# Data Sources and Tools

This is the Geoscience subset of our Data Resources collection. To browse through the entire collection of data sources and tools, just go to the Using Data in the Classroom page.

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Measuring Depth to Bedrock Using Seismic Refraction part of IGUaNA:Teaching Materials:Measuring Depth to Bedrock Using Seismic Refraction
This module is designed to introduce students to geophysical concepts and related earth science principles to illustrate how geophysics can be used to inform engineering projects in an urban environment. Students ...

Geoid Height Calculator part of Geodesy:Resources
The Geoid Height Calculator returns the geoid height at the latitude and longitude specified by the user. The geoid is one approximation of Earth's shape due to gravity, roughly coinciding with mean sea level. Because the inside of our planet is non-uniform, gravity is not constant at the surface. If Earth were completely covered in an ocean, the water would swell over gravity highs (where there is more mass below the surface) and depress in areas of gravity lows (where there is less mass below the surface). The geoid approximates this hypothetical ocean surface, representing a geopotential surface. To think of it another way, if we were able to walk on the geoid, we would experience a constant value of gravity.

Plate Motion Calculator part of Geodesy:Resources
The Plate Motion Calculator calculates tectonic plate motion at any location on Earth using one or more plate motion models.

Module Overview for Instructors part of IGUaNA:Teaching Materials:Forensic Geophysics Using Ground Penetrating Radar
Pipes, Tree Roots or Unmarked Graves? Using Ground Penetrating Radar for Forensic Geophysics The Ground-Penetrating Radar module of IGUaNA is designed to expose students to geophysical concepts and societal ...

Module Overview for Instructors part of IGUaNA:Teaching Materials:Measuring Depth to Bedrock Using Seismic Refraction
Measuring Depth to Bedrock Using Seismic Refraction This module is designed to introduce students to geophysical concepts and related earth science principles to illustrate how geophysics can be used to inform ...

Instructor Story: Sarah Kruse part of IGUaNA:Teaching Materials:Measuring Depth to Bedrock Using Seismic Refraction
Using the Measuring Depth to Bedrock Using Seismic Refraction IGUaNA module at the University of South Florida I used these materials in my Dynamic Earth: Introduction to Physical Geology course at the University ...

GPS Velocity Viewer part of Geodesy:Resources
This interactive tool allows users to see GPS/GNSS-measured crustal motions around the globe in a wide range of reference frames. The default view shows horizontal motions in the North American reference frame but users can choose to add vertical motions, earthquakes epicenters, plate boundaries, volcanic centers, or other reference frames. The tool can also be used as an interface to learn GPS/GNSS station names and download time series data.

Interpreting recent carbon dioxide data part of Climate Change:Activities
This activity engages students in viewing and downloading web-accessed data sets to examine latitudinal trends in CO2 over (recent) time and to interpret a time series of CO2 data from a selected location.

Exploring Aerosol Optical Thickness Using MODIS Satellite Imagery in NEO part of DataSheets
"Aerosol Optical Thickness is the degree to which aerosols prevent the transmission of light" in the atmoshpere.1 "An aerosol optical thickness of less than 0.1 indicates a crystal clear sky with ...

Exploring Aerosol Optical Thickness Using MODIS Satellite Imagery in NEO part of Using Data in the Classroom:Datasheets
"Aerosol Optical Thickness is the degree to which aerosols prevent the transmission of light" in the atmoshpere.1 "An aerosol optical thickness of less than 0.1 indicates a crystal clear sky with ...