Notable Changes in Thermal Activity at Norris Geyser Basin Provide Opportunity to Study Hydrothermal System
http://volcanoes.usgs.gov/yvo/2003/NorrisTherm03.html

U.S. Geological Survey


This website gives an overview of the changes in many hydrothermal features in the Norris geyser basin that began in July 2003. To monitor the increased hydrothermal activity, the Yellowstone Volcano Observatory installed a temporary monitoring network of seismographs, Global Positioning System (GPS) receivers, and temperature data loggers. Text, photos, data, and references show their findings. This website would be useful for anyone with a basic knowledge in earth science that is interested in recent developments in Yellowstone's hydrothermal system.

This resource is referenced here:
Subject: Geoscience:Geology:Igneous and Metamorphic Petrology:Volcanology
Resource Type: Scientific Resources:Overview/Reference Work
Topics: Earth surface
Focus on Yellowstone: Yellowstone hazards, Seismicity, Deformation, geophysics, Geothermal processes and features