1. Seismic/Eruption Lawrence W. Braile http://www.eas.purdue.edu/~braile/ Using the Seismic/Eruption Program in Teaching Larry Braile IRIS GSA Earthquake Workshop November, 2003

2. Seismic/Eruption Seismic/Eruption includes up-to-date earthquake and volcanic eruption catalogs and allows the user to display earthquake and volcanic eruption activity in “speeded up real time” on global, regional or local maps that also show the topography of the area in a shaded relief map image. Seismic/Eruption is an interactive program that includes a number of tools that allow the user to analyze earthquake and volcanic eruption data and produce effective displays to illustrate seismicity and volcano patterns.

3. Seismic/Eruption Features 1.View earthquakes and eruptions, select range of dates, magnitudes, color code depth 2.Use standard views provided with program to explore areas and tectonic settings 3.Update earthquake locations from Internet 4.“Make Your Own Map” option 5.Display/add shaded relief topography 6.Make cross-section diagrams and 3-D views 7.Select earthquake data for statistical analysis 8.Save views, export images, make posters

4. Seismic/Eruption Classroom Teaching Strategies Connections to other activities/lessons “Large Lecture” Demonstration “Teachable Moment” Lab Exercises Student Research Projects/Questions

5. Connections to other activities/lessons Earthquake Location Plate Tectonics Earth Structure Plate Puzzle Seismographs Seismic Waves

6. “Teachable Moment” Within hours after the February 28, 2001 Nisqually earthquake (large blue dot near Olympia), this map illustrating the historical seismicity of the Pacific Northwest was produced. A cross-section was prepared showing the earthquakes in the white rectangle.

7. “Teachable Moment” Puget Sound Area Coast Approximate boundaries of the upper (seismogenic) part of the subducted slab (Juan de Fuca plate) Olympic Mountains This cross section diagram created using Seismic/Eruption illustrates the plate tectonic setting of the Pacific Northwest and the Nisqually earthquake (white dot).

8. Student Research Projects/Questions Magnitude versus fault length (determined from aftershock zone length) for various earthquakes (Alaska, 1964; Denali, 2002; Landers, 1992; Loma Prieta, 1989; Northridge, 1994, etc.). Results were quickly obtained using Seismic/Eruption views. Graph can be logarithmic (as shown) or linear.

9. Student Research Projects/Questions After a significant earthquake, how long will the aftershocks last? How large are the aftershocks likely to be? (Feb. 3, 1965, M8.7 Rat Island, Alaska, earthquake)

10. Science Fair Projects – Extensive Research Kuril and Kamchatka Earthquakes and Volcanoes EQ Cross- Section Eq and Volc. Statistics

11. Research on Earthquakes

13. Mini-Poster (created with Seismic/Eruption with some labeling added to exported map image) of California and Nevada Earthquakes. Poster size ~25x28 cm (or larger) after color photocopy enlargement. Mini- Posters

14. Be sure to stop at the IRIS Booth Pick up FREE slinky, slinky lesson plan, “One pagers” on earthquake topics, two color posters