Environmental and resource applications
Conclusions
With use of GIS-software more precise results from sea survey data can
be obtained than those derived with conventional methods. Substantial
inaccuracies in sea stirvey data were detected and the suitabiIity of the
data set for morphological evaluations is in question. However, the
inaccuracies could be partly quantified and corrected, and incorrect
use of the data was avoided. The uniform grid database turned out to
be easy to manage and flexible enough to allow quality assessment
which would otherwise not have proven feasible. The influence of
measurement techniques on resulting deptli could be determined and
the calculation of statistical parameters could be conducted in a time
and cost effective manner. A set of statistical parameters was calculated
and represented spatially. In principle, these parameters can be calculated
for areas of any size and cell resolution. In order to represent inaccuracies in sea survey data and small morphological modifications, the
operations were done in small grid cells. However the parameters used
can be summarized for any larger area to improve the statistical reliability. The concept of a morphodynamic zonation of the shoreface is introduced. It is based on GIS methods and quantified statistical parameters.
The results presented, the accuracy obtained, and the methods developed would not all have been possible without the use of a GIS.
Acknowledgement
This study was supported by the Bundesministerium für Bildung und Forschung
in the course of the KFKI research project ‘Morphological development in the shorefaces of the German Bight’ (03KIS308-1A). Very special thanks to Maike Puschmann, Anne Koopmann and Dirk Hermsmeyer for their part on this work.
Bibliographic references
Hofstede J., 1991. Hyclro- und Morphodynamik im Tidebereich der
Deutschen Bucht. Berliner Geographische Studien, 31, 117 p.
Hüttemeyer P, Koopmann A., Kunz H., Puschmann M., 1998. KFKI
Forschungsvorhaben “Morphologische Gestaltungsvorgange im
Küstenvorfeld der Deutschen Bucht ”, Zwischenbericht 1997.
Dienstbericht Forschungsstelle Küste 6/1998, unpubl., Norderney,
-2 PHüttemeyer R, Koopmann A., Kunz H., Puschmann M., 1999. KFKI
Forschungsvorhaben “Morphologische Gestaltungsvorgange im
Küstenvorfeld der Deutschen Bucht”, Datendokumentation und
Untersuchungen zur Verwendung von Seevermessungen des DHI/BSH
für morphologische Fragestellungen, Abschlussbericht 1999,
Dienstbericht Forschungsstelle Küste 18/1999, unpubl., Norderney,
101 p.
231
Conclusions
With use of GIS-software more precise results from sea survey data can
be obtained than those derived with conventional methods. Substantial
inaccuracies in sea stirvey data were detected and the suitabiIity of the
data set for morphological evaluations is in question. However, the
inaccuracies could be partly quantified and corrected, and incorrect
use of the data was avoided. The uniform grid database turned out to
be easy to manage and flexible enough to allow quality assessment
which would otherwise not have proven feasible. The influence of
measurement techniques on resulting deptli could be determined and
the calculation of statistical parameters could be conducted in a time
and cost effective manner. A set of statistical parameters was calculated
and represented spatially. In principle, these parameters can be calculated
for areas of any size and cell resolution. In order to represent inaccuracies in sea survey data and small morphological modifications, the
operations were done in small grid cells. However the parameters used
can be summarized for any larger area to improve the statistical reliability. The concept of a morphodynamic zonation of the shoreface is introduced. It is based on GIS methods and quantified statistical parameters.
The results presented, the accuracy obtained, and the methods developed would not all have been possible without the use of a GIS.
Acknowledgement
This study was supported by the Bundesministerium für Bildung und Forschung
in the course of the KFKI research project ‘Morphological development in the shorefaces of the German Bight’ (03KIS308-1A). Very special thanks to Maike Puschmann, Anne Koopmann and Dirk Hermsmeyer for their part on this work.
Bibliographic references
Hofstede J., 1991. Hyclro- und Morphodynamik im Tidebereich der
Deutschen Bucht. Berliner Geographische Studien, 31, 117 p.
Hüttemeyer P, Koopmann A., Kunz H., Puschmann M., 1998. KFKI
Forschungsvorhaben “Morphologische Gestaltungsvorgange im
Küstenvorfeld der Deutschen Bucht ”, Zwischenbericht 1997.
Dienstbericht Forschungsstelle Küste 6/1998, unpubl., Norderney,
-2 PHüttemeyer R, Koopmann A., Kunz H., Puschmann M., 1999. KFKI
Forschungsvorhaben “Morphologische Gestaltungsvorgange im
Küstenvorfeld der Deutschen Bucht”, Datendokumentation und
Untersuchungen zur Verwendung von Seevermessungen des DHI/BSH
für morphologische Fragestellungen, Abschlussbericht 1999,
Dienstbericht Forschungsstelle Küste 18/1999, unpubl., Norderney,
101 p.
231