干旱区生态环境知识资源中心(Arid): Assessing complex aeolian dune field morphology and evolution with Sentinel-1 SAR imagery-Possibilities and limitations

Arid

DOI	10.1016/j.aeolia.2023.100876
	Assessing complex aeolian dune field morphology and evolution with Sentinel-1 SAR imagery-Possibilities and limitations
	Boemke, Bruno; Turki, Imen; Bruell, Catrina; Lehmkuhl, Frank
通讯作者	Boemke, B
来源期刊	AEOLIAN RESEARCH
ISSN	1875-9637
EISSN	2212-1684
出版年	2023
卷号	62
英文摘要	Aeolian dune movement poses a threat to critical infrastructure, urban areas, water resources as well as agriculture. This threat is expected to increase in the coming years due to land degradation, desertification and climate change. Several approaches have been used to investigate the evolution of dune fields. Satellite remote sensing can be considered one of the most accurate tools for the continuous monitoring of global sand covered surfaces. Although early studies found a great potential in synthetic aperture radar (SAR) for dune assessment, the full potential has not been explored as of yet. Therefore, in this study, we present a novel method for assessing complex dune field morphology based on the easily accessible and globally available Sentinel-1 ground range detected (GRD) SAR dataset. In this application, dune features are extracted based on backscatter properties related to the local incidence angle. This provides a clear identification of (1) active dune sand, (2) dune ridges and (3) inter-dune ripples. By extracting these features through profiles, the multi-timescale evolution of the Western Mongolian dune field Bor Khyar was analysed through three areas of interest (AOIs) based on the spectral technique of continuous wavelets. The result of this investigation gives new insights into the temporal and spatial dynamics of dunes scale and their response to aeolian activity, revealing differences in aeolian activity as well as inter- and intra-annual variations in the dune morphology. These results are promising and highlight the potential in using satellite SAR imagery for dune monitoring.
英文关键词	Sentinel-1 satellite imagery Google Earth Engine Aeolian dunes Dune morphology Continuous wavelet transform Multi-timescale variability
类型	Article
语种	英语
开放获取类型	Green Published, hybrid
收录类别	SCI-E
WOS记录号	WOS:001006363300001
WOS关键词	RADAR BACKSCATTER ; SAUDI-ARABIA ; SAND DUNES ; DESERTIFICATION ; DYNAMICS ; MONGOLIA ; HAZARDS ; SAHEL
WOS类目	Geography, Physical
WOS研究方向	Physical Geography
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394986
推荐引用方式 GB/T 7714	Boemke, Bruno,Turki, Imen,Bruell, Catrina,et al. Assessing complex aeolian dune field morphology and evolution with Sentinel-1 SAR imagery-Possibilities and limitations[J],2023,62.
APA	Boemke, Bruno,Turki, Imen,Bruell, Catrina,&Lehmkuhl, Frank.(2023).Assessing complex aeolian dune field morphology and evolution with Sentinel-1 SAR imagery-Possibilities and limitations.AEOLIAN RESEARCH,62.
MLA	Boemke, Bruno,et al."Assessing complex aeolian dune field morphology and evolution with Sentinel-1 SAR imagery-Possibilities and limitations".AEOLIAN RESEARCH 62(2023).