Estimation of ancient and future shoreline positions in the vicinity of Olkiluoto, an island on the western coast of Finland: The difference between Grid and TIN based GIS-approaches

Mäkiaho, Jari-Pekka

doi:10.1016/j.palaeo.2007.05.009

Cited by 4 publications

(4 citation statements)

References 32 publications

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“…The selection of TIN method was based on e.g. Burrough & McDonnell (1998), Oksanen (1998), Leverington et al (2002) and Mäkiaho (2007), who noted that the TIN interpolation works best when creating digital topography from irregularly spaced data points with variable elevation. In addition, Oksanen (1998) previously tested that TIN model and trend surface interpolations are the most suitable methods to interpolate the geographically varying level of the ancient shorelines of the Baltic Sea basin in Finland.…”

Section: Shoreline Reconstructionsmentioning

confidence: 99%

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Development of an ancient shoreline database to reconstruct the Litorina Sea maximum extension and the highest shoreline of the Baltic Sea basin in Finland

Ojala¹,

Palmu²,

Åberg³

et al. 2013

Bull Geol Soc Finland

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An ArcGIS geodatabase called the Ancient Shoreline Database (ASD) was developed for the study and interpretation of ancient shorelines and shoreline displacement information. It was further divided into the Isolation Database (ISD) and Shoreline Landform Database (SLD) based on the characteristics of the available information. In the current study, observations related to the maximum extension of the Litorina Sea and the highest shoreline in Finland were carefully recorded and classified in the ASD. A total of 1625 shoreline observations were stored in the ASD, of which 106 were stratigraphic data points from dated isolation horizons (ISD) and the remaining 1519 were data points representing morphological shoreline observations (SLD). This paper describes the content of the ASD in terms of the variability and reliability of collated data points, but also introduces how modern LiDAR-based digital elevation models were utilized in validating the published observations as well as in interpreting new data points related to ancient shorelines from areas lacking information. The compiled ASD was used to reconstruct the diachronous maximum extension of the Litorina Sea and the highest shoreline of the Baltic Sea basin in Finland.

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Section: Shoreline Reconstructionsmentioning

confidence: 99%

“…In addition, many other applications benefit from information on shoreline displacement, such as approximation of the past and the future sea level scenarios or investigating neotectonic deformations of the Earth's crust (e.g. Mäkiaho, 2007). …”

Section: Introductionmentioning

confidence: 99%

Development of an ancient shoreline database to reconstruct the Litorina Sea maximum extension and the highest shoreline of the Baltic Sea basin in Finland

Ojala¹,

Palmu²,

Åberg³

et al. 2013

Bull Geol Soc Finland

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“…The dates were calibrated with Calib 5.5 software (Stuiver et al 2009). The various developmental stages, their spatial extents, and volumes of the lake were depicted with palaeotopographical GIS methods (Mann et al 1999;Leverington et al 2002;Mäkiaho 2007), using direction 305° as the maximum tilting axis. Topographic data required in these analyses were extracted and compiled from official National Land Survey digital products.…”

Section: Methodsmentioning

confidence: 99%

“…The area of Lake Pielinen used in this study is 927 km^, which is 3.6% larger than the offlcial area of 894 km( Ymparisto.fl 2010). The difference is caused by the fact that the method used here for spatial analysis is based on 100 X 100 m grids, covering numerous small islands whose total area is excluded from the data (see Mäkiaho 2007). This same methodological error concerns all values given in Table 1, which are thus slightly too high.…”

Section: Modern Lakementioning

confidence: 99%

Tilting of Lake Pielinen, eastern Finland – an example of extreme transgressions and regressions caused by differential post-glacial isostatic uplift

Seppä¹,

Tikkanen²,

Mäkiaho³

2012

Estonian J. Earth Sci.

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Tilting of large lakes due to differential isostatic uplift in the glaciated regions of the Northern Hemisphere is a well-documented process. With the help of accurate digital elevation models and spatial GIS analysis techniques, the resulting hydrological changes, including shifts in the outlets and changes in the size and configuration of lakes, can now be mapped and calculated more precisely than before. As a case study to highlight the magnitude of such changes in Fennoscandia, we investigated and reinterpreted the Holocene palaeogeography and palaeohydrology of Lake Pielinen in eastern Finland. This lake is currently 99 km long and located parallel to the direction of land uplift, being thus particularly sensitive to the impacts of tilting. Our results show that the lake was formed at the end of the regional deglaciation, following drainage of a local ice-dammed lake. In its initial stage until 10 200 cal yr BP, the outlet of the newly-formed lake was located in its northwestern end, but the tilting led to a major water level transgression in the basin, eventually causing formation of a new outlet over the southeastern threshold. The lake area was 143 km long and its area was 1998 km2 at the time of formation of the southeastern outlet at 10 200 cal yr BP. The lake level has been regressive throughout the basin during the last 10 200 years. This regression will continue for approximately another 10 000 years until all the glacial isostatic adjustment has occurred, after which Lake Pielinen will be only 89 km long and 565 km2 in area

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Geographic Information Systems and Spatial Analysis for Coastal Ecosystem Research and Management

Wang

Zhou²,

Yang³

Lecture Notes in Geoinformation and Cartography

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Estimation of ancient and future shoreline positions in the vicinity of Olkiluoto, an island on the western coast of Finland: The difference between Grid and TIN based GIS-approaches

Cited by 4 publications

References 32 publications

Development of an ancient shoreline database to reconstruct the Litorina Sea maximum extension and the highest shoreline of the Baltic Sea basin in Finland

Development of an ancient shoreline database to reconstruct the Litorina Sea maximum extension and the highest shoreline of the Baltic Sea basin in Finland

Tilting of Lake Pielinen, eastern Finland – an example of extreme transgressions and regressions caused by differential post-glacial isostatic uplift

Geographic Information Systems and Spatial Analysis for Coastal Ecosystem Research and Management

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