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A new event detector designed for the Seismic Research Observatories A new event detector designed for the Seismic Research Observatories

A new short-period event detector has been implemented on the Seismic Research Observatories. For each signal detected, a printed output gives estimates of the time of onset of the signal, direction of the first break, quality of onset, period and maximum amplitude of the signal, and an estimate of the variability of the background noise. On the SRO system, the new algorithm runs ~2.5x...
Authors
James N. Murdock, Charles R. Hutt

Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: July 1983 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: July 1983

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: April 1983 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: April 1983

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: October 1983 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: October 1983

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, P.A. Franklin

Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: May 1983 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: May 1983

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

High paleointensities of the geomagnetic field from thermomagnetic studies on rift valley pillow basalts from the Mid- Atlantic Ridge High paleointensities of the geomagnetic field from thermomagnetic studies on rift valley pillow basalts from the Mid- Atlantic Ridge

Nineteen pillow basalts dredged within the rift valley of the Mid-Atlantic Ridge at36.8°N were studied by the Thellier stepwise heating method in order to determine the paleointensity of the geomagnetic field when they erupted on to the sea floor. Previously reported fission track ages are 2,000 to 6,000 years for the youngest rocks (mainly olivine basalts) and 10,000 to 100,000 years...
Authors
M. Prevot, E. A. Mankinen, S. Gromme, A. Lecaille

Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: September 1983 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: September 1983

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, P.A. Franklin

Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: August 1983 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: August 1983

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
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