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Detailed gravimetric quasigeoid QGZÚ-2013

Detailed gravimetric quasigeoid QGZÚ-2013 represents a transformation surface enabling transformation between altitudes H in the Baltic Vertical Datum – After Adjustment (Bpv) and ellipsoidal heights h in the European Terrestrial Reference System 1989 (ETRS89) /realization ETRF2000/ above the rotating ellipsoid Geodetic Reference System 1980 (GRS80). Data content creates height anomaly zeta expressed in the nodal points of regular grid (3'' x 3'') of geographical coordinates ETRS89. Height anomalies implements own transformation relationship that has the form h = H + zeta. Total mean square error of height anomaly is on the territory of the Czech Republic 1 cm, in the mountainous terrain and in border areas (up to 10 km from the border) can reach higher values, but not more than 3 cm. Quasigeoid model was computed using combined regional solution of linear gravimetric boundary value task for the correcting gravitational potential of the Earth, with the significant contribution of complete revised dataset of detailed points of gravimetric mapping of the Czech Republic performed in the frame of geophysical mapping between 1950 – 2010, and with the other data. Model can be applied especially in a special geodetic applications, in which a detailed knowledge of the course of the height anomaly is required in the given locality. In these applications, the model enables the calculation of local transformation parameters needed for the mutual transformation of heights in the Bpv and ETRS89 reference systems in a given locality. Please note that due to the different processing procedure, the results of the coordinate transformation between the Bpv and ETRS89 reference systems using this model may in the given locality differ from the results of the transformation performed using official transformation service or application Coordinate Transformation of the Geoportal ČÚZK. To guarantee a uniform process of transformations and to achieve homogeneous results, it is necessary to use the stated applications or processing software approved by ČÚZK.



Data identification

Citation
Source name: Detailed gravimetric quasigeoid QGZÚ-2013
Alternative name: QGZU-2013
Reference datum
Reference date: 2014-01-01
Event: revision
Data identifier
Unique identifier: https://cuzk.cz/CZ-00025712-CUZK_QGZU
Contact to the organisation responsible for the data
Person name: Řezníček, Jan, Ing.
Name of the organisation: Czech Office for Surveying, Mapping and Cadastre
Responsible organisation information
Contact phone
Phone: +420 284 041 530
Fax: +420 284 041 416
Address
Delivery place: Pod sídlištěm 1800/9
City: Praha 8
ZIP code: 182 11
Country: Czech Republic
Online source
Contact hours: Mo-Fr 9:00 AM - 2:00 PM CET
Supplementary information:
Role: custodian
Other information:
Abstract: Detailed gravimetric quasigeoid QGZÚ-2013 represents a transformation surface enabling transformation between altitudes H in the Baltic Vertical Datum – After Adjustment (Bpv) and ellipsoidal heights h in the European Terrestrial Reference System 1989 (ETRS89) /realization ETRF2000/ above the rotating ellipsoid Geodetic Reference System 1980 (GRS80). Data content creates height anomaly zeta expressed in the nodal points of regular grid (3'' x 3'') of geographical coordinates ETRS89. Height anomalies implements own transformation relationship that has the form h = H + zeta. Total mean square error of height anomaly is on the territory of the Czech Republic 1 cm, in the mountainous terrain and in border areas (up to 10 km from the border) can reach higher values, but not more than 3 cm. Quasigeoid model was computed using combined regional solution of linear gravimetric boundary value task for the correcting gravitational potential of the Earth, with the significant contribution of complete revised dataset of detailed points of gravimetric mapping of the Czech Republic performed in the frame of geophysical mapping between 1950 – 2010, and with the other data. Model can be applied especially in a special geodetic applications, in which a detailed knowledge of the course of the height anomaly is required in the given locality. In these applications, the model enables the calculation of local transformation parameters needed for the mutual transformation of heights in the Bpv and ETRS89 reference systems in a given locality. Please note that due to the different processing procedure, the results of the coordinate transformation between the Bpv and ETRS89 reference systems using this model may in the given locality differ from the results of the transformation performed using official transformation service or application Coordinate Transformation of the Geoportal ČÚZK. To guarantee a uniform process of transformations and to achieve homogeneous results, it is necessary to use the stated applications or processing software approved by ČÚZK.
Purpose: Model enables application in a variety of geodetic works. It is especially aimed at the performing local transformations of heights in the given locality, for the expression of heights measured with GNSS technology or in other geometric methods in Bpv, for the mutual transformation of terrain heights between ETRS89 and Bpv in the given locality, etc.
Responsible organisation
Person name: Řezníček, Jan, Ing.
Name of the organisation: Czech Office for Surveying, Mapping and Cadastre
Responsible organisation information
Contact phone
Phone: +420 284 041 530
Fax: +420 284 041 416
Address
Delivery place: Pod sídlištěm 1800/9
City: Praha 8
ZIP code: 182 11
Country: Czech Republic
Online source
Contact hours: Mo-Fr 9:00 AM - 2:00 PM CET
Supplementary information:
Role: custodian
Maintenance info
Maintenance and update frequency: continual
Date of planned source revision: 2017-01-01
Maintenance note: Detailed gravimetric Quasigeoid QGZÚ is updated by the Land Survey Office in stages from 2013 following the update and refine of the methodology and technology of calculations, update and precising data base of detailed gravimetric mapping of the Czech Republic, Fundamental Base of Geographic Data (ZABAGED) and of other data sources.
Keywords
Keyword: Elevation
Officially registered thesaurus
Reference datum
Reference date: 2008-06-01
Event: publication
Organisation responsible for the thesaurus:
Name of the organisation: Joint Research Centre
Role: pointOfContact
Keywords
Keyword: hypsography
Officially registered thesaurus
Reference datum
Reference date: 2009-01-01
Event: publication
Organisation responsible for the thesaurus:
Name of the organisation: Czech Office for Surveying, Mapping and Cadastre
Role: pointOfContact
Keywords
Keyword: quasigeoid
Officially registered thesaurus
Reference datumOrganisation responsible for the thesaurus:
Role:
Source restriction
Access and use terms: No charges
Data registered in the National Open Data Catalogue: Yes
Type of spatial representation: textTable
Spatial resolution
Distance: 5
Source language: cze
Character set: utf8
Thematic category: elevation
Data extension
Extent information: 100 % of the Czech Republic territory, i.e. 78,866 km2.
Geographic limitations
Minimal bounding box
Westernmost coordinate: 12.09
Easternmost coordinate: 18.86
Southernmost coordinate: 48.55
Northernmost coordinate: 51.06
Time extent 2013 - 2013
Altitude extension
Minimal value: 115.0
Maximal value: 1602.0

