COMPARISON OF THE LONGITUDINAL AND LATERAL PROFILES OF WATERCOURSES USING SONAR-BASED METHODS (ADCP) AND HYDROLOGICAL ANALOGY

  • Pavel Novák Research Institute for Soil and Water Conservation, v.v.i, Czech Republic; Faculty of Environmental Sciences, Czech University of Life Sciences in Prague, Czech Republic
  • Radek Roub Faculty of Environmental Sciences, Czech University of Life Sciences in Prague, Czech Republic
  • Tomáš hejduk Research Institute for Soil and Water Conservation, v.v.i, Czech Republic; Faculty of Environmental Sciences, Czech University of Life Sciences in Prague, Czech Republic
  • Tomáš Vybíral GEOREAL, s.r.o, Czech Republic
  • Kateřina K. Hánová Water Management Development and Construction, joint stock company, Czech Republic
  • Filip Urban Water Management Development and Construction, joint stock company, Czech Republic
Keywords: sonar, ADCP, Doppler, discharge, lateral profile, aerial laser scanning

Abstract

In many cases, a flood wave has a pronounced transforming effect on the channel, and the knowledge of the watercourse longitudinal and lateral profiles is of great importance. To obtain data meeting these requirements with adequate accuracy, we alternated the conventional geodesic methods with sonar-based approaches – ADCP – and with results from the CroSolver software, constructed for obtaining bathymetric  information. We compare results achieved from two approaches for preparing geometric data for hydrodynamic models. The respective approaches are considered as possible replacements for the costly conventional geodesic methods. The proposed methods use either data available from the continual  monitoring of surface water courses (i.e., discharge measurements), which can capture precisely the lateral  channel profile within the entire longitudinal profile, or a robust sonar-based system. Results obtained from  the conducted studies show that our statement about a possibility to synthesize the ALS data with data from hydrological measurements or ADCP sonar in preparing watercourse computational geometry, is valid. A very good agreement was achieved between lateral profiles (determined inundation areas) prepared by using the  CroSolver software or the ADCP sonar with lateral profiles established by geodesic surveying.

Published
2014-11-21
How to Cite
Novák, P., Roub, R., hejduk, T., Vybíral, T., Hánová, K., & Urban, F. (2014). COMPARISON OF THE LONGITUDINAL AND LATERAL PROFILES OF WATERCOURSES USING SONAR-BASED METHODS (ADCP) AND HYDROLOGICAL ANALOGY. AUC Geographica, 49(2), 111-119. https://doi.org/10.14712/23361980.2014.20
Section
Original Articles