Results 1 to 10 of about 1,738,277 (218)
Contribution of Reverse Dune Migration to Stabilization of a Transgressive Coastal Dune Field at Lagoa Do Peixe National Park Dune Field (South of Brazil) [PDF]
Remote Sensing, 2023 Coastal dunes that transgress typically move landward, while their reverse movement is not well understood. The article discusses the study of barchan and barchanoid dunes in the Lagoa do Peixe National Park in the coastal plain of Rio Grande do Sul ...
Luana Portz +2 more
exaly +4 more sources
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 +3 more
doaj +2 more sources
Growing dune encroachment threatens the habitability of the western Nile riverbank [PDF]
Scientific ReportsSand dune encroachment poses a significant environmental challenge for peri-urban and rural communities in the North African desert, which is home to more than one-third of the region’s population.
Maysa M. N. Taha +5 more
doaj +2 more sources
Remote Sensing, 2021 While remote sensing methods have long been used for coastal and desert sand dune studies, few methods have been developed for the automated measurement of dune migration in large dune fields.
Pinliang Dong +4 more
doaj +1 more source
Inferring Airflow Across Martian Dunes From Ripple Patterns and Dynamics
Frontiers in Earth Science, 2021 Large ripples form striking patterns on the slopes of martian sand dunes which can be mapped and tracked using high-resolution optical images. The ripples vary in orientation, wavelength, plan-view morphology, and rates of migration.
D. R. Hood +6 more
doaj +1 more source
ESTIMATION OF AEOLIAN DUNE MIGRATION OVER MARTIAN SURFACE EMPLOYING HIGH PRECISION PHOTOGRAMMETRIC MEASUREMENTS [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017 At the present time, arguments continue regarding the migration speeds of Martian dune fields and their correlation with atmospheric circulation. However, precisely measuring the spatial translation of Martian dunes has been rarely successful due to the ...
J. Kim
doaj +1 more source
Coexistence of two dune scales in a lowland river [PDF]
Earth Surface Dynamics, 2023 A secondary scale of bedforms, superimposed on larger, primary dunes, has been observed in fluvial systems worldwide. This notwithstanding, very little is known about the morphological behavior and characteristics of this secondary scale. This study aims
J. Y. Zomer +2 more
doaj +1 more source
Frontiers in Environmental Science, 2022 There are several hotspots of dust production in the central Sahara, the Bodélé Depression (BD) in northern Chad is considered the largest source of aerosol dust worldwide, with the fastest Barchan dunes that migrate southwesterly.
Eslam Ali +3 more
doaj +1 more source
Diachronic analysis to detect and monitor Barchan dune migration in Ain Salah (Algeria)
Geoadria, 2022 The aim of this work is to analyze deposit patterns and their effect on urban and agricultural areas in the Ain Salah region in southern Algeria. A supervised classification of Landsat images over a 13-year period (2005, 2009, 2013, and 2017) was applied
Abdelhafid Bouzekri
doaj +1 more source
Quantified Aeolian Dune Changes on Mars Derived From Repeat Context Camera Images
Earth and Space Science, 2020 Aeolian systems are active across much of the surface of Mars and quantifying the activity of bedforms is important for understanding the modern and recent Martian environment.
Joel M. Davis +4 more
doaj +1 more source