Results 71 to 80 of about 29,151 (185)

Evaluating Approximations of River Channel Shape Using a National Cross‐Section Database

Water Resources Research, Volume 62, Issue 5, May 2026.
Abstract Many hydrologic applications require basic information on the size and shape of river channels, but measuring cross section (XS) geometry in the field or via remote sensing can be costly and often provides only partial coverage. Given these challenges, we capitalized upon an existing data set of 46,971 XS from gaging stations to evaluate ...
C. J. Legleiter, P. J. Kinzel
wiley   +1 more source

A new extraction and grading method for underwater topographic photons of photon-counting LiDAR with different observation conditions

International Journal of Digital Earth
Spaceborne photon-counting light detection and ranging (LiDAR) have been extensively applied in shallow-water bathymetry. The density of underwater topographic photons (UTP) varies and is discontinuous due to sunlight noise, beam intensity, and seabed ...
Zhen Wen, Xinming Tang, Bo Ai, Fanlin Yang, Guoyuan Li, Fan Mo, Xiao Zhang, Jiaqi Yao   +7 more
doaj   +1 more source

Synthesis of the ICESat/ICESat-2 and CryoSat-2 observations to reconstruct time series of lake level

International Journal of Digital Earth, 2023
Synthesis of multi-satellite altimetry facilitates the acquisition of long-term changes in lake level but may induce biases due to inconsistent data sources, and thus remains largely unexplored.
Ye Feng, Leiku Yang, Pengfei Zhan, Shuangxiao Luo, Tan Chen, Kai Liu, Chunqiao Song   +6 more
doaj   +1 more source

Spatial Variability in Trace Organic Compound Reactivity During Urban River Infiltration Into an Alluvial Aquifer

Water Resources Research, Volume 62, Issue 5, May 2026.
Abstract Trace organic compounds (TrOCs) in lotic systems pose risks for ecosystem and human health. TrOCs can enter groundwater along losing river sections, yet little is known about the spatial extent of infiltration zones and the biogeochemical factors controlling the spatial variability of TrOC reactivity and removal, particularly along river‐to ...
Jonas L. Schaper, Olaf A. Cirpka, Malte Posselt, Joerg Lewandowski, Karin Meinikmann, Anke Putschew, Christiane Zarfl   +6 more
wiley   +1 more source

Mapping China’s coastal aquaculture ponds expansion with sentinel-2 images during 2017–2021

International Journal of Digital Earth
Accurately mapping large-scale areas of aquaculture ponds along China’s coastal areas is challenging. This study proposes a multi-featured decision tree method that incorporates multi-spectral indices, water inundation frequency (WIF), and object ...
Weiwei Sun, Tingting Hou, Chao Chen, Gang Yang, Binjie Chen, Xiangchao Meng, Kai Ren   +6 more
doaj   +1 more source

Identifying urban functional zones by capturing multi-spatial distribution patterns of points of interest

International Journal of Digital Earth, 2022
Urban Functional Zone (UFZ) identification is vital for urban planning, renewal, and development. Point of Interest (POI), as one of the most popular data in UFZ studies, is transformed into a geo-corpus under specific sampling strategies, which can be ...
Quan Qin, Shishuo Xu, Mingyi Du, Songnian Li   +3 more
doaj   +1 more source

Future Decline in the Buffering Effect of Canopy Water on Ecosystem Water‐Use Efficiency in Tropical Forests

Water Resources Research, Volume 62, Issue 5, May 2026.
Abstract Tropical forests are crucial for mitigating climate change through carbon sequestration and maintaining hydro‐ecological balance by regulating vegetation‐climate feedbacks. However, their ecosystem water‐use efficiency (WUE) is anticipated to decline due to intensifying water stresses, including atmospheric aridity and soil drought (SD). While
H. H. Wu, C. S. Fu, K. L. Yu, J. Y. Chen, H. W. Wu, H. X. Zhang, G. S. Yang   +6 more
wiley   +1 more source

Measuring the similarity between shapes of buildings using graph edit distance

International Journal of Digital Earth
Building data play a crucial role in geographic information science, and building shape similarity can be used for spatial inquiry, cartographic generalization, map updating, data quality assessment, and other spatial data mining applications.
Xiechun Lu, Houpu Li, Yongyang Xu, Jiangwen Liu, Zhanlong Chen   +4 more
doaj   +1 more source

Integrating Sentinel-1 and 2 with LiDAR data to estimate aboveground biomass of subtropical forests in northeast Guangdong, China

International Journal of Digital Earth, 2023
Accurate monitoring of forest aboveground biomass (AGB) is vital for sustainable forest management. Generally, the AGB is estimated by combining satellite images and field measurements.
Linjing Zhang, Xiaoxue Zhang, Zhenfeng Shao, Wenhao Jiang, Huimin Gao   +4 more
doaj   +1 more source

Varying the Combination of Hydrological Models in Time and Space: Toward a More Accurate Representation of Streamflow in Large‐Sample Hydrology

Water Resources Research, Volume 62, Issue 5, May 2026.
Abstract Accurate predictions of streamflow are needed to manage water resources, evaluate flooding risks, and support agriculture and industry. Many hydrological studies rely on a single model structure and parameter set applied uniformly across space and held fixed over time, limiting their ability to represent spatiotemporal changes in hydrological ...
C. Thébault, W. J. M. Knoben, N. Addor, A. J. Newman, M. P. Clark   +4 more
wiley   +1 more source