1	The Challenge of Archiving and Preserving Remotely Sensed Data CODATA 2002 Montreal, Canada 30 September 2002
2	Outline Background Relevance Mandate Challenges Lifecycle Take Home
3	Background Rich, Turbulent History Analog and Digital Vibrant Program
4	Rich, Turbulent History Origins of Landsat Land as the Focus Incorporation of Aerial Photography Landsat Commercialization Declassification
5	Analog and Digital Originally Film-Based Digital Arrival in the 1980s Different Management Strategies
6	Vibrant Program Recognition Separate Funding Dedicated Staff Diverse Holdings
7	Diverse Holdings Declassification 1960-1980 900,000* Landsat MSS 1972-1992 650,000 Landsat TM 1982-Today 500,000 AVHRR 1988-Today 275,000 SPOT 1986-1998 800,000 Landsat ETM+ 1999-Today 300,000 Aerial Photography 1937-Today 8,200,000* * Film-Based
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13	Relevance Environmental Human Health Mineral Exploration Change Analysis Natural and Manmade Hazards Urban Dynamics Critical to Establish!
14	Mandate Landsat (ERTS / EROS) Program U.S. Global Change Research Program U.S. Public Law 102-555 (1992) U.S. National Space Policy Presidential Decision Directive
15	Challenges Maintaining the Funding Analog Digital
16	Maintaining the Funding Continuous Reporting Strategic Briefings Published Science Data Calls
17	Analog Volume Environmental Conditions Security Geographics Vinegar Syndrome
18	Volume Over 8 Million Frames Four Film Types Multitude of Physical Sizes
19	Environmental Conditions Temperature Relative Humidity Variability
20	Security Relatively Long Shelf-Life Safety Films Off-Site Copies Tours Promotion
21	Geographics Frame-Based Latitudes and Longitudes Majority Strip- or Mosaic-Based Contract $
22	Vinegar Syndrome Acetate Films Used into the 1960s Affects 20,000 Rolls Antarctica Not If, But When $ Identification and Ranking Mitigation
23	Digital Volume Security Lifespan Migrations Transcriptions
24	Volume Growing Exponentially Storage & Access Strategies Off-, Near-, Online Media Hard Disk Versus Tape Trade Studies
25	Security Relatively Short Shelf Life Media, HW, SW Obsolescence Off-Site Copies Reciprocal Archives Tours Promotion
26	Lifespan: Migrations Migrating Data From Older to Newer Media Straight Forward Required Low to Moderate Cost Clock Ticking …
27	Lifespan: Transcriptions Migrating Data and Re-Formatting Complex Requirements / Design / Integration / Operation Unique HW / SW Required Medium to High Costs Long Operational Phases Clock Ticking …
28	Lifecycle Records Management Approach Creation Maintenance / Use Disposition Learning Curve Training Structure
29	Lifecycle: Creation What to Acquire? Advisory Committees Internal External
30	Lifecycle: Maintenance & Use Trade-Offs Access Physical Via Metadata / Browse Preservation Three Copy Digital Strategy 1 On-Line 1 Off-Line 1 Off-Site
31	Lifecycle: Dispositions The Back Door More is Better / Turf Mission Resources Advisory Committees
32	Take Home Message Establishing Relevance is Critical Analog and Digital Challenges Records Management Approach Constant Vigilance! John Faundeen faundeen@usgs.gov
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