Results 21 to 30 of about 51,150 (345)
Remote Sensing, 2021 Currently available high-resolution digital elevation model (DEM) is not particularly useful to geologists for understanding the long-term changes in fluvial landforms induced by tectonic uplift, although DEMs that are generated from satellite stereo ...
Zhiheng Liu +6 more
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Frontiers in Earth Science, 2018 Open-access global Digital Elevation Models (DEM) have been crucial in enabling flood studies in data-sparse areas. Poor resolution (>30m), significant vertical errors and the fact that these DEMs are over a decade old continue to hamper our ability to ...
Laurence Hawker +3 more
semanticscholar +1 more source
A Novel Three-Dimensional Block Adjustment Method for Spaceborne InSAR-DEM Based on General Models
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023 Digital elevation model (DEM) generated by bistatic synthetic aperture radar interferometry (InSAR) usually has systematic plane and elevation errors. However, the DEM adjustment method based on the function model can only correct systematic elevation ...
Rui Wang, Xiaolei Lv, Li Zhang
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International Journal of Disaster Risk Science, 2021 Digital Elevation Models (DEMs) play a critical role in hydrologic and hydraulic modeling. Flood inundation mapping is highly dependent on the accuracy of DEMs.
Kepeng Xu +5 more
semanticscholar +1 more source
The Cryosphere, 2019 . Ocean-induced basal melting is responsible for much of the Amundsen Sea Embayment ice loss in recent decades, but the total magnitude and spatiotemporal evolution of this melt is poorly constrained.
D. Shean +4 more
semanticscholar +1 more source
DEM Void Filling Based on Context Attention Generation Model
ISPRS International Journal of Geo-Information, 2020 The digital elevation model (DEM) generates a digital simulation of ground terrain in a certain range with the usage of 3D point cloud data. It is an important source of spatial modeling information. Due to various reasons, however, the generated DEM has
Chunsen Zhang +4 more
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Improving GEDI Footprint Geolocation Using a High-Resolution Digital Elevation Model
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023 Global Ecosystem Dynamics Investigation (GEDI) is a lidar system on-board the International Space Station designed to study forest ecosystems. However, GEDI footprint low accuracy geolocation is a major impediment to the optimal benefit of the data.
A. Schleich +3 more
semanticscholar +1 more source
Evaluation of the Accuracy of Digital Elevation Model Produced from Different Open Source Data
Journal of Engineering, 2019 This study aims to estimate the accuracy of digital elevation models (DEM) which are created with exploitation of open source Google Earth data and comparing with the widely available DEM datasets, Shuttle Radar Topography Mission (SRTM), version 3, and ...
Raghad Hadi Hasan
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Airborne LiDAR-Derived Digital Elevation Model for Archaeology
Remote Sensing, 2021 The use of topographic airborne LiDAR data has become an essential part of archaeological prospection, and the need for an archaeology-specific data processing workflow is well known.
Benjamin Štular +2 more
semanticscholar +1 more source
Model zemeljskega površja - DMR ali DMV? : Earth's Digital Surface Model - DTM or DEM? [PDF]
Geodetski Vestnik, 2002 Definition of a term digital terrain model that can be shortly described as 'digital description of the Earth's surface' was analysed. Meaning and usage of terms 'digital terrain model' or shortly DTM and 'digital elevation model' or DEM were cleared up.
Tomaž Podobnikar
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