DTM - DEM with filling of closed depressions

DEM stands for Digital Elevation Model. RASTER type data (ESRI GRID format), made up of square cells with sides of 10m. Each cell contains the Height information relating to the center of the cell itself. This version of the grid is almost identical to the basic one (dem10), but constitutes its indispensable correction to overcome the problems that any type of hydrological calculation would encounter when the flow would face a closed depression. For this reason there are various algorithms which, executed before the "launch" of the hydrological calculations, fill the closed depressions in various ways. The unit of measure is [m a.s.l.]

Data and Resources

Additional Info

Field	Value
Last Updated	April 27, 2023, 22:36 (UTC)
Created	April 27, 2023, 22:36 (UTC)
GUID	r_emiro:2013-07-12T164825
access_constraints	[]
bbox-east-long	12.908799
bbox-north-lat	45.155008
bbox-south-lat	43.675648
bbox-west-long	9.163831
contact-email	marco.pizziolo@regione.emilia-romagna.it
coupled-resource	[]
dataset-reference-date	[{"type": "publication", "value": "2008-01-01"}]
frequency-of-update	notPlanned
licence	["Restricted use of data (any other information in the 'other constraints' attribute) https://geoportale.regione.emilia-romagna.it/approfondimenti/licenze/uso-ristretto-dei-dati", "The Seismic Geological Survey e dei Suoli is the owner of the data and grants the right of use with the obligation to cite the source."]
lineage	The "Upslope Area" module of the SAGA-GIS 2.0 software (System for Automated Geoscientific Analyzes - http://www.saga-gis.org), a GIS Free Open Source Software (FOSS) produced and distributed by SAGA was calculated User Group Association (Dept of Physical Geography - Univ of Göttingen - DE). Due to the computational difficulty, the original DEM, representing the entire regional territory and beyond, was broken down into macro-basins, for each of which the flow direction and the flow accumulation were calculated . At the end of the calculation, the resulting grids were mosaiced again. For these reasons, the overall extension of this grid is lower than the starting DEM.
metadata-date	2013-07-12
metadata-language	ita
progress
resource-type	dataset
responsible-party	[{"name": "Geological, Seismic and Soil Service - Emilia-Romagna Region", "roles": ["pointOfContact"]}]
spatial	{"type": "Polygon", "coordinates": [[[9.163831, 43.675648], [12.908799, 43.675648], [12.908799, 45.155008], [9.163831, 45.155008], [9.163831, 43.675648]]]}
spatial-data-service-type
spatial-reference-system	Monte Mario / TM Emilia-Romagna
spatial_harvester	true
temporal-extent-begin	1972-01-01
temporal-extent-end	1979-12-31