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Analyzing USGS Site Files Using OLAP: Insights on Observations Across the U.S.

This document presents an in-depth analysis of USGS site files utilizing OLAP techniques. It explores a series of pseudo-maps reflecting USGS observations in various regions, including Alaska, Puerto Rico, Hawaii, and Antarctica. The analysis covers diverse metrics such as reported type counts, mean available data, and maximum and mean periods of record. Special attention is given to USGS observations in California, along with an examination of data availability across different latitude bands and decades, highlighting critical physical property trends of significant nutrients over time.

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Analyzing USGS Site Files Using OLAP: Insights on Observations Across the U.S.

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  1. Analyzing USGS Site Filesusing OLAP Ilya Zaslavsky, June 12, 2007

  2. Pseudo-Mapswith OLAP:the USGS Cube without time dimension

  3. US Map of USGS Observations Alaska Puerto Rico Hawaii Antarctica

  4. US Map of USGS Observations – by ReportedTypeCount

  5. US Map of USGS Observations – by Mean Available Data

  6. US Map of USGS Observations – by Max Period of Record

  7. US Map of USGS Observations – by Mean Period of Record

  8. USGS Observations: California by Mean Available Data

  9. USGS Observations: California by Available Data Total

  10. Available Data by Latitude Bands Alaska Kauai Maui Big Island Corpus Christi

  11. USGS data availability by decades:the USGS Cube with time dimension

  12. The larger cube (with time dimension): Available data by HUCs by decade

  13. Different types of nutrients by decade: Available Data Total

  14. Some physical properties by decade: Available Data Total

  15. Same without discharge, gage height, temperature and precipitation (the four most common, in that order): Available Data Total

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