Seismic/Eruption Classroom Teaching Strategies

Seismic/Eruption Classroom Teaching Strategies

Seismic/Eruption Using the Seismic/Eruption Program in Teaching Larry Braile IRIS GSA Earthquake Workshop November, 2003 Lawrence W. Braile http://www.eas.purdue.edu/~braile/ 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. 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 Seismic/Eruption Classroom Teaching Strategies Connections to other activities/lessons Large Lecture Demonstration Teachable Moment Lab Exercises

Student Research Projects/Questions Seismic Waves Connections to other activities/lessons Plate Tectonics Seismographs Plate Puzzle Earth Structure Earthquake Location 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. Teachable Moment This cross section diagram created using Seismic/Eruption illustrates the plate tectonic setting of the Pacific Northwest and the Nisqually earthquake dot). Coast (white Olympic

Puget Sound Mountains Area Approximate boundaries of the upper (seismogenic) part of the subducted slab (Juan de Fuca plate) Student Research Projects/Questions Fault Length (km) 10000 1000

100 10 6 7 8 Magnitude 9 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 10 (as shown) or linear. 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) Science Fair Projects Extensive Research Kuril and Kamchatka Earthquakes and Volcanoes Eq and Volc. Statistics

EQ CrossSection Research on Earthquakes Comparison of Frequency Magnitude Plots Number of Earthquakes Greater than or Equal to M 1960 - 2003 10000 Japan Alaska Pacific NW N. California S. California New Madrid

8000 6000 4000 2000 0 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 Magnitude (M) Research on Earthquakes Comparison of Frequency Magnitude Plots Number of Earthquakes Greater than or Equal to M 1960 - 2003 10000

Japan Alaska Pacific NW N. California S. California New Madrid 1000 100 10 1 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 Magnitude (M)

MiniPosters 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. Be sure to stop at the IRIS Booth

Pick up FREE slinky, slinky lesson plan, One pagers on earthquake topics, two color posters

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