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
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
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: October 1990 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: October 1990
No abstract available.
Authors
John B. Townshend, Richard V. O’Connell, Carol Ann Varner
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: July 1990 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: July 1990
No abstract available.
Authors
John B. Townshend, Richard V. O’Connell, Carol Ann Varner
Impact assessment of exploratory wells offshore South Florida Impact assessment of exploratory wells offshore South Florida
No abstract available
Authors
Eugene A. Shinn, Barbara H. Lidz, Phillip A. Dustan
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: February 1990 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: February 1990
No abstract available.
Authors
John B. Townshend, Richard V. O’Connell, Carol Ann Varner
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: August 1990 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: August 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
Origin of Florida Canyon and the role of spring sapping on the formation of submarine box canyons Origin of Florida Canyon and the role of spring sapping on the formation of submarine box canyons
Florida Canyon, one of a series of major submarine canyons on the southwestern edge of the Florida Platform, was surveyed using GLORIA, SeaBeam, and Deep-Tow technologies, and it was directly observed during three DSRV Alvin dives. Florida Canyon exhibits two distinct morphologies: a broad V-shaped upper canyon and a deeply entrenched, flat-floored, U-shaped lower canyon. The flat-...
Authors
Charles K. Paull, Fred N. Spiess, Joseph R. Curray, David C. Twichell
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: 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