Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.5194/isprsarchives-XL-7-W3-1375-2015 |
COMPARISON OF TWO SATELLITE IMAGING PLATFORMS FOR EVALUATING SAND DUNE MIGRATION IN THE UBARI SAND SEA (LIBYAN FAZZAN) | |
Els, A.; Merlo, S.; Knight, J. | |
通讯作者 | Els, A. |
会议名称 | 36th International Symposium on Remote Sensing of the Environment (ISRSE) |
会议日期 | MAY 11-15, 2015 |
会议地点 | Berlin, GERMANY |
英文摘要 | Sand dunes can change location, form or dimensions depending on wind direction and strength. Sand dune movements can be effectively monitored through the comparison of multi-temporal satellite images. However, not all remote sensing platforms are suitable to study sand dunes. This study compares coarse (Landsat) and fine (Worldview) resolution platforms, specifically focussing on sand dunes within the Ubari Sand Sea (Libya). Sand dune features (crest line, dune ridge basal outlines) were extracted from Landsat and Worldview 2 imagery in order to construct geomorphic maps. These geomorphic maps were then compared using image overlay and differencing, and the Root Mean Squared Error (RMSE) was used to determine if the mapped dune patterns were significantly different. It was found that Landsat is a sufficient data source when studying dune patterns within a regional sand sea, but smaller dunes identified from Worldview data were not capable of being extracted in the data sourced from Landsat. This means that for studies concerned with the dune patterns and movements within sand seas, Landsat is sufficient. But in studies where the specific dynamics of specific dunes are required, a finer resolution is required; platforms such as Worldview are needed in order to gain more detailed insight and to link the past and present day climate and environmental change. |
英文关键词 | Sand dunes Sahara Remote Sensing Libya Desertification Geomorphology |
来源出版物 | 36TH INTERNATIONAL SYMPOSIUM ON REMOTE SENSING OF ENVIRONMENT |
ISSN | 2194-9034 |
出版年 | 2015 |
卷号 | 47 |
期号 | W3 |
页码 | 1375-1380 |
EISBN | ***************** |
出版者 | COPERNICUS GESELLSCHAFT MBH |
类型 | Proceedings Paper |
语种 | 英语 |
国家 | South Africa |
收录类别 | CPCI-S |
WOS记录号 | WOS:000380531900204 |
WOS关键词 | DESERT ; TRANSPORT |
WOS类目 | Environmental Sciences ; Geography, Physical ; Remote Sensing ; Imaging Science & Photographic Technology |
WOS研究方向 | Environmental Sciences & Ecology ; Physical Geography ; Remote Sensing ; Imaging Science & Photographic Technology |
资源类型 | 会议论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/303960 |
作者单位 | Univ Witwatersrand, Sch Geog Archaeol & Environm Studies, Private Bag 3, ZA-2050 Johannesburg, South Africa |
推荐引用方式 GB/T 7714 | Els, A.,Merlo, S.,Knight, J.. COMPARISON OF TWO SATELLITE IMAGING PLATFORMS FOR EVALUATING SAND DUNE MIGRATION IN THE UBARI SAND SEA (LIBYAN FAZZAN)[C]:COPERNICUS GESELLSCHAFT MBH,2015:1375-1380. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。