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Browse more than 160,000 publications authored by our scientists over the past 100+ year history of the USGS.  Publications available are: USGS-authored journal articles, series reports, book chapters, other government publications, and more.

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Filter Total Items: 171122

Geophysical interpretation of ground‐water levels

The theory of rock‐pressure as a cause of artesian‐head dates back at least to early Grecian times. Thus the philosopher Thales, about 600 B.C., taught that the springs derive their water from the ocean through subterranean channels and that the water is lifted to the springs by rook‐pressure. The theory of rock‐pressure has had a number of recent advocates, chief among whom was the British geolog
Authors
O. E. Meinzer

Some relations between ground‐water hydrology and oceanography

In many areas along the sea-coasts of the world the water-supply for human use is derived largely, and in some areas wholly, from underground sources. Because of the proximity to the ocean in these areas, in some respects the geologic and hydrologic conditions that govern the occurrence and movement of ground-water are quite different from those in inland areas, and to properly interpret them the
Authors
David G. Thompson

Deep‐well salinity‐exploration

One of the outstanding accomplishments of recent years in connection with the study of the geologic source of groundwater and the quality of water yielded by different formations has been the development of methods and equipment for the exploration of wells. The description and use of the deep‐well current‐meter on well‐exploration work in Hawaii and New Mexico has already appeared in published li
Authors
A.G. Fiedler

Appendix B—investigations of underground‐water problems in California, New Mexico, and Oregon

Investigations by the California Department of Public Works, Division of Water Resources (based on written communication from Harold Conkling, Deputy State Engineer)—the Division of Water Resources, California Department of Public Works, has in the past year conducted investigations of ground‐water problems in the great central valley of the State (California Trough); in the Salinas and Santa Clar
Authors
Arthur M. Piper

Fluctuations of water‐surface in observation‐wells and at stream gaging‐stations in the Mokelumne Area, California, during the earthquake of December 20, 1932

On December 20, 1932, much of the western United States felt a pronounced earthquake‐shock which caused noticeable fluctuations of the water‐surface in several observation‐wells and at two stream gaging‐stations in the Mokelumne Area, central California. These effects of the earthquake are reported briefly in this paper.According to Dr. Byerly (personal communication, February 9, 1933), in charge
Authors
Arthur M. Piper

Notes on the relation between the moisture‐equivalent and the specific retention of water‐bearing materials

The moisture‐equivalent and specific retention have been widely used as quasi‐physical constants to measure the power of a water‐bearing material or a soil to retain water against gravitative force. Comparatively little has been demonstrated, however, as to the relation of one to the other. This paper is a preliminary statement of the apparent relation between these two measures of retentive power
Authors
Arthur M. Piper

Investigations in Alaska railroad belt, 1931

No abstract available.
Authors
Philip S. Smith

Silver and bismuth-bearing galena from Leadville

No abstract available.
Authors
E. Chapman, R. E. Stevenson

A method for permanently recording the locations of objects on microscope slides

No abstract available.
Authors
K. E. Lohman

Colorimetric determination of fluoride in water using ferric chloride

No abstract available.
Authors
Margaret D. Foster

Contributions to economic geology (short papers and preliminary reports), 1931-32 : Part I. - Metals and nonmetals except fuels

No abstract available.
Authors
Gerald Francis Loughlin

Copper deposits in the Squaw Creek and Silver Peak districts and at the Almeda mine, southwestern Oregon, with notes on the Pennell & Farmer and Banfield prospects

No abstract available.
Authors
Philip John Shenon