Okinawa Trough geophysical and topographic modeling by GDAL utilities and GRASS GIS
Uložené v:
| Názov: | Okinawa Trough geophysical and topographic modeling by GDAL utilities and GRASS GIS |
|---|---|
| Autori: | Lemenkova, Polina |
| Prispievatelia: | Universitätsbibliothek |
| Zdroj: | Podzemni Radovi, Vol 2021, Iss 38, Pp 87-100 (2021) |
| Informácie o vydavateľovi: | Centre for Evaluation in Education and Science (CEON/CEES), 2021. |
| Rok vydania: | 2021 |
| Predmety: | Topography, 01 natural sciences, Machine Learning, gdal, Japan, Disciplines graphiques, Geoinformatics, Géographie physique, Earth Science, ruggedness, grass gis, roughness, Géodésie, QE1-996.5, GDAL, Géologie et minéralogie, Geography, Méthodes mathématiques et quantitatives, Geology, GIS, 16. Peace & justice, Sciences de la terre et du cosmos, Mapping, Disciplines auxiliaires de l'ingénieur, Volcanologie, Rauheit, Sciences exactes et naturelles, GRAS-GIS, Cartography, Systèmes d'information géographique, Topographie, Sciences de l'ingénieur, Physique du globe, Géodésie appliquée topographie [géodésie], topography, Ruggedness, Océanographie physique et chimique, 14. Life underwater, Géologie, Géomorphologie et orographie, Topography, GRASS GIS, GDAL, Roughness, Ruggedness, 0105 earth and related environmental sciences, Robustheit, Programmation et méthodes de simulation, 15. Life on land, Méthodologie de la recherche scientifique, Roughness, Sémantique des langages de programmation, 13. Climate action, Computer Science, GRASS GIS, Photogrammétrie - cartographie, Programmation du calcul numérique, Gravimétrie |
| Popis: | This paper presents using GDAL utilities and GRASS GIS for topographic analysis of the raster grids based on GEBCO DEM as NetCDF file at 15 arc-second intervals. The focus study area encompasses the area around Okinawa Trough, Ryukyu trench-arc system, southern Japan, East China Sea and the Philippine Sea, West Pacific Ocean. Several GDAL utilities were applied for data processing: gdaldem, gdalwarp, gdalinfo, gdal_translate. The data were imported to GRASS GIS via r.in.gdal. Data visualization highlighted high resolution and accuracy of GEBCO grid, enabling topographic modelling at the advanced level. The algorithm of DEM processing, implemented in GDAL utility gdaldem, was used for generating multi-purpose topographic models: aspect, hillshade, roughness and topographic indices, such as Topographic Position Index (TPI), Terrain Ruggedness Index (TRI). Thematic maps (topography, geoid, marine free-air gravity) were visualized using GRASS GIS modules for raster (d.rast, r.colors, r.contour) and vector (d.vect, v.in.region, d.legend) data processing. The results demonstrated smoother bathymetry in the East China Sea and rugged relief in the Philippine Sea which corresponds to their different geological and geophysical settings. The presented methodology of the topographic analysis based on DEM demonstrated technical aspects of GDAL and GRASS as scripting approach of advanced cartography. |
| Druh dokumentu: | Article Other literature type |
| Popis súboru: | 1 full-text file(s): application/pdf |
| Jazyk: | English |
| ISSN: | 2560-3337 0354-2904 |
| DOI: | 10.5937/podrad2138087l |
| DOI: | 10.5281/zenodo.5109998 |
| DOI: | 10.5281/zenodo.5109997 |
| Prístupová URL adresa: | https://scindeks-clanci.ceon.rs/data/pdf/0354-2904/2021/0354-29042138087L.pdf https://doaj.org/article/0577a0bf760c49f9a0af1eb12735ebc1 http://ume.rgf.bg.ac.rs/index.php/ume/article/view/154 https://scindeks-clanci.ceon.rs/data/pdf/0354-2904/2021/0354-29042138087L.pdf https://hal.archives-ouvertes.fr/hal-03289321 https://scindeks.ceon.rs/Article.aspx?artid=0354-29042138087L http://ume.rgf.bg.ac.rs/index.php/ume/article/download/154/136 https://zenodo.org/record/5109998 https://eplus.uni-salzburg.at/id/9235031 https://doi.org/10.5937/podrad2138087l https://resolver.obvsg.at/urn:nbn:at:at-ubs:3-29762 http://ssrn.com/abstract=3888343 https://doi.org/10.5937/podrad2138087l https://hdl.handle.net/11585/968007 |
| Rights: | CC BY |
| Prístupové číslo: | edsair.doi.dedup.....9fa1a0f26ad879b7d40dedf32b69d14c |
| Databáza: | OpenAIRE |
Nájsť tento článok vo Web of Science | Abstrakt: | This paper presents using GDAL utilities and GRASS GIS for topographic analysis of the raster grids based on GEBCO DEM as NetCDF file at 15 arc-second intervals. The focus study area encompasses the area around Okinawa Trough, Ryukyu trench-arc system, southern Japan, East China Sea and the Philippine Sea, West Pacific Ocean. Several GDAL utilities were applied for data processing: gdaldem, gdalwarp, gdalinfo, gdal_translate. The data were imported to GRASS GIS via r.in.gdal. Data visualization highlighted high resolution and accuracy of GEBCO grid, enabling topographic modelling at the advanced level. The algorithm of DEM processing, implemented in GDAL utility gdaldem, was used for generating multi-purpose topographic models: aspect, hillshade, roughness and topographic indices, such as Topographic Position Index (TPI), Terrain Ruggedness Index (TRI). Thematic maps (topography, geoid, marine free-air gravity) were visualized using GRASS GIS modules for raster (d.rast, r.colors, r.contour) and vector (d.vect, v.in.region, d.legend) data processing. The results demonstrated smoother bathymetry in the East China Sea and rugged relief in the Philippine Sea which corresponds to their different geological and geophysical settings. The presented methodology of the topographic analysis based on DEM demonstrated technical aspects of GDAL and GRASS as scripting approach of advanced cartography. |
|---|---|
| ISSN: | 25603337 03542904 |
| DOI: | 10.5937/podrad2138087l |