Publications
Filter Total Items: 2342
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska
No abstract available.
Authors
John B. Townshend, R. V. O’Connell, Carol Ann Varner
Maps showing landslide features and related ground deformation in the Woodlawn area of the Manoa Valley, City and County of Honolulu, Hawaii Maps showing landslide features and related ground deformation in the Woodlawn area of the Manoa Valley, City and County of Honolulu, Hawaii
No abstract available.
Authors
Rex L. Baum, Robert W. Fleming, Stephen D. Ellen
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska
No abstract available.
Authors
John B. Townshend, R. V. O’Connell, Carol Ann Varner
Statistical analysis of factors affecting landslide distribution in the new Madrid seismic zone, Tennessee and Kentucky Statistical analysis of factors affecting landslide distribution in the new Madrid seismic zone, Tennessee and Kentucky
More than 220 large landslides along the bluffs bordering the Mississippi alluvial plain between Cairo, Ill., and Memphis, Tenn., are analyzed by discriminant analysis and multiple linear regression to determine the relative effects of slope height and steepness, stratigraphic variation, slope aspect, and proximity to the hypocenters of the 1811-12 New Madrid, Mo., earthquakes on the...
Authors
R.W. Jibson, D. K. Keefer
A direct method for calculating instrument noise levels in side-by-side seismometer evaluations A direct method for calculating instrument noise levels in side-by-side seismometer evaluations
The subject of determining the inherent system noise levels present in modem broadband closed loop seismic sensors has been an evolving topic ever since closed loop systems became available. Closed loop systems are unique in that the system noise can not be determined via a blocked mass test as in older conventional open loop seismic sensors. Instead, most investigators have resorted to...
Authors
L. Gary Holcomb
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska
No abstract available.
Authors
John B. Townshend, R. V. O’Connell, Carol Ann Varner
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska
No abstract available.
Authors
John B. Townshend, R. V. O’Connell, Carol Ann Varner
Landslide deposits in the Duchesne 30' x 60' Quadrangle, Utah Landslide deposits in the Duchesne 30' x 60' Quadrangle, Utah
No abstract available.
Authors
R. B. Colton, Bruce Bryant
Preliminary geomagnetic data, College Observatory, Fairbanks, August 1989 Preliminary geomagnetic data, College Observatory, Fairbanks, August 1989
No abstract available.
Authors
J.B. Townshend, R. V. O’Connell, C.A. Varner
Landslides and debris flows in Ephraim Canyon, central Utah Landslides and debris flows in Ephraim Canyon, central Utah
No abstract available.
Authors
Rex L. Baum, Robert W. Fleming
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska
No abstract available.
Authors
John B. Townshend, R. V. O’Connell, Carol Ann Varner
An introduction to quiet daily geomagnetic fields An introduction to quiet daily geomagnetic fields
On days that are quiet with respect to solar-terrestrial activity phenomena, the geomagnetic field has variations, tens of gamma in size, with major spectral components at about 24, 12, 8, and 6 hr in period. These quiet daily field variations are primarily due to the dynamo currents flowing in the E region of the earth's ionosphere, are driven by the global thermotidal wind systems, and...
Authors
W.H. Campbell