You can use this page to browse through all of the individual visualizations that have been cataloged in our digital library. You can also browse them as
Detecting El Niño in Sea Surface Temperature Data
SST anomalies for December 1997 displayed in My World GIS™. Red indicates above average temperatures compared to average SST temperatures for December data averaged over the years 1982-1998. This chapter introduces you to normal seasonal sea surface temperature (SST) variation as well as extreme variation, as in the case of El Niño and La Niña events, in the equatorial Pacific Ocean. You will learn how to download seasonal SST data from the Pacific Marine Environmental Laboratory (PMEL), via a THREDDS server, for the years 1982 to 1998. With My World GIS, you will visualize and analyze that data, looking for the tell-tale SST signature of El Niño and La Niña events that occurred during that time period. At the conclusion of the chapter, you will be given the opportunity to analyze a season of your own choosing to determine if an El Niño and La Niña SST pattern emerged in that year's data.
Weathering - Part I
This site features 27 different photographs of physical, mechanical, and chemical weathering of outcrops and man-made structures.
Natural Hazards: Floods
This site contains an interactive map of recent worldwide flood events. Clicking on the icons on the map will display satellite imagery and a detailed description of the flood events. Information in each description includes time and date of the event(s) as well as cause and effects of the event(s). Users may also choose to follow hotlinks to the detailed flood event information. This site is part of NASA's Earth Observatory, Natural Hazards division.
Dynamics of Steady-State Drainage Basins: An Experimental Approach
This site contains animations and data of erosion on a small scale and numerical landscape erosion models. Erosion on small scale models were developed in an erosion facility that allows a miniature landscape to erode through several relief distances at constant base level fall and rainfall rates. Numerical landscape erosion animations are modified from published models with changes to numerical lattice boundaries such as stream curvatures, hillslope failure and directional diffusion. Tables and diagrams provide spatial and temporal statistics of experimental landscapes. Also available on this website are PDF versions of Les Hasbargen's publications and presentations.
Climate TimeLine Information Tool
The Climate TimeLine (CTL) Information Tool summarizes climate history for time spans from 1 year to 100,000 years ago and beyond. The relation between human development, weather, and climate is explored. The CTL explains how past climate is measured, provides basic information on paleoclimatology, and explains the use of paleo proxies. There is a tutorial on drought and how to use the CTL to investigate that topic. There is also a climate glossary and links to climate and paleoclimate data.
Discover Our Earth
Discover Our Earth contains a wide range of information related to Earth science using graphs, maps, and movies. The focal topics are earthquakes, volcanoes, topography, plate tectonics, and sea level change. There are three main areas to access the data: Educators, Students, and Web Tools. The Educators section is designed to provide teachers with basic background information about selected Earth science topics and suggest several student activities and exercises that can be employed in classroom settings. Educators are encouraged to adopt, adapt, and modify exercises to suit their needs or situation. The Students section provides critical background information and primarily prepares students to start using the web tool QUEST (Quick Use Earth Science Study Tool). Using QUEST, students are able to experiment and test their own ideas and hypotheses related to any topics provided in these pages. With the tools and information provided, students are able to actively engage in an earth science knowledge discovery, critically evaluate the data and results, and reach their own conclusions about the earth system processes. Two Java-based, interactive data analyses and mapping tools allow customized access to a large variety of earth science data sets that are used by research scientists. The first Java applet, QUEST, has been designed and developed to be used by beginning and intermediate level earth science students. It has an easy-to-use interface that allows access to key earth science data sets. The second Java applet, GEOID (Geoscience Interactive Data tool), is more appropriate for advanced users, and provides a dynamic mapping interface and can be used to access all of the underlying earth science data sets.
NOAA Interactive GIS Climate Maps
This website contains an interactive GIS map with global temperatures, precipitation, ecosystems, population and other layers. The tool can zoom in and out, provide limited geographic information, and display a variety of climatic information.
Natural Resources Conservation Service: Climate Information Retrieval
This website, created and maintained by the Natural Resources Conservation Service, contains an interactive map containing climate information for each state. Users can click on states and find information and data for every county in every state. Data includes daily mean temperature, frost free days, growing season, and monthly temperature and precipitation. Users may also download data from this page.
Using imagery and visualizations, this site offers investigations of almost every Earth science topic imaginable. It is structured to follow the unit and chapter headings of an Earth science textbook, offering interactive explorations to complement the topics. The scope is extensive, covering dynamic Earth processes, atmospheric science and ocean science.
San Antonio Water System Flash Animations
This site features a series of Flash-based animations on several aspects of the San Antonio Water System. Although regional in focus, the topics are broadly applicable. They include: the hydrologic cycle, aquifer structure and function; non-point-source pollution, fresh water distribution, waste water treatment, aquifer storage and recovery and household water conservation. There are also links to a few on-line stories, but those are not included in this review.