Author

Gail A. Jereb

Publication Date

1986

Document Type

Dissertation/Thesis

First Advisor

Dahlberg, Richard E.

Degree Name

M.S. (Master of Science)

Department

Department of Geography

LCSH

Geological Survey (U.S.)||Topographic maps

Abstract

Currently the U.S. Geological Survey National Mapping Division does not employ an objective, global review of 7.5-minute topographic quadrangles to establish priorities for photoinspection. As a result, many quadrangles in need of revision may be overlooked at the photoinspection-selection stage of the revision process. This study develops an objective strategy for selecting 7.5- minute quadrangles for photoinspection. The strategy incorporates various quadrangle characteristics to indicate the relative importance of individual quadrangles in the overall inspection cycle and their priority within the cycle. A pilot project to test the strategy, using the 128 7.5-minute quadrangles in the one-degree by two-degree area covered by the Aurora, Illinois 1:250,000-scale topographic quadrangle, was carried out. The Aurora pilot project demonstrated the feasibility of implementing a global review strategy based upon readily available public data files. Of the 12b quadrangles in the Aurora project, 17 were identified as candidates for photoinspection.

Comments

Bibliography: pages [70]-73.

Extent

vi, 74 pages

Language

eng

Publisher

Northern Illinois University

Rights Statement

In Copyright

Rights Statement 2

NIU theses are protected by copyright. They may be viewed from Huskie Commons for any purpose, but reproduction or distribution in any format is prohibited without the written permission of the authors.

Media Type

Text

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