Validation of Recent DSM/DEM/DBMs in Test Areas in Greece Using Spirit Leveling, GNSS, Gravity and Echo Sounding Measurements
Recent Digital Surface, Elevation, and Bathymetric Models (DSM/DEM/DBM) aim to provide high-resolution and accurate height and depth information needed for a variety of surveying, geodetic, geophysical, and other applications. In this study, first we aim to validate in two test areas some of the mos...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-02-01
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| Series: | ISPRS International Journal of Geo-Information |
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| Online Access: | https://www.mdpi.com/2220-9964/12/3/99 |
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| author | Vassilios N. Grigoriadis Vassilios D. Andritsanos Dimitrios A. Natsiopoulos |
| author_facet | Vassilios N. Grigoriadis Vassilios D. Andritsanos Dimitrios A. Natsiopoulos |
| author_sort | Vassilios N. Grigoriadis |
| collection | DOAJ |
| description | Recent Digital Surface, Elevation, and Bathymetric Models (DSM/DEM/DBM) aim to provide high-resolution and accurate height and depth information needed for a variety of surveying, geodetic, geophysical, and other applications. In this study, first we aim to validate in two test areas some of the most used models, i.e., ASTER GDEM; AW3D30 DSM; Copernicus DEM; EU-DEM; GEBCO 2020; NASADEM HGT; SRTM15+ and SRTM Global, using GNSS; spirit leveling; and gravity measurements. The validation is performed along two traverses of 14.5 and 12.0 km each in Northern and Central Greece, respectively. Since these models are based on geoid heights obtained from global geopotential models, we also investigate their influence on the validation results. Next, we carry out comparisons between GEBCO 2020, SRTM15+, and the Greek Seas DTM, with depths derived from in situ coastal measurements in six different areas in Northern Greece. From the analysis, we conclude that the heights obtained from the Copernicus DEM provide the best overall results in terms of mean value and standard deviation while also showing consistent results in the two test areas. Similarly, the Greek Seas DTM shows better consistency with the measured depths in the coastal test areas. |
| first_indexed | 2024-03-11T06:27:48Z |
| format | Article |
| id | doaj.art-22d0f6c3b8ee4e84bcf005136a48d490 |
| institution | Directory Open Access Journal |
| issn | 2220-9964 |
| language | English |
| last_indexed | 2024-03-11T06:27:48Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | ISPRS International Journal of Geo-Information |
| spelling | doaj.art-22d0f6c3b8ee4e84bcf005136a48d4902023-11-17T11:28:03ZengMDPI AGISPRS International Journal of Geo-Information2220-99642023-02-011239910.3390/ijgi12030099Validation of Recent DSM/DEM/DBMs in Test Areas in Greece Using Spirit Leveling, GNSS, Gravity and Echo Sounding MeasurementsVassilios N. Grigoriadis0Vassilios D. Andritsanos1Dimitrios A. Natsiopoulos2Laboratory of Gravity Field Research and Applications (GravLab), Department of Geodesy and Surveying, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceGeospatial Technologies Laboratory, Department of Surveying and Geoinformatics Engineering, University of West Attica, 12243 Athens, GreeceLaboratory of Gravity Field Research and Applications (GravLab), Department of Geodesy and Surveying, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceRecent Digital Surface, Elevation, and Bathymetric Models (DSM/DEM/DBM) aim to provide high-resolution and accurate height and depth information needed for a variety of surveying, geodetic, geophysical, and other applications. In this study, first we aim to validate in two test areas some of the most used models, i.e., ASTER GDEM; AW3D30 DSM; Copernicus DEM; EU-DEM; GEBCO 2020; NASADEM HGT; SRTM15+ and SRTM Global, using GNSS; spirit leveling; and gravity measurements. The validation is performed along two traverses of 14.5 and 12.0 km each in Northern and Central Greece, respectively. Since these models are based on geoid heights obtained from global geopotential models, we also investigate their influence on the validation results. Next, we carry out comparisons between GEBCO 2020, SRTM15+, and the Greek Seas DTM, with depths derived from in situ coastal measurements in six different areas in Northern Greece. From the analysis, we conclude that the heights obtained from the Copernicus DEM provide the best overall results in terms of mean value and standard deviation while also showing consistent results in the two test areas. Similarly, the Greek Seas DTM shows better consistency with the measured depths in the coastal test areas.https://www.mdpi.com/2220-9964/12/3/99ASTER GDEMAW3d30 DSMCopernicus DEMEU-DEMGEBCO 2020NASADEM HGT |
| spellingShingle | Vassilios N. Grigoriadis Vassilios D. Andritsanos Dimitrios A. Natsiopoulos Validation of Recent DSM/DEM/DBMs in Test Areas in Greece Using Spirit Leveling, GNSS, Gravity and Echo Sounding Measurements ISPRS International Journal of Geo-Information ASTER GDEM AW3d30 DSM Copernicus DEM EU-DEM GEBCO 2020 NASADEM HGT |
| title | Validation of Recent DSM/DEM/DBMs in Test Areas in Greece Using Spirit Leveling, GNSS, Gravity and Echo Sounding Measurements |
| title_full | Validation of Recent DSM/DEM/DBMs in Test Areas in Greece Using Spirit Leveling, GNSS, Gravity and Echo Sounding Measurements |
| title_fullStr | Validation of Recent DSM/DEM/DBMs in Test Areas in Greece Using Spirit Leveling, GNSS, Gravity and Echo Sounding Measurements |
| title_full_unstemmed | Validation of Recent DSM/DEM/DBMs in Test Areas in Greece Using Spirit Leveling, GNSS, Gravity and Echo Sounding Measurements |
| title_short | Validation of Recent DSM/DEM/DBMs in Test Areas in Greece Using Spirit Leveling, GNSS, Gravity and Echo Sounding Measurements |
| title_sort | validation of recent dsm dem dbms in test areas in greece using spirit leveling gnss gravity and echo sounding measurements |
| topic | ASTER GDEM AW3d30 DSM Copernicus DEM EU-DEM GEBCO 2020 NASADEM HGT |
| url | https://www.mdpi.com/2220-9964/12/3/99 |
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