Using the Nordic Geodetic Observing System for land uplift studies
Geodetic observing systems have been planned and developed during the last decade. An ideal observing system consists of a network of geodetic observing stations with several techniques at the same site, publicly accessible databases, and as a product delivers data time series, combination of techn...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2014-07-01
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| Series: | Solid Earth |
| Online Access: | http://www.solid-earth.net/5/673/2014/se-5-673-2014.pdf |
| Summary: | Geodetic observing systems have been planned and developed during the last
decade. An ideal observing system consists of a network of geodetic
observing stations with several techniques at the same site, publicly
accessible databases, and as a product delivers data time series,
combination of techniques or some other results obtained from the data sets.
Globally, there is the International Association of Geodesy (IAG) Global
Geodetic Observing System (GGOS), and there are ongoing attempts to create
also regional observing systems. In this paper we introduce one regional
system, the Nordic Geodetic Observing System (NGOS) hosted by the Nordic
Geodetic Commission (NKG).
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Data availability and accessibility are one of the major issues today. We
discuss in general data-related topics, and introduce a pilot database
project of NGOS. As a demonstration of the use of such a database, we apply
it for postglacial rebound studies in the Fennoscandian area. We compare
land uplift values from three techniques, GNSS, tide gauges and absolute
gravity, with the Nordic Geodetic Commission NKG2005LU land uplift model for
Fennoscandia. The purpose is to evaluate the data obtained from different
techniques and different sources and get the most reliable values for the
uplift using publicly available data.
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The primary aim of observing systems will be to produce data and other
products needed by multidisciplinary projects, such as Upper Mantle Dynamics
and Quaternary Climate in Cratonic Areas (DynaQlim) or the European Plate
Observing System (EPOS), but their needs may currently exceed the scope of
an existing observing system. We discuss what requirements the projects pose
to observing systems and their development. To make comparisons between
different studies possible and reliable, the researcher should document what
they have in detail, either in appendixes, supplementary material or some
other available format. |
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| ISSN: | 1869-9510 1869-9529 |