Classroom activities based on how scientists study active volcanoes on the deep ocean floor. Activities include: locating an earthquake epicenter, recording geological and biological information during an ocean floor traverse, creating cross-section profiles of the ocean floor, and graphing seafloor data. Resources include videos and teacher guides. Full description.

This concentrated, in-depth resource provides access to recent information on El Nino Southern Oscillation (ENSO) and La Nina in the Pacific Ocean, including data, graphics, forecasts, historical perspectives, in-depth analyses, prediction benefits, impacts on human life, and information on the 1997/1999 El Nino and La Nina events. Links to relevant data include Tropical Atmosphere Ocean Project (TAO) ... Full description.

The Ocean World site has a wide variety of information regarding the ocean. Established by Texas A and M University's Jason Project, Ocean World provides a wealth of information on weather, forams, icebergs, fisheries, coral reefs, waves, El Nino, currents and more. The site contains information for both students and teachers. The teacher section of the site contains background information on all ... Full description.

This activity prepares you to launch an investigation of the relationship between precipitation and streamflow for a local watershed. It can enrich a study of the water cycle. Following the step-by-step instructions in a case study you will locate, download, format, and finally graph one year of Web-based data for these two variables. The graph highlights the details of this often complex precipitation-streamflow ... Full description.

The National Weather Service provides weather and marine data from buoys surrounding North America, the Carribean, and Great Britain. Historical and realtime data are featured. Data include wind, waves, atmospheric pressure, air and water temperature, and dewpoint. Frequently Asked Questions explain how the marine stations collect and transmit data, how quality is assured, and how the National Data ... Full description.

This activity of the Earth Exploration Toolbook walks users through a technique for documenting change in before-and-after sets of satellite images. The technique can be used for any set of time-series images that are spatially registered to show the exact same area at the same scale. In the chapter, users examine three Landsat images of the Pearl River delta in southeastern China. In the images, ... Full description.

In this activity, users download and graph modeled climate data to explore variability in climate change. Most people know that climate changes are predicted over the next hundred years, but they may not be aware that these changes are likely to vary from region to region. Using data from the University of New Hampshire's Earth Science Information Partner, a digital library of Earth Science data, ... Full description.

This activity describes the technique of preparing latitude-longitude based data so it can be imported into a geographic information system (GIS). The chapter describes the steps to create a map to display data and guides users through some basic geographic analyses. The focus of the chapter's case study is earthquake prediction. Users download and format near real-time and historical earthquake data ... Full description.

This report discusses how natural processes and human activities affect the interactions of ground water and surface water, and the importance of considering ground water and surface water as a single resource. Topics include natural processes of ground- and surface-water interaction; chemical interactions; and the effect of landscapes on these interactions. There is also discussion of the effects ... Full description.

This site describes three different applications for ground water freezing techniques: creation of a barrier for mining; creation of a cofferdam to facilitate underground excavation and construction; and for environmental remediation. Although not written for a general audience, the site does provide insight into an innovative, high-tech application of hydrology. Full description.