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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

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

Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: November 1982 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: November 1982

The preliminary geomagnetic data included here is made available to scientific personnel and organizations, as part of a cooperative effort and on a data exchange basis because of the early need by some users. To avoid delay, all of the data is copied from original forms processed at the observatory; therefore it should be regarded as preliminary.
Authors
John B. Townshend, J.E. Papp, E.A. Sauter, L.Y. Torrence, T.K. Cunningham

Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: May 1982 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: May 1982

The preliminary geomagnetic data included here is made available to scientific personnel and organizations, as part of a cooperative effort and on a data exchange basis because of the early need by some users. To avoid delay, all of the data is copied from original forms processed at the observatory; therefore it should be regarded as preliminary.
Authors
John B. Townshend, J.E. Papp, E.A. Sauter, L.Y. Torrence

Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska, August 1982 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska, August 1982

The preliminary geomagnetic data included here is made available to scientific personnel and organizations, as part of a cooperative effort and on a data exchange basis because of the early need by some users. To avoid delay, all of the data is copied from original forms processed at the observatory; therefore it should be regarded as preliminary.
Authors
John B. Townshend, J.E. Papp, E.A. Sauter, L.Y. Torrence, T.K. Cunningham

Rectangular harmonic analysis applied to the geomagnetic field 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...
Authors
L.R. Alldredge
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