Results 1 to 10 of about 937 (213)

Vegetation covers change and its impact on Barchan Dune morphology in Parangtritis Coast, Indonesia [PDF]

E3S Web of Conferences, 2020
Barchan dune is a peculiar type of dune that forms in wind corridors at the Inner Zone of Parangtritis Sand Dune. Their existence is increasingly threatened by land-use changes, especially vegetation coverage.
Laksono Agung, Saputri Agatha Andriantari, Pratiwi Calvina Izumi Bunga, Arkan Muhammad Zaki, Putri Ratih Fitria   +4 more
doaj   +2 more sources

A distinct ripple-formation regime on Mars revealed by the morphometrics of barchan dunes [PDF]

Nature Communications, 2022
Dust storms on Mars drive water escape to space. Here, the authors show the impact Martian dust storms have on the abundance of atmospheric hydrogen and oxygen, and how this helps to overall oxidize the Martian atmosphere.
Lior Rubanenko, Mathieu G. A. Lapôtre, Ryan C. Ewing, Lori K. Fenton, Andrew Gunn   +4 more
doaj   +2 more sources

Analysis of the characteristics of valveless piezoelectric pump with crescent dune bluff body [PDF]

Science Progress, 2023
To improve the output flow characteristics of the piezoelectric pump in one direction, a new valveless piezoelectric pump with a crescent dune bluff body has been proposed.
Changxiong Xie, Shuaishuai Zhou, Yong Zhang, Jianchen Wang, Xiaolei Deng, Jun Yang   +5 more
doaj   +2 more sources

Dataset of turbulent flow over interacting barchan dunes [PDF]

Data in Brief
Barchans are dunes commonly found in dune fields on Earth, Mars and other celestial bodies, where they can interact with each other. This article concerns experimental data for the flow over subaqueous barchans that are either isolated or interacting ...
Jimmy G. Alvarez, Danilo S. Borges, Erick M. Franklin   +2 more
doaj   +2 more sources

Detection and tracking of barchan dunes using artificial intelligence [PDF]

Scientific Reports
Barchans are crescent-shape dunes ubiquitous on Earth and other celestial bodies, which are organized in barchan fields where they interact with each other.
Esteban A. Cúñez, Erick M. Franklin
doaj   +2 more sources

Microbial Characterization of Qatari Barchan Sand Dunes. [PDF]

PLoS ONE, 2016
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 16S rRNA gene and metagenomic sequence analysis to gain an ...
Sara Abdul Majid, Michael F Graw, Aspassia D Chatziefthimiou, Hanh Nguyen, Renee Richer, Michel Louge, Ali A Sultan, Patrick Schloss, Anthony G Hay   +8 more
doaj   +2 more sources

Analysis of movement and relationships between morphometric components of sand dunes (barchans) in the south-eastern of Iran

Acta Universitatis Carolinae Geographica, 2022
Morphology of barchan dunes plays a key role in the rate of movement of barchan dunes and accordingly, the areas that are in the path of barchan dunes can be identified.
Mehdi Feyzolahpour, Rouholah Khodaie, Hasan Ghasemlu   +2 more
doaj   +1 more source

Quantitative Study on Morphological Characteristics of Barchan Dunes in Yamarak Desert, China

Frontiers in Earth Science, 2022
Although scholars have conducted many studies on barchan dunes in deserts and sandy areas around the world, few studies have been conducted on the morphological characteristics and changes in movement patterns of barchan dunes in the Yamarak Desert ...
Jia Guang-Pu, Yang Guang, Han Xue-Ying, Zuo He-Jun, Yao Yun-Feng   +4 more
doaj   +1 more source

Automatic Detection and Segmentation of Barchan Dunes on Mars and Earth Using a Convolutional Neural Network

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
The morphology of isolated barchan dunes on Mars and Earth may shed light on the dynamic conditions that form them, their migration direction and the physical properties of the sediments composing them.
Lior Rubanenko, Sebastian Perez-Lopez, Joseph Schull, Mathieu G. A. Lapotre   +3 more
doaj   +1 more source

Real-Time Kinematic Positioning (RTK) for Monitoring of Barchan Dune Migration in the Sanlongsha Dune Field, the Northern Kumtagh Sand Sea, China

Remote Sensing, 2023
Dune migration is one of the main processes in arid lands’ geomorphology and is important for the design of windbreaks and sand fixation projects and for the monitoring of desertification dynamics. We conducted long-term continuous positioning monitoring
Xuegang Xing, Zhuanling Yang, Guangqiang Qian, Guanghong Zhou   +3 more
doaj   +1 more source