Subduction Angle and Trench Depth An Investigation Using

Subduction Angle and Trench Depth An Investigation Using Seismic Eruption and Geo. Map. App CHHS Science Remus, MI

Seismic Eruption http: //bingweb. binghamton. edu/~ajones/#Seismic. Eruptions This software is available from Alan Jones at SUNYBinghamton at the above website. You can use it to visualize tectonic plate boundaries, depth and magnitude of earthquakes and volcanic eruptions, and to see the cross sectional profile of a fault.

Geo. Map. App http: //www. geomapapp. org/ Geo. Map. App© is a freely downloadable Java™ application, which permits users to browse bathymetry data from the world’s oceans, generate and download custom grids and maps, and explore a variety of other data types.

Deep Ocean Trench off the east coast of Japan. Data File

This delimited text file, as well as those for the other trenches, can be opened in Excel where a formula can be written to calculate the average depth of the trench along the line selected in Geo. Map. App. Excel File

Deep ocean trench off the southern coast of the Aleutian Islands.

Deep ocean trench northwest of New Zealand.

The Mariana Trench

Location: Aleutian Trench Subduction Angle: 49. 52

Location: East of Japan Subduction Angle: 27. 61

Location: Marianas Trench Subduction Angle: 59. 86

Location: Northwest of New Zealand Subduction Angle: 52. 81

Angle steepens at depth in this subduction zone!

Which trench can be identified with the outlier in this data set? What is the general pattern shown in the data? What might be a reason for the outlier?

All screen shots are of student work in Mr. De. Wolf’s 3 rd Period TESS-Geology course at Chippewa Hills High School