The GLIMS database will provide an easy-to-use and widely accessible service for the glaciological community and other users needing information about the world's glaciers. This paper describes these recent developments and new plans for GLIMS. New funding from NASA, expected to begin in the next few months, will include support to: populate the database with new analyses from the world- wide network of GLIMS Regional Centers, add historical observations from the Former Soviet Union and China, enhance the user interface with an open systems GIS approach to make the data available, and validate the utility and quality of the database for glaciological science through selected regional scientific assessments. GLIMS AND NSIDC SOFTWAREWe are working closely with the United States Geological Survey on the development of GLIMS analysis software called GLIMSView. Simple user interfaces for data submission and ordering are being tested. The database design, data transfer specification, and ingest module are complete. The database includes temporal measurements of glacier length, area, boundaries, topography, surface velocity vectors, and snowline elevation. With National Aeronautics and Space Administration (NASA) funding, the National Snow and Ice Data Center (NSIDC) has developed the GLIMS glacier database. The Data Dictionary contains detailed information about the fields in each table, and the Entity Relation Diagram illustrates the relationships between the tables. GLIMS AND NSIDC PLUSSample applications illustrating the developed techniques are also shown.Global Land Ice Measurements from Space (GLIMS) is an international project tasked with surveying a majority of the world's estimated 160,000 glaciers with data collected by the Advanced Spaceborne Thermal Emission and reflection Radiometer (ASTER) instrument aboard the EOS Terra spacecraft and the Landsat Enhanced Thematic Mapper Plus (ETM+). GLIMS Database: Details Information on the GLIMS NSIDC glacier database design The following represents the current state of the design of the GLIMS glacier relational database. This article addresses remote sensing and Geographic Information Science techniques developed within the framework of GLIMS in order to fulfill the goals of this distributed project. GLIMS AND NSIDC MANUALThe project as a whole was originated, and has been coordinated by, the US Geological Survey (Flagstaff, AZ), which has also led the development of an interactive tool for automated analysis and manual editing of glacier images and derived data (GLIMSView). A global glacier database has been designed and implemented at the National Snow and Ice Data Center (Boulder, CO) parameters have been expanded from those of the World Glacier Inventory (WGI), and the database has been structured to be compatible with (and to incorporate) WGI data. Specialized needs for mapping glaciers in a distributed analysis environment require considerable work developing software tools: terrain classification emphasizing snow, ice, water, and admixtures of ice with rock debris change detection and analysis visualization of images and derived data interpretation and archival of derived data and analysis to ensure consistency of results from different Regional Centers. The consortium is organized into a system of Regional Centers, each of which is responsible for glaciers in their region of expertise. Global Land Ice Measurements from Space (GLIMS) is an international consortium established to acquire satellite images of the world's glaciers, analyze them for glacier extent and changes, and to assess these change data in terms of forcings.
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