COLLECTION METADATA FOR THE ADL CATALOG
Title Alexandria Digital Library Catalog.
Short title ADL Catalog.
Responsible party Map and Imagery Laboratory, Davidson Library, University of California at Santa Barbara.
Scope and purpose The ADL Catalog provides geospatial data and metadata in digital (both online and offline) and hardcopy form. As of January 2000, coverage is worldwide but concentrated on Southern California. Major online, digital series in the collection include: DRGs (digital raster graphics: scanned U.S. Geological Survey topographic maps) for California; SPOT satellite images for California; and scanned maps of foreign countries. Major metadata-only series include: Geodex (sheet-level records for mainly topographic maps, worldwide); frame-level records for aerial photography acquired from the NASA/Ames Research Center (mainly U.S.); and scene-level records for Landsat Multispectral Scanner imagery (worldwide). Most items in the ADL Catalog are held by the Map and Imagery Laboratory; Geodex reflects holdings of other major map collections in California.
Content type Digital, online holdings; digital and non-digital offline holdings.
Relationship to other collections None.
Update frequency Continuous.
Collection overview
Total item count 2,339,675 items as of March 5, 2000.Item metadata
Thesaurus or authority list for item types The ADL Object Type Thesaurus.Spatial (geographic) coverage
Type Count cartographic works 324,876 maps 324,876 images 2,014,799 photographs 484,083 aerial photographs 484,083 remote-sensing images 2,014,799 aerial photographs 484,083
Temporal coverage
Item formats
Thesaurus or authority list for item formats The ADL Catalog item formats are loosely based on RFC 2046, Multipurpose Internet Mail Extensions (MIME).
Format Count Offline 2,289,872 Digital 17,492 Non-digital 2,272,380 Film 1,950,689 Paper 321,691 Online 3,034 Image 3,034 BIL 183 TIFF 2,851
Schema Principally, MARC 21. A locally developed schema, MIL-B, is used for fields that would otherwise be subsumed under MARC 21 field 500 (general note).Supported search bucketsSample record ADL full metadata report for item 800630, "DRG o34119d7, Digital Raster Graphic of GOLETA, CA." in XML and HTML.
Geographic locationsTerms and conditions Copyright (c) 1999, 2000 by the Regents of the University of California. All rights reserved. The ADL Catalog is open to all University of California campuses. Items within the ADL Catalog carry their own statements about access and use constraints when restrictions apply.
Description Geographic locations and regions described by latitude/longitude coordinates.DatesMetadata mapping MARC 21 fields 034 d, e, f, g (coded cartographic mathematical data---coordinates) and 255 c (cartographic mathematical data---statement of coordinates).
Notes Queries against this bucket are evaluated using a Plate Carre projection, i.e., by treating latitude and longitude as Cartesian coordinates. Thus, query regions may not include the North or South Poles. Additionally, non-rectangular query regions may not intersect the +/-180 meridian.
Description Dates and date ranges.TypesMetadata mapping MARC 21 fields 008/07-14 (publication date(s)), 045 (time period of content), 260 c (publication, distribution, etc. (imprint)---date of publication, distribution, etc.), and 260 g (publication, distribution, etc. (imprint)---date of manufacture).
Description Terms drawn from a collection-dependent controlled vocabulary identifying meaning or content.FormatsMetadata mapping The ADL Catalog item types, which are in turn derived from MARC 21 field 655 a (index term---genre/form).
Description Terms drawn from a collection-dependent controlled vocabulary identifying form or representation.OriginatorsMetadata mapping The ADL Catalog item formats.
Description Names of authors, publishers, distributors, etc.Assigned termsMetadata mapping MARC 21 fields 100 (main entry---personal name) and 110 (main entry---corporate name).
Notes Non-alphanumeric characters are treated as word separators.
Description Subject-related terms from controlled vocabularies. This bucket is a subset of the "Subject-related text" bucket.Subject-related textMetadata mapping MARC 21 fields 650 (subject added entry---topical term) and 651 (subject added entry---geographic name), and other 6XX (subject access) fields.
Notes Non-alphanumeric characters are treated as word separators.
Description Subject-related text, not necessarily from controlled vocabularies. This bucket is a superset of the "Assigned terms" bucket.IdentifiersMetadata mapping MARC 21 fields 245 (title statement), 500 (general note), 520 (summary, etc.), and others.
Notes Non-alphanumeric characters are treated as word separators.
Contact
Mary Larsgaard
Assistant Director
Map and Imagery Laboratory, Davidson Library
University of California at Santa Barbara
Santa Barbara, California 93106
E-mail: mary@alexandria.ucsb.edu
Phone: 805-893-4049