Minoan chronology workshop, Sonderborg 10 11 2007
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Minoan chronology workshop, Sonderborg 10 11 2007

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Slides I gave at the workshop on Minoan chronology, organizer by Aarhus University at Sonderborg, Denmark, in November 2007

Slides I gave at the workshop on Minoan chronology, organizer by Aarhus University at Sonderborg, Denmark, in November 2007

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Minoan chronology workshop, Sonderborg 10 11 2007 Minoan chronology workshop, Sonderborg 10 11 2007 Presentation Transcript

  • A point in space, a moment in time: towards an integrated view of the Santorini eruption Stuart Dunn Centre for e-Research, King’s College London Santorini Chronology Workshop, Aarhus, 10th November 2007
  • Objectives:
    • Overview of tephra fallout
    • Consistent representation of data
    • Estimation of bulk volume of ejecta
    • Towards ‘encoding archaeology’ - associating archaeological and natural sciences data spatially and temporally
  • Constructing a geodatabase of Theran tephra
  • Constructing a geodatabase of Theran tephra
  • Constructing a geodatabase of Theran tephra
  • Constructing a geodatabase of Theran tephra: problems
    • Accuracy and (versus) precision
    • Georeferencing from heterogeneous formats
  • Constructing a geodatabase of Theran tephra: problems
    • Accuracy and (versus) precision
    • Georeferencing from heterogeneous formats and sources
    • Assessing deposition process
    • Harmonizing points, sections and stratigraphies
    • Georeferencing places
      • formal, based on lat/long or other mathematical expressions
      • Informal , based on placenames, and/or where no formal mathematical identifier is present
    24.87 34.87
  • Estimation of bulk volume of ejecta
    • Geographical Information Systems (GIS)
    • Triangulated Irregular Network (TIN)
    ‘ Conceptually like bending a sheet of rubber to pass through the point, while minimizing the curvature of the surface’ - total raster cell value of 132,508,783.441, or…
    • This is a maximum estimate - c. 90-100 km 3 is nearer the mark
    - 134.343 +/- 4 km 3
  • Towards ‘encoding archaeology’
    • Parallel between referencing points on the earth’s surface and referencing points in time
    • Relative and absolute
    • Development of reasoning models to manage space and time
    M. Doerr et al 2004, fig 1. The CIDOC-CRM www.ahessc.ac.uk/briefing_paper
  • Towards ‘encoding archaeology: ‘meetings’
    • “ The concept of “meetings is extraordinarily powerful: Chronology concerns and involves events … “Dating” an object actually means approximating the coherence volume of some event(s) in which the object was present. ”
        • Supporting Chronological Reasoning in Archaeology, Doerr et al 2004
    M. Doerr et al 2004, fig 2.
  • Towards ‘encoding archaeology: ‘meetings’
    • A. Deposition of a tephra deposit
    • B. Production of a LMIA cup in Crete - predates A, but with smaller ‘coherence volume’.
    • D. C14-datable fire destruction
    • “ The concept of “meetings is extraordinarily powerful: Chronology concerns and involves events … “Dating” an object actually means approximating the coherence volume of some event(s) in which the object was present. ”
        • - Doerr et al 2004
    • C. Deposition of cup
    M. Doerr et al 2004, fig 2.
  • A future project: Agent-based modelling
  • A future project: Agent-based modelling After Giuseppe Trautteur and Raniero Virgilio
  • To Conclude… [email_address]