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Utilization of satellite SAR imagery for mapping sand dunes in Kuwait

Utilization of satellite SAR imagery for mapping sand dunes in Kuwait | Nasser | Scoop.it
The effectiveness of Radarsat standard beam mode images with various incidence angles and illumination directions were investigated for their usefulness in mapping sand dunes in the Al-Huwaimiliyah mobile sand zone in NW Kuwait. The highly directiona...
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Segmentation of desert sand dunes

Segmentation of desert sand dunes | Nasser | Scoop.it
(2014). Segmentation of desert sand dunes. Remote Sensing Letters: Vol. 5, No. 11, pp. 961-970. doi: 10.1080/2150704X.2014.980916
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Quantitative Assessment of Desertification Using Landsat Data on a Regional Scale – A Case Study in the Ordos Plateau, China

Quantitative Assessment of Desertification Using Landsat Data on a Regional Scale – A Case Study in the Ordos Plateau, China | Nasser | Scoop.it
Desertification is a serious threat to the ecological environment and social economy in our world and there is a pressing need to develop a reasonable and reproducible method to assess it at different scales. In this paper, the Ordos Plateau in China was selected as the research region and a quantitative method for desertification assessment was developed by using Landsat MSS and TM/ETM+ data on a regional scale. In this method, NDVI, MSDI and land surface albedo were selected as assessment indicators of desertification to represent land surface conditions from vegetation biomass, landscape pattern and micrometeorology. Based on considering the effects of vegetation type and time of images acquired on assessment indictors, assessing rule sets were built and a decision tree approach was used to assess desertification of Ordos Plateau in 1980, 1990 and 2000. The average overall accuracy of three periods was higher than 90%. The results showed that although some local places of Ordos Plateau experienced an expanding trend of desertification, the trend of desertification of Ordos Plateau was an overall decrease in from 1980 to 2000. By analyzing the causes of desertification processes, it was found that climate change could benefit for the reversion of desertification from 1980 to 1990 at a regional scale and human activities might explain the expansion of desertification in this period; however human conservation activities were the main driving factor that induced the reversion of desertification from 1990 to 2000.
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assessment of desertification using Landsat Data

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Change Detection of Desert Sand Dunes: A Remote Sensing Approach

Change Detection of Desert Sand Dunes: A Remote Sensing Approach | Nasser | Scoop.it
Deserts are one of the major landforms on the
Earth. While deserts occupy about one-fifth of Earth’s land surface, they have been studied to a
much lesser extent. All over the world, desert landforms are expanding ever
rapidly and more and more human settlements are finding place in desert regions
for habitation. Thus, quantifying and monitoring dunes becomes more relevant
from a managerial perspective. Analyzing desert areas using satellite imagery
is a challenging task due to weak textural differences and nearly homogeneous
spectral responses in most parts of the terrain. In this paper, a
post-clustering methodology for change detection of desert sand dunes is proposed.
Features based on Radon spectrum are used to cluster dunes of various
orientations. These clustered boundaries are used to detect if there are any
changes occurring in the dune regions. In the experiments, remote sensing data
covering various dune regions of the world are observed for possible changes in
dune orientations. In all the cases, it is seen that there are no major changes
in desert dune orientations since three decades.
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Sand dunes monitoring using remote sensing and GIS techniques for some sites in Iraq

This study is aimed at monitoring, mapping and assessing the sand dune encroachment in the northern central part of Iraq. The study area includes six districts suffering from the increasing...
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sand dunes monitoring using RS and GIS

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Remotely sensed dune celerity and sand flux measurements of the world's fastest barchans (Bodélé, Chad) - Vermeesch - 2008 - Geophysical Research Letters - Wiley Online Library

Remotely sensed dune celerity and sand flux measurements of the world's fastest barchans (Bodélé, Chad) - Vermeesch - 2008 - Geophysical Research Letters - Wiley Online Library | Nasser | Scoop.it
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Retrieving sand dune movements using sub-pixel correlation of multi-temporal optical remote sensing imagery, northwest Sinai Peninsula, Egypt

Retrieving sand dune movements using sub-pixel correlation of multi-temporal optical remote sensing imagery, northwest Sinai Peninsula, Egypt | Nasser | Scoop.it
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Retrieving sand dune movements using remote sensing

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Remote sensing and spatial analysis of aeolian sand dunes: a review and outlook | Griffith University

Remote sensing and spatial analysis of aeolian sand dunes: a review and outlook | Griffith University | Nasser | Scoop.it
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RS of sand dunes

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Desertification and Risk Analysis Using High and Medium Resolution Satellite Data

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desertification analysis using remote sensing

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Remote sensing and spatial analysis of aeolian sand dunes: A review and outlook

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Sand dunes

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