Reference system (horizontal, vertical or temporal)

Coordinate reference system identifier
Reference system citation
Source name: ETRS89
Alternative name: ETRS89-GRS80
Reference date
Reference date: 2010-03-01
Event: revision
Other information:

Distribution

Distribution formate
Name: Blz
Version:
Distributor
Contact information:
Name of the organisation: Land Survey Office
Responsible organisation information
Contact phone
Phone: +420 284 041 605
Fax: +420 284 041 416
Address
Delivery place: Pod sídlištěm 1800/9
City: Praha 8
ZIP code: 182 11
Country: Czech Republic
Online source
Contact hours: Mo-Fr 9:00 AM - 2:00 PM CET
Supplementary information:
Role: distributor
Means of order
Charges: No charges
Transfer possibilities
Units of distribution: INSPIRE grid cell ETRS89-GRS80 level 1D
Size of transfer unit in MB: 30
Offline
Name: dvd

Data quality

Level of scope
Quality description level: series
Report - INSPIRE compliance
Test identifier: CZ-00025712-CUZK_QGZU-DQ_DomainConsistency-1
Conformity
Specification
Alternative name: DIRECTIVE 2007/2/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 14 March 2007 establishing an Infrastructure for Spatial Information in the European Community (INSPIRE)
Reference date
Reference date: 2007-04-26
Event: publication
Test description: Data set series conformity testing with INSPIRE implementing rules for spatial data sets and services interoperability.
Degree of conformity:
Report – completness – omission
Measure name: Evaluation of completeness of Czech Republic territory coverage by the data set series
Measure identification: CZ-00025712-CUZK_QGZU-DQ_CompletenessOmission-1
Measure description: Evaluation of completeness of Czech Republic territory coverage by the QGZU data set series
Date and time of the measure: 2014-09-19T12:00:00
Test result – quantitative
Value domain: %
Value: 100
Data origin
Data origin information: Quasigeoid model was computed using combined regional solution of linear gravimetric boundary value task for the correcting gravitational potential of the Earth, with the significant contribution of complete revised dataset of detailed points of gravimetric mapping of the Czech Republic performed in the frame of geophysical mapping between 1950 – 2010, and with the other data.