View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Springer - Publisher Connector Acta Geod. Geoph. Hung., Vol. 44(1), pp. 79–94 (2009) DOI: 10.1556/AGeod.44.2009.1.8 GEOREFERENCING THE FIRST BATHYMETRIC MAPS OF LAKE BALATON, HUNGARY AZlinszky1 and GMolnar´ 2,3 1Balaton Limnological Research Institute of the Hungarian Academy of Sciences, POB 35, H-8237 Tihany, Hungary, e-mail:
[email protected] 2Institute for Photogrammetry and Remote Sensing, Vienna University of Technology, Gußhausstraße 27–29, A-1040 Wien, Austria 3Space Research Group, Department of Geopyhsics, Institute of Earth Sciences, E¨otv¨os Lor´and University, P´azm´any P´eter s´et´any 1/A, H-1117 Budapest, Hungary, e-mail:
[email protected] Open Access of this paper is sponsored by the Hungarian Scientific Research Fund under the grant No. T47104 OTKA (for online version of this paper see www.akkrt.hu/journals/ageod) Lake Balaton is located in the Pannonian Basin, Hungary (46◦50 N, 17◦50 E), and is characterized by its large area (594 km2) and very shallow water depth (avg. 3.5 meters). The main tributary is the Zala River, which enters the western bay, and the only outlet is the Si´o River in the East. S´amuel Krieger conducted the first known survey focusing on Lake Balaton in 1776. The original purpose of S´amuel Krieger’s work was to illustrate his plans of draining and canalizing Lake Balaton. This map indicates several proposed canals and bathymetric contour lines according to a water level drop of 1, 2, or 3.33 Viennese fathoms (1 Viennese fathom = 1.89 meters).