A Geospatial Framework for the Coastal Zone National Needs for Coastal Mapping and Charting (2004) / Chapter Skim
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5 Access to Coastal Geospatial Data
5 Access to Coastal Geospatial Data
Pages 85-93
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From page 85... ...
As well as the paucity of tools for analysis and manipulation of coastal zone data, there are often concerns about data currency because of the short-term temporal scales of many coastal zone processes. This does not diminish the importance of the wide range of useful Web sites providing coastal zone geospatial data, together with tool kits to manipulate the data.
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From page 86... ...
. Many of the concerns brought up by the coastal zone user community and noted by the committee are directly addressed by Circular A-16, including the establishment of national standards, interchange formats, and metadata standards for geospatial data; the assurance of compatibility and interchangeability of datasets; the coordination of
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From page 87... ...
· Use FGDC data standards, FGDC Content Standards for Digital Geo spatial Metadata, and other appropriate standards; document spatial data with the relevant metadata; and make metadata available online through a registered NSDI-compatible clearinghouse node. · Coordinate and work in partnership with federal, state, tribal, and local government agencies, academia, and the private sector to efficiently and cost effectively collect, integrate, maintain, disseminate, and preserve spatial data, building on local data wherever possible.
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From page 88... ...
This is most readily apparent for the issue of standards, where there are concerns that a single set of standards may not be able to serve all applications and that those developing the standards may at times be too far removed from the user community, and/or that standards sometimes appear too complex for easy implementation and users are unaware of existing tools to simplify the implementation. For example, rather than follow the FGDC's Content Standard for Digital Geospatial Metadata, agencies and research groups often create their own, less complex internal standards or in some cases do not write metadata at all, citing higher priorities and/or lack of resources and time.
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From page 89... ...
, and de facto standard industry formats such as Oracle Spatial, Informix Spatial DataBlade, and IBM Spatial Extender. This is also true of CARIS and its line of hydrographic production data base and GIS software, which also fully supports the International Hydro graphic Office's S-57 Transfer Standard for Digital Hydrographic Data, the S-52 Specifications for Chart Content and Display, and the production of S-57 Electronic Nautical Charts (ENCs)
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From page 90... ...
As noted earlier, there are a number of excellent Web sites that are currently distributing geospatial data nationwide with FGDC-compliant metadata.2 However, these are too distributed and limited in their content. The committee strongly supports the development of a single portal specifically for all coastal mapping and charting data and derived products within the framework of Geospatial One-Stop.
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From page 91... ...
. The system gathers hetero geneous environmental data from disparate databases distributed across the Internet, and this information can then be displayed in a "GIS-like" fashion for data overlay and comparison using NRLs or other popular viewers.
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From page 92... ...
A recent report (NRC, 2001) concluded that although the FGDC was successful both in improving access to data through the National Clearinghouse and in beginning to establish content standards for geospatial metadata, little evidence could be found for reduced redundancy and diminished costs associated with data creation or maintenance, for improved accuracy of data, or for any removal of the significant institutional barriers inhibiting the development and maintenance of geospatial data.
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From page 93... ...
MORE THAN JUST A WEB PORTAL The establishment of a single portal for coastal geospatial data, together with a series of support tools for data transformation, processing, and integration, will go a long way toward addressing many of the concerns of this committee and the user community. Such tools and databases must also be supported by education and training, so that the user community understands and appreciates the limitations of the various datasets and their appropriate application.
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