In this lab, students attempt to answer the question “What causes icequakes in Greenland?” To accomplish this, students use Google Earth to examine both the spatial distribution of the icequakes, as well as the physical features of the glacier in regions where icequakes occur. Next, students examine the temporal distribution of the icequakes and compare this evidence to monthly and annual mean air temperatures in Greenland. Finally, students synthesize the evidence they have collected to create a multi-paragraph explanation of how icequakes in Greenland exemplify the concept of “Earth as a system.”
Before undertaking this activity, students should understand the basic causes of earthquakes (e.g. Elastic Rebound Theory).
Students will be able to:
- Identify major features of a continental glacier system in satellite imagery and explain how the system operates.
- Describe icequake occurrence in Greenland and demonstrate how their increasing frequency exemplifies the concept of Earth as a system, connecting climate change, glacial melting, and seismic activity