Publications
Filter Total Items: 7496
Earthquakes July-August 1986 Earthquakes July-August 1986
No abstract available.
Authors
Waverly J. Person
Map showing landslide deposits in northwestern New Mexico Map showing landslide deposits in northwestern New Mexico
No abstract available.
Authors
Fausto Guzzetti, Earl E. Brabb
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska, January 1987 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska, January 1987
No abstract available.
Authors
John B. Townshend, R. V. O’Connell, L.Y. Torrence
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska, November 1987 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska, November 1987
No abstract available.
Authors
John B. Townshend, R. V. O’Connell, L.Y. Torrence
Regional unconformities cored on the New Jersey continental slope Regional unconformities cored on the New Jersey continental slope
No abstract available.
Authors
C. Wylie Poag, Doris Low
Current loops fitted to geomagnetic model spherical harmonic coefficients. Current loops fitted to geomagnetic model spherical harmonic coefficients.
One hundred-sixty circular current loops with radial axes were fitted by least squares to the 899 spherical harmonic coefficients of a 29th degree model. In the first case, the parameters that were fitted for each loop were the normalized magnetic moment, the distance from the center of the Earth to the current element, the colatitude and E. longitude of the loop axis, and one-half of...
Authors
L.R. Alldredge
On predicting changes in the geomagnetic field On predicting changes in the geomagnetic field
The present method of using constant secular variation rates to forecast magnetic components at a given site or to forecast spherical harmonic coefficients is known to be inaccurate. A new predictive method using trend and trigonometric functions fitted to known past values is used to extrapolate for a few years into the future. This provides an improvement over the usual linear...
Authors
L.R. Alldredge
On regional geomagnetic charts On regional geomagnetic charts
When regional geomagnetic charts for areas roughly the size of the United States were compiled by hand, some large local anomalies were displayed in the isomagnetic lines. Since the late nineteen sixties, when the compilation of charts using computers and mathematical models was started, most of the details available in the hand drawn regional charts have been lost. One exception to this...
Authors
L.R. Alldredge
Field guide to sedimentary structures in the Navajo and Entrada sandstones in southern Utah and northern Arizona Field guide to sedimentary structures in the Navajo and Entrada sandstones in southern Utah and northern Arizona
This field-trip guide describes the common sedimentary structures that occur in eolian sands. The outcrops that are described occur in the Navajo and Entrada Sandstones between the areas of Page, Arizona and St. George, Utah (figure I), but the sedimentary structures of these two sandstones are typical of most eolian deposits. The main part of the guide discusses the geologic setting and...
Authors
David M. Rubin, Ralph E. Hunter
Bolboforma (Chrysophyta?) from the western North Atlantic Bolboforma (Chrysophyta?) from the western North Atlantic
No abstract available.
Authors
C. Wylie Poag, A. L. Karowe
Effects of disaggregation on a fine-grained marine mud by two ultrasonic devices Effects of disaggregation on a fine-grained marine mud by two ultrasonic devices
No abstract available.
Authors
Richard R. Rendigs, Judith A. Commeau
Gulf trough: The Atlantic connection Gulf trough: The Atlantic connection
Analyses of seismic reflection profiles and stratigraphic data indicate a continuation of the Gulf trough trend across eastern South Carolina and offshore between Cape Fear and Cape Hatteras, North Carolina. Seismic profiles show a linear northeast-trending zone of nondeposition and erosion and areas of chaotic deposition in the Eocene and Oligocene sections. The character of deposition...
Authors
Peter Popenoe, Vernon J. Henry, Faisal M. Idris