Publications
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Deep crustal structure of the Cascade Range and surrounding regions from seismic refraction and magnetotelluric data Deep crustal structure of the Cascade Range and surrounding regions from seismic refraction and magnetotelluric data
Several regional seismic refraction and magnetotelluric (MT) profiles have been completed across the Cascade Range and surrounding geologic provinces in California, Oregon, and Washington. Analysis of three MT and two seismic refraction profiles in Oregon and a coincident MT and refraction profile in northern California show a high degree of correlation between resistivity and velocity...
Authors
William D. Stanley, Walter D. Mooney, Gary S. Fuis
What do we mean by accuracy in geomagnetic measurements? What do we mean by accuracy in geomagnetic measurements?
High accuracy is what distinguishes measurements made at the world's magnetic observatories from other types of geomagnetic measurements. High accuracy in determining the absolute values of the components of the Earth's magnetic field is essential to studying geomagnetic secular variation and processes at the core mantle boundary, as well as some magnetospheric processes. In some...
Authors
A.W. Green
Source parameters and effects of bandwidth and local geology on high- frequency ground motions observed for aftershocks of the northeastern Ohio earthquake of 31 January 1986 Source parameters and effects of bandwidth and local geology on high- frequency ground motions observed for aftershocks of the northeastern Ohio earthquake of 31 January 1986
A 10-station array (GEOS) yielded recordings of exceptional bandwidth (400 sps) and resolution (up to 96 dB) for the aftershocks of the moderate (mb ≈ 4.9) earthquake that occurred on 31 January 1986 near Painesville, Ohio. Nine aftershocks were recorded with seismic moments ranging between 9 × 1016 and 3 × 1019 dyne-cm (Mw: 0.6 to 2.3). The two largest aftershocks (depth 5.3, 5.6 km...
Authors
G. Glassmoyer, R. D. Borcherdt
Groundwater flow-field in infinite slopes Groundwater flow-field in infinite slopes
No abstract available.
Authors
R.M. Iverson
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: December 1990 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: December 1990
No abstract available.
Authors
John B. Townshend, Richard V. O’Connell, Carol Ann Varner
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: November 1990 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: November 1990
No abstract available.
Authors
John B. Townshend, Richard V. O’Connell, Carol Ann Varner
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: June 1990 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: June 1990
No abstract available.
Authors
John B. Townshend, Richard V. O’Connell, Carol Ann Varner
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: May 1990 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: May 1990
No abstract available.
Authors
John B. Townshend, Richard V. O’Connell, Carol Ann Varner
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: January 1990 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: January 1990
No abstract available.
Authors
John B. Townshend, Richard V. O’Connell, Carol Ann Varner
IGRFGRID : a program for creation of a total magnetic field (International Geomagnetic Reference Field) grid representing the earth's main magnetic field, Part B - Source code IGRFGRID : a program for creation of a total magnetic field (International Geomagnetic Reference Field) grid representing the earth's main magnetic field, Part B - Source code
No abstract available.
Authors
Ronald E. Sweeney
Preliminary map showing locations of landslides in El Yunque quadrangle, Puerto Rico Preliminary map showing locations of landslides in El Yunque quadrangle, Puerto Rico
No abstract available.
Authors
Manuel R. Guariguata, Matthew C. Larsen