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| Titel |
Comparing records with related chronologies |
| VerfasserIn |
Christopher Bronk Ramsey, Paul Albert, Rebecca Kearney, Richard A. Staff |
| Konferenz |
EGU General Assembly 2016
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 18 (2016) |
| Datensatznummer |
250124615
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| Publikation (Nr.) |
 EGU/EGU2016-4074.pdf |
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| Zusammenfassung |
| In order to integrate ice, terrestrial and marine records, it is necessary to deal with records on
different timescales. These timescales can be grouped into those that use a common
fundamental chronometer (such as Uranium-Thorium dating or Radiocarbon) and can also be
related to one another where we have chronological tie points such as tephra horizons. More
generally we can, through a number of different methodologies, derive relationships between
different timescales. A good example of this is the use of cosmogenic isotope production,
specifically 10Be and 14C to relate the calibrated radiocarbon timescale to that of the
Greenland ice cores.
The relationships between different timescales can be mathematically expressed in terms
of time-transfer functions. This formalism allows any related record to be considered against
any linked timescale with an appropriate associated uncertainty. The prototype INTIMATE
chronological database allows records to be viewed and compared in this way and this is
now being further developed, both to include a wider range of records and also
to provide better connectivity to other databases and chronological tools. These
developments will also include new ways to use tephra tie-points to constrain the
relationship between timescales directly, without needing to remodel each associated
timescale.
The database as it stands allows data for particular timeframes to be recalled and plotted
against any timescale, or exported in spreadsheet format. New functionality will be added to
allow users to work with their own data in a private space and then to publish it when it has
been through the peer-review publication process. In order to make the data easier to use for
other further analysis and plotting, and with data from other sources, the database will also
act as a server to deliver data in a JSON format. The aim of this work is to make the
comparison of integrated data much easier for researchers and to ensure that good practice in
qualifying chronological uncertainty in record comparison is much more widespread. |
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