干旱区生态环境知识资源中心(Arid): Combining SfM Photogrammetry and Terrestrial Laser Scanning to Assess Event-Scale Sediment Budgets along a Gravel-Bed Ephemeral Stream

Arid

DOI	10.3390/rs12213624
	Combining SfM Photogrammetry and Terrestrial Laser Scanning to Assess Event-Scale Sediment Budgets along a Gravel-Bed Ephemeral Stream
	Conesa-Garcia, Carmelo; Puig-Mengual, Carlos; Riquelme, Adrian; Tomas, Roberto; Martinez-Capel, Francisco; Garcia-Lorenzo, Rafael; Pastor, Jose L.; Perez-Cutillas, Pedro; Cano Gonzalez, Miguel
通讯作者	Conesa-Garcia, C
来源期刊	REMOTE SENSING
EISSN	2072-4292
出版年	2020
卷号	12 期号:21
英文摘要	Stream power represents the rate of energy expenditure along a stream reach and can be calculated using topographic data acquired via structure-from-motion (SfM) photogrammetry and terrestrial laser scanning (TLS). This study sought to quantitatively relate morphological adjustments in the Azohia Rambla, a gravel-bed ephemeral stream in southeastern Spain, to stream power (omega), critical power (omega(c)), and energy gradients ( partial differential omega/ partial differential s), along different reference channel reaches of 200 to 300 m in length. High-resolution digital terrain models (HRDTMs), combined with ortophotographs and point clouds from 2018, 2019, and 2020, and ground-based surveys, were used to estimate the spatial variability of morphological sediment budgets and to assess channel bed mobility during the study period at different spatial scales: reference channel reaches (RCRs), pilot bed survey areas (PBSAs), and representative geomorphic units (RGUs). The optimized complementary role of the SfM technique and terrestrial laser scanning allowed the generation of accurate and reliable HRDTMs, upon which a 1-D hydrodynamic model was calibrated and sediment budgets calculated. The resulting high-resolution maps allowed a spatially explicit analysis of stream power and transport efficiency in relation to volumes of erosion and deposition in the RCR and PBSA. In addition, net incision or downcutting and vertical sedimentary accretion were monitored for each flood event in relation to bedforms and hydraulic variables. Sediment sources and sinks and bed armoring processes showed different trends according to the critical energy and stream power gradient, which were verified from field observations. During flows exceeding bankfull discharges (between 18 and 24 m(3) s(-1) according to channel reach), significant variations in partial differential omega/ partial differential s values and omega/omega(c) ratios (e.g., -15 < partial differential omega/ partial differential s < 15 Wm(-3); omega/omega(c) > 2 for a peak discharge of 31 m(3) s(-1)) were associated with a large amount of bedload mobilized upstream and vertical accretion along the middle reach (average rise height of 0.20 to 0.35 m for the same event). By contrast, more moderate peak flows (<= 10 m(3) s(-1)) only produced minor changes resulting in surface washing, selective transport, and local bed scouring.
英文关键词	SfM photogrammetry terrestrial laser scanning stream power morphological sediment budget bedforms gravel-bed ephemeral channel southeastern Spain
类型	Article
语种	英语
开放获取类型	gold, Green Published, Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000589358600001
WOS关键词	STRUCTURE-FROM-MOTION ; HUMAN IMPACTS ; ARID-REGION ; RIVER ; LIDAR ; CLASSIFICATION ; MORPHOLOGY ; CHANNELS ; SYSTEMS ; IMAGERY
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327511
作者单位	[Conesa-Garcia, Carmelo; Garcia-Lorenzo, Rafael; Perez-Cutillas, Pedro] Univ Murcia, Dept Phys Geog, Murcia 30001, Spain; [Puig-Mengual, Carlos; Martinez-Capel, Francisco] Univ Politecn Valencia UPV, Inst Invest Gestio Integrada Zones Costaneres IGI, Gandia 46730, Spain; [Riquelme, Adrian; Tomas, Roberto; Pastor, Jose L.; Cano Gonzalez, Miguel] Univ Alicante, Dept Civil Engn, Alicante 03080, Spain
推荐引用方式 GB/T 7714	Conesa-Garcia, Carmelo,Puig-Mengual, Carlos,Riquelme, Adrian,et al. Combining SfM Photogrammetry and Terrestrial Laser Scanning to Assess Event-Scale Sediment Budgets along a Gravel-Bed Ephemeral Stream[J],2020,12(21).
APA	Conesa-Garcia, Carmelo.,Puig-Mengual, Carlos.,Riquelme, Adrian.,Tomas, Roberto.,Martinez-Capel, Francisco.,...&Cano Gonzalez, Miguel.(2020).Combining SfM Photogrammetry and Terrestrial Laser Scanning to Assess Event-Scale Sediment Budgets along a Gravel-Bed Ephemeral Stream.REMOTE SENSING,12(21).
MLA	Conesa-Garcia, Carmelo,et al."Combining SfM Photogrammetry and Terrestrial Laser Scanning to Assess Event-Scale Sediment Budgets along a Gravel-Bed Ephemeral Stream".REMOTE SENSING 12.21(2020).