Publications
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International Geomagnetic Reference Field International Geomagnetic Reference Field
In August 1981 the International Association of Geomagnetism and Aeronomy revised the International Geomagnetic Reference Field (IGRF). It is the second revision since the inception of the IGRF in 1968. The revision extends the earlier series of IGRF models from 1980 to 1985, introduces a new series of definitive models for 1965-1975, and defines a provisional reference field for 1975...
Authors
N.W. Peddie
International geomagnetic reference field 1980 International geomagnetic reference field 1980
[No abstract available]
Authors
N.W. Peddie
Huge landslide blocks in the growth of piton de la fournaise, La réunion, and Kilauea volcano, Hawaii Huge landslide blocks in the growth of piton de la fournaise, La réunion, and Kilauea volcano, Hawaii
Piton de la Fournaise, on the island of La Réunion, and Kilauea volcano, on the island of Hawaii, are active, basaltic shield volcanoes growing on the flanks of much larger shield volcanoes in intraplate tectonic environments. Past studies have shown that the average rate of magma production and the chemistry of lavas are quite similar for both volcanoes. We propose a structural...
Authors
Wendell A. Duffield, Laurent Stieltjes, Jacques Varet
Landslides and related features, Kentucky and Tennessee, Corbin 1° x 2° sheet Landslides and related features, Kentucky and Tennessee, Corbin 1° x 2° sheet
No abstract available.
Authors
Alfred R. Taylor, Roger E. Thomas
Stratigraphy, structure, absolute age, and paleontology of the upper Pleistocene deposits at Sankaty Head, Nantucket Island, Massachusetts Stratigraphy, structure, absolute age, and paleontology of the upper Pleistocene deposits at Sankaty Head, Nantucket Island, Massachusetts
The Sankaty Head cliff exposes drift of at least two glaciations and interglacial marine deposits. Radiocarbon, amino-acid- racemization, and uranium-thorium analyses were used to determine the absolute ages of the beds. The results indicate that 1) the Sankaty Sand correlates with oxygen-isotope stage 5 (Sangamonian), 2) the underlying drift is older than stage 5 (Illinoian or older)...
Authors
Robert N. Oldale, Page C. Valentine, T. M. Cronin, E.C. Spiker, B. W. Blackwelder, D. F. Belknap, J.F. Wehmiller, Barney J. Szabo
High-resolution seismic-reflection profiles from the R/V Columbus Iselin, cruise CI 7-78-2, over the continental shelf and slope in the Georges Bank area High-resolution seismic-reflection profiles from the R/V Columbus Iselin, cruise CI 7-78-2, over the continental shelf and slope in the Georges Bank area
In September 1978, the U. S. Geological Survey (USGS) collected 5,029 km of single-channel seismic-reflection data from the Georges Bank area of the Atlantic Continental Shelf and Slope during the R/V COLUMBUS ISELIN cruise CI 7-78-2. The purpose of the cruise was to determine the location and frequency of mass sediment movement and other geologic hazards along the Continental Slope...
Authors
Norman G. Bailey, John M. Aaron
The Imperial Valley, California, earthquake of October 15, 1979 The Imperial Valley, California, earthquake of October 15, 1979
No abstract available.
Authors
Water Resources Division U.S. Geological Survey
3.5-kHz Data Collected in the Wilmington Canyon Area During 1980, Endeavor Cruise 80-EN-056 3.5-kHz Data Collected in the Wilmington Canyon Area During 1980, Endeavor Cruise 80-EN-056
During 1980, geophysical data were collected seaward of New Jersey in the vicinity of Wilmington Canyon on three cruises, GYRE 80-G-7B, GYRE 80-G-BB, and ENDEAVOR 80-EN-056 (discussed here). The objectives of these surveys of the Continental Slope and upper Rise, including Wilmington Canyon and the adjacent margin, were to extend existing geophysical coverage to the south of Wilmington...
Authors
B.A. McGregor
Landslides in the greater Pittsburgh region, Pennsylvania Landslides in the greater Pittsburgh region, Pennsylvania
No abstract available.
Authors
John S. Pomeroy
A Proposed Model for the International Geomagnetic Reference Field-1965 A Proposed Model for the International Geomagnetic Reference Field-1965
A best current model of the main geomagnetic field is presented as a response to a need for an “International Geomagnetic Reference Field”. This model is described by a series of 120 spherical harmonic coefficients and their first and second time derivatives from an epoch 1960.0. It was derived from a sample of all magnetic survey data available from the interval 1900-1964 plus a recent...
Authors
N.W. Peddie, E.B. Fabiano