A point in space, a moment in time: towards an integrated view of the Santorini eruption Stuart Dunn Centre for e-Research...
Objectives: <ul><li>Overview of tephra fallout </li></ul><ul><li>Consistent representation of data </li></ul><ul><li>Estim...
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 <ul><li>Accuracy and (versus) precision </li></ul><ul><li>Georeferen...
Constructing a geodatabase of Theran tephra: problems <ul><li>Accuracy and (versus) precision </li></ul><ul><li>Georeferen...
Estimation of bulk volume of ejecta <ul><li>Geographical Information Systems (GIS) </li></ul><ul><li>Triangulated Irregula...
Towards ‘encoding archaeology’ <ul><li>Parallel between referencing points on the earth’s surface and referencing points i...
Towards ‘encoding archaeology: ‘meetings’ <ul><li>“ The concept of “meetings is extraordinarily powerful: Chronology conce...
Towards ‘encoding archaeology: ‘meetings’ <ul><li>A. Deposition of a tephra deposit </li></ul><ul><li>B. Production of a L...
A future project: Agent-based modelling
A future project: Agent-based modelling After Giuseppe Trautteur and Raniero Virgilio
To Conclude… [email_address]
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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

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Minoan chronology workshop, Sonderborg 10 11 2007

  1. 1. 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
  2. 2. Objectives: <ul><li>Overview of tephra fallout </li></ul><ul><li>Consistent representation of data </li></ul><ul><li>Estimation of bulk volume of ejecta </li></ul><ul><li>Towards ‘encoding archaeology’ - associating archaeological and natural sciences data spatially and temporally </li></ul>
  3. 3. Constructing a geodatabase of Theran tephra
  4. 4. Constructing a geodatabase of Theran tephra
  5. 5. Constructing a geodatabase of Theran tephra
  6. 6. Constructing a geodatabase of Theran tephra: problems <ul><li>Accuracy and (versus) precision </li></ul><ul><li>Georeferencing from heterogeneous formats </li></ul>
  7. 7. Constructing a geodatabase of Theran tephra: problems <ul><li>Accuracy and (versus) precision </li></ul><ul><li>Georeferencing from heterogeneous formats and sources </li></ul><ul><li>Assessing deposition process </li></ul><ul><li>Harmonizing points, sections and stratigraphies </li></ul><ul><li>Georeferencing places </li></ul><ul><ul><li>formal, based on lat/long or other mathematical expressions </li></ul></ul><ul><ul><li>Informal , based on placenames, and/or where no formal mathematical identifier is present </li></ul></ul>24.87 34.87
  8. 8. Estimation of bulk volume of ejecta <ul><li>Geographical Information Systems (GIS) </li></ul><ul><li>Triangulated Irregular Network (TIN) </li></ul>‘ 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… <ul><li>This is a maximum estimate - c. 90-100 km 3 is nearer the mark </li></ul>- 134.343 +/- 4 km 3
  9. 9. Towards ‘encoding archaeology’ <ul><li>Parallel between referencing points on the earth’s surface and referencing points in time </li></ul><ul><li>Relative and absolute </li></ul><ul><li>Development of reasoning models to manage space and time </li></ul>M. Doerr et al 2004, fig 1. The CIDOC-CRM www.ahessc.ac.uk/briefing_paper
  10. 10. Towards ‘encoding archaeology: ‘meetings’ <ul><li>“ 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. ” </li></ul><ul><ul><ul><li>Supporting Chronological Reasoning in Archaeology, Doerr et al 2004 </li></ul></ul></ul>M. Doerr et al 2004, fig 2.
  11. 11. Towards ‘encoding archaeology: ‘meetings’ <ul><li>A. Deposition of a tephra deposit </li></ul><ul><li>B. Production of a LMIA cup in Crete - predates A, but with smaller ‘coherence volume’. </li></ul><ul><li>D. C14-datable fire destruction </li></ul><ul><li>“ 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. ” </li></ul><ul><ul><ul><li>- Doerr et al 2004 </li></ul></ul></ul><ul><li>C. Deposition of cup </li></ul>M. Doerr et al 2004, fig 2.
  12. 12. A future project: Agent-based modelling
  13. 13. A future project: Agent-based modelling After Giuseppe Trautteur and Raniero Virgilio
  14. 14. To Conclude… [email_address]

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