Have a personal or library account? Click to login
The conversion of heights of the benchmarks of the detailed vertical reference network into the PL-EVRF2007-NH frame Cover

The conversion of heights of the benchmarks of the detailed vertical reference network into the PL-EVRF2007-NH frame

Open Access
|Jan 2020

Figures & Tables

Figure 1

Distribution of height differences between mean-tide and zero-tide systems in Poland [cm] (own study based on Mäkinen (2008))
Distribution of height differences between mean-tide and zero-tide systems in Poland [cm] (own study based on Mäkinen (2008))

Figure 2

Height differences ΔH between the Kronstad’60 and PL-EVRF2007-NH frames of the points of the basic reference network of Kętrzyn district along the N–S profile
Height differences ΔH between the Kronstad’60 and PL-EVRF2007-NH frames of the points of the basic reference network of Kętrzyn district along the N–S profile

Figure 3

The scheme of distribution of the points of basic reference network used for the construction of the model of height conversion from Kronstadt’60 to PL-EVRF2007-NH in the area of Kętrzyn district (height difference iso-lines are given in m)
The scheme of distribution of the points of basic reference network used for the construction of the model of height conversion from Kronstadt’60 to PL-EVRF2007-NH in the area of Kętrzyn district (height difference iso-lines are given in m)

The assessment of the accuracy of the model ΔHKronstadt′60–KRON86: raw data (the points of the reference network) and after adjustments (the Danish method)

ParameterRaw dataThe Danish method
Average [cm]–8.2–8.2
Deviation [cm]0.90.6
Maximum [cm]–6.4–6.9
Minimum [cm]–10.5–9.6
Curtosis–0.11–0.04
Skewness–0.24–0.01

The recommendations of the GUGiK concerning the conversion of heights depending on the state of data in districts (Somla, 2018)

CaseThe state of the reference networkRecommended method of height calculationGross cost [PLN/point]a
1
  • has been modernised;

  • the height in the PL-KRON86-NH frame;

  • digitalised elevations.

Adjustment in PL-EVRF2007-NH frame10
2
  • not modernised;

  • heights in the Kronstadt’86 frame;

  • there are data on elevations in levelling lines.

Performing control measurements, data verification and adjustment in the PL-EVRF2007-NH frame50
3
  • not modernised;

  • heights in different frames;

  • incomplete archival material.

Modernisation of the reference network and adjustment in the PL-EVRF2007-NH frame700

Characteristics of selected elevation frames in Poland

The name of elevation frameMeasurement campaignAverage error after adjustment [mm/km]Characteristics of the frame
Kronstadt’60 (Wyrzykowski, 1993)1947–19580.78
  • normal heights;

  • gravimetric system Poczdam;

  • Kronstadt level;

  • mean-tide.

Kronstadt’86 (Kowalczyk and Rapinski, 2012; Łyszkowicz, 2012)1974–19820.84
  • normal heights;

  • gravimetric system IGSN71;

  • Kronstadt level;

  • tide-free.

Kronstadt’2006a (Gajderowicz, 2007; Kowalczyk and Rapinski, 2012)1999–2002b0.88
  • normal heights;

  • gravimetric system IGSN71;

  • Kronstadt level;

  • tide-free.

PL-KRON86-NH (Somla, 2018)1974–19821999–20020.91
  • normal heights;

  • gravimetric system IGSN71;

  • Kronstadt level;

  • tide-free.

PL-EVRF2007-NH (Mäkinen, 2008; Somla, 2018)1999–20120.91
  • normal heights;

  • gravimetric system GRS’80;

  • Amsterdam level;

  • zero-tide.

DOI: https://doi.org/10.2478/rgg-2020-0001 | Journal eISSN: 2391-8152 | Journal ISSN: 0867-3179
Language: English
Page range: 1 - 7
Submitted on: Sep 26, 2019
Accepted on: Dec 23, 2019
Published on: Jan 17, 2020
Published by: Warsaw University of Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 2 issues per year

© 2020 Łukasz Borowski, Piotr Banasik, published by Warsaw University of Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.