem expositions was carried out. It was found that the density of snow
O. V. Tolkach, G. G. Terekhov, N. N. Terinov   +2 more
doaj   +1 more source

Advances in newly-fallen snow density research

暴雨灾害, 2020
The prediction of newly-fallen snow depth is a key and difficult task for winter meteorological service in Northern China. The es-timation of newly-fallen snow density is its essential technology. In this paper we review the important influencing factors
Ying GONG, Xiaoshan ZHOU, Xiao PAN, Hua BAI   +3 more
doaj   +1 more source

Snow probe for in situ determination of wetness and density [PDF]

IEEE Transactions on Geoscience and Remote Sensing, 1994
The amount of water present in liquid form in a snowpack exercises a strong influence on the radar and radiometric responses of snow. Conventional techniques for measuring the liquid water content m/sub /spl upsi// suffer from various shortcomings, which include poor accuracy, long analysis time, poor spatial resolution, and/or cumbersome and ...
John R. Kendra, Fawwaz T. Ulaby, Kamal Sarabandi   +2 more
openaire   +1 more source

Drop‐Location‐Insensitive Droplet‐Based Electricity Generator Using Polydimethylsiloxane Slippery Covalently Attached Liquid Coatings

Advanced Science, EarlyView.
Drop‐location sensitivity remains a key barrier to practical droplet‐based electricity generators (DEGs). Here, a polydimethylsiloxane slippery covalently attached liquid (PDMS‐SCAL)‐coated interface promotes droplet sliding instead of splitting or bouncing, allowing stable electricity generation from randomly falling raindrops. The resulting PDMS‐SCAL‐
Jung Bin Yang, Donghyeon Yoo, Hideaki Teshima, Donghan Lee, Dongwhi Choi, Dong Rip Kim, Nenad Miljkovic   +6 more
wiley   +1 more source

A Time Series of Snow Density and Snow Water Equivalent Observations Derived From the Integration of GPR and UAV SfM Observations

Frontiers in Remote Sensing, 2022
Snow depth can be mapped from airborne platforms and measured in situ rapidly, but manual snow density and snow water equivalent (SWE) measurements are time consuming to obtain using traditional survey methods.
Daniel McGrath, Randall Bonnell, Lucas Zeller, Alex Olsen-Mikitowicz, Ella Bump, Ryan Webb, Hans-Peter Marshall   +6 more
doaj   +1 more source

Groundwater Rise Sustains the World's Largest Alpine Water System Under Global Warming

Advanced Science, EarlyView.
Shallow groundwater depth (SGWD) across the non‐permafrost plains of the Qinghai–Xizang Plateau decreased at averagely 0.02 m year−1, adding 31.44 Gt of freshwater storage from 2000 to 2020 and sustaining ∼53 500 km2 of alpine ecosystems. A vadose‐zone capacity of 426.6 Gt reveals these aquifers as promising reservoirs, highlighting groundwater's ...
Jianqing Du, Zhixiang Niu, Yanfen Wang, Shirui Zhou, Youqing Yang, Xiang Wei, Haishan Niu, Yitao Zhang, Anquan Xia, Yali Liu, Yanbin Hao, Kai Xue, Bingfang Wu, Xinquan Zhao, Tandong Yao, Yiyu Chen   +15 more
wiley   +1 more source

Phylogenomic insights into the genus Tulipa (Liliaceae): Taxonomy, evolution, and biogeography

American Journal of Botany, EarlyView.
Abstract Premise Tulips are one of the best‐known geophytes, but their taxonomy remains convoluted and their evolutionary history poorly understood. Here, we used plastid genomes to identify some issues with current classification, understand the diversification history of the genus, and identify potential species linked to historical cultivation ...
Brett Wilson, Maarten J. M. Christenhusz, Nathanael Walker‐Hale, Natalya Beshko, Mariyo Boboev, Colin Clubbe, Davron Dekhkonov, Aibek Dolotbakov, Mehmet Firat, Thomas Freeth, Sjaak de Groot, Avni Hajdari, Georgy A. Lazkov, Ormon Sultangaziev, Komiljon S. Tojibaev, Ben J. M. Zonneveld, Kaiyrkul T. Shalpykov, Samuel F. Brockington   +17 more
wiley   +1 more source

Hemiparasitic Castilleja presence is correlated with increased plant biodiversity across montane plant communities

American Journal of Botany, EarlyView.
Abstract Premise Root hemiparasites form haustoria in belowground roots of hosts to extract nutrients and water from the surrounding hosts. Through parasitic symbiosis, these plants disproportionately affect plant communities relative to their abundance by reducing host size, altering nutrient flow, and eventually increasing local biodiversity.
Jordan C. Argrett, Makena Lang, Anders Hastings, Y. Anny Chung, Nina Wurzburger, Charles F. Williams   +5 more
wiley   +1 more source

Spatially distributed snow depth, bulk density, and snow water equivalent from ground-based and airborne sensor integration at Grand Mesa, Colorado, USA [PDF]

The Cryosphere
Estimating snow mass in the mountains remains a major challenge for remote-sensing methods. Airborne lidar can retrieve snow depth, and some promising results have recently been obtained from spaceborne platforms, yet density estimates are required to ...
T. G. Meehan, T. G. Meehan, A. Hojatimalekshah, H.-P. Marshall, E. J. Deeb, S. O'Neel, S. O'Neel, D. McGrath, R. W. Webb, R. Bonnell, M. S. Raleigh, C. Hiemstra, K. Elder   +12 more
doaj   +1 more source