The Johns Hopkins University Studies In Geology Issues 3 4 PDF Download

The report describes a system for organizing a set of topics and related literature references in a selected field of the earth sciences. The concept of a drainage basin was selected to illustrate a conceptually-distinct field of research of interest to geologists and physical geographers. Problems associated with coding and integration of the relevant literature are pointed out. The concept of a drainage basin, initially selected as a fairly self-contained subject, was found to be more complex than originally realized. To keep the report within reasonable bounds, the subject was subdivided into several major topics, which include first the geometry of the basin considered as a physical object definable as a natural subdivision of the earth's land surface. This is followed by various attributes associated with the basin, such as soils and bedrock, streams and subsurface water in the basin, and climatic features. The system used includes three types of punched cards. The first relates to the topics discussed, the second ties in the relevant literature, and the third provides comments and specific references to individual items. Machine print-outs provide tabulated examples of the system, and a condensed bibliography of drainage-basin literature is given. (Author).