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systems, and the definition of an advanced geographic information system for earthscience studies.

Earth Resources Observation Systems

Remotely sensed data are produced, archived, and distributed under the Earth Resources Observation Systems (EROS) Program. The largest users of the data are Government agencies and private firms involved with the exploration and assessment of energy, mineral, and renewable resources. EROS scientists also conduct research leading to new and improved remote sensing and spatial data applications.

The EROS Data Center in Sioux Falls, South Dakota, serves as the repository and public distribution facility for a growing archive of over 8.6 million aerial photographs and side-looking radar images from various Federal programs. The center cooperates with the National Oceanic and Atmospheric Administration and the Earth Observation Satellite Company (the commercial Landsat system operator) to perform final ground processing and distribution of Landsat satellite data.

National Mapping Research

Agency and the National Geodetic Survey, is developing applications of the NAVSTAR Global Positioning System, which is a satellite navigation and positioning system for attaining positional data to geodetic standards.

Information Services

The USGS disseminates much of the Nation's earth-science information through its Public Inquiries Offices, National Cartographic Information Centers, and the Earth Resources Observation Systems Data Center. The information comes in many forms, from maps and books to computer-readable magnetic tapes. About 93,000 different maps and books and about 8.6 million aerial and space images are available for purchase. USGS maps are also currently available from more than 3,200 authorized commercial map dealers nationwide.

International Activities

The U.S. Geological Survey has been involved with earth-science studies in foreign countries for nearly 50 years. Authorization is provided under the Organic Act, as revised, and the Foreign Assistance Act and related legislation when such studies are deemed by the Departments of the Interior and State to be in the interests of the U.S. Government. Current international program efforts focus on technical assistance programs in developing countries and scientific cooperation and research through agreements with other countries as an extension and enhancement of the Survey's domestic programs. Decisions to undertake international scientific activities are based in part on these principal objectives:

• The opportunity for comparative studies of scientific phenomena abroad and domestically.

The opportunity to obtain information. on existing and potential foreign resources of interest to the United States.

The opportunity to broaden the knowledge, understanding, and expertise of USGS scientists.

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• The opportunity to develop and maintain relations with counterpart institutions and to conduct programs that improve scientific cooperation and exchange of information technology.

• The opportunity to support international programs of other Federal agencies, particularly the U.S. Department of State, in political, economic, and strategic efforts that contribute to foreign policy objectives.

Technical assistance programs for foreign nationals use funds from other U.S. government agencies, international organizations, or foreign governments for scientific advice, training, demonstration, and collaboration. Scientific research with foreign counterpart organizations under Government-approved bilateral and multilateral cooperative agreements uses both funds appropriated for USGS research and funds and other resources from the cooperating countries or organizations to achieve common research objectives. Such cooperative programs are ordinarily supported on the basis that each participant country pays its own expenses. Cooperative research activities range from informal communications between scientists, through formal, jointly staffed projects, to multinationally staffed and coordinated programs focused on particular problems or topics.

Related activities that are integral to the international programs include institutional development, exchange of scientists, training of foreign nationals, and representation of the Survey or the U.S. Government in international organizations and at international conferences and meetings.

Administrative Division

Mission

The Administrative Division provides administrative direction and coordination in support of the scientific and technical programs of the U.S. Geological Survey. This support includes policy guidance and program direction and provides leadership and authority for various administrative management and technical support func

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Aspen grove near Bear Lake, Rocky Mountain National Park. (Photograph by Mark A. Hardy, U.S. Geological Survey.)

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