Skip to main content
U.S. flag

An official website of the United States government

Publications

Filter Total Items: 2148

Oblique map of Loihi Seamount and Papa'u Landslide, Hawaii

No abstract available.
Authors
Tau Rho Alpha, J. M. Morley, C. E. Gutmacher, W.A. Austin

Design concepts for a Global Telemetered Seismograph Network

This study represents a first step in developing an integrated, real-time global seismic data acquisition system a Global Telemetered Seismograph Network (GTSN). The principal objective of the GTSN will be to acquire reliable, high-quality, real-time seismic data for rapid location and analysis of seismic events. A secondary, but important, objective of the GTSN is to augment the existing off-line
Authors
Jon Peterson, Nicholas A. Orsini

Test and calibration of the Digital World-Wide Standardized Seismograph

During the past decade there has been steady progress in the modernization of the global seismograph network operated by the U.S. Geological Survey (USGS). The World-Wide Standardized Seismograph Network (WWSSN) has been augmented by new stations with advanced instrumentation, including the Seismic Research Observatories (SRO) and the modified High-Gain Long-Period (ASRO) stations. One goal in the
Authors
Jon Peterson, Charles R. Hutt

Landslide overview map of the conterminous United States

The accompanying landslide overview map of the conterminous United States is one of a series of National Environmental Overview Maps that summarize geologic, hydrogeologic, and topographic data essential to the assessment of national environmental problems. The map delineates areas where large numbers of landslides exist and areas which are susceptible to landsliding. It was prepared by evaluating
Authors
Dorothy H. Radbruch-Hall, Roger B. Colton, William E. Davies, Ivo Lucchitta, Betty A. Skipp, David J. Varnes

International Geomagnetic Reference Field 1980; charts and grid values, IAGA Bulletin No. 47

No abstract available.
Authors
Eugene B. Fabiano, N. W. Peddie, D.R. Barraclough, A. K. Zunde

Rectangular harmonic analysis applied to the geomagnetic field

Spherical harmonic analysis of the earth's magnetic field is limited in the resolution that can be obtained. This limitation is caused by inadequacies of computers and of available data sets. The fundamental wavelength in spherical harmonic analysis is the circumference of the earth. To resolve wavelengths as short as 100 km would require a spherical harmonic analysis carried out to a degree and o
Authors
L.R. Alldredge