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Quantitative morphology, recent evolution, and future activity of the Kameni Islands volcano, Santorini, Greece by David M. Pyle, and John R. Elliott Geosphere.

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Presentation on theme: "Quantitative morphology, recent evolution, and future activity of the Kameni Islands volcano, Santorini, Greece by David M. Pyle, and John R. Elliott Geosphere."— Presentation transcript:

1 Quantitative morphology, recent evolution, and future activity of the Kameni Islands volcano, Santorini, Greece by David M. Pyle, and John R. Elliott Geosphere Volume 2(5):253-268 August 30, 2006 ©2006 by Geological Society of America

2 Figure 1. General location (A) and geological map (B) of Santorini, and the intracaldera Kameni Islands, after Druitt et al. David M. Pyle, and John R. Elliott Geosphere 2006;2:253- 268 ©2006 by Geological Society of America

3 TABLE 1. HISTORICAL ACTIVITY OF THE KAMENI ISLANDS. David M. Pyle, and John R. Elliott Geosphere 2006;2:253- 268 ©2006 by Geological Society of America

4 TABLE 2. TYPICAL FEATURES OF THE KAMENI DACITE LAVAS. David M. Pyle, and John R. Elliott Geosphere 2006;2:253- 268 ©2006 by Geological Society of America

5 TABLE 3. DEVELOPMENT OF EIGHTEENTH- AND NINETEENTH-CENTURY FLOW FIELDS. David M. Pyle, and John R. Elliott Geosphere 2006;2:253- 268 ©2006 by Geological Society of America

6 TABLE 4. DEVELOPMENT OF TWENTIETH-CENTURY FLOW FIELDS. David M. Pyle, and John R. Elliott Geosphere 2006;2:253- 268 ©2006 by Geological Society of America

7 Figure 2. Flow lengths as a function of time for the eruptions in 1925–1926 and 1939–1941, based on field maps and observations in Kténas (1926) and Georgalas and Papastamatiou (1951, 1953). David M. Pyle, and John R. Elliott Geosphere 2006;2:253- 268 ©2006 by Geological Society of America

8 Figure 3. Light detection and ranging laser radar (LiDAR) return intensity map. David M. Pyle, and John R. Elliott Geosphere 2006;2:253- 268 ©2006 by Geological Society of America

9 Figure 4. Hill-shaded digital map of the Kameni Islands, based on light detection and ranging laser radar (LiDAR) data. David M. Pyle, and John R. Elliott Geosphere 2006;2:253- 268 ©2006 by Geological Society of America

10 Figure 5. Elevation map of the Kameni Islands, shown as elevation above mean sea level. David M. Pyle, and John R. Elliott Geosphere 2006;2:253- 268 ©2006 by Geological Society of America

11 Figure 6. Orthorectified aerial photograph mosaic of the Kameni Islands, April 2004. David M. Pyle, and John R. Elliott Geosphere 2006;2:253- 268 ©2006 by Geological Society of America

12 Figure 7. Interpreted geological map of the Kameni Islands, based on the new imagery and on previous maps compiled by Georgalas (1962), Huijsmans (1985), and Druitt et al. David M. Pyle, and John R. Elliott Geosphere 2006;2:253- 268 ©2006 by Geological Society of America

13 Figure 8. (A) Expanded map section showing the revised interpretation of the 1939–1941 lavas, with the inferred flow paths shown with arrows (+ symbols show the UTM grid intersections). David M. Pyle, and John R. Elliott Geosphere 2006;2:253- 268 ©2006 by Geological Society of America

14 TABLE 5. LEVÉE AND FLOW DIMENSIONS. David M. Pyle, and John R. Elliott Geosphere 2006;2:253- 268 ©2006 by Geological Society of America

15 Figure 9. Cross section showing a classical levée structure across the 1866 SW lava flow. David M. Pyle, and John R. Elliott Geosphere 2006;2:253- 268 ©2006 by Geological Society of America

16 TABLE 6. YIELD STRENGTHS, ASSUMING BINGHAM RHEOLOGY. David M. Pyle, and John R. Elliott Geosphere 2006;2:253- 268 ©2006 by Geological Society of America

17 Figure 10. Surface buckling shown in a topographic section along the 1925 SE lava flow, with the underlying slope removed. David M. Pyle, and John R. Elliott Geosphere 2006;2:253- 268 ©2006 by Geological Society of America

18 Figure 11. Contour map of the spectral power (arbitrary scale) of the different fold wavelengths in a set of five parallel profiles, spaced 2 m apart, along the length of the 1866 SW lava flow. David M. Pyle, and John R. Elliott Geosphere 2006;2:253- 268 ©2006 by Geological Society of America

19 TABLE 7. WAVELENGTHS OF FOLDS. David M. Pyle, and John R. Elliott Geosphere 2006;2:253- 268 ©2006 by Geological Society of America

20 Figure 12. Graph showing the relationship between the length of the measuring rule (x axis) against the gross length of the planform for the 1925 N flow. David M. Pyle, and John R. Elliott Geosphere 2006;2:253- 268 ©2006 by Geological Society of America

21 Figure 13. Comparison of fractal dimensions determined for Nea Kameni blocky a‘a flows with data from basaltic a‘a and pahoehoe flows from Hawaii and Galapagos (Bruno et al., 1992, 1994). David M. Pyle, and John R. Elliott Geosphere 2006;2:253- 268 ©2006 by Geological Society of America

22 TABLE 8. GROWTH OF DOMES DURING THE 1866 AND 1939 ERUPTIONS. David M. Pyle, and John R. Elliott Geosphere 2006;2:253- 268 ©2006 by Geological Society of America

23 Figure 14. Lava dome height (m) as a function of growth time, showing data from the 1866 and 1939 eruptions of the Kameni Islands (1866 Giorgios dome; 1939 Fouqué dome; Table 8), the Soufrière volcano of St. Vincent eruption (1979; Huppert et al., 1982), an... David M. Pyle, and John R. Elliott Geosphere 2006;2:253- 268 ©2006 by Geological Society of America

24 TABLE 9. INFERRED ERUPTION LENGTHS FROM DOME HEIGHT. David M. Pyle, and John R. Elliott Geosphere 2006;2:253- 268 ©2006 by Geological Society of America

25 Figure 15. Graph showing the areal distribution of known vents from the Kameni Islands. David M. Pyle, and John R. Elliott Geosphere 2006;2:253- 268 ©2006 by Geological Society of America

26 Figure 16. Relationship between eruption length and intereruptive interval for the last five eruptions of the Kameni Islands (1707–1711, 1866–1870, 1925–1928, 1939–1941, 1950). David M. Pyle, and John R. Elliott Geosphere 2006;2:253- 268 ©2006 by Geological Society of America


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