GI_Forum 2014, Volume 2 Geospatial Innovation for Society – Conference Proceedings
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Verlag der Österreichischen Akademie der Wissenschaften Austrian Academy of Sciences Press
A-1011 Wien, Dr. Ignaz Seipel-Platz 2
Tel. +43-1-515 81/DW 3420, Fax +43-1-515 81/DW 3400 https://verlag.oeaw.ac.at, e-mail: verlag@oeaw.ac.at |
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DATUM, UNTERSCHRIFT / DATE, SIGNATURE
BANK AUSTRIA CREDITANSTALT, WIEN (IBAN AT04 1100 0006 2280 0100, BIC BKAUATWW), DEUTSCHE BANK MÜNCHEN (IBAN DE16 7007 0024 0238 8270 00, BIC DEUTDEDBMUC)
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GI_Forum 2014, Volume 2 Geospatial Innovation for Society – Conference Proceedings
ISSN 2308-1708 Online Edition ISBN 978-3-87907-545-4 Print Edition ISBN 978-3-7001-7652-7 Online Edition
doi:10.1553/giscience2014
GI_Forum, Volume 1 2014, 566 pages Print edition is available at Wichmann-Verlag, Berlin
Michael Hofer,
Gernot Paulus,
Karl-Heinrich Anders
S. 77 - 86 doi:10.1553/giscience2014s77 Verlag der Österreichischen Akademie der Wissenschaften
Abstract: River water temperature is an important ecological measure and a complex phenomenon. A significant number of influencing factors with different levels of impact on the water temperature profile, and dynamic water temperature behaviour of rivers, must be considered. Critical factors represent air temperature, shade caused by riparian vegetation, flow velocity and solar radiation. In order to obtain exact water temperature values, on-site measurements have to be performed, however, it is not possible to equip every segment of the river with measuring stations. Therefore, the main goal of this project is the development of a GIS-based water temperature interpolation model that estimates the water temperature in rivers. Essential for this GIS-based model is the detailed definition of influencing factors and its spatial representation for developing an analysis model. In a first step, the target river network is segmented based on its tributaries. Segment points are set where tributaries join the major river, and therefore cause a mixing due to different water temperatures. Every segment with the calculated values regarding hydrology, geometry, meteorology, as well as shade, serves as an input for the applied water temperature interpolation tool “Stream Segment Temperature Model” (SSTEMP). This tool is used to calculate and interpolate the monthly average water temperature for every river segment. Following this procedure, pinpoint water temperatures are calculated for every river segment that can be exported to ArcGIS. Python Scripts support a semi-automated workflow to transfer all relevant geodata to the corresponding river segment where they are stored as attributes. Finally, the result can be visualized and highlighted, which enables the user to obtain modelled pinpoint water temperature information. Published Online: 2014/06/18 10:44:11 Object Identifier: 0xc1aa5576 0x0030d3ef Rights:https://creativecommons.org/licenses/by-nd/4.0/
GIS as a technology has come a long way, from
the early adoption of technical wizardry to the
ubiquitous, if unconscious use by the masses. The
emergence of a GISociety is on its way through
technological development, theoretical and empirical
scientific research and inclusion of technology
into education with increasing pedagogical justification.
Defining new dimensions of hard- and software,
brainware and orgware are all needed to
further enhance the GISociety with new geospatial
innovations.
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Verlag der Österreichischen Akademie der Wissenschaften Austrian Academy of Sciences Press
A-1011 Wien, Dr. Ignaz Seipel-Platz 2
Tel. +43-1-515 81/DW 3420, Fax +43-1-515 81/DW 3400 https://verlag.oeaw.ac.at, e-mail: verlag@oeaw.ac.at |